tailieunhanh - Role of mineral nutrition on root growth of crop plants – A review

Agriculture is going through a profound revolution worldwide due to increasing world demand for food, higher costs of energy and other inputs, environmental pollution problems, and instability of cropping systems. The importance of plant functioning can be realized from the facts that knowledge of mineral nutrition of plants has opened new vistas for fertilizer practices. The detection of deficiencies and toxicity of particular mineral nutrient element has enabled us to make adequate soil amendments and root nutrient absorption for better plant growth. Physiological disorders of many crops such as rice, pulses and oil seeds have been successfully corrected by using minerals. Analysis of plant reveals the presence of a large number of mineral elements. In plant analysis, different mineral nutrient elements are determined even in micro quantities. The estimations are done according to needs either in extracts of fresh plant tissue or by digesting it with nitric acid and perchloric acid. Although plant analysis may be thought of as a method of determining the relative quantities of mineral elements in plants it is at least a crude technique. At present 17 chemical elements such as N, P, K, Ca, Mg, S, B, Cl, Cu, Fe, Mn, Mo, and Zn along with C, H, O are considered as essential elements and each of these essential elements performs one or more specific internal roles in plants. | Role of mineral nutrition on root growth of crop plants A review