Selecao de cultivares de mandioca para adaptacao ao agroecossistema e potencial de rendimento
Efforts of the Empresa Catarinense de Pesquisa Agropecuaria to select cassava cv. adapted to the 3 main ecosystems of the state (south, upper Vale do Itajai, and west) are indicated. The selection process involves (1) introduction and preliminary selection (resistance to bacterioses); (2) advanced trials or adaption to the ecosystem (resistance to bacterioses, anthracnose, and pests as well as root and starch productivity, the latter of min. 26 percent); (3) regional trials (root and aerial part productivity, starch and flour production, disease resistance); (4) cv. release; and (5) multiplication of cuttings. Yield potential of cv. was found to be closely related to soil and climatic conditions; in trials carried out at 4 sites, root yields of cv. Mico and Aipim Gigante in western Santa Catarina were 36 percent higher than those obtained by the same cv. in upper Vale do Itajai. Double-cycle crops in sandy soil yielded twice as much as single- cycle crops; yields on clayey soils were almost the same for both double- and single-cycle crops. (CIAT)
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| Format: | Book Chapter biblioteca |
| Language: | Portuguese |
| Published: |
International Center for Tropical Agriculture
1991
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| Subjects: | manihot esculenta, cultivars, selection, adaptation, root productivity, agroecological zonation, production, productivity, starch crops, variedades, selección, adaptación, productividad de raices, zonificacion agroecologica, producción, |
| Online Access: | https://hdl.handle.net/10568/82093 http://ciat-library.ciat.cgiar.org/Articulos_Ciat/Digital/SB123.E9C.2_An_exchange_of_experiences_from_South_and_South_East_Asia.pdf#page=227 |
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