Influence of farmers’ socio-economic characteristics on nutrient flow and implications for system sustainability in smallholdings: a review

The rise in global human population, coupled with the effects of climate change, has increased the demand for arable land. Soil fertility has been the most affected, among other things. Many approaches to soil fertility management have been proposed by studies in Sub-Saharan Africa (SSA); however, t...

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Main Authors: Lydia Mhoro, Akida Ignas Meya, Nyambilila Abdallah Amuri, Patrick Alois Ndakidemi, Kelvin Marck Mtei, Karoli Nicholas Njau
Format: Article
Language:English
Published: Frontiers Media S.A. 2023-04-01
Series:Frontiers in Soil Science
Subjects:
Online Access:https://www.frontiersin.org/articles/10.3389/fsoil.2023.1112629/full
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author Lydia Mhoro
Lydia Mhoro
Akida Ignas Meya
Nyambilila Abdallah Amuri
Patrick Alois Ndakidemi
Kelvin Marck Mtei
Kelvin Marck Mtei
Karoli Nicholas Njau
author_facet Lydia Mhoro
Lydia Mhoro
Akida Ignas Meya
Nyambilila Abdallah Amuri
Patrick Alois Ndakidemi
Kelvin Marck Mtei
Kelvin Marck Mtei
Karoli Nicholas Njau
author_sort Lydia Mhoro
collection DOAJ
description The rise in global human population, coupled with the effects of climate change, has increased the demand for arable land. Soil fertility has been the most affected, among other things. Many approaches to soil fertility management have been proposed by studies in Sub-Saharan Africa (SSA); however, the question of sustainability remains. Nutrient monitoring (NUTMON), which combines biophysical and socio-economic features for soil fertility management, gives an in-situ soil fertility status of a given land use system, which ultimately provides guidance in proposing appropriate soil management techniques in a given land use system. In this review, the Preferred Reporting Items for Systematic Review and Meta-Analysis (PRISMA) approach was deployed for a systematic search of the literature materials. The review evaluated various studies on nutrient monitoring in SSA soils in order to understand the socioeconomic attributes and their influence on farming systems, as well as nutrient flow and balances. The review identified two dominant smallholder farming systems in SSA: mixed crop-livestock and mixed crop farming systems. Also, this review revealed that most nutrient balance studies in SSA have been done in mixed crop and livestock farming systems. However, regardless of the farming systems, the overall mean nutrient balances in all studies, particularly those of nitrogen (N) and potassium (K), were negative, indicating significant nutrient mining. The review further revealed a vast range of biophysical soil fertility management technologies; however, their adoption has been limited by socio-economic aspects including land ownership, gender, financial position, literacy level, and access to inputs. Therefore, in view of this situation, integrating biophysical and socioeconomic disciplines could address the problem of soil nutrient depletion holistically, thus decreasing the existing negative nutrient balances in the SSA region.
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spelling doaj.art-761b5175b1fe483e9536b44466d4dee12023-04-14T05:38:50ZengFrontiers Media S.A.Frontiers in Soil Science2673-86192023-04-01310.3389/fsoil.2023.11126291112629Influence of farmers’ socio-economic characteristics on nutrient flow and implications for system sustainability in smallholdings: a reviewLydia Mhoro0Lydia Mhoro1Akida Ignas Meya2Nyambilila Abdallah Amuri3Patrick Alois Ndakidemi4Kelvin Marck Mtei5Kelvin Marck Mtei6Karoli Nicholas Njau7School of Life Sciences and Bioengineering, The Nelson Mandela African Institution of Science and Technology, Arusha, TanzaniaDepartment of Soil and Geological Sciences, College of Agriculture, Sokoine University of Agriculture, Morogoro, TanzaniaSchool of Life Sciences and Bioengineering, The Nelson Mandela African Institution of Science and Technology, Arusha, TanzaniaDepartment of Soil and Geological Sciences, College of Agriculture, Sokoine University of Agriculture, Morogoro, TanzaniaSchool of Life Sciences and Bioengineering, The Nelson Mandela African Institution of Science and Technology, Arusha, TanzaniaSchool of Life Sciences and Bioengineering, The Nelson Mandela African Institution of Science and Technology, Arusha, TanzaniaSchool of Materials, Energy and Environmental Sciences, The Nelson Mandela African Institution of Science and Technology, Arusha, TanzaniaSchool of Materials, Energy and Environmental Sciences, The Nelson Mandela African Institution of Science and Technology, Arusha, TanzaniaThe rise in global human population, coupled with the effects of climate change, has increased the demand for arable land. Soil fertility has been the most affected, among other things. Many approaches to soil fertility management have been proposed by studies in Sub-Saharan Africa (SSA); however, the question of sustainability remains. Nutrient monitoring (NUTMON), which combines biophysical and socio-economic features for soil fertility management, gives an in-situ soil fertility status of a given land use system, which ultimately provides guidance in proposing appropriate soil management techniques in a given land use system. In this review, the Preferred Reporting Items for Systematic Review and Meta-Analysis (PRISMA) approach was deployed for a systematic search of the literature materials. The review evaluated various studies on nutrient monitoring in SSA soils in order to understand the socioeconomic attributes and their influence on farming systems, as well as nutrient flow and balances. The review identified two dominant smallholder farming systems in SSA: mixed crop-livestock and mixed crop farming systems. Also, this review revealed that most nutrient balance studies in SSA have been done in mixed crop and livestock farming systems. However, regardless of the farming systems, the overall mean nutrient balances in all studies, particularly those of nitrogen (N) and potassium (K), were negative, indicating significant nutrient mining. The review further revealed a vast range of biophysical soil fertility management technologies; however, their adoption has been limited by socio-economic aspects including land ownership, gender, financial position, literacy level, and access to inputs. Therefore, in view of this situation, integrating biophysical and socioeconomic disciplines could address the problem of soil nutrient depletion holistically, thus decreasing the existing negative nutrient balances in the SSA region.https://www.frontiersin.org/articles/10.3389/fsoil.2023.1112629/fullagro-ecosystemsnutrient balancesfarming systemssmallholdersmanure
spellingShingle Lydia Mhoro
Lydia Mhoro
Akida Ignas Meya
Nyambilila Abdallah Amuri
Patrick Alois Ndakidemi
Kelvin Marck Mtei
Kelvin Marck Mtei
Karoli Nicholas Njau
Influence of farmers’ socio-economic characteristics on nutrient flow and implications for system sustainability in smallholdings: a review
Frontiers in Soil Science
agro-ecosystems
nutrient balances
farming systems
smallholders
manure
title Influence of farmers’ socio-economic characteristics on nutrient flow and implications for system sustainability in smallholdings: a review
title_full Influence of farmers’ socio-economic characteristics on nutrient flow and implications for system sustainability in smallholdings: a review
title_fullStr Influence of farmers’ socio-economic characteristics on nutrient flow and implications for system sustainability in smallholdings: a review
title_full_unstemmed Influence of farmers’ socio-economic characteristics on nutrient flow and implications for system sustainability in smallholdings: a review
title_short Influence of farmers’ socio-economic characteristics on nutrient flow and implications for system sustainability in smallholdings: a review
title_sort influence of farmers socio economic characteristics on nutrient flow and implications for system sustainability in smallholdings a review
topic agro-ecosystems
nutrient balances
farming systems
smallholders
manure
url https://www.frontiersin.org/articles/10.3389/fsoil.2023.1112629/full
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