Want to learn by Video Lectures? CLICK HERE to watch them
Improvement in Food Resources
Food is one of the basic needs for all living organisms. Food provides nutrients like carbohydrates, fats, protein, vitamins and minerals.
Sources of food: Agriculture & animal husbandry (livestock). Problem: India is an agriculture oriented country but still lack of food due to growing population.
Solution:
Increase efficiency of production.
Access of food to people who live in food deserts (urban neighborhoods and rural towns).
People should have enough money to buy food.
Green Revolution
Green Revolution is a programme introduced in many poor countries to increase food production by use of modern technology, proper irrigation, improved seeds, etc.
White Revolution
White Revolution is a programme introduced in India to increase production of milk in India. This programme made India self – sufficient m production of milk.
Similarly Blue Revolution was introduced to enhance fish production and Yellow Revolution was introduced to increase oil production.
Types of Crops
Cereals (wheat, Rice, Maize, Millet, Sorghum) provide us carbohydrates. Pulse (gram, pea, black gram, green gram, pigeon pea, lentil) provide us proteins. Oil Seeds (soya bean, ground nut sesame, castor, mustard, linseed, sunflower) provide us fats. Vegetables, spices, fruits provide us vitamins & minerals. Fodder crop (berseem, oats, sudan grass are raised as food for the livestock are called as fodder crops.
Crop Season
Different crops require different conditions (temp, moisture, etc.), different Photo - periods (duration of sunlight) for their growth and completing life cycle.
There are following two distinct season crops: Kharif Season:
June to October (Rainy season).
Monsoon requires more water.
Paddy, soyabean, pigeon pea, maize, black gram, green gram and rice are kharif season crops.
Rabi Season:
Nov. to April.
Requires less water.
Wheat, gram, peas, mustard and linseed are rabi season crops.
Improvement in Crop Yield
Yield increases when production increases from same amount of land in same period of time.
Approaches which enhance the crop yield are as following:
Crop Variety Improvement
Crop Production Improvement
Crop Protection Improvement
Crop Variety Improvement
Some of the factors by which variety improvement can be done, are:
Good & Healthy Seeds.
Hybridization technology: It is the process of cross - breeding two different varieties of crops to produce a new variety with good properties of both the crops.
Genetic Improvement: In genetic improvement, genes of a crop are modified so that desired properties are retained and undesired properties are suppressed.
Want to learn by Video Lectures? CLICK HERE to watch them
Properties to be possessed by improved seeds:
Should give high yield.
Improved Quality: Should give more nutrients like carbohydrates, proteins etc.
Biotic Resistance: Resistance to diseases due to living micro – organisms, insects .
Abiotic Resistance: Resistance to problems due to non – living things
like drought, heat, heat, cold, frost, water logging, salinity (excess salt).
Less Maturity Duration: Short duration crops require less costing and more rounds of crop.
Wider Adaptability: Crops which can grow in different conditions, will help in setting high production.
Desired Agronomic Traits: Crops which contain desired agronomic traits (height, branching, leafs), sets high production.
Crop Production Improvement
It involves different practices carried out by farmer to achieve higher standards of crop production.
1. Nutrient Management
2. Irrigation
3. Cropping Patterns
Nutrient Management
Like other organisms, plants also require some elements for their growth. These elements are called Nutrients.
Macronutrients: Macronutrients are the nutrients required by plants in large amount. Micronutrients are the nutrients required by small plants in small amount.
Harmful effects of lack of nutrients:
No proper growth.
Low resistance to diseases.
No proper fruits and flowers.
Manure & Fertilizer
Plant nutrients and organic matter in the soil can be increased by adding manures and fertilizers to the soil.
Manure
It is defined as the decomposition of animal excreta and plant waste. Manure mainly contains organic matter and also some nutrients in small amount. Based on the biological material used, manures are of three types.
Compost: Animal excreta (like cow dung etc.), kitchen waste, plant remains, waste wood, etc are left in pit for long time. They decompose slowly to form compost. This compost is used as manure. This process is called composting.
Vermi Compost: To make the decomposition process fast, earthworms are left in the pit. Earthworms eat up the waste and excrete organic matter as there excreta. The compost thus formed is called vermi – compost. This process is vermin – compositing
.Green Manure:
Fast growing plants like sun hemp, guar are grown. They are then mulched into the soil by ploughing. They decay to form organic matter. After sometime, the main plants are grown. Remains of the old plant enrich the soil with nitrogen and phosphorus.
How manure helps?
It provides lots of organic matter which makes soil porous.
It increases soil fertility in general.
It provides some nutrients in small amounts.
As it is made from waste products, so environment is cleaned.
Want to learn by Video Lectures? CLICK HERE to watch them
Fertilizers
Fertilizers are chemicals manufactured in factories. They are chemicals highly rich in nutrients like nitrogen, phosphorus and potassium.
They provide large amount of nutrients and thus ensure better growth of plants.
