Reviving cropping land in Sub-saharan Africa: An in-depth review of the land recovery potential and strategies

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Review Paper 08/09/2023
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Reviving cropping land in Sub-saharan Africa: An in-depth review of the land recovery potential and strategies

Joseph Kalonga, Kelvin Mtei, Boniface Massawe, Anthony Kimaro
J. Bio. Env. Sci.23( 3), 13-33, September 2023.
Certificate: JBES 2023 [Generate Certificate]

Abstract

Land degradation is a major challenge affecting the sustainability of agriculture and livestock production systems worldwide. Poor soil and water management practices coupled with unsustainable agricultural practices are known to accelerate land degradation. Globally, approximately 18.1 million km2 of land is degraded, of which 62% is due to unsustainable use of the land and 38% is due to overgrazing. In Sub-Saharan Africa is 46% grassland, 12% cropland, and 26% forest land. This review found that SSA has a vast potential in restoring degraded land ranging from land degradation monitoring and evaluation, agricultural conservation techniques, soil biotechnology, and soil management techniques. The increasing land degradation problem in SSA is due to the ineffective utilization of soil conservation techniques. Effective utilization of land recovery potential and strategies in SSA for the aim of restoring degraded land in the region will play a large part in addressing the problem of land degradation which resulted in food insecurity in the SSA. This review recommends the following: the creation of participatory policies that allow governments to work successfully with local farmers to manage the soil sustainably using soil restoration and conservation technologies, making better and more effective use of the large informational resources from previously completed soil conservation and restoration based projects, continued funding of agricultural research to encourage the creation of technology that will restore degradation land and increase yields using sustainable land management practices, and need for the agent action to transform existing conventional agriculture into agricultural practices which ensure sustainability.

VIEWS 152

Adetunji AT, Ncube B, Mulidzi R, Lewu FB. 2020. Management impact and benefit of cover crops on soil quality: A review. Soil and Tillage Research 204, 104717. https://doi.org/10.1016 /j.still. 2020.

Agegnehu G, Amede T. 2017. Integrated Soil Fertility and Plant Nutrient Management in Tropical Agro-Ecosystems: A Review. Pedosphere 27(4), 662-680. https://doi.org/10.1016/S1002-0160(17)0382-5

Ahemad M, Kibret M. 2014. Mechanisms and applications of plant growth promoting rhizobacteria: Current perspective. Journal of King Saud University – Science 26(1), 1-20. https://doi.org/10.1016/j.jks.

Alemayehu G, Shibabaw A, Adgo E, Asch F, Freyer B. 2020. Crop rotation and organic matter application restore soil health and productivity of degraded highland crop farms in northwest Ethiopia. Cogent Food and Agriculture 6(1).

Alexakis DD, Hadjimitsis DG, Agapiou A. 2013. Integrated use of remote sensing, GIS and precipitation data for the assessment of soil erosion rate in the catchment area of “Yialias” in Cyprus. Atmospheric Research 131, 108-124.

Amare T, Zegeye AD, Yitaferu B, Steenhuis TS, Hurni H, Zeleke G. 2014. Combined effect of soil bund with biological soil and water conservation measures in the northwestern Ethiopian highlands. Ecohydrology and Hydrobiology 14(3), 192-199.

Aouadj SA, Degdag H, Hasaoui O, Nasrallah Y, Zouidi M, Allam A, Belkacm N, Khatir H. 2023. Contribution of G.I.S and Remote Sensing for the Risk Mapping of Soil Water Erosion at Saida Province (Western of Algeria). Advanced Research in Life Sciences 7(1), 10-21. https://doi.org/10.2478/arls

Bai Z, Caspari T, Gonzalez MR, Batjes NH, Mäder P, Bünemann EK, de Goede R, Brussaard L, Xu M, Ferreira CSS, Reintam E, Fan H, Mihelič R, Glavan M, Tóth Z. 2018. Effects of agricultural management practices on soil quality: A review of long-term experiments for Europe and China. Agriculture, Ecosystems and Environment 265(May), 1-7.

Bindraban PS, van der Velde M, Ye L, van den Berg M, Materechera S, Kiba DI, Tamene L, Ragnarsdóttir KV, Jongschaap R, Hoogmoed M, Hoogmoed W, van Beek C, van Lynden G. 2012. Assessing the impact of soil degradation on food production. Current Opinion in Environmental Sustainability 4(5), 478-488.

