Effect of tillage and weed control methods on growth and yield of kharif sesamum (Sesamum indicum L.) under upland situation

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dc.contributor.advisorBayan, H C.
dc.contributor.authorNath, Mrinmoy Jyoti
dc.date.accessioned2023-11-18T16:19:34Z
dc.date.available2023-11-18T16:19:34Z
dc.date.issued2021
dc.description.abstractA field experiment entitled “Effect of tillage and weed control methods on growth and yield of kharif sesamum (Sesamum indicum L.) under upland situation” was carried out during kharif, 2020 at P.G. Experimental Field, Department of Agronomy, B.N. College of Agriculture, AAU, Biswanath Chariali with the objectives of (i) Assess the effect of tillage and weed control methods on weed population and growth in kharif sesamum (ii) Evaluate the effect of different treatments on growth and yield of kharif sesamum and (iii) Suggest an effective weed control method(s) for kharif sesamum. The experiment was laid out in a split-plot design with two tillage operations (Zero tillage and Conventional tillage) as main plot treatment and six weed control methods viz., manual weeding twice at 20 DAS and 40 DAS; Quizalofop-p-ethyl 5% EC @ 0.05 kg a.i. ha-1 at 20 DAS; Imazethapyr 10% SL @ 0.075 kg a.i. ha-1 at 20 DAS; Quizalofop-p-ethyl 5% EC @ 0.05 kg a.i. ha-1 at 20 DAS + Rotary weeding at 40 DAS; Imazethapyr 10% SL @ 0.075 kg a.i. ha-1 at 20 DAS + Rotary weeding at 40 DAS and unweeded (control) as sub-plot treatment, replicated thrice. The results of the present investigation revealed that, the conventional tillage significantly suppressed weed dry weight at 20 and 40 DAS and resulted in marked increase of weed control efficiency at 40 DAS. Conventional tillage also recorded comparatively lower weed density (at all crop growth stages); lower weed dry weight (60 DAS and at harvest) and higher weed control efficiency (60 DAS and at harvest) over zero tillage. Significantly higher plant dry weight, initial crop growth rate, and capsules plant-1 were recorded under conventional tillage and resulted in significant increased of seed yield (823.58 kg ha-1), stover yield (3118.29 kg ha-1), harvest index (26.58%) and gross return (Rs 52,408 ha-1). However, comparatively higher B:C was recorded in zero tillage over conventional tillage. Weed control methods had significant effect on reducing the weed densityand weed dry weight at all the crop growth stages except at 20 DAS and resulted in increased weed control efficiency. Among the weed control methods, manual weeding twice recorded significantly lowest weed density, weed dry weight and better weed control efficiency over unweeded (control). Weed control methods also had significant effect on crop growth and yield attributing characters of sesamum. Among the weed control methods, manual weeding twice recorded significantly higher seed yield (1263.61 kg ha-1), stover yield (3647.86 kg ha-1), harvest index (30.40%) and B:C (2.67) and unweeded (control) recorded lowest seed yield (454.72 kg ha-1), stover yield (2717.61 kg ha-1) and B:C (1.39) in kharif sesamum. Cultivation of kharif sesamum under conventional tillage and weed suppression by manual weeding twice at 20 and 40 DAS can be judged as the best methods studied on the basis of better weed suppression, crop yield and economic indices.
dc.identifier.urihttps://krishikosh.egranth.ac.in/handle/1/5810201488
dc.language.isoEnglish
dc.publisherAAU, Jorhat
dc.subAgronomy
dc.themeEffect of tillage and weed control methods on growth and yield of kharif sesamum (Sesamum indicum L.) under upland situation
dc.these.typeM.Sc
dc.titleEffect of tillage and weed control methods on growth and yield of kharif sesamum (Sesamum indicum L.) under upland situation
dc.typeThesis
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