Disadvantages of fertilizers:
1. Fertilizers beings chemicals can harm the micro – organism and insects in soil.
2. Fertilizers do not provide much organic matter.
3. Excessive use of fertilizers for a long period of time can damage soil fertility.
4. If excessive irrigation is done, some fertilizers can flow with excess water to water bodies. As fertilizers are chemicals, they will cause water pollution.
Manure
Fertilizers
Easily made using animal & plant waste
Made in factories in well defined way
No harmful effect as fully natural.
Side effects as it is a chemical.
Provides mainly organic matter.
Provides mainly nutrients.
Good for long term soil fertility
Not good for long term soil fertility if used in excessive amount.
Not as effective as fertilizers.
Very effective in obtaining fast result
Cheap
Costly
Irrigation
We cannot depend on rain for water as it is not fully reliable. A proper irrigation system will ensure timely and adequate water to crops. This will lead to more yield.
Some most commonly used irrigation systems:
Wells: These are constructed in the region where enough ground water in available. They are of two types:
Dug Well: In the dug wells, water is collected by bullock-operated devices or by pumps. This method is cheap. Tube Well: It makes very deep underground water available for irrigation. Motor pump is used to lift water. This method is required high cost.
Canals
Man- made water channels originating from rivers or water – reservoirs. They are specifically made to take water to various agricultural plots.
River Lift System
In this system water is directly taken from rivers through pumps. This system is useful for irrigation in areas close to river.
Tanks
Tanks are small storage reservoirs which is used to store the rain water.
Rain Water Harvesting Rain water harvesting is accumulation of rain water in tanks for later use. This also prevents soil erosion. Soil erosion is unwanted How of top layer of soil with flowing water. This method is required high cost.
Crop patterns
Different patterns are used to maximize the production from crop field.
1. Mixed Cropping 2. Inter Cropping 3. Crop Rotation
Mixed Cropping: In this pattern, seeds of two or more crops are mixed and spread in fields. Both the crops grow together.
Examples: wheat and gram, wheat and mustard, groundnut and sunflower.
How crops are chosen?
Should require similar environmental conditions like rain, temperature for growth.
Should require different nutrients so that all nutrients of soil are used.
Want to learn by Video Lectures? CLICK HERE to watch them
Advantage: Low risk. If one crop fails, others may still survive.
Inter Cropping: It is the advanced form of mixed cropping. Two or more crops are grown on the same field in a definite pattern. Few rows of one followed by few rows of other.
Examples: soybean + maize, finger millet (bajra) +cowpea (lobia)
How crops are chosen?
Should require similar environmental conditions like rain, temp. for growth.
Should require different nutrients so that all nutients of soil are used.
Advantages:
Low risk. If one crop fails, others may still survive.
Disease cannot spread from one row to other.
Crop Rotation: Crop rotation is policy of growing different crops one after another on the same filed.
If same crop is grown again and again on the same field, same nutrients are extracted from soil again and again. So we should choose different crops so that all nutrients of soil are used.
How crops are chosen?
Environmental conditions
Nutrients required by crops.
Advantages:
Soil fertility is maintained.
Less use of fertilizers.
High yield.
Crop Protection Improvement When the crop is in the field, it needs protection against weeds, insect pests and other diseases. Following methods are used to control these problems.
Pest Control during Growth 2. Storage of Grains
Pest Control during Growth
Pest is any destructive organism which can destroy or harm crops or products obtained from them.
Pests are of many types:
Weeds: Weeds are unwanted plants in the cultivated field like xanthium, parthenium, cyperinus rotundus.
They compete with desired crops for food, space and light. Therefore desired crops get less nutrients and are adversely affected.
Insects: Insects can harm plants in following ways :
They can cut roots, stems and leaves of plants.
They can get into fruits, flowers and steam of plants destroying them.
They can suck food and water from plant bodies.
Pathogens: Any organism that can produce disease is called pathogens. Example; bacteria, virus, fungi.
Plants can get these organisms from soil, air or water. Diseases caused by these can spread in all crops on the field and destroy the entire cultivation.
Various methods are used to control weeds, insect etc.
Killing Pests
Various types of pesticides are spread on plants to kill different pests. These are toxic chemicals. Herbicides kill weeds. Insecticides kill insects. Fungicides kill fungi.
Disadvantages of using pesticides:
Pollution
Toxic to many useful plants and animals.
Weed Control
Weed Control involves precautionary measures to avoid weed growth.
Manual removal of weeds.
Seed bed preparation: Fields are ploughed deep. Thus weed seeds come on top and germinate in few days. Then they can be removed before planting actual crops.
Crop Rotation: Some crops destroy weeds in fields. Such crops included in crop rotation.
Proper Sowing Time: Warm and humid climate not favourable.
Inter Cropping: Due to presence of multiple crops, environmental resources are used more efficiently. Thus very little resources are left for growth of weeds.
Storage of Grains For getting seasonal foods throughout of the year, they are stored in safe storage. But during storage of grains, they can destroy and waste by various means.
