The Effects of Varying Nitrogen 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 nitrogen doses (0, 20, 40, 60 and 80 kg ha -1) on the 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 Yil University. In the study, plant height (cm), the number of branch (branch plant -1), the number of capsule (capsule plant -1), the number of seeds in the capsule (seed capsule -1), thousand-seed weight (g) and seed yield (kg ha -1) were determined. In conclusion, the effects of nitrogen doses on the yield and some yield components were statistically significant except for thousand-seed weight and the number of seeds in the capsule. Plant height, the number of branch, the number of capsule and seed yield increased by increasing nitrogen doses. According to the results, the highest values were obtained in seed yield (575 kg ha -1), the number of capsule (7.5 capsule plant -1) and the number of branch (4.51 branch plant -1) from 60 kg N ha -1 application.