The 'Principle of diminishing returns'

Micro water shed has an area of

Nuclei contain densely granular region called 

Which type of mould board is most suitable for tough soils full of grasses?

Axenic culture is 

Which of the following is the correct sequence of reagents given below used in the Gram staining process?

(A) lodine

(B) Crystal violet

The state having highest forest area is

Which of the following wheat sp. occupies maximum area in India? 

Leaf curl disease of cotton is due to 

The application of organic manures in the soil helps in/tends to:

The site specific crop management approach that applies agro-chemicals to the field in an economical and environment friendly manner is known as ____.