Björnberg KE, Jonas E, Marstorp H, Tidåker P. 2015. The role of biotechnology in sustainable agriculture: Views and perceptions among key actors in the Swedish food supply chain. Sustainability (Switzerland) 7(6), 7512-7529.

Blanco-Canqui H, Ruis SJ. 2020. Cover crop impacts on soil physical properties: A review. Soil Science Society of America Journal 84(5), 1527-1576. https://doi.org/10.1002/saj2.20129

Bowles TM, Jackson LE, Cavagnaro TR. 2018. Mycorrhizal fungi enhance plant nutrient acquisition and modulate nitrogen loss with variable water regimes. In Global Change Biology (Vol. 24, Issue 1). https://doi.org/10.1111/gcb.13884

Braun J Von, Gerber N, Mirzabaev A, Nkonya E, Gerber N. 2013. The Economics of Land Degradation Joachim (Issue March).

Brennan EB, Acosta-Martinez V. 2017. Cover cropping frequency is the main driver of soil microbial changes during six years of organic vegetable production. Soil Biology and Biochemistry 109(October), 188-204. https://doi.org/10.1016 /j.soilbio.2017.01.014

Chabay I. 2018. Land degradation and restoration. In Companion to Environmental Studies. https:// doi.org /10.4324/9781315640051-105

Chalise D, Kumar L, Kristiansen P. 2019. Land degradation by soil erosion in Nepal: A review. Soil Systems 3(1), 1-18. https://doi.org/10.3390 /soilsy stems3010012

Chiemela SN, Noulekoun F, Zenebe A, Abadi N, Birhane E. 2018. Transformation of degraded farmlands to agroforestry in Zongi Village, Ethiopia. Agroforestry Systems 92(5), 1317-1328. https:// doi.org /10.1007/s10457-017-0076-7

Coombs C, Lauzon JD, Deen B, Van Eerd LL. 2017. Legume cover crop management on nitrogen dynamics and yield in grain corn systems. Field Crops Research 201, 75-85. https://doi.org/ 10.1016 /j.fcr.2016.11.001

Dagar JC, Sileshi GW, Akinnifesi FK. 2020. Agroforestry for Degraded Landscapes. In J. C. Dagar, S. R. Gupta, & D. Teketay (Eds.), Agroforestry for Degraded Landscapes (Vol. 1). Springer Singapore. https://doi.org/10.1007/978-981-15-6807-7

Dahlin S, Kirchmann H, Kätterer T, Gunnarsson S, Bergström L. 2005. Possibilities for improving nitrogen use from organic materials in agricultural cropping systems. Ambio 34(4-5), 288-295. https://doi.org/10.1579/0044-7447-34.4.288

Dollinger J, Jose S. 2018. Agroforestry for soil health. Agroforestry Systems 92(2), 213-219. https:// doi.org/10.1007/s10457-018-0223-9

Dutter C, Damiano LA, Niemi J, Miller BA, Schulte LA, Liebman M, Helmers MJ, Cruse RM, Mcdaniel MD. 2023. Field Crops Research Contour prairie strips affect adjacent soil but have only slight effects on crops. Field Crops Research 296(December 2022), 108905. https://doi.org /10.1016 /j.fcr.2023.108905

Emmerling C, Schmidt A, Ruf T, von Francken-Welz H, Thielen S. 2017. Impact of newly introduced perennial bioenergy crops on soil quality parameters at three different locations in W-Germany. Journal of Plant Nutrition and Soil Science 180(6), 759-767. https://doi.org/10.1002 /jpln.201

Farzadfar S, Knight JD, Congreves KA. 2021. Soil organic nitrogen: an overlooked but potentially significant contribution to crop nutrition. Plant and Soil 462(1-2), 7-23. https://doi.org/10.1007/s11104-021-04860-w

Fernando AL, Costa J, Barbosa B, Monti A, Rettenmaier N. 2018. Environmental impact assessment of perennial crop cultivation on marginal soils in the Mediterranean Region. Biomass and Bioenergy 111(April), 174-186. https://doi.org/ 10.1016 /j.biombioe.2017.04.005

Ganasri BP, Ramesh H. 2016. Assessment of soil erosion by RUSLE model using remote sensing and GIS – A case study of Nethravathi Basin. Geoscience Frontiers 7(6), 953-961. https://doi.org/10.1016

Gebrernichael D, Nyssen J, Poesen J, Deckers J, Haile M, Govers G, Moeyersons J. 2005. Effectiveness of stone bunds in controlling soil erosion on cropland in the Tigray Highlands, northern Ethiopia. Soil Use and Management 21(3), 287-297. https://doi.org/10.1111/j.1475-2743.2005.

