Improvement in Food Resources Test - 5

Those nutrients that are required in larger quantity by plants are called macronutrients. Iron is required in small quantity, so, iron is not a macronutrient.

The branch of agricultural science dealing with production of field crop and management of the soil is called agronomy. Type of soil and type of plant that can be grown is the part of agronomy.

Rice is the principal cereal crop of India. It is grown in most of the part of India and used by most of the people as staple food.

The nutrients required in larger quantity are called macronutrients. Sulphur is required in larger quantity in comparison to Copper, zinc and Boron.

M.S. Swaminnathan is regarded as father of genetics in India. Green revolution that leads to production of wheat many fold due to hybridization experiments carried out by him. He is also regarded as father of Economic Ecology.

Dr. V.Kurien is known as the father of white revolution in India. White revolution increased the milk production in India many times by use of new breeds of cows and Buffalo.

Weeds are unwanted plants which grow with main crops and compete with main crop for nutrient, space and water.

Fertilizers contain nitrogen, phosphorous and potassium but iron (Fe) is not present in fertilizers.

Growing of two or more crops but in the definite row pattern is known as intercropping. Intercropping is an example of mix cropping.

Unwanted plants that grow in crop field are called weeds. Weeds compete with main crop plant for space and nutrients. Xanthium and Parthenium are weeds.