Biological constraints to farmers' rice yields in three Philippine provinces

Datta, S.K.De and Garcia, F.V. and Chatterjee, A.K. and et al, . (1979) Biological constraints to farmers' rice yields in three Philippine provinces. Other. International Rice Research Institute (IRRI), Los Bafios, Laguna, Philippines.

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Abstract

Research on constraints to high rice yields in selected farmers' fields began in the 1974 wet season in Nueva Ecija, in the 1975 dry season in Camarines Sur, and in the 1976 dry season in Iloilo province, Philippines, and continued through 1977. Results during the wet seasons in Nueva Ecija showed that a high level of inputs raised rice yields above the farmers' level by 1.6 t/ha in 1976 and by 1.3 t/ha in 1977. More than 50% of the difference in yield during the two wet seasons was due to improved insect control while the remainder was due to better fertilizer management. Farmers' weed control measures in the study area were adequate. In the 1977 dry season, the average yield increase from a high input level was 2.2 t/ha. Insect control contributed 48% to the difference while fertilizer and improved weed control contributed 43% and 9%, respectively...

Item Type:	Monograph (Other)
Author Affiliation:	Agronomist, Department of Agronomy, The International Rice Research Institute (IRRI), Los Bafios, Laguna, Philippines
Subjects:	Plant Production
Divisions:	Other Crops
Depositing User:	Ms K Syamalamba
Date Deposited:	31 Oct 2012 06:24
Last Modified:	31 Oct 2012 06:24
URI:	http://eprints.icrisat.ac.in/id/eprint/8596

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