Author(s):

Priyanka Priyadarsini, Abhinab Mishra and RM Satasiya

Abstract: A field experiment was conducted in order to study the weed parameters under plastic mulch, irrigation methods and levels. The effect of three irrigation levels viz.; 1.0 ET_c (I₁), 0.8 ET_c (I₂) and 0.6 ET_c (I₃) in combination with four cultivation practices; silver black plastic mulch (M₁), no mulch (M₂), flat bed with drip irrigation (M₃) and border irrigation (M₄) were studied on crop growth and yield response. The experiment was laid out in large plot technique taking twelve treatment combinations replicated thrice. The treatment combination of 0.6 ET_c with silver black plastic mulch resulted in minimum weed intensity of 13.00 nos/m², 32.67 nos/m² and 35.67 nos/m² at 30 DAS, 60 DAS and at harvest respectively. Significantly maximum weed intensity of 216.67 nos/m², 390.00 nos/m² and 431.00 nos/m² were observed in 1.0 ET_c with border irrigation at 30 DAS, 60 DAS and at harvest respectively. The treatment combination of 0.6 ET_c with silver black plastic mulch resulted in minimum dry weight of weed 2.00 g/m², 11.67 g/m² and 16.10 g/m² at 30 DAS, 60 DAS and at harvest respectively. Significantly highest dry weight of weed 85.00 g/m², 219.03 g/m² and 202.33 g/m² were observed in 1.0 ET_c with border irrigation at 30 DAS, 60 DAS and at harvest respectively. Overall it could be concluded that 0.6 ET_c irrigation levels along with silver black plastic mulch was found most economical and obtained least number of weed.

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