Biotic problems: Due to living organisms like insects, birds, mites, bacteria, fungi.
Abiotic problems: Due to non - living factors moisture, inappropriate temperature etc.
These factors affect quality degradation, loss in weight, change in colour, loss of germinability.
Solution:
Proper cleaning of product and warehouse.
Proper drying of products before storing.
Fumigation (drugs which form toxic fumes which can kill pests) to kill pests and insects.
Organic Farming
Use of fertilizers and pesticides has their own disadvantages. They cause pollution, damage soil fertility in long run. Grains, fruits, vegetables obtained may contain harmful chemical in small amount.
Organic farming is farming system with no or very little use of chemicals like fertilizers and pesticides.
Want to learn by Video Lectures? CLICK HERE to watch them
Process of Organic Farming
Use of manure.
Use of bio fertilizers: blue – green algae (organism). They fix nitrogen from atmosphere to soil. Some micro – organism can also kill pests. They are intentionally put in soil to kill pests. They act as bio fertilizers.
Use of bio pesticides: Neem and turmeric can kill some pests.
Weed & Pest control systems are used. So that use of pesticides is not required.
Use different cropping pattern like mixed Cropping, intercropping and crop Rotation.
Animal Husbandry
Animal husbandry is the scientific management of domestic animals in an efficient manner to obtain food and other useful products from them.
Cattle Farming
Purpose of Cattle Farming:
For getting milk.
Ploughing fields.
Bull Cart for transportation.
Types of Cattle:
Cow (Bos indicus).
Buffalo (Bos bubalis).
Milch Animals: These includes milk producing animals(female cattle). Draught Animals: Those animals which do not produce milk and used for agricultural work.
Lactation Period:
Female cattle give milk after birth of calf (baby). The time duration for which she gives milk is called lactation period. Typical under a year.
How to increase lactation period?
Cross breeding: Cross breeds are obtained by hybridization or by crossing animals of different species. The offsprings produced are called “Hybrids”. Hybrids show good characters of both the parents like high lactation period, high resistance to diseases.
Proper diet.
Care of Cattle
Cleanliness
- Roofed shelter with good ventilation for protection from rain, heat and cold.
- Regular brushing of skin of cattle.
- Sloping floor of shelter for avoiding water – logging.
Proper food is required for good health and special diet should be given during lactation period.
Diseases
Disease can cause death and reduce milk, production.
Parasites are small organisms living inside or outside the body of another organism (host). They derive food from body of host.
External parasites on skin of cattle cause skin diseases
Internal parasites like worms cause stomach and intestine problems and flukes cause liver problems.
Bacteria, virus cause infectious diseases (diseases that can be easily transmitted from one to another).
Vaccination is given against major diseases.
Poultry Farming
Poultry Farming is done for eggs and meat. Both provide protein to our diet.
Broilers: Birds grown for obtaining meat are called broilers. They can be used after 6-8 weeks from their birth. Layers: Birds grown for obtaining egg are called layers. They can be used after 20 weeks when sexual maturity has been attempt to lay eggs.
Most of the broilers & layers are cross – breed.
Breeding is done to enhance following properties in hens :
More and better quality chicks.
Low maintenance.
Breeding is done to produce dwarf broilers (meat – giving birds). Feeding cost is the biggest expense in poultry farms. Dwarf broilers need less food and can reduce cost by 30 %. Also they can tolerate more heat.
Management Practices in Poultry farms:
Proper diet: Layers eat mostly fibre diet. Broilers need diet rich in protein, fat and vitamin A and K.
Maintenance of proper temperature.
Hygienic environment and proper sanitation.
Regular spraying of disinfectants to kill bacteria, virus, fungi and parasites which can otherwise cause diseases.
Controlling canvass quality. Canvass quality refers to ratio of bone to flesh in chicken.
Avoid mortality.
Providing adequate space to birds. This is important for their proper growth.
Fish Production Fish production is a great source of protein to our diet.
Fish production is of two types:
Finned Fish Production / True Fish Production: Production and management of cartilaginous and bony fishes such as pomphret, tuna ,cod, catla, prawns, rohu, mrigal, etc.
Unfinned Fish Production : Production of shellfish such as prawns, mollusks.
Depending on the mode of obtaining fishes, fishing are of two types:
Capture Fishing: Naturally living fishes in various water bodies are captured.
Culture Fishing: Fishes of desired variety are cultivated in confined areas with utmost care to get maximum yield. This is also called aquaculture. Aquaculture can be done in oceans, rivers, lakes, ponds, etc. When it is done is oceans, it is called mariculture.
Marine Fishing
Marine fishing includes fish production in ponds, rivers, lakes, reservoirs.
India has huge coastline of 7500 km. So it is natural for India to have a large marine fishing industry.
Popular marine fishes include pomphret, mackerel, tuna, sardines, Bombay duck. Some costly fishes found in sea like mullets, prawns, mussels, seaweed, oysters.
Using satellites, regions of high fish population in sea can be found. Echo – sounders are also used.