Gebreselassie S, Kirui OK, Mirzabaev A. 2015. Economics of land degradation and improvement in Ethiopia. In Economics of Land Degradation and Improvement- A Global Assessment for Sustainable Development. https://doi.org/10.1007/978-3-319

Ghosh A, Rakshit S, Tikle S, Das S, Chatterjee U, Pande CB, Alataway A, Al-Othman AA, Dewidar AZ, Mattar MA. 2023. Integration of GIS and Remote Sensing with RUSLE Model for Estimation of Soil Erosion. Land 12(1).

Gianinetto M. 2008. Automatic digital terrain model generation using Cartosat-1 stereo images. Sensor Review 28(4), 299-310.

Gomiero T. 2013. Alternative land management strategies and their impact on soil conservation. Agriculture (Switzerland) 3(3), 464-483.

Gupta VP. 2020. Role of agroforestry in soil conservation and soil health management : A review. Journal of Pharmacognosy and Phytochemistry 9(4), 555-558.

Hamdy A, Aly A. 2014. Land Degradation, Agriculture Productivity and Food Security. Fifth International Scientific Agricultural Symposium „Agrosym 2014“, October. https://scholar. google.com/scholar?hl=en&as_sdt=0%2C5&q=Hamdy+A%2C+Aly+A+%282014%29+Land+degradation%2C+agriculture+productivity+and+food+security.+In+Fifth+International+Scientific+Agricultural+Symposium.+Presented+at+the+Agrosym.&btnG=

Hank TB, Berger K, Bach H, Clevers JGPW, Gitelson A, Zarco-Tejada P, Mauser W. 2019. Spaceborne Imaging Spectroscopy for Sustainable Agriculture: Contributions and Challenges. In Surveys in Geophysics (Vol. 40, Issue 3). Springer Netherlands. https://doi.org/10.1007/s10712-018-

Haruna A, Yahaya SM. 2021. Recent Advances in the Chemistry of Bioactive Compounds from Plants and Soil Microbes: a Review. Chemistry Africa 4(2), 231-248. https://doi.org/10.1007/s42250-020

Haruna SI, Anderson SH, Udawatta RP, Gantzer CJ, Phillips NC, Cui S, Gao Y. 2020. Improving soil physical properties through the use of cover crops: A review. Agrosystems, Geosciences and Environment 3(1), 1-18. https://doi.org

Hossain A, Krupnik TJ, Timsina J, Mahboob MG. 2020. Agricultural Land Degradation: Processes and Problems Undermining Future Food Security. In Environment, Climate, Plant and Vegetation Growth (Issue October). https://doi.org/10.1007/978-3-

ICRAF 2010. Restoration of soil fertility through agroforestry technologies and innovations.

Igiehon NO. 2018. Rhizosphere Microbiome Modulators : Contributions of Nitrogen Fixing Bacteria towards Sustainable Agriculture. https:// doi.org/10.3390/ijerph15040574

Jiru EB. 2019. Review on Contribution of GIS and RS for Soil Degradation Assessment in Ethiopia. Journal of Environment and Earth Science, 1-18. https://doi.org/10.7176/jees/9-12-01

Jose S. 2009. Agroforestry for ecosystem services and environmental benefits : an overview 1-10. https://doi.org/10.1007/s10457-009-9229-7

Kabanza AK, Dondeyne S, Kimaro DN, Kafiriti E, Poesen J, Deckers JA. 2013. Effectiveness of soil conservation measures in two contrasting landscape units of South Eastern Tanzania. Zeitschrift Fur Geomorphologie 57(3), 269-288. https://doi.org /10.1127 /0372-8854/2013/0102

Kaspar TC, Singer JW. 2015. The Use of Cover Crops to Manage Soil. Soil Management: Building a Stable Base for Agriculture 321-337. https://doi.org /10.2136/2011.soilmanagement.c21

Kiage LM. 2013. Perspectives on the assumed causes of land degradation in the rangelands of Sub-Saharan Africa. Progress in Physical Geography 37(5), 664-684. https://doi.org/10.1177 /03091333

Kimaru G, Jama B. 2006. Improving land management in Eastern and Southern Africa Improving land management in Eastern and Southern Africa A review of practices and policies 7-8.

