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Multi-influencing-factors' evaluation for organic-based soil fertility technologies out-scaling in Upper Tana Catchment in Kenya
In: Scientific African, Band 7, S. e00231
ISSN: 2468-2276
Impact of cement waste on soil fertility and crop productivity: a serious concern for food security
In: Environmental science and pollution research: ESPR
ISSN: 1614-7499
Impacts of integrated soil fertility management on yield and household income: The case of Tamale (Ghana) and Kakamega (Kenya)
Integrated soil fertility management (ISFM) has been widely promoted by research and philanthropic organizations as well as governments to increase crop yields and improve livelihoods of smallholder farmers in Africa. Therefore, it is surprising that there is still scant information on its impact on crop yields and household income. This paper uses a counterfactual model to assess ISFM impact on yields and total household incomes using far household data from Tamale (Northern Ghana) and Kakamega (Western Kenya). The analyses reveal that ISFM adoption leads to an increase in maize yields by up to 27% in Tamale and 16% in Kakamega. Increasing the number of ISFM components, however, does not improve yields. Despite the effect on yields, adoption of ISFM does not increase total household incomes at both locations. Some implications for future research are discussed.
BASE
Poor Farmers – Poor Yields: Socio-Economic, Soil Fertility And Crop Management Indicators Affecting Climbing Bean Productivity In Northern Rwanda
Climbing bean is the key staple legume crop in the highlands of East and Central Africa. We assessed the impact of interactions between soil fertility characteristics, crop management and socio-economic factors, such as household resource endowment and gender of the farmer, on climbing bean productivity and yield responses to basal P fertiliser in northern Rwanda. Through a combination of detailed characterisations of 12 farms and on-farm demonstration trials at 110 sites, we evaluated variability in grain yields and responses to fertiliser. Grain yields varied between 0.14 and 6.9 t ha−1 with an overall average of 1.69 t ha−1. Household resource endowment and gender of the farmer was strongly associated with climbing bean yield, even though these were partly confounded with Sector. Poorer households and women farmers achieved lower yields than wealthier households and male farmers. Household resource endowment and gender were likely to act as proxies for a range of agronomic and crop management factors that determine crop productivity, such as soil fertility, current and past access to organic manure and mineral fertiliser, access to sufficient quality staking material, ability to conduct crop management operation on time, but we found evidence for only some of these relationships. Poorer households and female farmers grew beans on soils with poorer soil fertility. Moreover, poorer households had a lower density of stakes, while stake density was strongly correlated with yield. Diammonium phosphate (DAP) fertiliser application led to a substantial increase in the average grain yield (0.66 t ha−1), but a large variability in responses implied that its use would be economically worthwhile for roughly half of the farmers. For the sake of targeting agricultural innovations to those households that are most likely to adopt, the Ubudehe household typology – a Rwandan government system of wealth categorisation – could be a useful and easily available tool to structure rural households within regions of Rwanda that are relatively uniform in agro-ecology.
BASE
Poor farmers - poor yields: socio-economic, soil fertility and crop management indicators affecting climbing bean productivity in northern Rwanda
Climbing bean is the key staple legume crop in the highlands of East and Central Africa. We assessed the impact of interactions between soil fertility characteristics, crop management and socio-economic factors, such as household resource endowment and gender of the farmer, on climbing bean productivity and yield responses to basal P fertiliser in northern Rwanda. Through a combination of detailed characterisations of 12 farms and on-farm demonstration trials at 110 sites, we evaluated variability in grain yields and responses to fertiliser. Grain yields varied between 0.14 and 6.9 t ha−1 with an overall average of 1.69 t ha−1. Household resource endowment and gender of the farmer was strongly associated with climbing bean yield, even though these were partly confounded with Sector. Poorer households and women farmers achieved lower yields than wealthier households and male farmers. Household resource endowment and gender were likely to act as proxies for a range of agronomic and crop management factors that determine crop productivity, such as soil fertility, current and past access to organic manure and mineral fertiliser, access to sufficient quality staking material, ability to conduct crop management operation on time, but we found evidence for only some of these relationships. Poorer households and female farmers grew beans on soils with poorer soil fertility. Moreover, poorer households had a lower density of stakes, while stake density was strongly correlated with yield. Diammonium phosphate (DAP) fertiliser application led to a substantial increase in the average grain yield (0.66 t ha−1), but a large variability in responses implied that its use would be economically worthwhile for roughly half of the farmers. For the sake of targeting agricultural innovations to those households that are most likely to adopt, the Ubudehe household typology – a Rwandan government system of wealth categorisation – could be a useful and easily available tool to structure rural households within regions of Rwanda that are relatively uniform in agro-ecology. ; Peer Review
BASE
The dividing of fields in Sudano-Sahelian West Africa: The roles of soil fertility variation and legal doctrine
In: Land use policy: the international journal covering all aspects of land use, Band 77, S. 362-374
ISSN: 0264-8377
Estimating and mapping pasture soil fertility in a portuguese montado based on a objective model and geostatistical techniques
In: Computers and Electronics in Agriculture, Band 157, S. 500-508
Economic gains of improving soil fertility and water holding capacity with clay application: the impact of soil remediation research in Northeast Thailand
In: Journal of development effectiveness, Band 1, Heft 3, S. 336-352
ISSN: 1943-9407
Empirical assessment of subjective and objective soil fertility metrics in east Africa: Implications for researchers and policy makers
In: World development: the multi-disciplinary international journal devoted to the study and promotion of world development, Band 105, S. 367-382
Determinants of integrated soil fertility management technologies adoption by smallholder farmers in the Chinyanja Triangle of Southern Africa
In: Land use policy: the international journal covering all aspects of land use, Band 59, S. 38-48
ISSN: 0264-8377
Preparation of a New Biochar-Based Microbial Fertilizer: Nutrient Release Patterns and Synergistic Mechanisms to Improve Soil Fertility
In: STOTEN-D-22-22325
SSRN
Using ordered weight averaging (OWA) aggregation for multi-criteria soil fertility evaluation by GIS (case study: southeast Iran)
In: Computers and electronics in agriculture: COMPAG online ; an international journal, Band 132, S. 1-13
ISSN: 1872-7107
Soil Fertility in Relation to Slope Position and Agricultural Land Use: A Case Study of Umbulo Catchment in Southern Ethiopia
In: Environmental management: an international journal for decision makers, scientists, and environmental auditors, Band 42, Heft 5, S. 753-763
ISSN: 1432-1009