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Characteristics of High Yielding Cassava Varieties

Published online by Cambridge University Press:  03 October 2008

James H. Cock
James H. Cock
Affiliation:
Centro Internacional de Agricultura Tropical Apartado aéreo 6713, Cali-Colombia
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Summary

Forty different cultivars of cassava were grown in unreplicated plots at a plant population of 20,000 plants/ha in fertile soil. Harvests were taken at 4, 6, 8, 10 and 12 months after planting 18 varieties. The characteristics of the two highest yielding varieties, M Colombia 113 (66 t/ha) and M Colombia 22 (32 t/ha), were compared with the other types. M Colombia 22 is an early type (25 t/ha after 6 months) with a very high harvest index; M Colombia 113 yields little better than average 6 months after planting. High yield is associated with a balance between leaf production and root production, so that leaf area index does not decline excessively in the later growth stages. Changing canopy structure is unlikely to increase yields.

Type
Research Article
Information
Experimental Agriculture , Volume 12 , Issue 2 , April 1976 , pp. 135 - 143
Copyright
Copyright © Cambridge University Press 1976

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