Introduction to the Integrated Nutrient Management Strategies, and Contribution on Yield and Soil Properties

Abstract

Alleviation of poverty and achieving food security are a significant challenge facing planner worldwide. A way of improving agronomic practices, mainly which has drastic effect on crop growth and yield potential is necessary and acceptable. In this domain, fertilization management has high priority, due to the expensive fertilizers, recently became the costlier input in agriculture. So, rationalization the use of chemical fertilizers is considerable. Replacement a part of chemical fertilizers by organic manure through a simple technique of using minimum effective dose of sufficient and balanced quantities of organic and inorganic fertilizers in combination with specific microorganisms, called INM are a bright solution. Not only for improving and building up of soil fertility but also for increasing the efficiency of chemical fertilizers and make fertilizers more available and most effective for maintaining higher yield without exposing soil native nutrients, ensuring environment and underground water with minimum risks and guaranteeing high profitability. Accordingly, integrated use of chemical fertilizer with organic manure became the quite promising practice not only for maintaining higher productivity but also for greater stability to crop production. Also, (INM) acts as a source of energy for the growth of soil microbes, improvement physical properties of soil, organic carbon and available nitrogen. Additionally, due to their slow realize have great residual effect on subsequent crops. The potential role of INM has been well documented by several investigators, despite some researchers have that, the effects of organic manures are not always have positive contribution and some fields have poor response to organic manures. Such conflicting effect may be due to the presence of high levels of phytotoxins and high C/N ratio, particularly in immature manures. So, the key component of INM goal is reaching to most effective and homogeneous combination could get a good fertilization program and effective target of the fertilizers, sufficient, balanced use of their quantity and quality, and straightforwardly uptake by plants for higher yield without jeopardizing soil native nutrients or polluting the environment. Conclusion, INM is a tool, that can offer good options and economic choices to supply plants with sufficient amount of most macro and micronutrients, and also can reduce the dose of chemical fertilizer, create favorable soil physiochemical conditions, healthy environment, eliminate the constraints, safety soil nutrient balance in long run, to an optimum level for sustaining the desired crop productivity and finding safe methods to get rid of agriculture wastes.