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VOL. 6, ISSUE 6 (2021)
Effect of weed management strategies on the growth and yield performance of blackgram
Authors
Suseendran K, Nidheesh S, S Jawahar, C Kalaiyarasan, S Kalaisudarson, A P Srinivasaperumal
Abstract
Field experiment was conducted at farmer’s field at Gudamalai village, Gangavallitaluk, Salem district during Rabi season 2019 to evaluate the performance of different pre emergence and early post emergence herbicides on weeds and productivity of blackgram under irrigated conditions. The experiment was laid out in randomized block design with three replications. The experiment consists of ten treatments T1- Pendimethalin @ 1.0 kg ha-1 on 3 DAS, T2- PE Pendimethalin @ 1.0 kg ha-1 on 3 DAS + EPOE Imazethapyr + imazamox (RM) 70 g/ha (Odyssey), T3- PE Pendimethalin (38.7%) @ 0.75 kg ha-1 on 3 DAS, T4- PE Pendimethalin (38.7%) @ 0.75 kg ha-1 on 3 DAS + HW on 25 DAS, T5- PE Pendimethalin (38.7%) @ 0.75 kg ha-1 on 3 DAS + EPOE Imazethapyr + imazamox (RM) 70 g/ha (Odyssey), T6- PE Oxadiazone @ 250 g ha-1 on 3 DAS + EPOE Imazethapyr @ 70 g ha-1 (2 -3 leaf stage of weeds),T7- PE Oxadiazone @ 250 g ha-1 on 3 DAS + EPOE Imazethapyr @ 70 g ha-1 + Quizalofop-ethyl @ 50g/ha(2 -3 leaf stage of weeds, T8- EPOE Imazethapyr @ 70 g ha-1 + Quizalofop-ethyl @ 50g/ha (2 -3 leaf stage of weeds)– Tank mix, T9- Hand Weeding twice @ 20 and 40 DAS, T10- Unweeded check. Among the different weed control treatments imposed hand weeding twice at 20 and 40 DAS (T9) registered the maximum growth and yield of irrigated blackgram due to reduced weed growth, weed dry matter production and reduction in nutrient depletion by weeds and increased nutrient uptake by the cropandthe maximum growth (Plant height, leaf area index and Dry matter production) yield attributes (Number of pods per plant, Number of seeds per pod )and Yield (Grain yield kg ha-1, Haulm yield kg ha -1) of irrigated blackgram due to reduced weed growth, weed dry matter production and reduction in nutrient depletion by weeds and increased nutrient uptake by crop and this was followed by pre emergence application of Pendimethalin (38.7%) @ 0.75 kg ha-1 on 3 DAS + EPOE Imazethapyr + imazamox (RM) 70 g/ha (Odyssey) (T5). The higher weed density, weed dry matter production, WCE, HET and minimum growth and yield and yield attributes was recorded under unweeded check (T10).
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Pages:1409-1413
How to cite this article:
Suseendran K, Nidheesh S, S Jawahar, C Kalaiyarasan, S Kalaisudarson, A P Srinivasaperumal "Effect of weed management strategies on the growth and yield performance of blackgram ". International Journal of Botany Studies, Vol 6, Issue 6, 2021, Pages 1409-1413
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