Himachal Journal of Agricultural Research

Shagun Shukla ¹, Suresh Kumar ¹, Sandeep Manuja ¹, Shabnam Thakur ¹

Affiliations
1 Department of Agronomy, College of Agriculture CSK Himachal Pradesh Krishi Vishvavidyalaya, Palampur-176 062,, IN

Abstract

A field experiment was conducted during kharif 2021 at the Research Farm of Department of Agronomy, College of Agriculture, CSK Himachal Pradesh Krishi Vishvavidyalaya, Palampur, to study the effectiveness of a new post-emergence broad-spectrum herbicide GOD H008 (Bispyribac sodium 5% SC+ Pyrithiobac sodium 12.5% SG) to control mixed weed flora in direct-seeded upland rice (Oryza sativa L). The experiment was laid out in Randomized Block Design with three replications and seven weed control treatments. The treatments consisted of three doses of GOD H008 (Bispyribac sodium 5% SC+ Pyrithiobac sodium 12.5% SG) viz. 375ml/ha, 500ml/ha and 625ml/ha, bispyribac sodium 250ml/ha, pyrithiobac sodium 625ml/ha, hand weeding (weed free) and untreated check respectively. The predominant weed flora present in the experimental field was Ageratum conyzoides, Cyperus rotundus, Commelina benghalensis, Echinochloa colona, Digitaria sanguinalis and Synedrella nodiflora. Application of new herbicide combination product GOD H008 (Bispyribac sodium 5% SC+ Pyrithiobac sodium 12.5% SG) 500ml/ha being statistically at par with GOD H008 (Bispyribac sodium 5% SC+ Pyrithiobac sodium 12.5% SG) 625ml/ha and bispyribac sodium 250ml/ha resulted in significantly lower total weed count, total weed dry weight and highest weed control efficiency as compared to other weed control treatments. Significantly highest grain and straw yield were recorded with the application of GOD H008 (Bispyribac sodium 5% SC+ Pyrithiobac sodium 12.5% SG) 500ml/ha at harvest and this treatment was closely followed by GOD H008 (Bispyribac sodium 5% SC+ Pyrithiobac sodium 12.5% SG), 625 ml/ha.

Keywords

GOD H008 (Bispyribac sodium 5% SC+ Pyrithiobac sodium 12.5% SG), weed control, direct seeded rice.

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Shabnam Thakur ¹, Suresh Kumar ¹, Sandeep Manuja ¹, Shagun Shukla ¹

Affiliations
1 Department of Agronomy, College of Agriculture CSK Himachal Pradesh KrishiVishvavidyalaya, Palampur-176062,, IN

Abstract

A field experiment was conducted during kharif 2021 at the Research Farm of Department of Agronomy, College of Agriculture CSK Himachal Pradesh Krishi Vishvavidyalaya, Palampur, to study the bio-efficacy of flumioxazin against mixed weed flora in grassland. The experiment was laid out in Randomized Block Design with three replications. The experiment consisted of nine weed control treatments viz., flumioxazin 150 g/ha, 200 g/ha, 250 g/ha, 300 g/ha, 500 g/ha, oxyfluorfen 1000 g/ha, weed free, glyphosate 4000 g/ha and untreated control. The major weeds in the experiment area were Ageratum conyzoides, Erigeron canadensis, Bidens pilosa, Cynodon dactylon, Cyperus sp., Digitaria sanguinalis and Plantago lanceolata. The results revealed that post-emergence application of flumioxazin 500 g/ha, which was statistically at par with flumioxazin 300 g/ha, flumioxazin 250 g/ha, flumioxazin 200 g/ha and glyphosate 4000 g/ha were quite effective in controlling weeds with higher weed control efficiency. Application of flumioxazin 300 g/ha resulted in significantly higher fresh and dry herbage yield of grasses which was at parwith flumioxazin 500 g/ha, 250 g/ha and 200 g/ha.

Keywords

Flumioxazin, weed control, grassland.

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