Agronomy research in the Asian cassava network: an overview 1987-1990.
1992
Howeler R.H.
Research on agronomic aspects of cassava in Asia is presently conducted in at least 10 countries, i.e. Thailand, Indonesia, India, China, Vietnam, Philippines, Malaysia, Myanmar (Burma), Sri Lanka and Laos. Since 1987 the CIAT Regional Office in Bangkok has been collaborating with scientists in national programs to conduct much of this research. Through frequent visits, training courses, workshops, and the distribution of cassava literature, a network is formed among cassava researchers in different countries, and researchers in one country thus remain informed about, and can learn from, the progress made in other countries. Since the 2nd Asian Cassava Workshop, held in Thailand in 1987, the agronomy research has concentrated mainly on those aspects related to erosion control and soil fertility management, because these topics were identified as needing a most urgent solution. Erosion control expt. are now being conducted in 10 locations in 5 countries, and long-term fertility trials with a standard design are being conducted in 13 locations in 7 countries. Other trials on various aspects of intercropping, green manuring, methods of planting, spacing, and cassava leaf production are being conducted in various locations. Results of these trials are summarized and some general conclusions are drawn. It is suggested that in the coming years more emphasis should be placed on on-farm research (OFR) in order to transfer the technology developed to the extension service and to farmers.
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