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Assessment of Fertilizer Use Efficiency of Maize in the Weathered Soils of Walungu District, DR Congo

Conference paper

Abstract

Soil nutrient depletion is the constraint to productivity in South-Kivu province DR Congo. One of the reasons is the low capacity of the soil to retain water and nutrients for this reason, no response to fertilizer is observed. It could be necessary to combine fertilizer with manure of different qualities, in different rates and modes of application. Trials were conducted in two types of weathered soils of Walungu District: kalongo, red soils, and civu, black soils. Yield was affected by fertilizer use and the increase from NPK varied from 95 to 190 % compared with the similar treatment where NPK was not applied. Applying NPK to the control without organic matter (OM), led to an increase of 190 %. For OM alone, the improved manure applied in high doses and in pockets gave the highest yield within this category (1,350 kg/ha). The control without OM and fertilizer had the lowest yield (273 kg/ha). civu soils showed a higher yield than kalongo soils. Small-scale farmers can invest in fertilizer with local manure but it will be important to control quality to obtain a higher response to fertilizer.

Keywords

Fertilizer efficiency Weathered soil Fertilizer use Maize yield 

Notes

Acknowledgments

Our thanks go to CIALCA (especially TSBF-CIAT) which granted us the space and the financial means for this research. We also thank the Evangelical University in Africa for its support. We are grateful to Dr Jean-Berckmans Muhigwa for the translation from French.

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Copyright information

© Springer International Publishing Switzerland 2014

Authors and Affiliations

  1. 1.Faculty of Agriculture and Environmental ScienceUniversité Evangélique en AfriqueBukavuDR Congo
  2. 2.CIAT (International Center for Tropical Agriculture)Tropical Soil Biology and Fertility Research AreaNairobiKenya
  3. 3.Department of ScienceUniversité Officielle de BukavuBukavuDR Congo

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