The effects of drought stress and foliar application micronutrients on growth yield and nutritional elements of black cumin ( Nigella sativa L. )
Subject Areas : crop production
علی اکبر عاملی
1
(مرکز تحقیقات کشاورزی و منابع طبیعی خراسان شمال)
Keywords: black cumin ( Nigella sativa L. ), micronutrient , irrigation intervals , seed yield,
Abstract :
In order to survey the effects of irrigation and foliar application of micronutrients on vegetative growth, yield and yield components black cumin ( Nigella sativa L. ), an experimental design was conducted in the research farm of North Khorasan agricultural and natural resources research center in Bojnourd in 2009. Experimental design was split plot based on randomized complete block design with three replications. The main factors were irrigation intervals in three levels ( I1=7, I2= 14, I3=21 days ) and subfactors were foliar application micronutrients included M1 = control ( no foliar application ), M2= foliar application with the zinc ( concentration of three parts per thousand ), M3 = foliar application with the Boron ( concentration of two parts per thousand ), M4 = foliar application with the iron ( concentration of four parts per thousand ), and M5 foliar application with the mixture of above elements. Experiment results showed that the impact of irrigation intervals on plant height, branch number, number of capsules per plant, biological yield and seed number per plant , seeds per capsule, seed weight, harvest index percentage, and seed yield, was significant and decreased with increasing irrigation intervals. The effects of foliar application of micronutrients on plant height, branch number, number of capsules per plant, biological yield, and Fe, Zn, and Br concentration in plant organs was significant. Foliar application of micronutrients caused plant height, branch number, number of capsules per plant, biological yield and Fe, Zn, and Br concentration in plant to be increased. Foliar application of micronutrient and irrigation interaction on plant height and biological yield were noticeable. Seven days irrigation intervals and foliar application, the mixture of micronutrient treatment caused the highest plant height, biological yield and Fe, Zn, and Br concentration in plant organs.
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