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Crop and Soil Responses to Post-emergence Tillage and Weed Control in Lowland Rice

Published online by Cambridge University Press:  03 October 2008

Joel D. L. C. Siopongco
Affiliation:
Agronomy, Plant Physiology and Agroecology Division, International Rice Research Institute, Los Baños, Laguna, Philippines
Keith T. Ingram
Affiliation:
Agronomy, Plant Physiology and Agroecology Division, International Rice Research Institute, Los Baños, Laguna, Philippines
Paquito P. Pablico
Affiliation:
Agronomy, Plant Physiology and Agroecology Division, International Rice Research Institute, Los Baños, Laguna, Philippines
Keith Moody
Affiliation:
Agronomy, Plant Physiology and Agroecology Division, International Rice Research Institute, Los Baños, Laguna, Philippines

Summary

Beusani is a rice crop management system practised in rainfed lowland areas of eastern India whereby rice is dry-seeded, then wet-ploughed at 30–50 days after emergence and the land levelled by drawing a board across the field. Field experiments showed that beusani enhances rooting, especially in shallow soil layers, as a result of reduced penetration resistance. Although beusani reduced weed biomass by 38%, it was not as effective as application of herbicide followed by hand weeding, which reduced biomass by 87%. Yields were directly related to weed control, so beusani treatments did not yield as much as the herbicide plus hand weeding treatments in these experiments.

Type
Research Article
Copyright
Copyright © Cambridge University Press 1994

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References

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