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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. -
DocumentPopulus deltoides windbreak: its robust status in wheat production and soil nutrients in Indo-gangetic plains of northern India
XV World Forestry Congress, 2-6 May 2022
2022Also available in:
No results found.Agroforestry systems (AFS) with fast-growing woody crops such as poplar (Populus deltoides) are increasingly integrated into agricultural land because it is considered as a sustainable agricultural practice that combines primary production with other ecosystem services (ES). To optimize the efficiency of AFS, the suggestion is to develop well modified tree-crop integration by limiting competition for resources and capitalize on the coactions. However, yield data of various wheat varieties in AFS are inadequate, in particular for Populus deltoides windbreak at a age of four and five year old plantation. Here we focused on winter wheat varieties (WH-1105, HD-2967 and HD-943) during two consecutive years (2017-2019) comprising delimited by a row of deciduous poplar trees in East-West and North-South directions (East-West tree line divide farmlands into two aspects i.e. Northern and Southern and North-South tree line divide into Eastern and western aspect). While effects on crop produce were limited for all wheat varieties with the increasing distance from tree line, however, five years old poplar planted on field bunds exhibited significant reduction up to 3 m in grain yield of wheat from tree line for all the wheat varieties. The highest available soil N (210.5 kg ha–1), P (15.3 kg ha–1) and K (280.2 kg ha–1) were recorded near tree line at a distance of 3 m. To optimize the provisioning service of poplar windbreak AFS, the cultivation of highly shade tolerant wheat variety HD-2967 may be advisable over other wheat varieties towards the end of the rotation of poplar windbreak AFS. Keywords: Adaptive and integrated management, Food systems, Agriculture, Climate change, Human health and well-being ID: 3486118
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