عنوان مقاله [English]
In order to study the response of soil properties and sweet corn traits to different levels of organic and chemical fertilizers of nitrogen, a greenhouse-laboratory research was carried out as factorial based on a completely randomized design with three replications in Miyaneh Branch, Islamid Azad University. Experimental factors included poultry manure at three levels (0, 20 and 30 ton.ha-1) and nitrogen fertilizer at three levels (0, 100 and 200 kg.ha-1 from urea source). Results showed that application of poultry manure in soil increased soil pH, EC and organic carbon. Also, it had a significant effect on chlorophyll content, plant height and leaf area of sweet corn plants. Application of 20 and 30 ton.ha-1 poultry manure resulted in higher values of the studied traits. However, there was no significant differences between 20 and 30 ton.ha-1 poultry manure in most cases and so, application of 20 ton.ha-1 poultry manure was enough for achieving optimal sweet corn growth in greenhouse. According to the results, combined application of 20 ton.ha-1 poultry manure and 100 kg.ha-1 nitrogen from urea source could be recommended for optimum nitrogen supplying in sweet corn cropping system.
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