Who described. the use of letrazolium for assessing, seed quality and the basis of topographical patterns___________________?

A. Carbon cycle
B. Nutrient cycle
C. Nitrogen cycle
D. None of the above

A. Cropg pattern
B. Cropg index
C. Crop rotation
D. Cropg intensity

A. Succession
B. Retrogression
C. Biodiversity
D. Linear planting

A. Leaves
B. Straw
C. Grain
D. All the above

A. tropical
B. Temperature
C. Sub tropical
D. all

A. Harvest index
B. Seed index
C. Total yield
D. Dry matter