Titlebook: Micronutrients in Tropical Food Crop Production; Paul L. G. Vlek Book 1985 Martinus Nijhoff/Dr W. Junk Publishers, Dordrecht 1985 Fertiliz

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Micronutrient soil testing for the tropics,. Soil testing for micronutrients is particularly difficult because plant requirements for these elements are relatively low and even slight contamination of a sample or modification of a procedure may seriously affect soil test results.

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The chemistry of micronutrients in soil,de boron (B), manganese (Mn), iron (Fe), copper (Cu), Zinc (Zn), molybdenum (Mo), and chlorine (Cl). This text will be limited to B, Mn, Fe, Cu, Zn, and Mo since natural deficiencies of Cl are essentially nonexistent.

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Micronutrients and the agroecology of tropical and Mediterranean regions,nd climate. Some progress has been made in understanding the effects of several individual factors on the availability of micronutrients; however, the possibility of identifying areas of potential micronutrient problems on the basis of existing information on soils and climate is still remote. Such

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Micronutrient fertilizers and fertilization practices,reased their use in many regions. Higher crop yields, usually resulting from higher rates of NPK fertilizers, also may have increased needs for micro-nutrients. In addition, the dramatic shift in the tropics to higher analysis fertilizers such as urea, triple superphosphate, and diammonium phosphate