Sequential application of herbicides for weed management in direct-seeded basmati rice Puniya R.1,*, Bazaya B.R., Kour Tanjot, Kumawat S.N., Kaur Supneet AICRP on Weed Management, SKUAST-Jammu, Chatha, Jammu, J&K180009, India 1Present address: College of Agriculture-Kumher, SKNAU, Jobner, Jaipur, Rajasthan303328, India *Corresponding author email: ramagron@gmail.com
Online Published on 18 January, 2024. Abstract Due to the water issue and labour shortage during cultivation of rice in India, there is an urgent need to shift towards the alternatives of puddled transplanted rice. Therefore, direct-seeded rice (DSR) is emerging as a productive technique in place of puddle transplanted rice to tackle this situation. The primary biological obstacles to its success, however, are weeds. Therefore, a study has been conducted comprising of 10 treatments with three replications in direct-seeded rice cv. ‘Basmati 370’ during the Kharif (rainy) seasons of 2018 and 2019 at Research Farm of AICRP-Weed Management, Chatha, SKUAST-Jammu in a randomized block design. At 60 DAS, significantly lowest density as well as biomass of grassy weeds were recorded in oxyfluorfen 175 g/ha as pre-emergence (PE) fb fenoxaprop-p-ethyl + 2,4-D-EE (60+500 g/ha) at 25 days after sowing (DAS). However, significantly lowest Cyperus species density and biomass was noticed in pendimethalin 1000 g/ha as PE fb bispyribac-sodium 25 g/ha at 25 days after sowing. More than 80% weed control efficiency was observed in oxyfluorfen 175 g/ha as pre-emergence (PE) fb fenoxaprop-p-ethyl + 2,4-D-EE (60+500 g/ha), pendimethalin 1000 g/ha as PE fb bispyribac-sodium 25 g/ha and pretilachlor 600 g/ha fb penoxsulam + cyhalofop-butyl 150 g/ha. In addition to this, the results revealed that significantly higher grain and straw yield of rice with highest net returns and benefit cost ratio were observed in pendimethalin 1000 g/ha as PE fb bispyribac-sodium 25 g/ha at 25 DAS. The findings of this study will help farmers who are cultivating direct-seeded rice to make decisions on the application of herbicides based on the weed flora existing in the field. Top Keywords Basmati rice, Direct-seeded rice, Herbicide, Weed control efficiency, Weed management. Top |