RATIONAL FERTILIZER PRACTICE ON PUMICE SOILS

Fertilizer Impacts on Soils and Crops of Sub-saharan Africa

Editors The MSU International Development Paper series is designed to further the comparative analysis of international development activities in Africa, Latin America, Asia, and the Near East. The papers report research findings on historical, as well as contemporary, international development problems. The series includes papers on a wide range of topics, such as alternative rural development...

Nitrous Oxide Emissions from Claypan Soils Due to Nitrogen Fertilizer Source and Tillage/fertilizer Placement Practices

Long-term fate of nitrate fertilizer in agricultural soils.

Increasing diffuse nitrate loading of surface waters and groundwater has emerged as a major problem in many agricultural areas of the world, resulting in contamination of drinking water resources in aquifers as well as eutrophication of freshwaters and coastal marine ecosystems. Although empirical correlations between application rates of N fertilizers to agricultural soils and nitrate contamin...

Recommendation for fertilizer application for soils via qualitative reasoning

In Brazil, liming and fertilization are essential practices in agriculture due to the soils being acidic and poor in nutrients. Distinct decision tables that serve as support for recommendation of fertilizer application are used, but one of their features is that they are based on a strictly quantitative analysis of input variables. This sometimes causes di®culties in their use when calculating...

Knowing the African Soils to Improve Fertilizer Recommendations

J. Kihara et al. (eds.), Improving Soil Fertility Recommendations in Africa using the Decision Support System for Agrotechnology Transfer (DSSAT), DOI 10.1007/978-94-007-2960-5_3, © Springer Science+Business Media Dordrecht 2012 Abstract Africa is the continent with the lowest fertilizer use per hectare notwithstanding the fact it possesses geologically old, infertile and degraded soils. This c...