Ratio of economic yield to biological yield expressed in percentage is called ____?
A. Harvest index
B. Seed index
C. Total yield
D. Dry matter
The control and preservation of natural resources for present and future use is called ____?
A. Sustainability
B. Conservation
C. Crop residue management
D. None of above
Plants having no defined limits of vegetative and reproductive element is called ____?
A. Absolute growth
B. Assimilation
C. Indeterminate growth
D. Determinate growth
Ratio of crop yield to the amount of water utilized is called ____?
A. Soil water use
B. Crop water use efficiency
C. Soil plant water relationship
D. Water intensity
Percentage of area irrigated by a cusec of water during the season is called ______?
A. Intensity
B. Base period
C. Cusec
D. Irrigation frequency
The leguminous plants are important in agriculture because _____?
A. They need very little water to grow
B. Six crops are harvested in a year
C. They are disease resistant
D. Help in nitrogen economy of nature
One of the plant introduced from new world to the old world is ______?
A. Rice
B. Wheat
C. Sugarcane
D. Potato
Which is the most important cereal crop of temperature region _____?
A. Paddy
B. Maize
C. Wheat
D. Barley
Delta of water for cotton crop is ______?
A. 30 acre inches
B. 25 acre inches
C. 18 acre inches
D. non of these
In cotton the recommended R x R distance is ____?
A. 75 cm
B. 90 cm
C. 45 cm
