Effect of weed management practices on growth and yield of okra (Abelmoschus esculentus (L.) Moench.)

K. Shamla, P.V. Sindhu, Meera V. Menon

Abstract


A field experiment was conducted during the summer season of 2016 to study the effect of different weed management practices on growth and yield of okra as well as economics of cultivation. Treatments included four different organic mulches (mango leaves, paddy straw, newspaper and coir fibre mat), mulching with black polythene sheet, hand weeding, weed management by herbicide and an unweeded control. Black polythene sheet mulching was the best treatment for weed control. Pre emergence application of pendimethalin resulted in lower weed population and dry matter production during initial period of the crop and thereafter population and dry matter increased. Among organic mulches, newspaper mulching resulted in greater weed control followed by paddy straw mulching. Higher weed control efficiency (more than 90%) was obtained with black polythene sheet throughout the crop period. Mulching with paddy straw and newspaper resulted in lower weed index than hand weeding and pre emergence application of pendimethalin. Black polythene mulching recorded higher fruit yield of 14.58 Mg ha-1, followed by paddy straw mulching and newspaper mulching (11.16 and 11.01 Mg ha-1). Highest B:C ratio was also obtained with black polythene mulching.


Keywords


B:C ratio, Coir fibre mat, Mango leaves, Newspaper mulch, Okra, Organic mulches, Paddy straw, Polythene mulch, Weed management

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A KAU publication [CODEN: JTAGEI; ISSN 0971-636X; eISSN 0973-5399]