Vol. 11, Issue 3 (2022)

Author(s):
JR Vala and AS Bhanvadia

Abstract:
The field experiment was carried out during the kharif season of 2019 at Regional Research Station, Anand Agriculture University, Anand to study the effect of weed management practices on growth parameters and weed parameters in rice (Oryza sativa L.) nursery. The experiment was laid out in randomized block design with three replications which consist 14 treatments viz., T₁: Pendimethalin @ 750 g/ha PPI, T₂: Pendimethalin @ 750 g/ha PE, T₃: Pendimethalin @ 750 g/ha PPI fb Bispyribac sodium @ 20 g/ha PoE, T₄: Pendimethalin 750 g/ha PE fb Bispyribac sodium @ 20 g/ha PoE, T₅: Pretilachlor @ 500 g/ha PE, T₆: Anilofos @ 300 g/ha PE, T₇: Oxadiargyl @ 90 g/ha PE, T_8: Ethoxysulfuron @ 15 g/ha PoE, T₉: Bispyribac sodium @ 20 g/ha PoE, T₁₀: Metsulfuron methyl + Chlorimuron ethyl @ 4 g/ha PoE, T₁₁: Penoxsulam @ 20 g/ha PoE, T₁₂: Rabbing of farm waste @ 10 t/ha, T₁₃: Hand weeding at 15 DAS and T₁₄: Weedy check. The result revealed that hand weeding at 15 DAS registered higher number of germinated seedlings, number of seedlings, transplantable seedlings, fresh weight and dry weight of rice seedlings. Penoxsulam @ 20 g/ha PoE recorded highest height, root and shoot length of rice seedlings. The lowest weed count, total weed fresh weight, total weed dry weight and highest weed control efficiency were recorded under hand weeding at 15 DAS. Among the herbicidal treatments, lowest weed count, minimum total weed fresh weight, minimum total weed dry weight and maximum weed control efficiency were obtained under application of penoxsulam @ 20 g/ha PoE followed by metsulfuron methyl + chlorimuron ethyl @ 4 g/ha PoE.