Efficient Use of Fertilizers

Efficient Use of Fertilizers
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Efficient Use of Fertilizers

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Publisher: Agrotech Publications
ISBN: 9788185680194
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Availability: In Stock
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PREFACE
Fertilizers have played, and will continue to play a notable role in the agricultural development of India. Through the use of fertilizers in crop production, it is possible to obtain not only high yields but also to achieve efficient utilization of all other nutrients, protect in vestments in the production inputs and maximize the returns from fertilizer use. For proper growth, arable plants require nutrients, water, -sunlight and optimum atmospheric and soil environment. Nutrients and water are taken by the plants from the soil via their root system. While water requirement of crops is governed by environmental conditions and extent of canopy, the nutrient removal depends upon their biomass production. Within the genetic potential of a crop, its yield is limited by the availability of that component of production which is in the shortest supply with respect to the crop requirement. Hence the soil nutrient and water reservoir - plant atmosphere system may be viewed as a chain for crop production , the strength of which is determined by the weakest link. Water plays the role of conveyer belt for transporting the nutrients from one place to another within the plant. It also regulates the ef ficiency of the whole system by controlling the plant water system and the development of root system-the month organ of plants, for the intake of water and nutrients. Genetic potential of the plant determines the upper production limit of plant s capacity when the solar radiation, water, nutrients and ambient environment are non limiting for its growth and development. Most stressed areas are
-----------------------------------------------------------------------------------------------------------------operating at a level much below the genetic potential of crop plants which offers excellent scope for increasing crop productivity m these vast areas. Water is not only essential for plants metabolic and physiological functions, but it also facilitates the nutrient availability and uptake. From plant nutrition point of view, sixteen elements are known to be essential for plant growth. Deficiency of any one of these nutrients make it impossible for plant to complete its life processes. Plant growth and hence crop yields are determined by the amount of limit ing nutrient element's and are proportional to its supplies. For increasing the production, it is imperative to enhance the availability of the most limiting factor s under a given situation. If in that process the amount or size of that component increases to a level where another component become limiting, the supply of limiting factor must also be pushed up to reach the new achievable level. Balanced fertilizer use is the backbone of efficient fertilizer use. The fertilizer recommendations are meant to provide practical guidelines on amounts needed and methods of application for a given cropping situation. By their adoption, farmers can ensure that nutrient deficiencies do not prevent them from realizing high yields and profits. At the same time, it should be appreciated that as more research information becomes available or as new crops and varieties are grown, fertilizer recommendations must change. It is