Accumulation of SOC under organic and no-fertilizations, and its influence on crop yields in Tanzania’s semiarid zone

Introduction: To estimate differential accumulation of soil organic carbon (SOC) and its ecological significance is very important to smallholder farmers in the Tanzania’s semiarid areas. This study investigated the accumulation of SOC and other important soil nutrients under organic and no-fertiliz...

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Autores principales:	Msafiri Y. Mkonda, Xinhua He
Formato:	article
Lenguaje:	EN
Publicado:	Taylor & Francis Group 2018
Materias:	agriculture ecosystems environment farm management semiarid tanzania Ecology QH540-549.5
Acceso en línea:	https://doaj.org/article/da86a44f1c57460aa34de8379ae1d740
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spelling	oai:doaj.org-article:da86a44f1c57460aa34de8379ae1d7402021-12-02T18:50:56ZAccumulation of SOC under organic and no-fertilizations, and its influence on crop yields in Tanzania’s semiarid zone2332-887810.1080/20964129.2018.1463146https://doaj.org/article/da86a44f1c57460aa34de8379ae1d7402018-02-01T00:00:00Zhttp://dx.doi.org/10.1080/20964129.2018.1463146https://doaj.org/toc/2332-8878Introduction: To estimate differential accumulation of soil organic carbon (SOC) and its ecological significance is very important to smallholder farmers in the Tanzania’s semiarid areas. This study investigated the accumulation of SOC and other important soil nutrients under organic and no-fertilizations, and correlated SOC with crop yields. Using data from long-term experimental study sites of semiarid in Tanzania, we estimated SOC accumulation in different soil treatments and depths where a total of 128 soil samples were collected at the depths of 0–20 cm and 20–40 cm from two villages (sites) with organic fertilization and no-fertilization treatments. Sites under organic fertilization were defined as those which have received manure fertilization for more than 5 years on continuum basis. Outcomes: The accumulation of SOC was significantly greater in soils under organic fertilizations (1.15 and 0.80 MgC ha−1 at soil depth and 20–40 cm) and decreased with increasing soil depths. Similarly, TN and P decreased from 0.40 and 2.40 Mg (0–20 cm) to 0.16 and 2.10 Mg (20–40 cm), respectively. Other important soil nutrients such as calcium (Ca2+), potassium (K+), magnesium (Mg2+), and sodium (Na+) had similar pattern. In addition, soil bulk density was less under organic fertilization (1.1 g/cm3) than under no-fertilization (1.2 g/cm3) and it increased with soil depths. Correspondingly, the crop yields were significantly higher (1.6 tn ha−1) under organic fertilizations than (0.6 tn ha−1) under no-fertilizations indicating that crop yields were significantly affected by SOC. Discussion: Organic fertilization i.e., especially cattle manure in the area has considerable fertility potential. To optimize soil fertility potential, we need to consider such kind of fertilization from household to national level. Conclusion: Our results demonstrated that manure application was the best fertilization method for improving soil fertility in most croplands of Tanzania’s semiarid areas, especially in this era of climate change scenarios.Msafiri Y. MkondaXinhua HeTaylor & Francis Grouparticleagricultureecosystemsenvironmentfarm managementsemiaridtanzaniaEcologyQH540-549.5ENEcosystem Health and Sustainability, Vol 4, Iss 2, Pp 34-47 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	agriculture ecosystems environment farm management semiarid tanzania Ecology QH540-549.5
spellingShingle	agriculture ecosystems environment farm management semiarid tanzania Ecology QH540-549.5 Msafiri Y. Mkonda Xinhua He Accumulation of SOC under organic and no-fertilizations, and its influence on crop yields in Tanzania’s semiarid zone
description	Introduction: To estimate differential accumulation of soil organic carbon (SOC) and its ecological significance is very important to smallholder farmers in the Tanzania’s semiarid areas. This study investigated the accumulation of SOC and other important soil nutrients under organic and no-fertilizations, and correlated SOC with crop yields. Using data from long-term experimental study sites of semiarid in Tanzania, we estimated SOC accumulation in different soil treatments and depths where a total of 128 soil samples were collected at the depths of 0–20 cm and 20–40 cm from two villages (sites) with organic fertilization and no-fertilization treatments. Sites under organic fertilization were defined as those which have received manure fertilization for more than 5 years on continuum basis. Outcomes: The accumulation of SOC was significantly greater in soils under organic fertilizations (1.15 and 0.80 MgC ha−1 at soil depth and 20–40 cm) and decreased with increasing soil depths. Similarly, TN and P decreased from 0.40 and 2.40 Mg (0–20 cm) to 0.16 and 2.10 Mg (20–40 cm), respectively. Other important soil nutrients such as calcium (Ca2+), potassium (K+), magnesium (Mg2+), and sodium (Na+) had similar pattern. In addition, soil bulk density was less under organic fertilization (1.1 g/cm3) than under no-fertilization (1.2 g/cm3) and it increased with soil depths. Correspondingly, the crop yields were significantly higher (1.6 tn ha−1) under organic fertilizations than (0.6 tn ha−1) under no-fertilizations indicating that crop yields were significantly affected by SOC. Discussion: Organic fertilization i.e., especially cattle manure in the area has considerable fertility potential. To optimize soil fertility potential, we need to consider such kind of fertilization from household to national level. Conclusion: Our results demonstrated that manure application was the best fertilization method for improving soil fertility in most croplands of Tanzania’s semiarid areas, especially in this era of climate change scenarios.
format	article
author	Msafiri Y. Mkonda Xinhua He
author_facet	Msafiri Y. Mkonda Xinhua He
author_sort	Msafiri Y. Mkonda
title	Accumulation of SOC under organic and no-fertilizations, and its influence on crop yields in Tanzania’s semiarid zone
title_short	Accumulation of SOC under organic and no-fertilizations, and its influence on crop yields in Tanzania’s semiarid zone
title_full	Accumulation of SOC under organic and no-fertilizations, and its influence on crop yields in Tanzania’s semiarid zone
title_fullStr	Accumulation of SOC under organic and no-fertilizations, and its influence on crop yields in Tanzania’s semiarid zone
title_full_unstemmed	Accumulation of SOC under organic and no-fertilizations, and its influence on crop yields in Tanzania’s semiarid zone
title_sort	accumulation of soc under organic and no-fertilizations, and its influence on crop yields in tanzania’s semiarid zone
publisher	Taylor & Francis Group
publishDate	2018
url	https://doaj.org/article/da86a44f1c57460aa34de8379ae1d740
work_keys_str_mv	AT msafiriymkonda accumulationofsocunderorganicandnofertilizationsanditsinfluenceoncropyieldsintanzaniassemiaridzone AT xinhuahe accumulationofsocunderorganicandnofertilizationsanditsinfluenceoncropyieldsintanzaniassemiaridzone
_version_	1718377474911371264

Accumulation of SOC under organic and no-fertilizations, and its influence on crop yields in Tanzania’s semiarid zone

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