Complementary Studies to Accessing the Most Suitable, Economic and Practical Methods for Prevention and Combat to Micronutrient Deficiency
2009
Moshiri, Farhad | Keshavarz Moslman Shirazi, Hadi | Khogar, Zahra | Foroohar, Majid | Niromand Hossieni, Negar | Aminpour, Javad | Zareh, Nader | Nasroollahi, Khandan | Eslami, Mahmoud
Micronutrient deficiency in wheat observed in Iran because of the dry and semi-dry condition and calcareous soils. Micronutrient fertilization is one of the most effective strategies for overcoming micronutrient deficiency problem. The right fertilizer application method is a key factor in micronutrient fertilizer efficiency. This study conducted in Tehran (Karaj research station), Fars (Zarghan research station) and Khorasan-e-Razavi (Torogh research station) to introduce the best method for applying zinc and iron (Zn + Fe) fertilizer. Wheat cultivated in field experimental plots arranged in completely randomized block design with seven treatments (control, soil applied, spraying, seed treatment, soil applied + spraying, spaying + seed treatment and seed inoculation with Azetobacter) and three replications. Wheat yield and micronutrient concentration in grain was determined. Results showed that grain yield increased with Zn + Fe application by 18.7, 17.7 and 18.4% in Karaj, Zarghan and Torogh station, respectively. Straw yield and harvest index was markedly affected by Zn + Fe application. The methods of Zn + Fe application had different effect on wheat production. More yields were observed by soil applied + spraying. By this method of application grain yield increased by 26.2% (941 Kg ha-1) in Karaj station and 25.4% (1474 kg ha-1) in Zarghan station. The most significant grain yield in Torogh station was obtained by spring Zn + Fe. Zn and Fe concentration in grain was not significantly affected by Zn + Fe application, however, the Zn and Fe in grain increased. Grain yield somewhat increased by Azetobacter inoculation in Karaj, Zarghan and Torogh by 10.0, 14.8 and 39.8%, Respectively.
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