Kiptoo KO, Mirzabaev A. 2014. Economics of land degradation in Eastern Africa. University of Bonn, Center for Development Research (ZEF), Bonn This, ZEF Working Paper Series, No. 128.

Kumar S, Meena RS, Datta R, Verma SK. 2020. Carbon and Nitrogen Cycling in Soil. In Carbon and Nitrogen Cycling in Soil (Issue August 2019). https://doi.org/10.1007/978-981-13-7264-3

Kumawat A, Yadav D, Kala Samadharmam Rashmi I. 2018. Soil and Water Conservation Measures for Agricultural Sustainability. Intechopen 25(4), e275-e281. http://dx.doi.org /10.5772/intechopen.92895

Kumawat A, Yadav D, Rashmi KSI. 2020. Soil and Water Conservation Measures for Agricultural Sustainability. Soil Moisture Importance 23. https://doi.org/10.5772/intechopen.92895

Kunta K. 2009. Effects of Geographic Information Quality on Soil Erosion Prediction (Issue May).

Kuyah S, Whitney CW, Jonsson M, Sileshi GW, Öborn I, Muthuri CW, Luedeling E, Whitney CW, Jonsson M. 2019. Agroforestry delivers a win-win solution for ecosystem services in sub-Saharan Africa. A meta-analysis.

Kyei E. 2020. Using the Land Degradation Surveillance Framework ( LDSF ) and Farmers ’ Perceptions to assess how land degradation has changed over nine years in the Sasumua catchment, Kenya. September 2017. https://doi.org/10.13140 /RG.2.2.27462.83527

Lal R. 2015. Restoring soil quality to mitigate soil degradation. Sustainability (Switzerland) 7(5), 5875-5895. https://doi.org/10.3390/su7055875

Ledo A, Smith P, Zerihun A, Whitaker J, Luis J, Qin VZ, Mcnamara NP, Zinn YL, Llorente M, Liebig M, Kuhnert M, Dondini M, Don A. 2020. Changes in soil organic carbon under perennial crops. March 1-11. https://doi.org/10.1111/gcb.15120

Li C, Shi W, Huang M. 2023. Effects of Crop Rotation and Topography on Soil Erosion and Nutrient Loss under Natural Rainfall Conditions on the Chinese Loess Plateau. Land 12(2). https:// doi.org /10.3390/land12020265

Libohova Z, Seybold C, Wysocki D, Wills S, Schoeneberger P, Williams C, Lindbo D, Stott D, Owens PR. 2018. Reevaluating the effects of soil organic matter and other properties on available water-holding capacity using the National Cooperative Soil Survey Characterization Database. Journal of Soil and Water Conservation 73(4), 411-421. https://doi.org/10.2489/jswc.73.4.411

Lohbeck M, Winowiecki L, Aynekulu E, Okia C, Vågen TG. 2018. Trait-based approaches for guiding the restoration of degraded agricultural landscapes in East Africa. Journal of Applied Ecology 55(1), 59-68. https://doi.org/10.1111/1365-2664.

Lu D, Li G, Valladares GS, Batistella M. 2004. Mapping soil erosion risk in Rondônia, Brazilian Amazonia: Using RUSLE, remote sensing and GIS. Land Degradation and Development 15(5), 499-512. https://doi.org/10.1002/ldr.634

Mazi M El, Hmamouchi M, Saber E, Bouchantouf Soumaya Houari A. 2022. Deforestation effects on soil properties and erosion : a case study in the central Rif, Morocco. Eurasian Journal of Soil Science 11(4), 275-283. https://doi.org /10.18393/ejss.1098600

Mcgowan AR, Nicoloso RS, Diop HE, Roozeboom KL, Rice CW. 2019. Soil Organic Carbon, Aggregation, and Microbial Community Structure in Annual and Perennial Biofuel Crops. Agronomy Journal 111(1), 128-142. https://doi.org /10.2134/agronj2018.04.0284

Meena VS, Mishra PK, Bisht JK, Pattanayak A. 2017. Agriculturally important microbes for sustainable agriculture. In Agriculturally Important Microbes for Sustainable Agriculture (Vol. 2, Issue January). https://doi.org/10.1007/978-981-10

Metternicht GI, Zinck JA. 2003. Remote sensing of soil salinity : potentials and constraints 85, 1-20. https://doi.org/10.1016/S0034-4257(02)00188-8

Misebo AM. 2018. The Role of Agronomic Practices on Soil and Water Conservation in Ethiopia; Implication for Climate Change Adaptation: A Review. Journal of Agricultural Science 10(6), 227.

