Rice yields and the effect of weed management in an organic production system with winter flooding

Winter flooding of paddy rice production is characterized by flooding of paddy fields during the winter fallow season. It has attracted attention in terms of its ecological function, supporting the biodiversity of paddy field ecosystems. Therefore, recent winter flooding in Japan has been conducted...

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Autores principales:	Toru Uno, Ryosuke Tajima, Kazumi Suzuki, Mizuhiko Nishida, Toyoaki Ito, Masanori Saito
Formato:	article
Lenguaje:	EN
Publicado:	Taylor & Francis Group 2021
Materias:	mechanical weeding organic farming repeated puddling rice rice bran application side-row fertilizer application weed control Plant culture SB1-1110
Acceso en línea:	https://doaj.org/article/4357e9ffe2964effae2b185088a978e5
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spelling	oai:doaj.org-article:4357e9ffe2964effae2b185088a978e52021-11-26T11:19:47ZRice yields and the effect of weed management in an organic production system with winter flooding1343-943X1349-100810.1080/1343943X.2020.1865823https://doaj.org/article/4357e9ffe2964effae2b185088a978e52021-10-01T00:00:00Zhttp://dx.doi.org/10.1080/1343943X.2020.1865823https://doaj.org/toc/1343-943Xhttps://doaj.org/toc/1349-1008Winter flooding of paddy rice production is characterized by flooding of paddy fields during the winter fallow season. It has attracted attention in terms of its ecological function, supporting the biodiversity of paddy field ecosystems. Therefore, recent winter flooding in Japan has been conducted by organic farming. However, it is not well documented how organic farming with winter flooding affect the productivity of rice. We conducted field experiments to examine changes in rice yield in organic farming with winter flooding compared with those in conventional and organic farming over the period of 5 and 9 years. The yields in organic farming with winter flooding were lower than those in conventional farming but were almost the same as those in organic farming. We found a trend that shows the relative yield of organic farming with winter flooding compared to that of conventional farming increased during the first several years after the conversion from conventional farming to organic farming with winter flooding, but that it decreased after several years. This trend may be caused by the flourishing of weeds during continuous organic farming with winter flooding. Therefore, we tested four weed control methods: rice bran application, mechanical weeding, repeated puddling, and side-row fertilizer application. Although each method suppressed weeds to certain extents, some combinations of different weeding methods more effectively suppressed weed growth, thereby resulting in enhanced rice yields. We found a trend in rice yield and a possibility of combining several weed control methods in organic farming with winter flooding.Toru UnoRyosuke TajimaKazumi SuzukiMizuhiko NishidaToyoaki ItoMasanori SaitoTaylor & Francis Grouparticlemechanical weedingorganic farmingrepeated puddlingricerice bran applicationside-row fertilizer applicationweed controlPlant cultureSB1-1110ENPlant Production Science, Vol 24, Iss 4, Pp 405-417 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	mechanical weeding organic farming repeated puddling rice rice bran application side-row fertilizer application weed control Plant culture SB1-1110
spellingShingle	mechanical weeding organic farming repeated puddling rice rice bran application side-row fertilizer application weed control Plant culture SB1-1110 Toru Uno Ryosuke Tajima Kazumi Suzuki Mizuhiko Nishida Toyoaki Ito Masanori Saito Rice yields and the effect of weed management in an organic production system with winter flooding
description	Winter flooding of paddy rice production is characterized by flooding of paddy fields during the winter fallow season. It has attracted attention in terms of its ecological function, supporting the biodiversity of paddy field ecosystems. Therefore, recent winter flooding in Japan has been conducted by organic farming. However, it is not well documented how organic farming with winter flooding affect the productivity of rice. We conducted field experiments to examine changes in rice yield in organic farming with winter flooding compared with those in conventional and organic farming over the period of 5 and 9 years. The yields in organic farming with winter flooding were lower than those in conventional farming but were almost the same as those in organic farming. We found a trend that shows the relative yield of organic farming with winter flooding compared to that of conventional farming increased during the first several years after the conversion from conventional farming to organic farming with winter flooding, but that it decreased after several years. This trend may be caused by the flourishing of weeds during continuous organic farming with winter flooding. Therefore, we tested four weed control methods: rice bran application, mechanical weeding, repeated puddling, and side-row fertilizer application. Although each method suppressed weeds to certain extents, some combinations of different weeding methods more effectively suppressed weed growth, thereby resulting in enhanced rice yields. We found a trend in rice yield and a possibility of combining several weed control methods in organic farming with winter flooding.
format	article
author	Toru Uno Ryosuke Tajima Kazumi Suzuki Mizuhiko Nishida Toyoaki Ito Masanori Saito
author_facet	Toru Uno Ryosuke Tajima Kazumi Suzuki Mizuhiko Nishida Toyoaki Ito Masanori Saito
author_sort	Toru Uno
title	Rice yields and the effect of weed management in an organic production system with winter flooding
title_short	Rice yields and the effect of weed management in an organic production system with winter flooding
title_full	Rice yields and the effect of weed management in an organic production system with winter flooding
title_fullStr	Rice yields and the effect of weed management in an organic production system with winter flooding
title_full_unstemmed	Rice yields and the effect of weed management in an organic production system with winter flooding
title_sort	rice yields and the effect of weed management in an organic production system with winter flooding
publisher	Taylor & Francis Group
publishDate	2021
url	https://doaj.org/article/4357e9ffe2964effae2b185088a978e5
work_keys_str_mv	AT toruuno riceyieldsandtheeffectofweedmanagementinanorganicproductionsystemwithwinterflooding AT ryosuketajima riceyieldsandtheeffectofweedmanagementinanorganicproductionsystemwithwinterflooding AT kazumisuzuki riceyieldsandtheeffectofweedmanagementinanorganicproductionsystemwithwinterflooding AT mizuhikonishida riceyieldsandtheeffectofweedmanagementinanorganicproductionsystemwithwinterflooding AT toyoakiito riceyieldsandtheeffectofweedmanagementinanorganicproductionsystemwithwinterflooding AT masanorisaito riceyieldsandtheeffectofweedmanagementinanorganicproductionsystemwithwinterflooding
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Rice yields and the effect of weed management in an organic production system with winter flooding

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