Inland Fishing
It includes fish production in fresh water (for ex. ponds, rivers, lakes, reservoirs) and brackish water (for ex. Estuaries, lagoons).
This type of fishing gives lower yield compared to marine fishing. Capture & culture fish farming, both are done in such water bodies.
Composite Fish Culture
- 5 to 6 varieties in a single fishpond.
- They are selected so that they do not compete for food. They should have different food requirements.
Examples: Catla: feeds in the upper part water Rohu: feeds in middle part of water Mrigals, Common Carps: feeds at bottom
Advantage: More yield.
Problems: Many fishes lay eggs during monsoons only, due to which number of fishes will not grow fast. So hormonal stimulation is used, using this fishes can be made to reproduce anytime.
Bee – Keeping
It is the practice of keeping, caring & management of honeybees on a large scale for obtaining honey & wax.
Many farmers use bee – keeping for additional small income. Also there are big farms called apiaries/ bee farms.
Some common Indian varieties of bees include apis carana indica (Indian bee), dorsata (rock bee), florae(little bee).
One Italian variety mellifera is also used in India for commercial large scale production because of its following advantage:
1. High honey collection capacity.
2. They reproduce fast.
3. They sting less.
4. They stay in a beehive for long.
Want to learn by Video Lectures? CLICK HERE to watch them
Hello,, it is really helpful
for me and my classmates thanks for this site and it is really help full for the students of 9th class and who will study it. Very much well and your notes are very easy to find out and learn it very very big thanks to you and thanks for this site....
This site is awesome!!
I really liked it and each and every point what you need is clearly written and it really helped me .
It is the one of the best site for me.
This site is amazing...we normally..have to prepare notes by ourself...and i use this site for it ..in all subjects of science..let it be physics..chemistry..or biology..and always..i use to get excellent replays on my notes by teachers....thank you..
Lots of thanks to its developer....this site is too much helpful for me....and it is hoped by me that,every man will like to travel through this site....as it is too much helpful....
This site is really amazing ......all the thing which we need I can say notes before giving any type of exams just reading this information we can score 90%or more then this also...
amazing site i swear!!
IT IS SOO DAMN HELPFUL AND PROVIDES BEST QUALITY NOTES ....
BUT WE CANNOT COPY PASTE THE NOTES #SAD
WHAT SO EVER THIS IS REALLY HELPFUL AND USEFUL
wonderful site .helped a lot in my studies.points arranged effectively.everyone should take benifit frm it.thankkkkkkkkkkkk uuuuuuuuuuuuuu.................
omg I love this site one of the site iIlove to visit when I am browsing I think this can be really helpful to students of my age and, in fact, all the ages so basically I love u guys and keep up the hard work all the best and thannnnnnnxxxxx a lot
this is really very helpful
just before the exam i referred this as i did not understand the lesson and it helped me a lot
i just love this site
thank you so much
THIS SITE IS AMAZING!!!!!!!!!!THIS SITE IS A KIND OF WE NEED EVERY HELP OR ANY HELP TO TAKE THIS SITE...
I SAY THIS SITE IS DEFINATILY HELP TO THE PEOPLE OR STUDENTS WHOLE STUDENTS LIKE THIS SITE THEY HELP GROWTH TO OUR KNOWLEGE ..................THANKS A LOT..............
if u feel so pls stop using this site this site has helped me study 9 chapters of scince just one day before exam and i go0t 98 out of hundred for scince
ITS AMAZING!!!!!!!
Easy to understant
The site is amazing!!!!! It helped me alot in my exams.....tysm
This is definitely an golden website for scoring better marks in any subject. I thank the creater of this site
It's really osum .I had got my answer thank u
It's really osum .I had got my answer thank u
Greattt!! It covers the entire chapter
Excellent
Thanks
thank you and its really very helpful for me
IT WAS VERY USEFUL AND IT HELPED ME A LOT.
AMAZING NOTES!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
it helps☺
Very amazing site... My improvement is shown
OSM
GJB
very good notes by this notes you dont need to read textbook
Fantastic app thanks alot
Fantastic app thanks alot
Hello,, it is really helpful
for me and my classmates thanks for this site and it is really help full for the students of 9th class and who will study it. Very much well and your notes are very easy to find out and learn it very very big thanks to you and thanks for this site....
Its very useful.it helped very much.
Thanks
Very helpful.
Nice.....
Nice notes
Nccc
Nice but nds advance
Wow It really helped. BUT NDDD SOME ADVANCEMENTS. .
Msttttttfrrttttt
Awsum
Really helpful for students. It makes it more easier to learn.
Really helpful. Such websites really help students learn in a more easier way.
Very good.... this site is helping me too much I m studying from this site....not from ma book...book topics are very lendy....This is very useful
I am Grateful to dronstudy .my request to do for lesson 14thwhy do we fall ill. Plzzzz
This site is awesome!!
I really liked it and each and every point what you need is clearly written and it really helped me .
It is the one of the best site for me.
