Integrated weed management on uptake of phosphorus and yield of onion (Allium cepa L.)

Field experiment were conducted during rabi 2019 and 2020 at the RRS Agwanpur Farm, department of horticulture, RRS, Agwanpur, Saharsa. The results showed that, significantly lowest uptake of phosphorus by weed and higher uptake by onion crop were observed under herbicides along with 2 hand weedings as compared to other treatments. The pre-emergence application of Fluchloralin @ 1.2 kg/ ha + 3 Hand weddings at 35 and 65 days after transplantation reduced weed menance and obtained highest yield of onion. Bulbs for local consumption as well as for export purposes. India ranks second in area and production in the world after China and third after Netherland and Spain.