Effect of weed control measures on yield and economics of rice (Oryza sativa)

Abstract

An on farm trial was conducted during the rainy (kharif) season of 2014-15 at eight locations (farmers’ field) of the district, to validate, refine and popularize the technology developed at Directorate of weed science, Jabalpur for managing weeds in rice (Oryza Sativa L.). Effectiveness of post emergence application of bispyribac sodium @ 25g/ha and azimsulfuron @ 35g/ha over pre emergence application of butachlor @ 2kg/ha and weedy check (farmer’s practices) was studied on yield and profitability of rice. Highest grain yield (5188kg/ha) of rice was recorded with the post emergence application of bispyribac sodium @ 25/ha followed by post emergence application of azimsulfuron @ 35 g/ha (4991kg/ha), pre emergence application of butachlor @ 2 kg/ha (4331 kg/ha) and weedy check (3544kg/ha). However, the highest net return of Rs. 68071/ha was fetched with the application of bispyribac sodium as post emergence followed by azimsulfuron as post emergence (Rs. 64013/ha), butachlor as pre emergence (Rs. 50547/ha) and unwedded control (Rs. 33527/ha).