In Indonesia, annual growth rates for cassava production and yield from 1961 to 2000 were 0.81% and 1.35%, respectively. However, the harvested area decreased at an average annual rate of 0.61%. The average yield of about 12 tonnes of fresh roots/ha is much below the potential yield of 20 to 40 t...
Wargiono, J.
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Widodo, Yudi
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Utomo, Wani Hadi
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[Cassava agronomy research and adoption of improved practices in Indonesia: Major achievements during the past 20 years]
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Cassava agronomy research and adoption of improved practices in Indonesia: Major achievements during the past 20 years
Improved cassava varieties have been widely disseminated to farmers in Lampung and this has resulted in substantial economic gains to both factories and farmers. But, considering that the rainfall distribution in Lampung province is not uniform and that there is a prolonged dry period about every...
Fauzan, Ir
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Puspitorini, Palupi
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[Effect of date of planting and rainfall distribution on the yield of five cassava varieties in Lampung, Indonesia]
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Effect of date of planting and rainfall distribution on the yield of five cassava varieties in Lampung, Indonesia
A pilot project on the use of Farmer Participatory Research (FPR) methodologies with the objective of enhancing farmer adoption of practices that minimize soil erosion in cassava-based cropping systems, was conducted jointly by DOA and DOAE with technical and financial support from CIAT in two si...
Vongkasem, V
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Klakhaeng, Kaival I.
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Hemvijit, S.
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Tongglum, Anuchit
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Katong, S.
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Suparhan, Danai
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[Farmer participatory research in soil management and varietal selection in Thailand]
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Farmer participatory research in soil management and varietal selection in Thailand
The concept and methodology used in the transfer of technology (TOT) have undergone changes over the years corresponding to farmers' needs, and as a result, farmer participatory TOT has become more relevant, especially in complex diversified risk-prone (CDR) farming systems. The TOT in cassava, w...
Ramanathan, S.
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Anantharaman, M.
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[Farmer participatory research in cassava technology transfer in India]
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Farmer participatory research in cassava technology transfer in India
Soil degradation, both due to soil erosion and nutrient removal, is a major problem in cassava fields. Most of the existing management technologies that have been developed have had little success in adoption. Some of the reasons are that the technology developed is technically oriented, based on...
Utomo, Wani Hadi
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Suyamto, H.
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Santoso, H.
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Sinaga, A.
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[Farmer participatory research in soil management in Indonesia]
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Farmer participatory research in soil management in Indonesia
Nutritional studies of cassava have shown that in high-P acid laterite soils, there was no response to P application during four years of consecutive cropping. In low-P soil, even though cassava initially responded to 100 kg P2O5/ha, the response gradually declined. The optimum economic dose of P...
Mohankumar, C.R.
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Potty, V.P.
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Ravindran, C.S.
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Kabeerathumma, S.
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Sudharmai Devi, C.R.
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[Progress in agronomy research in India]
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Progress in agronomy research in India
Annual growth of cassava production in the main cassava production areas during the last five years seems to have kept pace with the increase in population, while the harvested area of cassava increased only 0.6% annually. Of the total cassava produced, about 54% is used for human food, 28% for i...
Wargiono, J.
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Kushartoyo
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Suyamto, H.
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Guritno, Bambang
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[Recent progress in cassava agronomy research in Indonesia]
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Recent progress in cassava agronomy research in Indonesia
In recent years the National Root and Tuber Crops Program of Vietnam, with the cooperation and assistance of the Centro International de Agricultura Tropical (CI AT), has drawn up a plan for strengthening the research and development capacity, with the objective of improving cassava production in...
Nguyen Huu Hy
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Pham, Van Bien
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Nguyen The Dang
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Thai Phien
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[Recent progress in cassava agronomy research in Vietnam]
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Recent progress in cassava agronomy research in Vietnam
Over the period 1994-1996, seven batches of seeds and two of meristem tissue cultures were evaluated and selected. As important as root yield is the trait starch content (or dry matter content) if a clone is to be accepted as a starch cultivar. At the time of reporting a number of clones have bee...