Effect of Vermicompost and Boron Fertilizer on Growth, Yield and Uptake of Nitrogen and Boron in Safflower (Carthamus tinctorious L.)
Article Type:
Research/Original Article (دارای رتبه معتبر)

To investigate the effect of different levels of vermicompost and boron on safflower grain and oil yield, a factorial experiment is conducted in a randomized complete block design with four replications in the 2016-17 crop year at the research farm of Agricultural Sciences and Natural Resources University of Khuzestan. Experimental factors include four levels of vermicompost (0, 4, 8, and 12 tons per hectare) and four boron levels (0, 3, 6, and 9 kg per hectare) from the source of boric acid (H3BO3) as soil application. The results show that the effect of vermicompost on most of the measured traits has been significant. Accordingly, biological yield and yield components including number of capitols per square meter, grain per capitol, and 1000-grain weight have increased significantly to the highest level of vermicompost consumption. The effect of boron on grain number per capitol, grain yield, biological yield, stigma yield, harvest index, oil yield, and grain protein percentage is significant. The interaction effect of vermicompost and boron on grain yield, harvest index, oil yield, grain protein percentage, and nitrogen uptake per unit aera is significant. Comparison of means show that the highest grain yield (3184 kg/ha) and the highest oil yield (939 kh/ha) are obtained in the treatment of 12 tons of vermiompost and 3 kg of boron per hectare. In both cases, grain and oil yield per unit area show a 100% increase, compared to the control treatment.

Journal of Crop Improvment, Volume:25 Issue: 2, 2023
369 to 385
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