Varietal improvement and agronomy research in Malaysia
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 been i...
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| Format: | Book Chapter |
| Language: | Inglés |
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International Center for Tropical Agriculture
1998
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| Online Access: | https://hdl.handle.net/10568/81977 |
| _version_ | 1855519032475648000 |
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| author | Tan, Swee Lian |
| author_browse | Tan, Swee Lian |
| author_facet | Tan, Swee Lian |
| author_sort | Tan, Swee Lian |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | 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 been identified as having yield levels similar to the high-yielding early cultivar MM 92, while showing dry matter contents equivalent to that of the commercial starch cultivar Black Twig. Two of these promising clones have also been evaluated positively for processing into oil fried crisps, a popular local snack.
Agronomic research included various studies on nutrient inputs and the effects of flooding on cassava performance when the crop is planted on drained peat. With the early cultivar MM 92, fertilizer inputs may be halved and applied once every alternate cropping without affecting root yields. While the effect of Ca application was not clear-cut, there was some indication that Ca applied as a 9 % foliar solution of Ca(NO3)2 or as 1 ,500 kg/ha of CaCO3 to the soil improved root dry matter content. Solid wastes from starch processing factories may be returned to the soil at the rate of 1.0-1.5 t/ha as a supplement to chemical fertilizer inputs. MM 92, in contrast to 12- month Black Twig (critical stage at 3 1/2 months), showed the greatest yield reduction when flooding occurred at 4-5 months after planting. Four days of continuous flooding resulted in yields declining as much as 45%. |
| format | Book Chapter |
| id | CGSpace81977 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 1998 |
| publishDateRange | 1998 |
| publishDateSort | 1998 |
| publisher | International Center for Tropical Agriculture |
| publisherStr | International Center for Tropical Agriculture |
| record_format | dspace |
| spelling | CGSpace819772025-11-05T16:56:06Z Varietal improvement and agronomy research in Malaysia Tan, Swee Lian manihot esculenta breeding high yielding varieties selection germplasm clones crop yield harvest index dry matter content fertilizer application fitomejoramiento variedades de alto rendimiento selección germoplasma rendimiento de cultivos indice de cosecha contenido de materia seca aplicación de abonos 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 been identified as having yield levels similar to the high-yielding early cultivar MM 92, while showing dry matter contents equivalent to that of the commercial starch cultivar Black Twig. Two of these promising clones have also been evaluated positively for processing into oil fried crisps, a popular local snack. Agronomic research included various studies on nutrient inputs and the effects of flooding on cassava performance when the crop is planted on drained peat. With the early cultivar MM 92, fertilizer inputs may be halved and applied once every alternate cropping without affecting root yields. While the effect of Ca application was not clear-cut, there was some indication that Ca applied as a 9 % foliar solution of Ca(NO3)2 or as 1 ,500 kg/ha of CaCO3 to the soil improved root dry matter content. Solid wastes from starch processing factories may be returned to the soil at the rate of 1.0-1.5 t/ha as a supplement to chemical fertilizer inputs. MM 92, in contrast to 12- month Black Twig (critical stage at 3 1/2 months), showed the greatest yield reduction when flooding occurred at 4-5 months after planting. Four days of continuous flooding resulted in yields declining as much as 45%. 1998 2017-06-20T09:00:16Z 2017-06-20T09:00:16Z Book Chapter https://hdl.handle.net/10568/81977 en Open Access application/pdf International Center for Tropical Agriculture Regional Cassava Program for Asia Tan, Swee Lian. 1998. Varietal improvement and agronomy research in Malaysia . 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. 340-354. |
| spellingShingle | manihot esculenta breeding high yielding varieties selection germplasm clones crop yield harvest index dry matter content fertilizer application fitomejoramiento variedades de alto rendimiento selección germoplasma rendimiento de cultivos indice de cosecha contenido de materia seca aplicación de abonos Tan, Swee Lian Varietal improvement and agronomy research in Malaysia |
| title | Varietal improvement and agronomy research in Malaysia |
| title_full | Varietal improvement and agronomy research in Malaysia |
| title_fullStr | Varietal improvement and agronomy research in Malaysia |
| title_full_unstemmed | Varietal improvement and agronomy research in Malaysia |
| title_short | Varietal improvement and agronomy research in Malaysia |
| title_sort | varietal improvement and agronomy research in malaysia |
| topic | manihot esculenta breeding high yielding varieties selection germplasm clones crop yield harvest index dry matter content fertilizer application fitomejoramiento variedades de alto rendimiento selección germoplasma rendimiento de cultivos indice de cosecha contenido de materia seca aplicación de abonos |
| url | https://hdl.handle.net/10568/81977 |
| work_keys_str_mv | AT tansweelian varietalimprovementandagronomyresearchinmalaysia |