Nitrogen Economy in Tropical Soils

Table of Contents

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   Book Overview
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   Chapter 1 Forms and nature of organic N in soil
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   Chapter 2 Seasonal fluctuations of native available N and soil management implications
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   Chapter 3 Effect of cultivation on the nitrogen fertility of selected agro-ecosystems in South Africa
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   Chapter 4 Assessment of biological nitrogen fixation
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   Chapter 5 High productivity analysis of 15 N and 13 C in soil/plant research
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   Chapter 6 Adapting the potentially mineralizable N concept for the prediction of fertilizer N requirements
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   Chapter 7 Field application of the 15 N isotope dilution technique for the reliable quantification of plant-associated biological nitrogen fixation
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   Chapter 8 Rational nitrogen fertilization in intensive cropping systems
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    Chapter 9 Nitrogen assimilation by legumes — processes and ecological limitations
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    Chapter 10 Fate of CO(NH 2 ) 2 - 15 N applied to taro ( Colocasia esculenta var. esculenta ) in an acid Vertisol of Trinidad
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    Chapter 11 Brown leaf spot disease and fertilizer interaction in irrigated rice growing on different soil types
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    Chapter 12 Use of 15 N for fertilizer N recovery and N mineralization studies in semi-arid Kenya
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    Chapter 13 Significance of timing and method of N fertilizer application for the N-use efficiency in flooded tropical rice
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    Chapter 14 A conceptual assessment of the importance of denitrification as a source of soil nitrogen loss in tropical agro-ecosystems
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    Chapter 15 Soil, plant and atmospheric conditions as they relate to ammonia volatilization
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    Chapter 16 Nitrous oxide (N 2 O) emissions from soils in warm climates
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    Chapter 17 The role of Azolla in curbing ammonia volatilization from flooded rice systems
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    Chapter 18 Downward movement of nitrate and ammonium nitrogen in a flatland ultisol
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    Chapter 19 15 N isotope dilution techniques to study soil nitrogen transformations and plant uptake
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    Chapter 20 Nitrogen transformations in wetland rice ecosystems
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    Chapter 21 Urea-N uptake by dasheen (Colocasia esculenta L. Schott) in relation to the fertilizer placement method
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    Chapter 22 Nitrogen fixation by trees in relation to soil nitrogen economy
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    Chapter 23 Extension of symbiotic biological nitrogen fixation technology in developing countries
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    Chapter 24 Nitrogen fixation associated with grasses and cereals: Recent progress and perspectives for the future
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    Chapter 25 Recent developments on the use of urease inhibitors in the tropics
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    Chapter 26 Biological N 2 -fixation and its management in wetland rice cultivation
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    Chapter 27 Managing nitrogen for sustainable crop production
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    Chapter 28 Searching for criteria for the selection of efficient tree species for fallow improvement, with special reference to carbon and nitrogen
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    Chapter 29 Nitrogen balance and root behavior in four pigeonpea-based intercropping systems
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    Chapter 30 Recent research on problems in the use of urea as a nitrogen fertilizer
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    Chapter 31 Nitrate contamination of groundwater: Measurement and prediction
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    Chapter 32 Alternatives for nitrogen nutrition of crops in tropical agriculture
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    Chapter 33 Behaviour of urea and ammonium sulfate fertilizers and their N uptake relationships in calcareous soils
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    Chapter 34 Simple field testing sites to determine the extent of nitrogen leaching from agricultural areas
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    Chapter 35 Comparison of legumes and fertilizer nitrogen for wheat production in subtropical Australia
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    Chapter 36 Long-term N-fertilization calibration experiments — environmental aspects
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    Chapter 37 Nitrification inhibitors, with emphasis on natural products, and the persistence of fertilizer nitrogen in the soil
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    Chapter 38 Land use related nitrogen and global change
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    Chapter 39 Response of sugarcane to nitrogen fertilization practices on some sugarcane soils in Trinidad
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    Chapter 40 FAO/IAEA International networking in soil/plant nitrogen research
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    Chapter 41 Nitrogen losses by leaching and runoff: methods and conclusions
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    Chapter 42 Optimizing non-symbiotic nitrogen fixation in an acid Vertisol