Use of Sweet Potato (<i>Ipomoea batatas</i>) Leaf Tips as Vegetables I. Evaluation of Morphological Traits

Villareal, R. L.; Lin, Shih-Wen; Chang, L.S.; Lai, S. H.

doi:10.1017/s001447970000048x

Cited by 10 publications

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“…Although the sweet potato is generally grown for its starchy tuberous roots, there are many people in Africa and Asia who eat the stems and leaves (Villareal et al, 1979a). The foliage, which is of good nutritional composition (Kay, 1973), is also used locally to feed stock.…”

Section: S U M M a R Ymentioning

confidence: 99%

“…There were fewer and smaller tubers as the frequency of shoot harvests increased. There were varietal differences in response to shoot removal For reasonable yields of both shoot tips and tuberous roots harvesting shoot tips at four week intervals is recommended.Although the sweet potato is generally grown for its starchy tuberous roots, there are many people in Africa and Asia who eat the stems and leaves (Villareal et al, 1979a). The foliage, which is of good nutritional composition (Kay, 1973), is also used locally to feed stock.…”

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confidence: 99%

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Effect of Shoot Removal on Shoot and Root Yields of Sweet Potato

1985

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S U M M A R YExperiments on harvesting sweet potato as a green vegetable and as a root crop are described. Whole shoots yielded 62% more than shoot tips. Similar total shoot yields were harvested whether tip removal was at two, three or four week intervals. Root yield was decreased by 31 to 48% by removing shoot tips, while removing whole shoots led to root yield decreases of 48 to 62%. Harvesting shoots at two week intervals gave 72% reduction in root yield, compared with 50% with four week intervals. There were fewer and smaller tubers as the frequency of shoot harvests increased. There were varietal differences in response to shoot removal For reasonable yields of both shoot tips and tuberous roots harvesting shoot tips at four week intervals is recommended.Although the sweet potato is generally grown for its starchy tuberous roots, there are many people in Africa and Asia who eat the stems and leaves (Villareal et al., 1979a). The foliage, which is of good nutritional composition (Kay, 1973), is also used locally to feed stock.The use of shoots as a vegetable or as forage necessitates some shoot removal while the plants are growing and might be expected to decrease the supply of photosynthate to the growing tubers. Villareal et al. (1979b) and Gonzales et al. (1977) reported that tuberous root yields were generally decreased by frequent harvesting of the tips.These experiments were therefore designed to investigate the effects of the method and frequency of de-topping on the yields of shoots and roots. METHODSTwo separate experiments were carried out, one in 1977 and one in 1978, at the International Institute of Tropical Agriculture (IITA), Ibadan, Nigeria. In 1977 two sweet potato varieties, TIS 2328 and TIS 2154, were subjected to three patterns of shoot removal. A factorial (3 X 2) design was used, with the treatments arranged in four randomized complete blocks. The patterns of shoot removal were: (i) no removal; (ii) shoot tips removed when about 25 cm long and (iii) most of the shoots removed to within 10 cm from ground level. Each

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Section: S U M M a R Ymentioning

confidence: 99%

mentioning

confidence: 99%