Effect of different post emergence herbicides on growth and yield of pigeonpea (Cajanus cajan L. Mill)

A field experiment titled "Effect of post emergence herbicides on Pigeonpea (Cajanus cajan L. Mill)" was conducted during the kharif season of 2023-24 at the College of Agriculture, Badnapur.to assess the response of different post emergence herbicides on growth and yield of pigeonpea (Cajanus cajan L. Mill).The experiment was arranged in a Randomized Block Design with three replications and thirteen treatments comprised of (T1) Weed Free, (T2) Weedy Check, (T3) Two hand weeding's at 20 and 40 DAS, (T4) Pendimethalin 30 EC @ 0.75 Kg ai/ha (PE) followed by Imazethapyr 10 SL @100 g ai/ha at 20 to 25 DAS fb + One Inter cultivation at 50 DAS, (T5) Chlorimuron ethyl 25 WP @ 9 g ai/ha at 20 to 25 DAS, (T6) Propaquizalop 2.5% + Imazethapyr 3.7% W/W @ 50 g + 75 g ai/ha at 20 to 25 DAS, (T7) Fenoxaprop ethyl 9.3 EC @ 70 g ai/ha at 20 -25 DAS, (T8) Sodium Acifluorfen 16.5 + Chlorimuron ethyl 8% @ 245 g ai/ha at 20 -25 DAS, (T9) Chlorimuron ethyl 9 g + Quizalofop ethyl 50 g ai/ha at 20 -25 DAS, (T10) Chlorimuron ethyl 6 g+ Quizalofop ethyl 37.5g ai/ha at 20 -25 DAS, (T11) Chlorimuron ethyl 9 g+ Fenoxaprop ethyl 70 g ai/ha at 20-25 DAS, (T12) Chlorimuron ethyl 6 g + Fenoxaprop ethyl 50g ai/ha at 20-25 DAS and (T13) Imazethapyr+ Imazamox @ 100 g ai/ha at 20-25 DAS.The gross plot size and net plot size was 5.4 x 5.0 m 2 and 3.6 x 4.6 m 2 respectively.The seed of pigeonpea variety BDN-711 was sown on June 30, 2023 through dibbling by planting one or two seeds per hill at a spacing of 90 cm x 20 cm, at an approximate depth of 4.0 cm.Treatment (T1) Weed Free recorded highest value of growth attributes viz., plant height, number of leaves and dry matter accumulation per plant at all growth stages of crop amongst the different weed management treatments.Among the different weed management treatment the highest highest seed yield (1655 kg ha -1 ) and straw yield (5511 kg ha -1 ) were recorded in (T1) weed free treatment.