Mishra J, Prakash J, Arora NK. 2016. Role of Beneficial Soil Microbes in Sustainable Agriculture and Environmental Management. Climate Change and Environmental Sustainability 4(2), 137. https://doi.org/10.5958/2320-642x.2016.00015.6

Moisa MB, Dejene IN, Hirko O, Gemeda DO. 2022. Impact of deforestation on soil erosion in the highland areas of western Ethiopia using geospatial techniques : a case study of the Upper Anger watershed. Asia-Pacific Journal of Regional Science, April. https://doi.org/10.1007/s41685-022-00238-7

Molnar TJ, Kahn PC, Ford TM, Funk CJ, Funk CR. 2013. Tree crops, permanent agriculture: Concepts from the past for a sustainable future. Resources 2(4), 457-488. https://doi.org/10.3390

Mugandani R, Mwadzingeni L. 2021. Contribution of Conservation Agriculture to Soil Security 1-11.

Muoni T, Koomson E, Öborn I, Marohn C, Watson CA, Bergkvist G, Barnes A, Cadisch G, Duncan A. 2019. Reducing soil erosion in smallholder farming systems in East Africa through the introduction of different crop types. Experimental Agriculture. https://doi.org/10.1017 /S00144797 0

Murambadoro D. 2011. ` Multi-Scale Analysis of Urban Wetland Changes Using Satellite Remote Sensing Techniques (Issue Turnbull 1986).

Mwase W, Sefasi A, Njoloma J, Nyoka BI, Manduwa D, Nyaika J. 2015. Factors Affecting Adoption of Agroforestry and Evergreen Agriculture in Southern Africa. Environment and Natural Resources Research 5(2). https://doi.org/ 10.5539

Nalivata P, Kibunja C, Mutegi JK, Tetteh FM. 2017. 3 . Integrated Soil Fertility Management in Sub-Saharan Africa. August. https://doi.org/10.1079 /9781786392046.0025

Nath Yadav A. 2017. Plant Growth Promoting Bacteria: Biodiversity and Multifunctional Attributes for Sustainable Agriculture. Advances in Biotechnology & Microbiology 5(5). https://doi.org /10.19080/aibm.2017.05.555671

Nielsen KM. 2019. Organic Farming. In Encyclopedia of Ecology (pp. 550-558). Elsevier. https://doi.org/10.1016/B978-0-12-409548-9.10603-

Niemiec M, Chowaniak M, Sikora J, Szelag-Sikora A, Gródek-Szostak Z, Komorowska M. 2020. Selected properties of soils for long-term use in organic farming. Sustainability (Switzerland) 12(6), 1-10. https://doi.org/10.3390/su12062509

Njaimwe AN. 2010. Tillage and Crop Rotation Impacts on Soil Quality Parameters and Maize Yield in Zanyokwe Irrigation Scheme, South Africa (Issue December). University of Fort Hare, South Africa.

Nkonya E, Mirzabaev A, von Braun J. 2015. Economics of land degradation and improvement – A global assessment for sustainable development. In Economics of Land Degradation and Improvement – A Global Assessment for Sustainable Development. https://doi.org/10.1007/978-3-319-19168-3

Novara A, Pulido M, Rodrigo-Comino J, Prima SDI, Smith P, Gristina L, Giménez-Morera A, Terol E, Salesa D, Keesstra S. 2019. Long-term organic farming on a citrus plantation results in soil organic carbon recovery. Geographical Research Letters 45(1), 271-286. https://doi.org/ 10.18172

Nyong PA, Martin NT. 2019. Enhancing agricultural sustainability and productivity under changing climate conditions through improved agroforestry practices in smallholder farming systems in Sub-Saharan Africa. African Journal of Agricultural Research 14(7), 379-388. https://doi.org /10.5897

Oliveira E. 2018. Can Strategic Spatial Planning Contribute to Land Degradation Reduction in Urban Regions ? State of the Art and Future Research. https://doi.org/10.3390/su10040949

Omuto CT, Balint Z, Alim MS. 2014. A Framework for National Assessment of Land Degradation In the Drylands : A Case Study Of Somalia 119(October 2011), 105-119.

Otaiku AA, Soretire AA, Mmom PC. 2022. Biofertilizer Impacts on Soybean [Glycine max (L.)] Cultivation, Humid Tropics| Biological Nitrogen Fixation, Yield, Soil Health and Smart Agriculture Framework 9(1), 38-139.

