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BookletCountry guidelines and technical specifications for global soil nutrient and nutrient budget maps
GSNmap: Phase 1
2022Also available in:
No results found.The "Country Guidelines provides guidance and technical specifications for the first phase of the GSNmap initiative which aims to generate national maps of soil nutrients and associated soil properties at 250 m resolution for agricultural lands based on a country–driven approach. On the one hand, soil nutrient maps will provide a baseline for identifying areas where their levels are critical for crop growth and will thus serve as an important decision–making tool. On the other hand, associated soil parameters such as organic carbon, pH, soil texture, bulk density, and cation exchange capacity will be mapped, which can highlight the key limits to nutrient availability. In order to obtain consistent results and to allow comparisons between countries and regions, we propose a standard methodology based on digital soil mapping techniques. General modelling procedures, data requirements and data sources are described. The final product specifications and data submission formats are also provided. The final product will be relevant to identify the level of nutrients and associated soil properties per regions, environments and agricultural systems, and to establish priorities for the implementation of global and national public and private policies. -
Book (stand-alone)Improved use of Plant Nutrients. Report of the Expert Consultation on Better Exploitation of Plant Nutrients, Rome, 18-22 April 1977
FAO Soils Bulletin 37
1978Also available in:
No results found.FAO organized an Expert Consultation in April 1977 with participants from countries consuming both a high and low quantity of fertilizer, to identify possibilities for a more intensive and rational utilization of the valuable plant nutrients in mineral and organic fertilizers, with emphasis on conditions in developing countries. The conclusions reached should serve interested countries as a guide for follow-up activities in the more rational use of plant nutrients at the research and practical l evel. The participants were convinced that there are still ample possibilities for improvement and for making the costly and sometimes scarce plant nutrients more efficient and their use more economic. -
Book (stand-alone)Guide to laboratory establishment for plant nutrient analysis 2008
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No results found.Integrated nutrient management is a well-accepted approach for the sustainable management of soil productivity and increased crop production. It utilizes well-equipped testing laboratories. These need information on a widely acceptable methodology that can ensure reasonable accuracy, speed and reproducibility of results. The method has to be readily comprehensible to those who need to apply it in a routine manner. This publication provides practical guidelines on establishing composite servi ce laboratories; information on the basics of an analytical laboratory; simple methods for estimating soil and plant constituents for assessing soil fertility and making nutrient recommendations; standard methods for estimating the parameters and constituents of irrigation water for assessing the quality; methods for analysing mineral fertilizers to judge their quality; methods for the isolation, identification, multiplication and commercial production of agriculturally useful microbial inocula nts; and details of the equipment, chemicals and glassware required for a given analytical capacity.
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