A field experiment was conducted to determine the optimum level of potassium on sunflower growth and yield. The potassium level comprised 0, 25, 50, 75, 100 and 125 kg per hectare while the sunflower hybrids were NK-265 and SF-187. The results showed that potash levels significantly influenced the head diameter, number of achenes per head, seed yield and protein contents, while plant height, 1000-achene weight and oil contents examined unaffected, statistically. The highest seed yield of 2.235 tones per hectare was obtained by applying 75 kg K2O per hectare. For sunflower 75-100 kg K2O per hectare is the optimum level, beyond this level the application of potash is not profitable and hybrid SF-187 is better than NK-265 as it showed better performance.
Publisher:
Asian Network for Scientific Information (provided by DOAJ)
Journal description