Document Type : Research Paper
Authors
Department of Agronomy, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran
Abstract
Objective: Excessive use of chemical fertilizers leads to problems regarding health of humans and other creatures. In this framework, this experiment was designed.
Methods: The experiment was based on factorial in the form of a randomized complete block design in three replications. The investigated factors included no foliar application of amino acid, 1, 2 and 3 kg/ha and urea fertilizer consumption in 3 levels as 100, 66 and 33% compared to the regional customs.
Results: The results showed that the maximum plant height, leaf area index, total dry matter, crop growth rate, net photosynthesis rate, chlorophyll index and grain yield was under 100% urea fertilizer application and 3 kg/ha of amino acid and the minimum belonged 33% of urea and no foliar application of amino acid and the differences between them was significant. The maximum total dry matter and grain yield were observed under simultaneous application of 100% urea and 3 kg/ha amino acid, and the minimum was obtained under no foliar application of amino acid and 33% urea, which did not have a significant difference with 66% urea and the application of 3 kg/ha amino acid. Increasing grain yield, under 100% urea and 3 kg/ha amino acid compared to no foliar application of amino acid and 100% urea fertilizer (control) was equal to 76.8%.
Conclusion: In general, with the application of 66% urea fertilizer along with 3 kg/ha of amino acids, in addition to saving consumption of chemical fertilizers, it is possible to achieve a good yield in wheat.
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