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Year : 2021, Volume : 53, Issue : 2
First page : ( 164) Last page : ( 168)
Print ISSN : 0253-8040. Online ISSN : 0974-8164. Published online : 2021  24.
Article DOI : 10.5958/0974-8164.2021.00030.7

Effect of conservation agriculture practices on weed management in okra under rice- okra-green manure cropping system

Durga C.*, Anitha S.

Department of Agronomy, Kerala Agricultural University, Thrissur, Kerala, 680 656, India

*Email: durgaac42@gmail.com

Received:  07  ,  2021; :  29  ,  2021; Accepted:  02  ,  2021.

Abstract

A field experiment was carried out at Agronomy Farm, College of Agriculture, Vellanikkara in, Kerala, India a randomized block design consisted of ten treatments having three replicates during the years 2019 to 2021 to develop a conservation agricultural practices for upland rice-vegetable-green manure cropping system. It has been found that different conservation treatments had a significant effect on weed density, weed dry matter production, weed control efficiency, yield and economics in okra (lady finger). The results revealed that the lowest density and dry matter of weeds were recorded in direct-seeded rice in flat bed + green manuring followed by okra with crop residue mulch at 30,60,90 DAS and at harvest. Highest weed control efficiency (59-67%) and yield (16.47 t/ha) in okra was registered in direct-seeded rice in flat bed + green manuring followed by okra with crop residue mulch. The highest weed density and weed dry matter production was noticed in direct-seeded rice in flat bed-okra. While considering the whole cropping system the highest B:C was found in direct-seeded rice in flat bed + green manuring followed by okra-green manure based cropping system (3.31).

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Keywords

Brown manuring, Crop residue mulch, Flat bed, Green manuring, Raised bed, Rice-okra cropping system.

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