Digital mapping of soil nutrients for the Republics of Burundi and Rwanda

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Bindraban, Prem S.
María Ruipérez González
Bas Kempen
Sandra Wolters
Cyrille Hicintuka
Zacharie Nzohabonayo
Wendt John
Oscar Nduwimana
John Veerkamp
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Lack of awareness about soil fertility constraints is a major limitation to developing sound liming and fertilizer recommendations in sub-Saharan Africa. Detailed maps of soil nutrient concentrations and soil acidity can help to identify areas with soil fertility constraints. For this purpose, maps of primary (P, K), secondary (Ca, Mg, S) and micronutrients (Cu, Zn, B), as well as pH, soil acidity (Al+H), effective CEC and organic matter were generated for the 0-20 cm soil layer by means of digital soil mapping using random forest models at a 250 m spatial resolution for Burundi and Rwanda. The models explained between 20% and 45% of the variation in the data.
Soil mapping, Micronutrients, Soil acidity
María Ruiperez González, Bas Kempen, Prem S. Bindraban, Sandra Wolters, Cyrille Hicintuka, Marcien Nibasumba, Zacharie Nzohabonayo, John Wendt, Oscar Nduwimana, John Veerkamp, 2015. Digital mapping of soil nutrients for the Republics of Burundi and Rwanda. Poster presented at the Wageningen Soil Conference, 23-27 August 2015, Wageningen, The Netherlands. nbsp;