Recent progress in cassava agronomy research in Thailand

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dc.creatorTongglum, Anuchit
dc.creatorPornpromprathan, V.
dc.creatorPaisarncharoen, K.
dc.creatorWongviwatchai, C.
dc.creatorSittibusaya, C.
dc.creatorJantawat, Somjate
dc.creatorNual-on, T
dc.creatorHoweler, Reinhardt H.
dc.date1998
dc.date2017-03-14T08:36:11Z
dc.date2017-03-14T08:36:11Z
dc.date.accessioned2026-06-27T14:35:01Z
dc.descriptionCassava agronomy research in Thailand during 1994-1996 emphasized mainly erosion control, soil fertility maintenance and weed control. Regarding soil erosion control, the planting of cassava in April, at the start of the rainy season, and harvesting in March resulted in the highest soil loss compared with other planting dates. Planting at the start of the dry season in Dec and harvesting in Nov produced by far the highest cassava yield, while soil loss due to erosion was relatively low. Intercropping cassava with either peanut or pumpkin were found to be the best cropping systems to reduce erosion while also giving high gross incomes. Cassava planted on contour ridges at closer spacing (1.0x0.6 m) and with fertilizer application was the most promising package of cultural practices for reducing erosion and increasing yields. Soil fertility maintenance through the use of legumes grown for in-situ production of mulch was studied at Rayong Research Center. The highest yield of cassava, 46.17 t/ha, was obtained when Crotalaria juncea was planted as a green manure and mulched, followed by planting cassava, which was then harvested after 18 months. When Canavalia ensiformis was intercropped with cassava, cut at 2 months and left as a mulch, the yield of cassava, harvested at 12 months, was as high as that obtained with a high rate of chemical fertilizers. The sequential planting of fertilized Rayong 60 after unfertilized peanut, produced the highest yield at Kalasin in the Northeast. The cultivar Rayong 5 planted in either Sattahip or Banbung soils in the East produced a relatively high yield with application of 312 kg/ha of 15-15- 15 together with 100 kg of urea and 78 of KCl/ha. In the Northeast the application of 25-25-25 kg/ha of N, P2Os and K2O produced a significantly higher yield of Kasetsart 50, Rayong 5, Rayong 60 and Rayong 90 than without fertilizer application. Research on the long-term effect of soil management on cassava planted continuously for 15 years in Khon Kaen in the Northeast, showed that when cassava was rotated yearly with sequentially planted peanut and pigeonpea, this could maintain a relative cassava yield of 87 % of that obtained in the first year. Similarly, the application of soil amendments (lime, rock phosphates and compost), as well as that of soil amendments with chemical fertilizers, could reduce the rate of yield decrease over time. However, after 15 years of continuous cropping the cassava yields in all treatments were lower than those obtained in the first year. Research on the optimum period of weed control for Rayong 60 and Rayong 90, planted in both the early and late rainy seasons in the Northeast, indicate that both cultivars need to be free of weeds at least three months after planting in order to produce high yields.
dc.formatapplication/pdf
dc.identifierhttps://hdl.handle.net/10568/80243
dc.identifier.urihttp://hdl.handle.net/123456789/82379
dc.languageen
dc.publisherInternational Center for Tropical Agriculture
dc.publisherRegional Cassava Program for Asia
dc.rightsOpen Access
dc.sourceTongglum, Anuchut; Pornpromprathan, V.; Paisarncharoen, K.; Wongviwatchai, C.; Sittibusaya, C.; Jantawat, Somjate; Nual-on, T.; Howeler, Reinhardt H.. 1998. Recent progress in cassava agronomy research in Thailand . In: Howeler, Reinhardt H. (ed.). Regional Workshop Cassava Breeding, Agronomy and Farmer Participatory Research in Asia (5, 1996, Hainan, China). Cassava breeding, agronomy and farmer participatory research in Asia: Proceedings . Centro Internacional de Agricultura Tropical (CIAT), Regional Cassava Program for Asia, Bangkok, TH. p. 211-234.
dc.subjectmanihot esculenta
dc.subjectresearch
dc.subjecterosion control
dc.subjectsoil fertility
dc.subjectweed control
dc.subjectplanting date
dc.subjectcrop yield
dc.subjectwater erosion
dc.subjectlive mulches
dc.subjectcropping systems
dc.subjectcultural methods
dc.subjectgreen manures
dc.subjectspacing
dc.subjectfertilizer application
dc.subjectinvestigación
dc.subjectcontrol de la erosión
dc.subjectfertilidad del suelo
dc.subjectcontrol de malezas
dc.subjectfecha de plantación
dc.subjectrendimiento de cultivos
dc.subjecterosión por el agua
dc.subjectcobertura verde
dc.subjectsistemas de cultivo
dc.subjectmétodos de cultivo
dc.subjectabonos verdes
dc.subjectespaciamiento
dc.subjectaplicación de abonos
dc.titleRecent progress in cassava agronomy research in Thailand
dc.typeConference Paper

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