Response of Summer Greengram (Vigna radiata L.) to Different Row Spacing and Weed Management Practices Under South Gujarat Condition Panchal C. C.1, Chaudhary J. H.1,*, Solanki K.B.2, Chaudhari M.P.1 1Navsari Agricultural University, Navsari, Gujarat 2PTL, Govt. of Gujarat, Gandhinagar *Email: jivraj89@gmail.com
Online published on 23 December, 2016. Abstract A field investigation was carried out at College Farm, N. M. College of Agriculture, Navsari Agricultural University, during summer 2014 to evaluate Response of summer greengram (Vigna radiata L.) to different row spacing and weed management practices under South Gujarat condition. Based on field experimentation, the periodical weed population except at 20 DAS and dry weight of weeds at 60 DAS and at harvest were significantly influenced by various row spacings. Wider spacing of 60 cm x 10 cm (S3) noted significantly the highest weed population at 40 and 60 DAS as well as dry weight of weeds at 60 DAS and at harvest over treatment S1 (30 cm x 10 cm). Significantly the highest weed population at all the growth stages of greengram with regard to monocot, dicot, sedge and their totalwere noted under unweeded control (W6). All the weed management treatments significantly reduced the population of weeds compared to unweeded control. At the different stages of plant growth particularly at 20 DAS, W4 (Pendimethalin @ 1.0 kg/ha as PE + quizalofop-ethyl @ 0.05 kg/ha at 20 DAS as PoE) treatment resulted in significantly the lowest value of weed population being at par with treatment W3 (Pendimethalin @ 1.0 kg/ha as PE + one hand weeding at 40 DAS) and W2 (Pendimethalin @ 1.0 kg/ha as PE) than the other treatments. At 40 DAS, significantly lower weed population showed under treatment W4 (Pendimethalin @ 1.0 kg/ha as PE + quizalofop-ethyl @ 0.05 kg/ha at 20 DAS as PoE) which remained at par with W1 (Two hand weeding and interculturing at 20 abd 49 DAS) and W5 (Quizalofop-ethyl @ 0.05 kg/ha as PoE at 20 DAS). Similarly at 60 DAS, treatment W1 (Two hand weeding and interculturing at 20 and 40 DAS) resulted in significantly the lowest value of weed population being at par with treatment W3 (W2 + one hand weeding at 40 DAS) and W4 (Pendimethalin @ 1.0 kg/ha as PE + Quizalofop-ethyl @ 0.05 kg/ha as PoE at 20 DAS). The highest dry matter of weeds at 60 DAS and at harvest was observed in unweeded control treatment (W6). Treatment W1 (Two hand weeding and interculturing at 20 and 40 DAS) recorded the lowest dry weight of weeds being at par with treatment W3 (Pendimethalin @ 1.0 kg/ha as PE + one hand weeding at 40 DAS) and W4 (Pendimethalin @ 1.0 kg/ha as PE + Quizalofop-ethyl @ 0.05 kg/ha as PoE at 20 DAS). Top Keywords Dry weight, Greengram, Spacing, Weed Population. Top |