Nice but read carefully
Thanks for showing this notes.. tomorrow is my science final exam.this notes help me..
good nice .... interesting ..... thanks
nice notes
this is very useful site for student just like me
very good material great site
It is very helpful to me
It's really help ful
It helped a lot
super site
Really very helpful
Love it!! This site is amazing
Awsome Guys!
Keep up the good work
Seriously ch taking 3 hrs for me to learn i came up with learning it in 1hrs
Isn't it Interesting? 😉
Wowwwww
Thanks dron
Wow nice
Please tell me option for download this lesson
If it is downloadable i will be grtful
Nice
Thanks it help me a lot for my exam thank u
It is really very very very..... Help fulll
It is a very good site and students can study these as notes. I like it very well. It is very helpful. Students must use this site to study it
Awesome website for notes.
Gelped me a lot .but too short topic wise notes
Fabulous notes
thank u very much...! keep it up...!:) i solely appreciate the efforts put in by the team...! thank u :):):):)
Its wonderful .they are very useful . Keep it up
Treuly
This is the best site ever. Can't express my expression over this typing but buddies you gotta use this site. This is a complete guide for me.
Nice notes
good job...................
U should give notes of social Science bcoz u make very nice and useful notes................
nice solution
really amazing loveeeed it
2 good and it's amazing site ,verygood,andnice thanx alot
Very nice
It is so useful.
awsm notes it fetch my 50 out of 50 in my sscience revision test
nice notes very helpful for my revision test and term 2 exam
Thank you so much for giving awesome notes. Its really very helpful for my project.
very helpful
Awesome!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Awesome!!!!!!!!!!!!!!!!!!!!!!!!!!!!! thank you for making such a website
best notes of the chapter seen till date
thanks so much
thnks fr giving us short nd sweet notes......
it is in simple english and vry easy to understand...thnk u vry much...............
It was really nice one it helped me a lot in my studies
Really nice one it helped me a lot in my exsms
This site is very useful
the notes are exceptional but it would be better if a PDF form is available on the site itself
I like it so much
This site was amazing
Liked this
Amazing....
Very very helpful
Awesome....
Very very very nice
Very very very helpful
It's really vRy useful......thnxxx a lot
Good
This is very useful nd helpful......thanxxx a lot
This is very useful.......thnxxx a lot
Very useful
Thanx
Very usefull and important notes
Very NYC Notes for quick learning!!
This site is amazing. It is very nice. It is very helpful for me.
Nice information and notes
Thank you
Very good and so helpful
Good☺☺☺☺☺☺☺☺☺
Very helpful I gave to lot of thanks dronstudy
Very helpful
I am so thankful to dronstudy ... Gives such a helpful notes
This site is very helpful .
Maza A gaya!
nice dron
Very much helpful site for class 9 students I have ever seen in my life
Very easy
Nice language
very good
Really nice
Good notes
contents are fabulous
contents are fabulous
contents are awesome
thanks it really help me
This site is amazing I understand one chapter in three hour because,I was lasy in study and this site help to understand. Tomorrow is my science exam.
Reallyy reallyy very helpful site for atudents and teachers!!!
May this site live for 1000 years :);)
Reallyy reallyy very helpful site for atudents and teachers!!! :);)
this very helpfull
This material to good
Nice
It is a nice website..I helps me in exams...I thanks this app ...
good
Please learn these notes it give 100% result
It's a nice app
Damn Amazing site Mann.
Very nice loved it
Very useful
good
awesome
very helpful for students
Very very niceeeeeeeeeeeeeeeeeeeeeee thanks for information very much very excellent app
Thank you all of your team to doing great job
thanks sir wonderful
Helped me a lot
Mind blowing ...... Amazing ....... Faabolous....... Fantastic ...........
Really helpful
V. Helpful for all students.
Wish u good luck.
Go on
V. Helpful for students of any class rather 8, 9, 10, 11, 12.
Go on
Good Luck .
Thanks a lot my dear site
amazing notes
It is very very helpful for me
Thanks for giving notes it is very helpful for me I can't understand the book language but reading this I have understand in chapter what is given
very useful
Amazing notes
I like it
Good l really appreciate you ........
You are really helping our child
Thanx
Would you please provide me pdf of this file.
good
best website i have ever seen!!!!!
It's very very helpful...i liked this site......thanks
Use full help to study
It's too gud guyes it helped me a lot in making notes it's an amazing site
Superbb notes
Nice app very helpful
Nice
Very big notes
very nice
This site isssssss 2222 muchh ... Helpful
This site is amazing...we normally..have to prepare notes by ourself...and i use this site for it ..in all subjects of science..let it be physics..chemistry..or biology..and always..i use to get excellent replays on my notes by teachers....thank you..
This study material is amazing........!!!!!!!!!!
This app s quiet amazing..........!!!!!!
Fantastic
these notes are really nice . it helped me a lot . thank u . good job
thanks for these notes they r helpful
Its nice very helpful
Thanks a lotzzzzz
it is very useful website for us
This is very helpful for me... Thank you so much,.....
