The average cassava yield of 21 t/ha in India compares favorably with a world average of 10 t/ha. On-farm trials have revealed that it is possible to increase yields to more than 30t/ha through more intensive management. The Cassava Technology Transfer Programme (CTTP) in India has passed through...
Being easy to grow and drought tolerant, cassava is a popular crop among Thai farmers, particularly in the Northeast and East. The area planted annually is 1.28-1.60 million hectares. Because of drought and infertile soils in these areas, cassava yields average only 13-14 t/ha with about 18 perce...
Klakhaeng, Kaival I.
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Boonmark, Charungsri
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Chainuvat, Chavalvut
,
[Cassava extension organization and activities in Thailand]
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Cassava extension organization and activities in Thailand
Economically and politically, cassava is considered less important than rice, soybean and maize. Government's investment in the infrastructure and institutions for cassava extension and technology transfer is far less than those for the three major food crops. The infrastructure for varietal diss...
This paper describes the general situation and the existing problems of the extension of new cassava varieties, agronomic practices as well as processing technologies under the conditions of highly intensive agriculture in China.
Cassava has been cultivated in China for over 170 years. Its produc...
Lin, Xiong
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Li, Kaimian
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[Methods and strategies for cassava technology transfer in China]
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Methods and strategies for cassava technology transfer in China
Breeding philosophies and methodologies developed for favorable conditions and high-input agriculture have been ineffective in generating improved cultivars for marginal conditions and low-input agriculture. The project is implementing a novel breeding approach for barley improvement in the low-p...
Ceccarelli, Salvatore
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Kafawin, O.
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Saoub, H.
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Grando, Stefania
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Halila, H.
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Ababneh, M.
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Shakatreh, Y.
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Bailey, Elizabeth
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[Increasing the relevance of breeding to small farmers: Farmer participation and local knowledge in breeding barley for specific adaptation to dry areas of Jordan]
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Increasing the relevance of breeding to small farmers: Farmer participation and local knowledge in breeding barley for specific adaptation to dry areas of Jordan
Participatory plant-breeding (PPB) methods were used to develop two acceptable, cold-tolerant rice varieties in Nepal: Maehhapuchhre-3 (M-3) and Machhapuchhre-9 (M-9). Both were derived from the cross Fuji 102 Chhomrong Dhan. Following the introduction of these varieties from 1993 to 1998,the cha...
Joshi, Krishna D.
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Sthapit, B.R.
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Witcombe, John R.
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[The impact of participatory plant breeding (PPB) on landrace diversity: A case study for high-altitude rice in Nepal]
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The impact of participatory plant breeding (PPB) on landrace diversity: A case study for high-altitude rice in Nepal
Developing maize varieties that will be readily adopted by subsistence farmers is challenging as there are numerous characteristics in addition to agronomic performance that are important to these farmers. Furthermore, these preferences vary from location to location. it may be logical lo conclud...
Ransom, J.K.
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Koirala, K.B.
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Rajbhandari, N.
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Adhikari, K.
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[Involving farmers in the development process to improve adoption of varieties developed by National Maize-Breeding Programs]
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Involving farmers in the development process to improve adoption of varieties developed by National Maize-Breeding Programs
This paper reviews some of the participatory research in high-potential production systems on participatory varietal selection in high-potential production systems. This collaborative research is conducted by the Centre for Arid Zone Studies, UK; Local Initiatives in Biodiversity Research and Dev...
Witcombe, John R.
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[Participatory varietal selection in high-potential production systems]
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Participatory varietal selection in high-potential production systems
This paper presents a case study based on the findings in two villages in eastern Uttar Pradesh, India, part of a project started in 1997 to develop, test, and refine methodologies of participatory research and gender analysis as they apply to the development of new technologies in germplasm and ...
Paris, T.R.
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Singh, Abha
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Luis, Joyce
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Singh, Hari Nath
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Singh, Omkar
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Singh, Sinjay
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Singh, Ram Kathin
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Sarkarung, Surapong
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[Listening to farmers' perceptions through participatory rice varietal selection: A case study in villages in Eastern Uttar Pradesh, India]
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Listening to farmers' perceptions through participatory rice varietal selection: A case study in villages in Eastern Uttar Pradesh, India
Participatory varietal selection (PVS) was used to try to identify an alternative to the most popular rice variety, Pusa 44, in the Patiala district of the Punjab. Pusa 44 (released in 1993 in India but not recommended for the Punjab) is grown in over 50% of the rice area in Patiala. It is highly...
Mali, S.S.
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Virk, Daljit S.
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Singh, K.B.
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Witcombe, John R.
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[Participatory varietal selection in rice in the Punjab]
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Participatory varietal selection in rice in the Punjab