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Impact of Integrating Annual and Perennial Legumes under Coffea arabica on Sloping Land

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  • Thaddeo Kahigwa Tibasiima

    (Department of Sustainable Agricultural Systems, Division of Organic Farming, University of Natural Resources and Life Sciences (BOKU), Gregor-Mendel-Strasse 33, 1180 Vienna, Austria
    Faculty of Agriculture and Environmental Sciences, Mountains of the Moon University (MMU), Fort Portal P.O. Box 837, Uganda)

  • Deous Mary Ekyaligonza

    (Department of Sustainable Agricultural Systems, Division of Organic Farming, University of Natural Resources and Life Sciences (BOKU), Gregor-Mendel-Strasse 33, 1180 Vienna, Austria
    Faculty of Agriculture and Environmental Sciences, Mountains of the Moon University (MMU), Fort Portal P.O. Box 837, Uganda)

  • John Patrick Kanahe Kagorora

    (Faculty of Agriculture and Environmental Sciences, Mountains of the Moon University (MMU), Fort Portal P.O. Box 837, Uganda)

  • Jürgen Kurt Friedel

    (Department of Sustainable Agricultural Systems, Division of Organic Farming, University of Natural Resources and Life Sciences (BOKU), Gregor-Mendel-Strasse 33, 1180 Vienna, Austria)

  • Andreas Melcher

    (Department of Sustainable Agricultural Systems, Institute for Development Research, University of Natural Resources and Life Sciences (BOKU), Peter-Jordan-Strasse 76, 1190 Vienna, Austria)

  • Bosco Bwambale

    (Faculty of Agriculture and Environmental Sciences, Mountains of the Moon University (MMU), Fort Portal P.O. Box 837, Uganda)

  • Edwin Akugizibwe

    (Faculty of Science, Technology and Innovation, Mountains of the Moon University (MMU), Fort Portal P.O. Box 837, Uganda)

  • Bernhard Freyer

    (Department of Sustainable Agricultural Systems, Division of Organic Farming, University of Natural Resources and Life Sciences (BOKU), Gregor-Mendel-Strasse 33, 1180 Vienna, Austria)

Abstract

Above-ground biomass cover under Coffea arabica on sloping land is beneficial but difficult to sustain. Interplanting annual and perennial legumes can sustain the above-ground biomass cover, and improve soil fertility, yield, and profitability. This was tested on 26 sloping farms in a four-growing season experiment on undersowing C. arabica with new crop combinations: Mucuna pruriens var. utilis (T1); Millettia dura Dunn (T2); a combination of M. pruriens and M. dura (T3); and the control with a no-cover legume (T4). On each farm, all treatments followed a randomized single-block design. T3 produced 8.7 mt/ha/yr above-ground biomass that was significantly ( p < 0.01) higher than other treatments and was increasing with the seasons. Under T3, plant-available nitrogen (N) and potassium (K) increased more than in other treatments. During the fourth season, coffee yield in T3 was 54%, 22%, and 11% higher than in T4, T2, and T1, respectively. The gross profit under T3 was 86% higher than in T4 in the fourth season. This indicates that interplanting a combination of M. pruriens and M. dura under C. arabica on sloping land can sustainably increase above-ground biomass cover, soil’s plant-available N and K, coffee yield, and profitability. Based on the results, the combination of M. pruriens and M. dura is recommended to optimize coffee production under the described conditions.

Suggested Citation

  • Thaddeo Kahigwa Tibasiima & Deous Mary Ekyaligonza & John Patrick Kanahe Kagorora & Jürgen Kurt Friedel & Andreas Melcher & Bosco Bwambale & Edwin Akugizibwe & Bernhard Freyer, 2023. "Impact of Integrating Annual and Perennial Legumes under Coffea arabica on Sloping Land," Sustainability, MDPI, vol. 15(3), pages 1-16, January.
    • Handle: RePEc:gam:jsusta:v:15:y:2023:i:3:p:2453-:d:1051127
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    References listed on IDEAS

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