This is really very helpful for us youth generation ....I like this site
like this site
It is very helpful for me my name is cristiano
for 9th class sample paper
Hello Anushka this is our sample video for full video Please call on 9026272829
VERY NICE
Very helpful
this site is very helpful
it is very helpful site for students
It really helped mee a lot..
m a biology hater but it made mee luvv a lil bit of ut
Itzz just fantastic ..
Destroyed my confusions, although i hate Bio-sci but it made mee luv a lil bit of it
Loved it thanks
Loved it thanks a lot
very good and informative. thank u!
Lots of thanks to its developer....this site is too much helpful for me....and it is hoped by me that,every man will like to travel through this site....as it is too much helpful....
Very helpful in studies
it help in my study
Yes! Really it is good site
V.good
awsm website ...... helped me a lot ......... thanq very much.......
The notes are very important
i love this site !!!!!!!!!!!!!!!!!!
very very helpful....thankyou
This site is really amazing ......all the thing which we need I can say notes before giving any type of exams just reading this information we can score 90%or more then this also...
Superb. This is very useful for me and for all students of class 9th.
Amazing..... notes it helpful for my exams...
it was soo bad
good
hello i am mahima
Thanks
It is so nice .
My urgent help
Very good notes and helpful
V.good
Awesome
nice
It is very nice to study science which is difficult
Easy to express their
it is really worked for my project
Very detailed notes no need of reading text books or any other preference books reduces time that you so much
I request them to go to some rural areas and teach them
it helps me a lot
Wow, this is really good. Not only for revision, but it can be used to study the whole chapter without the help of the NCERT textbook. Great work!
GOOD 1 AND
VVVVV HELPFUL
V.V.V.V HELPFUL
Very good
Site
nice because I like point wise writing
good one
very good and very nice site by dron study .com
Helpful
Amazing
It is really a good site it helped a lot I was not able to understand the chapter but now I have cleared all my doubts
very much helpful
this site is amazing
thanks for this chapter summary
Helped a lot just I referred this before exam and I performed my exam well
IT is an Awesome website!!!!!!!!!!!!!!!!!???????????????????????????
it is a very wonderful site
Thnx for your succourance
thank you for arranging notes for us.
it is a very very very nice site especially for students as they can get notes from here
this site is very useful .thanks a lot
very useful !!!
Very helpness
It is just adorable.Very useful........
Thanks a lot for these notes..
This is so much helpful
It's useful and understandable
I like it
best....
good
U helped me lot in my exam.. excellent explanation..?
This is very long but nice?
u r the best
its good helpful for me for my exams
Very nice site
good notes it is informative
Excellent Notes!!
Nice
Thanks very nice.
it helps a lot to done my homework
why we cant copy it
Good
good!it was helpful
very nice but too long to study
it is very helpful
it really helped me!
thnx for sharing
Amazing! - helped me in exams.
its really helpful
very good
It cleared all my basic doubts .. Than You to the owner of this site ...:"D
it helped me a lot in completing notes and during exam
i am really happy with this site and i wish it a healthy life
really very nice
Very nice note it will help for exams alot..............
it was awesome!!!!!
more helpful to students during exam preparation
really helpful
very informative
Very good this site is amazing
Helped me
i love this website it is awsome
i like this website ... indeed of great help ...in understanding lessons..
Easy to understand.simple and well explained helps in self study
quite helpful n easy 2 understand
it's very nice
helpful too
ITS AWESOME
This was something I needed thank you so much to an individual who took an effort to upload the notes of this chapter really thankfull.
All the love- Pearl
very detailed notes thanks,dronstudy
It was very useful it helped me a lot
Goooooooooooood notes
awesome....it helped me a lot....
It is very nice
very helpful for homework
the notes were very helpful
wow yar wow kya text hai very good
nice
this is very useful thankssssssss
It's awesome.It help me a lot.
Helpful!v.v.v.v.v.v.v.vvvvvvvvvvvvvvvvvvvvgood !mind blowing
awesome
So helpful
superb!!!!
the content has only the extract which was really helpful thankx
the content has only the extract which was really helpful thankx
awesome site...very useful...especially for children who start studying 2 days before exam...
it's really helpful
Nice information
AMAZING
Pls do the facilities of printing
its very helpful for us and reading for examination
It's helpful
it is so awsome the whole topic is covered and i will score 100 on 100 this time dude
its nice ................... thaxx
its ossum
nice.. very helpful
Wow.......
Nice
it is very nice
Thi site is amazing!!!!!
amazing site i swear!!
IT IS SOO DAMN HELPFUL AND PROVIDES BEST QUALITY NOTES ....
BUT WE CANNOT COPY PASTE THE NOTES #SAD
WHAT SO EVER THIS IS REALLY HELPFUL AND USEFUL
Very nice
THIS SITE IS VERY USEFUL TO ME AND INFORMATION ON THIS SITE IS AWESOME. I REALLY THANKFUL TO THIS SITE . THANKS THANKS A LT........
