Agronomic and Tolerant Performance of Acid Soil-Tolerant Wild Soybean (Glycine soja Sieb. and Zucc.) in Acid Sulfate Soil of Thailand

We screened acid soil-tolerant wild soybean (Glycine soja Sieb. and Zucc.) accessions and evaluated their agronomic and tolerant performance under acid sulfate soil (ASS) conditions. Only three accessions, J-13, J-19 and J-55, among 381 G. soja accessions obtained from G. soja Germplasm Collection of Japan, were identified as having strong tolerance by the acid soil toxicity score (ATS) at soil pH 3.3. These three tolerant G. soja accessions showed significantly lower aluminum (Al), iron (Fe) and manganese (Mn) contents in the aboveground part than the intolerant ones in 0.25 lime requirement (LR) conditions (pH 3.8). Aboveground dry matter weights (DW) and seed yields of three tolerant G. soja accessions, except seed yield of a tolerant accession J-55, were also significantly higher than intolerant ones under the 0.25 LR condition. This clearly indicates that lower contents of toxic mineral in the ASS-tolerant G. soja led to higher macro-nutrient uptake, DW, and seed yields. We conclude that the three tolerant G. soja accessions identified in the present study possess high levels of tolerance to the soil acidity and Al-excess soil conditions, and could be valuable genetic resources for soybean improvement programs

Status of the World’s Soil Resources Main report

The SWSR will constitute the reference document on the status of global soil resources with a strong regional assessment on soil change. The information is based on peer-reviewed scientific literature, complemented with expert knowledge and reliable project outputs (mainly FAO ones). It provides a description and a ranking of ten major soil threats that endanger ecosystem functions, goods and services globally and in each region separately. Additionally, it describes direct and indirect pressure son soils and ways and means to combat soil degradation at all levels. The report contains a Synthesis report for policy makers that summarizes its findings, conclusions and recommendations.UCR::Vicerrectoría de Investigación::Unidades de Investigación::Ciencias Agroalimentarias::Centro de Investigaciones Agronómicas (CIA)UCR::Vicerrectoría de Docencia::Ciencias Agroalimentarias::Facultad de Ciencias Agroalimentarias::Escuela de Agronomí

Etat des Ressources en Sols dans le Monde (Résumé technique)

Etat des Ressources en Sols dans le Monde (Résumé technique

World’s soils are under threat

The Intergovernmental Technical Panel on Soils has completed the first State of the World's Soil Resources Report. Globally soil erosion was identified as the gravest threat, leading to deteriorating water quality in developed regions and to lowering of crop yields in many developing regions. We need to increase nitrogen and phosphorus fertilizer use in infertile tropical and semi-tropical soils – the regions where the most food insecurity among us are found – while reducing global use of these products overall. Stores of soil organic carbon are critical in the global carbon balance, and national governments must set specific targets to stabilize or ideally increase soil organic carbon stores. Finally the quality of soil information available for policy formulation must be improved – the regional assessments in the State of the World's Soil Resources Report frequently base their evaluations on studies from the 1990s based on observations made in the 1980s or earlier.European Commission/[]//BélgicaUCR::Vicerrectoría de Investigación::Unidades de Investigación::Ciencias Agroalimentarias::Centro de Investigaciones Agronómicas (CIA