Effect of phosphorus،boron and amino acids application on some vegetative and productive properties of cowpea Vigna unguiculata L.

Abstract

The study was conducted at the horticulture and forestry department / Al-Najaf agriculture directorate during spring and autumn growing seasonss of 2017. It aimed to study the effect of phosphorus،boron and amino acids application on growth and yield of cowpea. The first treatment was four foliar application of total amino acids including (0,2,4 and 6) ml.liter-1. The second treatment was three soil application of phosphorus and boron 160 kg P2O5.hectare, and 2 gm.liter-1 respectively, in addition to phosphorus +boron with the same application level. The control treatment was set for comparison. The experiment design was a factorial experiment using RCBD with three replications. Duncan's multiples range test was used to compare means with probability of level 0.05.