Blind tillage refers to–
The normal form of plant is maintained by–
Process of loosening for separating fibres from plant is known as–
True density of most mineral soils is usually–
Nitrogen fixation in soil by Rhizobium is increased by–
Dropsy disease in human beings is caused by which weed?
Which country is the place of origin of sunflower?
How many agrodimatic zones are categorized in India ?