Otte J, Pica-Ciamarra U, Morzaria S. 2019. A comparative overview of the livestock-environment interactions in Asia and Sub-Saharan Africa. Frontiers in Veterinary Science 6(FEB). https:// doi.org/10.3389/fvets.2019.00037

Page KL, Dang YP, Dalal RC. 2020. The Ability of Conservation Agriculture to Conserve Soil Organic Carbon and the Subsequent Impact on Soil Physical, Chemical, and Biological Properties and Yield. Frontiers in Sustainable Food Systems 4(March), 1-17. https://doi.org/10.3389/fsufs.2020.00031

Panagos P, Karydas C, Borrelli P, Ballabio C, Meusburger K. 2014. Advances in soil erosion modeling through remote sensing data availability at European scale. Second International Conference on Remote Sensing and Geoinformation of the Environment (RSCy2014) 9229(August 2014), 92290I. https://doi.org/10.1117/12.2066383

Pimentel D. 2006. Soil erosion: A food and environmental threat. Environment, Development and Sustainability 8(1), 119-137. https://doi.org /10.1007/s10668-005-1262-8

Pinto R, Brito LM, Coutinho J. 2017. Organic production of horticultural crops with green manure, composted farmyard manure and organic fertiliser. Biological Agriculture and Horticulture 33(4), 269-284. https://doi.org/10.1080/01448 765.2017. 7521

Qiu Q, Bender SF, Mgelwa AS, Hu Y. 2022. Arbuscular mycorrhizal fungi mitigate soil nitrogen and phosphorus losses: A meta-analysis. Science of the Total Environment 807(October), 150857. https://doi.org/10.1016/j.scitotenv.2021.150857

Quinton JN, Tyrrel S. 2006. Effects of cattle manure on erosion rates and runoff water pollution by fecal coliforms. February. https://doi.org/ 10.1016

Rashid MI, Mujawar LH, Shahzad T, Almeelbi T, Ismail IMI, Oves M. 2016. Bacteria and fungi can contribute to nutrient bioavailability and aggregate formation in degraded soils. Microbiological Research 183, 26-41. https://doi.org /10.1016/j.micres.2015.11.007

Reddy GPO, Kumar N, Singh SK. 2018. Remote Sensing and GIS in Mapping and Monitoring of Land Degradation. 401-424. https://doi.org/10.1007/978-3-319-78711-4_20

Reich R, Eswaran H, Kapura S, Akca E. 2001. Land Degradation and Desertification in Desert Margins. Washington, D.C.: USDA Natural Resources Conservation Service.

Reith J, Ghazaryan G, Muthoni F, Dubovyk O. 2021. Assessment of land degradation in semiarid Tanzania using multiscale remote sensing datasets to support sustainable development goal 15.3. Remote Sensing 13(9). https://doi.org/10.3390/rs13091754

Rosenstock TS, Dawson IK, Aynekulu E, Chomba S, Degrande A, Fornace K, Jamnadass R, Kimaro A, Kindt R, Lamanna C, Malesu M, Mausch K, McMullin S, Murage P, Namoi N, Njenga M, Nyoka I, Paez Valencia AM, Sola P, Steward P. 2019. A Planetary Health Perspective on Agroforestry in Sub-Saharan Africa. One Earth 1(3), 330-344.

Sadeghi SH, Kheirfam H, Homaee M, Darki BZ, Vafakhah M. 2017. Improving runoff behavior resulting from direct inoculation of soil micro-organisms. Soil and Tillage Research 171(March), 35-41. https://doi.org/10.1016/j.still.2017.04.007

Saggau P, Kuhwald M, Duttmann R. 2023. Catena Effects of contour farming and tillage practices on soil erosion processes in a hummocky watershed. A model-based case study highlighting the role of tramline tracks. Catena 228(March), 107126. https://doi.org/10.1016/j.catena.2023.107126

Sanchez PA, Swarninathan MS. 2009. Hunger in Africa: The link between unhealthy people and unhealthy soils. Science and Sustainable Food Security: Selected Papers of M S Swaminathan 365, 85-87. https://doi.org/10.1142/97898142 82116

Seneviratne G, Jayasekara APDA, De Silva MSDL, Abeysekera UP. 2011. Developed microbial biofilms can restore deteriorated conventional agricultural soils. Soil Biology and Biochemistry 43(5), 1059-1062. https://doi.org/10.1016 /j.soilbio.

