Abstract

Poor soil fertility, moisture stress, and shortage of early maturing varieties are the major groundnut production constraints in the study area. This study was executed to evaluate the effect of Diammonium phosphate (DAP) and gypsum application, tied ridging and supplementary irrigation on groundnut production. The experiment was laid out in a Randomized Complete Block Design with three replications in two sites. DAP as a source of phosphorous and gypsum as source of calcium were applied at planting and pod setting stages, respectively. While tied ridging and supplementary irrigation were applied at early flowering and during cessation of rainfall, respectively. Phenological, yield, and yield components data were recorded. Analysis of variance indicated that the integrated agronomic management options showed a significant positive effect on plant height, pods per plant, dry biomass weight, dry pod weight, kernel seed yield and 100-seed weight of groundnut at both experimental sites. Between both experimental sites, the highest kernel yield (980 kg/ha) was recorded when supplementary irrigation + tied ridge + fertilizer were practiced while the lowest yield (290 kg/ha) was recorded in the control.

Key words:  Agronomic practices, yield and yield components, moisture stress, groundnut.