The Effects of Varying Phosphorus Doses on Yield and Some Yield Components of Black Cumin (Nigella Sativa L.)

Abstract

This study was carried out to determine the effects of different phosphorus doses (0, 20 and 40 kg/ha) on yield and some yield components of black cumin (Nigella sativa L.) in Van ecological conditions in 2006 and 2007. Field trials were designed by Completely Randomized Block Design with three replications at the experimental fields of Agricultural Faculty of Yuzuncu Yi{dotless}l University. In the study, plant height (cm), the number of branch (branch/plant), the number of capsule (capsule/plant), the number of seeds in the capsule (seed/capsule), thousand-seed weight (g) and seed yield (kg/ha) were determined. According to statistical analysis, significant differences were determined among the phosphorus doses applications for the number of capsule, thousand-seed weight and seed yield. Seed yield increased by increasing phosphorus doses. According to the results, the highest seed yield (597 kg/ha) and thousand-seed weight (2.48 g) were obtained from 40 kg P/ha fertilizer application. The highest mean values for the number of capsule (5.68 capsule/plant) resulted in 20 kg P/ha application.