Which one of the following crops causes maximum reduction in soil alkalinity ?
Zero Hllage system was first used successfully in 1950 in pasture renovation in–
An annual weed rice field is–
Flow of water in saturated soil is described by–
Seed rate of transplanted basmati rice is–
Mat type nursery is related to–
The current per capita forest area in India is–
The most concentrated fertilizer used for nutrient supply is–