Seutloali KE, Dube T, Sibanda M. 2018. Developments in the remote sensing of soil erosion in the perspective of sub-Saharan Africa. Implications on future food security and biodiversity. Remote Sensing Applications: Society and Environment 9, 100-106. https://doi.org/10.1016/j.rsase.2017.12.002

Sher Y, Baker NR, Herman D, Fossum C, Hale L, Zhang X, Nuccio E, Saha M, Zhou J, Pett-Ridge J, Firestone M. 2020. Microbial extracellular polysaccharide production and aggregate stability controlled by switchgrass (Panicum virgatum) root biomass and soil water potential. Soil Biology and Biochemistry, 143(August 2019), 107742. https://doi.org/10.1016 /j.soilbio.2020.107742

Shrestha J, Subedi S, Timsina K, Chaudhary A. 2020. Conservation agriculture as an approach towards sustainable crop production : A Review. Farming & Management 5(1). https://doi.org/ 10.31830 /2456-8724.2020.002

Singh JS, Gupta VK. 2016. Degraded land restoration in reinstating CH4 sink. Frontiers in Microbiology 7(JUN), 1-5. https://doi.org/10.3389

Skoufogianni E, Solomou A, Molla A, Martinos K. 2016. Organic Farming as an Essential Tool of the Multifunctional Agriculture. Organic Farming- A Promising Way of Food Production. https://doi.org/10.5772/61630

Smith DR, Owens PR, Leytem AB, Warnemuende EA. 2007. Nutrient losses from manure and fertilizer applications as impacted by time to first runoff event. Environmental Pollution 147, 131-137. https://doi.org/10.1016/j.envpol. 2006

Stanturf JA, Palik BJ, Williams MI, Dumroese RK, Madsen P. 2014. Forest Restoration Paradigms. Journal of Sustainable Forestry 33. https://doi.org/10.1080/10549811.2014.884004

Taruvinga K, Kelly R, Price J. 2008. Gully mapping using remote sensing: Case study in KwaZulu-Natal, South Africa. Department of Geography and Environmental Management, MSc Thesis, 121.

Tenge AJ, Okoba BO, Sterk G. 2011. Physical Effectiveness and Farmers’Preferences of Soil and Water Conservation in the East African Highlands in West Usambara. September 2016. https://www.researchgate.net/profile/Joseph-Hella

Tesfahunegn BG, Tamene L, Vlek PLG. 2011. Geoderma Evaluation of soil quality identified by local farmers in Mai-Negus catchment, northern Ethiopia. Elsevier B.V 163, 209-218. https:// doi.org/10.1016/j.geoderma.2011.04.016

Teshome A, Rolker D, de Graaff J. 2013. Financial viability of soil and water conservation technologies in northwestern Ethiopian highlands. Applied Geography 37, 139-149. https://doi.org/ 10.1016 /j.apgeog.2012.11.007

Thierfelder C, Cheesman S, Rusinamhodzi L. 2013. Benefits and challenges of crop rotations in maize-based conservation agriculture (CA) cropping systems of southern Africa. International Journal of Agricultural Sustainability 11, 108-124. https:// doi.org /10.1080/14735903.2012.703894

Thierfelder C, Chivenge P, Mupangwa W, Rosenstock TS, Lamanna C, Eyre JX. 2017. How climate-smart is conservation agriculture (CA)? – its potential to deliver on adaptation, mitigation and productivity on smallholder farms in southern Africa. Food Security 9, 537-560. https://doi.org /10.1007

Tilahun K, Desta G. 2021. Impact of Physical Soil and Water Conservation Measures on Soil Erosion Reduction and Associated Constraints in the Highland of Ethiopia. Journal of Soil and Water Science 5, 171-183. https://doi.org /10.36959 /442

Toor MD, Adnan M, Raza A, Ahmed R, Arshad A, Maqsood H, Abbas F, Mughees-ud-din M, Shehzad MH, Zafar MK. 2020. Land Degradation and its Management : A Review. International Journal of Environmental Sciences & Natural Resources Warming 25, 63-66. https://doi.org /10.19080/IJESNR.2020.25.556157

Topwal M, Agarawal S, Topwal CM. 2018. Organic farming: Benefits, climate challenges and food security. International Journal of Chemical Studies 6, 944-948. www.organic-world.net

Tor-gunnar V, Norvin S, Ordonez J, Noel C, Ulloa I, Trujillo R, Norori R. 2013. Progress Update on the LDSF Field Surveys : Nicaragua Sentinel Landscape The Land Degradation Surveillance.

