Hostname: page-component-cd9895bd7-gbm5v Total loading time: 0 Render date: 2024-12-23T14:04:07.954Z Has data issue: false hasContentIssue false
  • English
  • Français

Effect of varying the time of the first harvest, and of late planting, on double-harvest yield of yam (Dioscorea rotundata) in field plots

Published online by Cambridge University Press:  27 March 2009

I. C. Onwueme
I. C. Onwueme
Affiliation:
Plant Science Department, University of Ife, Ile-Ife, Nigeria
Get access Rights & Permissions [Opens in a new window]

Summary

Setts of white yam (cv. Ogojo) each weighing 225 g were planted in mid·February. They were double-harvested, first in early August, early September or early October, and second in early November. The control was single-harvested in early November. The later the time of the first harvest, the greater the first-harvest yield and the higher the percentage of mature and marketable tubers. Delaying the first harvest, however, led to decreasing yields from the second harvest. Double harvesting never gave a significantly higher yield than that obtained from a single harvest. When the first harvest was taken in September, the combined yield from double harvesting was significantly lower than that of the single November harvest. In a study of the effect of sowing date on yield, late planting (April) resulted in lower first harvest and total yields than early (February) planting, but the second-harvest yield was the same. Supplementary watering of early yam plantings did not markedly accelerate emergence or increase yield.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 88 , Issue 3 , June 1977 , pp. 737 - 741
Copyright
Copyright © Cambridge University Press 1977

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Chinwuba, P. M. (1971). Review of yam production in Nigeria during the last ten years. Root and Tuber Crops in West Africa: Seminar, Ibadan, Nigeria, 1971.Google Scholar
Lal, R. & Hahn, S. K. (1973). Effect of method of seed bed preparation, mulching, and time of planting on yam (Dioscorea rotundata) in Western Nigeria. 3rd International Symposium on Tropical Root Crops, Ibadan, Nigeria, 1973.Google Scholar
Onwueme, I. C. (1976). Performance of yam (Dioscorea spp.) setts planted without water. Journal of Agricultural Science, Cambridge 87, 413—15.CrossRefGoogle Scholar
Onwueme, I. C. (1977). Field comparison of West African planting and harvesting practices in yam (Dioscorea rotundata): pre-sprouting, dry season planting, and double-harvesting. Journal of Agricultural Science, Cambridge 88, 311—18.CrossRefGoogle Scholar