Yield Responses of Three Groundnut (Arachis hypogaea L.) Cultivars to Water Stress at Different Growth Stages *

Abstract

This study was conducted to investigate the effect of water
stress on the yield of three groundnut cultivars (Kiriz, MH383 and Sodari)
for two successive seasons (in the summers of 1996/97 and 1997/98) in
the Demonstration Farm of the Faculty of Agriculture, Shambat, Sudan.
The experiment was executed in a split-plot design, where water stress
(irrigation every 21 days) was applied at 50% flowering, at pegging and at
pod filling stage. A non-stressed treatment (irrigated every ten days) was
used as a control. The stress period was for three weeks for each of the
three stages of growth. Yield components (number of pods/plant, weight
of 100 seeds, number of seeds per pod and weight of 100 pods) were not
affected by the stress treatments. Shelling percentage was greatly different
among the cultivars