Tsatskin A. 2021. Selim Kapur · Sabit Erşahin Editors Soil Security for Ecosystem Management Mediterranean Soil Ecosystems (Issue February). https://doi.org/10.1007/978-3-319-00699-4

Tsegaye NT, Negewo DA, Mitiku ST. 2023. East African Journal of Forestry & Agroforestry 6, 137-147. https://doi.org/10.37284/eajfa.6.1.1183

Tully K, Sullivan C, Weil R, Sanchez P. 2015. The State of Soil Degradation in Sub-Saharan Africa: Baselines, Trajectories, and Solutions 6523-6552. https://doi.org/10.3390/su7066523

UNCCD. 2017. United Nations Convention to Combat Desertification. 2017. The Global Land Outlook, first edition.

Vågen TG, Winowiecki LA, Abegaz A, Hadgu KM. 2013. Landsat-based approaches for mapping of land degradation prevalence and soil functional properties in Ethiopia. Remote Sensing of Environment 134, 266-275. https://doi.org/ 10.1016 /j.rse.2013.03.006

Vågen TG, Winowiecki LA, Tondoh JE, Desta LT, Gumbricht T. 2014. Mapping of soil properties and land degradation risk in Africa using MODIS reflectance. Geoderma 263, 216-225. https:// doi.org/10.1016/j.geoderma.2015.06.023

Vanloqueren G, Baret PV. 2009. How agricultural research systems shape a technological regime that develops genetic engineering but locks out agroecological innovations. Research Policy 38, 971-983. https://doi.org/10.1016/j.respol.2009.02.008

Viswanath S, Lubina PA. 2018. Traditional agroforestry systems. Agroforestry: Anecdotal to Modern Science, Vol II, 91-119. https://doi.org /10.1007/978-981-10-7650-3_3

Vlek PLG, Le QB, Tamene L. 2008. Land decline in Land-Rich Africa. Development, March.

Vrieling A, Sterk G, Vigiak O. 2006. Spatial evaluation of soil erosion risk in the West Usambara Mountains, Tanzania. Land Degradation and Development 17, 301-319. https://doi.org /10.1002

Waswa BS, Vlek PLG, Tamene LD, Okoth P, Mbakaya D, Zingore S. 2013. Evaluating indicators of land degradation in smallholder farming systems of western Kenya. Geoderma 195-196, 192-200. https://doi.org/10.1016/j.geoderma.2012.11.007

Weerasekara CS, Udawatta RP, Gantzer CJ, Kremer RJ, Jose S, Veum KS. 2017. Effects of Cover Crops on Soil Quality: Selected Chemical and Biological Parameters. Communications in Soil Science and Plant Analysis 48, 2074-2082. https://doi.org/10.1080/00103624.2017.1406103

Winowiecki LA, Bargués-tobella A, Mukuralinda A, Mujawamariya P. 2021. Assessing soil and land health across two landscapes in eastern Rwanda to inform restoration activities. 767-783.

Wolka K, Mulder J, Biazin B. 2018. Effects of soil and water conservation techniques on crop yield, runoff and soil loss in Sub-Saharan Africa: A review. Agricultural Water Management 207, 67-79. https://doi.org/10.1016/j.agwat.2018.05.016

Wynants M, Kelly C, Mtei K, Munishi L, Patrick A, Rabinovich A, Nasseri M, Gilvear D, Roberts N, Boeckx P, Wilson G, Blake WH, Ndakidemi P. 2019. Drivers of increased soil erosion in East Africa’s agro-pastoral systems: changing interactions between the social, economic and natural domains. Regional Environmental Change 19, 1909-1921. https://doi.org/10.1007 /s10113-019-01520-9

Zaman S, Pramanick P, Mitra A. 2009. Chemical fertilizer. Dm.

Zandi P, Basu SK. 2016. Organic Farming for Sustainable Agriculture 1, 71-87. http://dx.doi.org /10.1007/978-3-319-26803-3_3

Zingore S, Delve RJ, Nyamangara J, Giller KE. 2008. Multiple benefits of manure: The key to the maintenance of soil fertility and restoration of depleted sandy soils on African smallholder farms. Nutrient Cycling in Agroecosystems 80, 267-282. https://doi.org/10.1007/s10705-007-9142-2

Zingore S, Mutegi J, Agesa B, Tamene L, Kihara J. 2015. Soil Degradation in Sub-Saharan Africa and Crop Production Options for Soil Rehabilitation. Better Crops with Plant Food 99, 24-26.