Soil nutrients and maize yields responses to indigenous agroforestry tree post-fallows management in Tanzania

Agriculture is characterized by low production and expansion into forests and woodlands rather than increased productivity leading to deforestation and land degradation in sub-Saharan Africa. Use of appropriate low input agricultural and other land management technologies may increase production and...

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Autores principales:	Vincent G. Vyamana, Shabani A.O. Chamshama, Samora M. Andrew
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Soil productivity Soil fertility Food security Deforestation Land degradation Sub-Saharan Africa Forestry SD1-669.5 Plant ecology QK900-989
Acceso en línea:	https://doaj.org/article/a5cdb4bd600c4572a24ff700e91a1fc3
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spelling	oai:doaj.org-article:a5cdb4bd600c4572a24ff700e91a1fc32021-12-04T04:36:20ZSoil nutrients and maize yields responses to indigenous agroforestry tree post-fallows management in Tanzania2666-719310.1016/j.tfp.2021.100164https://doaj.org/article/a5cdb4bd600c4572a24ff700e91a1fc32021-12-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S2666719321001035https://doaj.org/toc/2666-7193Agriculture is characterized by low production and expansion into forests and woodlands rather than increased productivity leading to deforestation and land degradation in sub-Saharan Africa. Use of appropriate low input agricultural and other land management technologies may increase production and benefit smallholder farmers through increased productivity in already degraded land. A field experiment was established to assess tree fallows and tree coppice intercropping of indigenous agroforestry tree species (Albizia harveyi and Albizia versicolor) for soil fertility and maize yield improvements in Morogoro, Tanzania. A. versicolor tree fallows recorded significantly (p < 0.05) highest amounts of soil total nitrogen, extractable phosphorus, calcium, magnesium and potassium in 0 - 15 cm soil depth compared to the A. harveyi tree fallows and continuous cropping. A. harveyi tree fallow recorded significantly (p < 0.05) higher amounts of organic carbon and calcium than the continuous cropping system. In comparison with continuous cropping, amount of organic carbon was higher by 41% and 56% in A. harveyi and A. versicolor tree fallows, respectively. During the first cropping season, yields of grains (1.26 Mg ha−1), cobs (0.3 Mg ha−1) and stovers (2.43 Mg ha−1) in maize intercropped with A. versicolor coppices were significantly (p < 0.05) higher than those of maize intercropped with A. harveyi coppices (0.74 Mg ha−1, 0.2 Mg ha−1, 1.49 Mg ha−1) and maize in continuous cropping system (0.29 Mg ha−1, 0.06 Mg ha−1 and 1.06 Mg ha−1). During the second cropping season, yields of maize stovers, height and diameter growth were lower in intercropped maize relative to continuous cropping by 98% to 98.7%, 14.8% to 15.3% and 46.4% to 81.0% respectively; due to increasing competition imposed by growing coppices. The studied indigenous agroforestry tree species are recommended for rotational woodlots and short rotation coppice systems to enhance agricultural productivity and safeguard the environment.Vincent G. VyamanaShabani A.O. ChamshamaSamora M. AndrewElsevierarticleSoil productivitySoil fertilityFood securityDeforestationLand degradationSub-Saharan AfricaForestrySD1-669.5Plant ecologyQK900-989ENTrees, Forests and People, Vol 6, Iss , Pp 100164- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Soil productivity Soil fertility Food security Deforestation Land degradation Sub-Saharan Africa Forestry SD1-669.5 Plant ecology QK900-989
spellingShingle	Soil productivity Soil fertility Food security Deforestation Land degradation Sub-Saharan Africa Forestry SD1-669.5 Plant ecology QK900-989 Vincent G. Vyamana Shabani A.O. Chamshama Samora M. Andrew Soil nutrients and maize yields responses to indigenous agroforestry tree post-fallows management in Tanzania
description	Agriculture is characterized by low production and expansion into forests and woodlands rather than increased productivity leading to deforestation and land degradation in sub-Saharan Africa. Use of appropriate low input agricultural and other land management technologies may increase production and benefit smallholder farmers through increased productivity in already degraded land. A field experiment was established to assess tree fallows and tree coppice intercropping of indigenous agroforestry tree species (Albizia harveyi and Albizia versicolor) for soil fertility and maize yield improvements in Morogoro, Tanzania. A. versicolor tree fallows recorded significantly (p < 0.05) highest amounts of soil total nitrogen, extractable phosphorus, calcium, magnesium and potassium in 0 - 15 cm soil depth compared to the A. harveyi tree fallows and continuous cropping. A. harveyi tree fallow recorded significantly (p < 0.05) higher amounts of organic carbon and calcium than the continuous cropping system. In comparison with continuous cropping, amount of organic carbon was higher by 41% and 56% in A. harveyi and A. versicolor tree fallows, respectively. During the first cropping season, yields of grains (1.26 Mg ha−1), cobs (0.3 Mg ha−1) and stovers (2.43 Mg ha−1) in maize intercropped with A. versicolor coppices were significantly (p < 0.05) higher than those of maize intercropped with A. harveyi coppices (0.74 Mg ha−1, 0.2 Mg ha−1, 1.49 Mg ha−1) and maize in continuous cropping system (0.29 Mg ha−1, 0.06 Mg ha−1 and 1.06 Mg ha−1). During the second cropping season, yields of maize stovers, height and diameter growth were lower in intercropped maize relative to continuous cropping by 98% to 98.7%, 14.8% to 15.3% and 46.4% to 81.0% respectively; due to increasing competition imposed by growing coppices. The studied indigenous agroforestry tree species are recommended for rotational woodlots and short rotation coppice systems to enhance agricultural productivity and safeguard the environment.
format	article
author	Vincent G. Vyamana Shabani A.O. Chamshama Samora M. Andrew
author_facet	Vincent G. Vyamana Shabani A.O. Chamshama Samora M. Andrew
author_sort	Vincent G. Vyamana
title	Soil nutrients and maize yields responses to indigenous agroforestry tree post-fallows management in Tanzania
title_short	Soil nutrients and maize yields responses to indigenous agroforestry tree post-fallows management in Tanzania
title_full	Soil nutrients and maize yields responses to indigenous agroforestry tree post-fallows management in Tanzania
title_fullStr	Soil nutrients and maize yields responses to indigenous agroforestry tree post-fallows management in Tanzania
title_full_unstemmed	Soil nutrients and maize yields responses to indigenous agroforestry tree post-fallows management in Tanzania
title_sort	soil nutrients and maize yields responses to indigenous agroforestry tree post-fallows management in tanzania
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/a5cdb4bd600c4572a24ff700e91a1fc3
work_keys_str_mv	AT vincentgvyamana soilnutrientsandmaizeyieldsresponsestoindigenousagroforestrytreepostfallowsmanagementintanzania AT shabaniaochamshama soilnutrientsandmaizeyieldsresponsestoindigenousagroforestrytreepostfallowsmanagementintanzania AT samoramandrew soilnutrientsandmaizeyieldsresponsestoindigenousagroforestrytreepostfallowsmanagementintanzania
_version_	1718372932534665216

Soil nutrients and maize yields responses to indigenous agroforestry tree post-fallows management in Tanzania

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