Indian Journal of Agronomy

  • Year: 2019
  • Volume: 64
  • Issue: 1

Impact of integrated weed management on weeds and yield of direct-seeded rice (Oryza sativa)

  • Author:
  • Pratik Sanodiya1,, Manoj Kumar Singh2
  • Total Page Count: 5
  • DOI:
  • Page Number: 62 to 66

1Assistant Professor, Faculty of Veterinary and Animal Sciences, RGSC, Barkachha, BHU, Mirzapur, Uttar Pradesh, 231 001

Institute of Agricultural Sciences, Banaras Hindu University, Varanasi, Uttar Pradesh, 221 005

2Professor, Department of Agronomy, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi, Uttar Pradesh, 221 005

Abstract

A field investigation was conducted during the rainy season of 2014 and 2015 at Varanasi, Uttar Pradesh, to study the impact of integrated weed management on weeds and yield of direct-seeded rice (Oryza sativa L.). At 30, 60, 90 days after sowing (DAS) and harvesting, amongst the integrated weed-management treatments, penoxsulam 35 g/ha at 10 DAS followed by (fb) 1 hand-weeding at 35 DAS reduced the weed density of grasses, sedges and broad-leaf weeds and their dry weight than penoxsulam 35 g/ha at 20 DAS fb 1 hand-weeding at 35 DAS, thus resulting in the lowest weed index. Penoxsulam 35 g/ha at 10 DAS fb 1 hand weeding at 35 DAS exhibited the highest weed-control efficiency over rest of the treatments except hand-weeding at 15 and 35 DAS. Penoxsulam 35 g/ha at 10 DAS fb 1 hand-weeding at 35 DAS statistically influenced the grain and straw yields and harvest index over all other treatments except hand-weeding at 15 and 35 DAS. Also the highest net return and benefit: cost ratio were observed under penoxsulam 35g/ha at 10 DAS fb1 hand-weeding at 35 DAS.

Keywords

Azimsulfuron, Bispyribac Na, Chlorimuron ethyl, Direct-seeded rice, Economics, Metsulfuron methyl, Penoxsulam