Investigating the effect of foliar application with several types of organic fertilizers on yield and yield components of corn cultivars in Moghan plain

Gheirati Khiavi, Behzad (2020) Investigating the effect of foliar application with several types of organic fertilizers on yield and yield components of corn cultivars in Moghan plain. Masters thesis, University of Mohaghegh Ardabili.

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Abstract

Research Aim: In order to reduce the risks and consequences of excessive use of chemical fertilizers and the possibility of using and replacing various sources of organic fertilizers in corn crops, the aim of this experiment was to perform this experiment. Research method: This experiment was performed as a split plot based on the design of complete random blocks in three repetitions of implementation in 2019 on the farm of Faculty of Agriculture and Natural Resources of Mohaghegh Ardabili university. The first factor included two varieties of corn 704 and 706, and the second factor included fertilizer sources such as urea fertilizer, New Agro organic fertilizer, bio-gold (Zare) and humic acid. Various agricultural traits, yields and grain yield components were studied. Findings: The results of analysis of variance showed that the effect of cultivar on the exception of leaf greenery index (SPAD) and ear diameter on other traits was statistically insignificant. However, all traits, including plant height, stem diameter, number of leaves, number of seeds per ear, weight of one thousand seeds, grain yield and biological yield, were significantly affected by fertilizer resources. The interaction effect of fertilizer cultivars on the trait of ear diameter had a significant effect on the probability level of five percent. The highest plant height and the highest number of leaves, without significant statistical differences, belonged to urea fertilizer and organic fertilizer New agro 60. The 704 hybrid cultivar had the highest leaf greenness index (SPAD). Urea and New Agro 60 fertilizers, without significant statistical differences, caused the highest number of seeds in ear, but the highest weight of one thousand seeds belonged to Urea fertilizer. The application of urea and organic fertilizer NewAgro 60 caused the highest grain yield per unit area. Conclusion:In this experiment, the studied varieties did not show statistically significant differences in most traits. However, different fertilizer sources had significant differences in most of the studied traits. Among the fertilizer sources, the application of New Agro 60 organic fertilizer in most traits, without significant differences with urea fertilizer, was included in the common statistical group. The two sources of bio-zare and humic acid also showed similar performance in most of the studied traits. In general, in this experiment, the yield of corn grain with the use of New Agro organic fertilizer was almost equal to that of urea chemical fertilizer, so this fertilizer can be used as a suitable alternative or in combination with urea fertilizer in cultivating these cultivars.

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