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Published:
Feb 19, 2013Keywords:
Actual Water Availability Crop’s Water Consumption Moisture indices agroclimatic
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An Assessment of Rain Water Supply on Yam Production in Southwestern Nigeria
Abstract
The water supply of South-western Nigeria for the cultivation of yam (Dioscorea rotundata) was investigated. Six phenological stages of the crop formed the basic unit for the investigation. The experiment comprises of three varieties of yam (Efuru, Ise-osi and Oniyere) and two planting season (early and late).Selected moisture indices were measured daily and processed into ten-day (dekad) average for the 2007 and 2008 cropping seasons following FAO (1977). Descriptive statistics was employed for the analysis. Relating the effective water availability to the indices of moisture adequacy for the growth of the crop, it was found that the agro-climatic moisture indices were optimum during the moisture sensitive stages particularly for early season planting. A comparison of yam production in the study area showed that early planting promotes the growth, development and yield. This confirmed the water supply efficiency of rain-fed agriculture in South-western Nigeria for yam production.
Key words: Actual Water Availability, Crop’s Water Consumption, Moisture indices, agroclimatic
Key words: Actual Water Availability, Crop’s Water Consumption, Moisture indices, agroclimatic
