Effect of integrated weed management on weed and yield of sorghum (Sorghum bicolor L.)

Abstract

A field experiment entitled Effect of Integrated Weed Management on Weed and Yield of Sorghum (Sorghum bicolor L.) conducted during kharif 2024 at Agriculture farm, Suresh Gyan Vihar University, Jaipur on sandy loam soil. Among the integrated weed management treatments atrazine @ 0.50 kg ha-1 PE fb Metsulfuron methyl @ 6 g ha-1 PoE 25 DAS fb hand weeding at 40 DAS recorded significantly lower the weeds density and dry matter per m2. At 60 DAS and harvest stage minimum weed dry matter were recorded with application of Atrazine @ 0.50 kg ha-1 PE fb Metsulfuron methyl @ 6 g ha-1 PoE 25 DAS fb hand weeding at 40 DAS as compared to weedy check, atrazine @ 1.0 kg ha-1 (PE), atrazine @ 0.50 kg ha-1 PE fb atrazine 0.50 kg ha-1 (PoE) at 25 DAS, atrazine @ 0.50 kg ha-1 PE fb 2,4-D @ 0.50 kg ha-1 PoE at 25 DAS, atrazine @ 0.50 kg ha-1 PE fb Metsulfuron methyl @ 6 g ha-1 PoE and atrazine @ 1.0 kg ha-1 PE fb HW at 40 DAS and remained statistically at par with atrazine @ 0.50 kg ha-1 PE fb atrazine @ 0.50 kg ha-1 PoE 25 DAS fb HW at 40 DAS and atrazine @ 0.50 kg ha-1 PE fb 2,4-D @ 0.50 kg ha-1 PoE at 25 DAS fb HW at 40 DAS. The application of atrazine @ 0.50 kg ha-1 PE fb Metsulfuron methyl @ 6 g ha-1 PoE 25 DAS fb hand weeding at 40 DAS significantly increased the seed, straw, biological yield, net return and B: C ratio as compared to weedy check, atrazine @ 1.0 kg ha-1 (PE), atrazine @ 0.50 kg ha-1 PE fb atrazine 0.50 kg ha-1 (PoE) at 25 DAS, atrazine @ 0.50 kg ha-1 PE fb 2,4-D @ 0.50 kg ha-1 PoE at 25 DAS, atrazine @ 0.50 kg ha-1 PE fb Metsulfuron methyl @ 6 g ha-1 PoE and atrazine @ 1.0 kg ha-1 PE fb HW at 40 DAS and remained statistically at par with atrazine @ 0.50 kg ha-1 PE fb atrazine @ 0.50 kg ha-1 PoE 25 DAS fb HW at 40 DAS atrazine @ 0.50 kg ha-1 PE fb 2,4-D @ 0.50 kg ha-1 PoE at 25 DAS fb HW at 40 DAS.