Paper Details

The effect of drought stress and different levels of potash fertilizer on yield components of broad bean

Neda Sadeghi, Tayeb Saki Nejad, A. Imani

DOI: https://dx.doi.org/10.12692/ijb/4.2.98-103

Int. J. Biosci. 4(2), 98-103. January, 2014. (PDF)

Abstract:

In order to study the effect of drought stress and different levels of Potash Fertilizer on yield components and growth trend of broad bean a split plot experiment in randomized complete block design with four replications was carried out in Ahwaz weather conditions. Main factors of experiment included irrigation is (A1:  perfect irrigation regime all seven days  during the plant growth period, A2: 14-day irrigation interval, A3: 21-day irrigation interval) and the sub factor included three levels of potash fertilizer (B1: control, B2: 50kg potassium sulfate per hectare, B3:100kg potassium sulfate per hectare). Results showed that the use of potassium sulfate had a significant effect on the number of grains per plant, number of pods, grain yield, and biological yield of broad bean, but its effect on the harvest index was insignificant. The highest number of grains per plant and the highest number of pods were obtained in control irrigation level and use of 50kg potassium sulfate per hectare. The highest grain yield was obtained by the use of 100 kg potassium sulfate per hectare and control irrigation. The highest biological yield belonged to control irrigation and the use of 50kg and 100 kg potassium sulfate per hectare. The highest harvest index belonged to the control irrigation. Generally, it could be concluded that it is possible to harvest a remarkable yield by using 50kg potassium sulfate and seven-day irrigation interval with regard to regional and nutritional conditions of broad bean.