It really help us to know more detail and the words are to simple so that we can easily understand it .thank you .
It's really working!!!
This website roxxxx;)
Thanks a lot to this site it helps me a lot . i am very much hpy after knowing this site.once again thanks.
it help me a lot for my test, thanks a lot for this article on improvement in food resources
thanku for this notes
i like this site its very usefull
So good
awesome website
Very good.
Thanks
Too...good
VERYHelpful
Very nice presentation
Toooooo..... Good
nice
Awesome??
Very helpful
One should definitely read it
v.good
Thankyou
Wow what a site.all details ,the weirdest part of studies dronstudy
easy to learn
VERY VERY INTRESTING
superb....
Nice
???
its helpfull for reading the exam so, its really good
very good.
good.............
its very vgood and it was very heap full
it helped me a lot
helped a lot
Amir very much
It helped me a lot
It helped me a lot THANK YOU
thanxx very helpfull
It's very helpfull for everyone n thanks a lot
wonderful site .helped a lot in my studies.points arranged effectively.everyone should take benifit frm it.thankkkkkkkkkkkk uuuuuuuuuuuuuu.................
Thank u for th
Thank u for helping me study such good notes for my ut
Helpful for my exams
helpfull
Was quite helpful
please tell more about compost fish cultue
Aesome man
Thx for your notes
Awesome Yeah Thx Yeah
Nice
It helped me in my hw
Helpful
Nice notes
so goooooood very helpful
so goooooooood nice help
very good lines are written
Thanks
Good
this site is so helpful guysssss.....thanxx..
It is best one i love it
very helpful notes...
very helpful notes 🙂
I like it
Keep up the good work! It helped me a lot
It is very nice and helpful
It's very helpful........ Thanks
Very helpful
Ohso nice it helped me a lot
it was very useful
very good thanks for the information
very good lots of thanxxx
Its really hepful to us.
Good content
REALLY HELPFUL
THANXXXXXXXXXXXXXX...................
REALLY HELPFUL
THANXXXXXXXX.............
this definitely kindles the light of the student
Its good
Awesome work!!!!!
Helped me a lot
I just love the guy who made it !!!!???????
it's nice . This made me rock in coaching paper !!!!!
this is really helpful. This site is amazing!!!!!
very useful notes thanks
Ya like all says ,."it helped me lot.................."
Good
it is really helpful...my book was soooo dry that it made me so bored, but this app was damm helpful 🙂
Very helpful
simply..wow
It useful
It help full it help me to complete my holiday homework
Awesome it helps soooooooo much
nice............its very helpful 😛
nice............its very helpful 😛
nice............. its very helpful 😛 😛 😛
It is very nice.....Thanks a lot
It good but heard to understand
very helpfull
mast ha
Great help
Its superb...
Its..$uperb..!!!
Thxx it helped a lot
good work
fabulous! very helpful for ppt
good one...thanx lronstudy
good one...thanxxx dronstudy
Absolutely excellent notes
its nice and very hepfull
it helped me solving my queries
its nice it helped me solving my queries
good
toooo awesome its toooooo gudddd
It is very helpful for students
thanks
Ptwmtpmdg
It has no clearity we can't able to understand the typical word. ..but it is fantastic. .
wonderfull notes i like it and i got full marks in exam
Ooo amazing site. It really helped me ,thank you
very nice!! awesome!!
very nice
wow, very nyc..
so much goooood......!
very helpful but here is only for crop....
Good!
Thank u
its really too good. AWESOME.........
Superb
Nice very nice
it is very useful. but how to copy it at one time. but overall it is fantastico.
very good notes
helped me a lot tnx soooooooooooooooo much
omg I love this site one of the site iIlove to visit when I am browsing I think this can be really helpful to students of my age and, in fact, all the ages so basically I love u guys and keep up the hard work all the best and thannnnnnnxxxxx a lot
This site is very helpfull for students they can take Any type of information through this site
..... Outstanding
WOW IT IS TOOOOOO.... GOOD
u r right
REALLY HELP FULLLLLL.....
So nice... It is very helpful .thanks
good
NICE
Very nice
THANKS IT A LOT
DECEMBER 25, 2015 AT 2 PM
Thanks a lot
This. Website. Give. Us. Inspiration to. Studys and. I salute. The person. Who is the. Ceo of this. Inspirational. Website
Fabulous
Nice
thnx alot
Its too good and helped me a lot
this website helps for writing tommorows exam exellently because i lost my notes
very nice
nice i used it for my studies
it help me a lot
awesome
Thanks It helped me alot..
Thank you soooooooo much XD
thank you sooooooooo much XD
I HAVE DONE MY PREPRATION FROM HERE ONLY
I HAVE LEARN MY BIOLOGY FROM HERE ONLY THANKYOU
it is very much helpful for E.N.A. and biology students
it is very helpful for E.N.A. and biology students
Nice....very helpful! !!!!!!!!!!
this is really very helpful
just before the exam i referred this as i did not understand the lesson and it helped me a lot
i just love this site
thank you so much
tis is outstanding,tremendous ad helped me a lot during my exams !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Very good
Thanks a lot
Really interesting .... And easy notes.....
