Abstract
As a key component of agricultural sustainability, organic fertilizer contributes greatly to improving soil fertility. Therefore, the objective of this review is to revise the role of organic fertilizer on agricultural product and productivity. The newly sourced artificial fertilizer had a short-term benefit, but it had severe long-term side effect such as soil toxicity and decline soil fertility. Afterward, the idea of organic farming was acceptable to developed organic agriculture system. The use of organic fertilizers has advantage of being cheap, improving soil structure, texture and aeration increasing the soils water retention abilities and stimulating healthy root development. Organic fertilizer has many sources such as minerals, animal source, sewage sludge and plant. Vegetables, animals and residue materials had a contribution to improve soil organic matter content in soil. Therefor it is recommended that, using integrated nutrient management is a continuous improvement of soil productivity on longer term basis through appropriate use of organic fertilizers (i.e. animal manure, plants residue and sewage sludge) and their scientific management for increments of optimum growth, yield and quality of different crops.
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52 articles.
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