Impacts of the continuous maize cultivation on soil properties in Sainyabuli province, Laos

Abstract In tropical mountainous areas, soil degradation and yield decrease have been anticipated due to conversion from shifting to continuous cultivation and the introduction of cash crops. In our previous report, we quantified the decrease in maize yield under continuous cultivation in farmers’ f...

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Autores principales:	Kazuhiko Fujisao, Phanthasin Khanthavong, Saythong Oudthachit, Naruo Matsumoto, Koki Homma, Hidetoshi Asai, Tatsuhiko Shiraiwa
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2020
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/a7c4d7f8ddf44a4d957519c7b57615ca
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spelling	oai:doaj.org-article:a7c4d7f8ddf44a4d957519c7b57615ca2021-12-02T15:39:57ZImpacts of the continuous maize cultivation on soil properties in Sainyabuli province, Laos10.1038/s41598-020-67830-92045-2322https://doaj.org/article/a7c4d7f8ddf44a4d957519c7b57615ca2020-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-020-67830-9https://doaj.org/toc/2045-2322Abstract In tropical mountainous areas, soil degradation and yield decrease have been anticipated due to conversion from shifting to continuous cultivation and the introduction of cash crops. In our previous report, we quantified the decrease in maize yield under continuous cultivation in farmers’ fields in Laos. In this report, we focused on soil nutritional conditions under continuous cultivation in the farmers’ fields. For the purpose, twelve soil properties were investigated over two years from three sample sites in each of the 40 farmers’ fields with the duration of continuous cultivation varying from 1 to 30 years. Total carbon (TC), total nitrogen (TN), available phosphorus, exchangeable potassium, and exchangeable calcium in the soil decreased with increasing duration of continuous cultivation in the sloped fields. These soil nutrients decreased to around half of the initial content in these 30 years. However, the decreasing rates of TC and TN were negligible in the flat fields. Other soil properties such as clay and exchangeable magnesium were not related to the duration of continuous cultivation in both sloped and flat fields. The reduction in maize yield was mainly explained by TC, but the determination coefficient was only 0.24. Although further analysis is required to quantify the effect of soil nutrients on maize production, the development of integrated soil management would be necessary in the sloped fields for sustainable crop production in the study site.Kazuhiko FujisaoPhanthasin KhanthavongSaythong OudthachitNaruo MatsumotoKoki HommaHidetoshi AsaiTatsuhiko ShiraiwaNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 10, Iss 1, Pp 1-9 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Kazuhiko Fujisao Phanthasin Khanthavong Saythong Oudthachit Naruo Matsumoto Koki Homma Hidetoshi Asai Tatsuhiko Shiraiwa Impacts of the continuous maize cultivation on soil properties in Sainyabuli province, Laos
description	Abstract In tropical mountainous areas, soil degradation and yield decrease have been anticipated due to conversion from shifting to continuous cultivation and the introduction of cash crops. In our previous report, we quantified the decrease in maize yield under continuous cultivation in farmers’ fields in Laos. In this report, we focused on soil nutritional conditions under continuous cultivation in the farmers’ fields. For the purpose, twelve soil properties were investigated over two years from three sample sites in each of the 40 farmers’ fields with the duration of continuous cultivation varying from 1 to 30 years. Total carbon (TC), total nitrogen (TN), available phosphorus, exchangeable potassium, and exchangeable calcium in the soil decreased with increasing duration of continuous cultivation in the sloped fields. These soil nutrients decreased to around half of the initial content in these 30 years. However, the decreasing rates of TC and TN were negligible in the flat fields. Other soil properties such as clay and exchangeable magnesium were not related to the duration of continuous cultivation in both sloped and flat fields. The reduction in maize yield was mainly explained by TC, but the determination coefficient was only 0.24. Although further analysis is required to quantify the effect of soil nutrients on maize production, the development of integrated soil management would be necessary in the sloped fields for sustainable crop production in the study site.
format	article
author	Kazuhiko Fujisao Phanthasin Khanthavong Saythong Oudthachit Naruo Matsumoto Koki Homma Hidetoshi Asai Tatsuhiko Shiraiwa
author_facet	Kazuhiko Fujisao Phanthasin Khanthavong Saythong Oudthachit Naruo Matsumoto Koki Homma Hidetoshi Asai Tatsuhiko Shiraiwa
author_sort	Kazuhiko Fujisao
title	Impacts of the continuous maize cultivation on soil properties in Sainyabuli province, Laos
title_short	Impacts of the continuous maize cultivation on soil properties in Sainyabuli province, Laos
title_full	Impacts of the continuous maize cultivation on soil properties in Sainyabuli province, Laos
title_fullStr	Impacts of the continuous maize cultivation on soil properties in Sainyabuli province, Laos
title_full_unstemmed	Impacts of the continuous maize cultivation on soil properties in Sainyabuli province, Laos
title_sort	impacts of the continuous maize cultivation on soil properties in sainyabuli province, laos
publisher	Nature Portfolio
publishDate	2020
url	https://doaj.org/article/a7c4d7f8ddf44a4d957519c7b57615ca
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Impacts of the continuous maize cultivation on soil properties in Sainyabuli province, Laos

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