Comparison of effect of organic and chemical fertilizers addition on soil properties
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piled organic fertilizer, chemical fertilizer, compost, soil properties, residue.
Abstract
In this study we test the effect of adding three types of fertilization to soil, these types are , piled organic fertilizer (compost, a mixture of piled organic fertilizer (compost) and chemical fertilizer by 1 : 1 and chemical fertilizer on soil properties plus a sample for comparison (non-fertilized soil), preparation of compost is by prepare a mixture composed of barley hay, alfalfa and poultry residue ratio of 1:1:2 respectively and pile it for a time duration of 21 days before using it. This compost is laboratory analyzed after maturity to determine the content of major nutrients (NPK), the results showed that the concentrations of these elements are N 504 ppm , P 23.73 ppm , K 426 ppm , experiment was conducted in a field in Qaser Khyar area 3 km south of downtown in the 2016 winter season to compare the effect of adding piled organic fertilizer (compost) and chemical fertilizer on some soil properties. The study included using of three levels of fertilization for each type of fertilizer i.e. low , intermediate and high levels and mixing them with the soil in the experimental plots. The results showed that all levels of compost and particularly high level (C3) increase the efficiency of water-holding capacity of the soil , reduce salinity and alkalinity , increase its NPK residue , facilitate phosphorus and potassium for plant and enrich soil with organic matter.
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