Vol. 9, Issue 9 (2020)

Author(s):
Navaneet Kumar, Raj Kumar Pathak, Ved Prakash, Chandra Shekhar and Abhishek Tiwari

Abstract:
Field experiment was conducted during rabi 2017-18 and 2018-19 at Agronomy Resrearch Farm, A.N.D.U.A & T, Kumarganj, Ayodhya, to evaluate effect of various weed management practices on nutrient content and nutrient uptake of mustard (Brassica juncea (L.) Czern & Coss). The experiment was carried out with three replications in a Randomized Block Design (RBD) along with twelve treatments i.e., T₁-Pendimethalin (PE) @ 1000 g ha^-1; T₂-Isoproturon (POE) @ 1000 g ha^-1 at 20 DAS; T₃-Pendimethalin (PE) @ 1000 g ha^-1 + Hand weeding at 40DAS; T₄-Isoproturon (POE) @ 1000 g ha^-1 + Hand weeding at 40 DAS; T₅-Pendimethalin (PE) @ 1000 g ha^-1 + Paddy straw mulch @ 5 t ha^-1 at 2-3DAS; T₆-Isoproturon (POE) @ 1000 g ha^-1 + Paddy straw mulch @ 5 t ha^-1 at 2-3DAS; T₇-Metribuzin (PE) @ 175 g ha^-1; T₈-Metribuzin (PE) @ 175 g ha^-1 + Hand weeding at 40 DAS; T₉-Metribuzin (PE) @ 175 g ha^-1 + Paddy straw mulch @ 5 t ha^-1 at 2-3DAS; T₁₀-Paddy straw mulch @ 10 t ha^-1 at 2-3DAS; T₁₁-Hand weeding at 20 and 40DAS and T₁₂-Weedy check respectively. The soil of the experiment at field was silty loam in texture and medium in soil fertility status. Two hand weeding (20 and 40 DAS) followed by T₁₀ treatment (Paddy straw mulch applied @ 10 t ha^-1 at 2-3 DAS)were found more effective in increasing the yield and yield attributes of mustard. While between the various weed management practices. Maximum nutrients content and uptake by crop was recorded under the two hand weeding (20 and 40 DAS) T₁₁ treatment followed by paddy straw mulch @ 10 t ha^-1 at 2-3 DAS during both the years of experimentation.