General Agriculture / Q & A SectionImportant One Liners Question and Answer Share With Your Agri Friends Bench terracing is done when slope is more:- 15% Mass per unit volume is called: Bulk density. Disk plough is used when the soil is: – Tough. First man made cereal is:- Triticale. Cheapest N contains fertilizer is: Urea. First product of urea hydrolysis: Ammonium carbamate. NABARD was set up on the recommendation of: Siva Raman committee Free living nitrogen fixing organism is: -Azatobacter The fruit of mustard is known as: – Siliqua. Supplemental irrigation is known as:-Life saving irrigation Major agricultural importing commodity in India is: Edible oil (65%) Lunishree is a variety of:- Super rice. Plants with separate male and female flower on same plant are known as: Monoecious {agrilearner} National biodiversity board is situated at: New Delhi. Major P fertilizer commonly used in India is: DAP Share With Your Agri Friends