And I appreciate
Really interesting .......... And nice notes .......
Appreciated by me......!!!!
Amazing...... Site
loved it !!!!!
my exams are going on and it is really helpful at the time of revision!!!!
BEST OF LUCK FOR YOUR JOURNEY
ur notes is more important than a teacher............thank u
very...... helpful for meeeeeeeeee..
Easy syllabus I like only science
Very very helpful for exams !
Really helped me
I LIKE IT.... VERY HELPFUL
awesome
good
its awesome........................................
very easy to understand
Thanks a lot for these precious notes.................
It was very helpful for our exams.
Thank u so much.......
Vvifu very very important for us wow!!!!!!
its really helpful . thanksssssssssssss....................
Really it's too good website
According to my experience instead of studying other books reading the notes of that site only is really very helpfull
thank u for these helpful notes
thank u for notes!!!!!! helped me a lot
oohh mama awesome sight bebe
this site is AMAZING....Thanks a lot it really helped
epic
you guys rock
Awesome....loved it alot
this dron dot com is very useful...
my sincere thanks
to dron.com...
I like this. because it is very useful ,and it is very easy to read.
use this dot com...
I like this. because it is very useful ,and it is very easy to read.
thank u....bye..
WOW!!!!! LOTS OF INFO...took me 5-6 hours to copy
thanxxxxxxx dron study
i like dron.com.....here after i will succeed in my studies...
amazing notes ................that's what i really needed..best site for short revision.thanks.
amazing site................complete revision ................all points covered....................in short...........thanks a lot....it helped a lot
nice...good...notes.dats exactly wht i wanted
very helpful
nice notes
each line is explained very well
very helpful notes
good
Awsm guyz
Can score 200 on 100 frm dis
It is very nice & I hope that other people also think that it is very important for us
Amazing website with mind blowing information
very nice
So good
It is helpful
SO...HELPFULL
It.....ROCKSSSSS....it helps me a lottttt
THANKXXXXXXXXXXXXXXX
the best note it helped me lot
So helpful and to the point
V . EFFECTIVE, USEFUL
its awesome and helps more
it helped a lit
Cool to learn
good
toooo goood..helped me a lot for exams..:)
it gave very nice detailed explanation.
thanks lot of
thanks
thank u soo much.. nice
very helpful .. thank u sooo much
Tnx it hlped a Lt 2 srt out ma assignmnt
thanks a lot it helped!!!
Nce notes help me a lot
Thanks A Lot seriously it helped a lot
sooo helpful. I was cramping the day before exam and this was my perfect solution.
btw thnaks
Very helpful
it help to know more about composite fish culture
it help me to know more about composite fish culture
really helped me for my exam
it was very usefull.....
it was very nice and usefull 🙂 🙂
it's so useful during exams
very good notes
best notes from a student point of veiw
V good
Is good and nice
Was very helpful with the notes
Was very nice and good
Has helped a lot
Awesome and very helpful
Nice !
Good notes
very nice it is very useful
too good.. Thanks..
nice...
that's wat i am looking for thankzzzzzzzzz a lot
it is very use full
Excellent
Excellent keep it up
wonder full !!!!!!!!!
v.good
definitely helped
nc really hlpd
short and sweet
amazing.....
very fine
NICE
exelent good result
v.good
Nice it helps in study
it's good
it's good
it helped me
wooooooo!!!!!!! awsome bos !!!!!!! m lovin it
v.good
very clearly defined. it will help me a lot.
clearly defined. so useful for my studies
Very nice I liked it
This paved the way to improve my food resources
I...... like...... this
V.good
Definitely Helped
THIS SITE IS AMAZING!!!!!!!!!!THIS SITE IS A KIND OF WE NEED EVERY HELP OR ANY HELP TO TAKE THIS SITE...
I SAY THIS SITE IS DEFINATILY HELP TO THE PEOPLE OR STUDENTS WHOLE STUDENTS LIKE THIS SITE THEY HELP GROWTH TO OUR KNOWLEGE ..................THANKS A LOT..............
u suck
Wow awsome !!!!......!!!
I like it
Good
Keep it up
if u feel so pls stop using this site this site has helped me study 9 chapters of scince just one day before exam and i go0t 98 out of hundred for scince
Nice
Hey Can anyone provide me the class 9 science course for free by uploading on drive plz
Hiii wonderful aap
No u
your really right........................
This site was amazing and help the student to do his or her work
You are right
this is very goog
Very helpful
very nice
Very very helpful
So nice to study and easy to learn
nice.it helped a lot...thanxxx
To us , students, this is very very very helpful ....thanks a lot 4 giving us this informations .
nice......it helped a lot..........thanxxxxxxx..:p
6es
NICE
very very very nice
i like
thanks it really helped alot