|Book Group Author:||NA|
Haricot bean (Phaseolus vulgaris L.) was grown on sandy loam soil to evaluate the effects of water quantity applied by furrow irrigation scheduled by pan evaporation in a 2-year study. Water was applied to haricot bean at 0.25, 0.50, 0.75 and 1.00 times pan evaporation in one application per seven days. Time to flowering and maturity and plant height were not significantly affected by the four irrigation treatments. The application of 0.25 pan delayed the time to flowering by four to seven days compared with 0.75 pan. The time to maturity was also shortened by eight days with 0.25 pan. The least plant height was observed with 0.25 pan and the highest with 0.50 pan followed by 0.75 pan. Pod number per plant increased by 28% and 48% due to 0.75 and 1.00 pan respectively compared with the 0.25 pan treatment. The effects of water quantity on the average number of seeds per pod was not significant (p>0.05). Seed yield was highest with irrigation quantities 0.75 pan followed by 1.00 pan and significantly lower with 0.25 and 0.50 pan. The highest WUE was calculated for 0.25 pan followed consecutively by the rest of the treatments. The irrigation application efficiencies of the 0.50, 0.75, and 1.00 pan were 89, 59, and 45% respectively. The estimated ETcrop of both seasons were more than the water applied at the 0.25 pan application rendering the crop to stressed condition. For the farmer there lies a decision to make between the 0.50 and 0.75 pan treatments regarding increased yields of the crop on the one hand and irrigation efficiency on the other.
|Pages:||135 - 139|
|Journal:||Landnutzung und Landentwicklung|
crop yield, evaporation, flowering, furrow irrigation,irrigation scheduling, pans, plant height, plant water relations, sandyloam soils, soil types, water use efficiency, yield components,Ethiopia, Phaseolus vulgaris, Phaseolus, Papilionoideae, Fabaceae,Fabales, dicotyledons, angiosperms, Spermatophyta, plants, eukaryotes,East Africa, Africa South of Sahara, Africa, Least Developed Countries,Developing Countries, ACP Countries, Abyssinia, anthesis, green bean,snap bean, Field Crops (FF005) (New March 2000), Plant Physiology andBiochemistry (FF060), Plant Water Relations (FF062), Plant Production(FF100), Soil Water Management (Irrigation and Drainage) (JJ800)(Revised June 2002) [formerly Soil Water Management]