science std 9

1. 9. Quality Food, Quality Life

2. India- Densely Populated Nation Lot of food – Increasing demand
More land – [More Cultivation ]
Food Obtain Energy
Nutrients
Carbohydrates
Proteins
Fats
Vitamins
Minerals
Growth
Development
Health
Need of better methods to improve
Food production & quality of crops

3. Before 1965, there was drought in many parts of India.
Therefore, Government decided to use Fertilizers, Better
methods of irrigation & High yielding variety of seeds.
To improve food production
Green revolution
Dr. Norman Ernest Borlaug,
An American agronomist
FATHER OF THE GREEN
REVOLUTION

4. White revolution
In 1970,Indian National Dairy & Development Board (NDDB)
started.
OPERATION FLOOD- To make milk available in plenty.
Now , India has become the largest producer of milk & milk
products.
Anand Milk Union Limited [AMUL] was the driving force
behind this movement
Prof . Verghese Kurien
Chairman of the NDDB
FATHER OF WHITE REVOLUTION

5. BETTER crop yields
Cereals rice, wheat, jowar Carbohydrates
Pulses gram, black gram,green gram
Proteins
Oil Seeds groundnut, mustard, soyabean
Fruits, Vegetables, Spices vitamins,minerals
Fodder crops sudan grass, Rhodes grass, livestock
Barseem, etc

6. What is Crop???
Defined as
The plants of the same variety grown at a
place at the same time on a large scale
are referred to as crop.
CULTIVATIONincludes several activities done by farmers
these activities are spread over a period of time

8. Hybrid crops
Hybridization
Hybridization is a technique of cross – breeding two
different varieties of crop plants each having the
desired characteristic, to obtain a new varieties
having a combination of the desired characteristics.
Hybrid seeds
 Higher yields
 Better quality
 Better resistance to diseases & pests
 Short period of maturation
Examples of hybrid varieties
High yielding varieties
[hyv]