Comparison of Rice Yield after Various Years of Cultivation by Natural Farming

Natural Farming (NF), characterized by no external input such as chemical fertilizers and biocides, is a farming method aiming to produce safe food by an environmentally sound method. Examination of the long-term change in the productivity under NF will provide us with important information for the...
Ausführliche Beschreibung

Gespeichert in:

Autor*in:	Preecha Neera [verfasserIn] Manabu Katano [verfasserIn] Toshihiro Hasegawa [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	1999

Schlagwörter:	Natural farming Oryza sativa L. Time after conversion Yield gap

Übergeordnetes Werk:	In: Plant Production Science - Taylor & Francis Group, 2004, 2(1999), 1, Seite 58-64
Übergeordnetes Werk:	volume:2 ; year:1999 ; number:1 ; pages:58-64

Links:	Link aufrufen Link aufrufen Link aufrufen Journal toc Journal toc

DOI / URN:	10.1626/pps.2.58

Katalog-ID:	DOAJ031766730

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520			\|a Natural Farming (NF), characterized by no external input such as chemical fertilizers and biocides, is a farming method aiming to produce safe food by an environmentally sound method. Examination of the long-term change in the productivity under NF will provide us with important information for the low input and sustainable rice production. Yield surveys were conducted in 17 prefectures of three climatically different districts (the Tohoku, Kinki, and Chugoku) in Japan in 1990 and 542 sets of data were collected from NF paddies, differing in years (1 – 50) after convertion to NF (YAC). The average brown rice yields of NF ranged from 352 g m−2 in Okayama to 504 g m−2 in Akita. The variation in NF yield generally reflected the average regional yield by conventional farming (CF) (p<0.05), but the yield gap between NF and CF was larger, the higher the CF yield. The average yield gap for the overall data was about –66 g m−2, 13% of the regional average in 1990. Although no significant increase in yield with YAC was observed in the data for each district, the yield gap was narrowed particularly after around 15 YAC onward in the Tohoku district. The yield in the Chugoku district did not show any notable increase with the extension of YAC. The yield gain with extension of YAC was modest, but the level of productivity was maintained at about 79 – 98% of the regional average.
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allfieldsSound	10.1626/pps.2.58 doi (DE-627)DOAJ031766730 (DE-599)DOAJ911d4742fbc24debbc3795cab77a1543 DE-627 ger DE-627 rakwb eng SB1-1110 Preecha Neera verfasserin aut Comparison of Rice Yield after Various Years of Cultivation by Natural Farming 1999 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Natural Farming (NF), characterized by no external input such as chemical fertilizers and biocides, is a farming method aiming to produce safe food by an environmentally sound method. Examination of the long-term change in the productivity under NF will provide us with important information for the low input and sustainable rice production. Yield surveys were conducted in 17 prefectures of three climatically different districts (the Tohoku, Kinki, and Chugoku) in Japan in 1990 and 542 sets of data were collected from NF paddies, differing in years (1 – 50) after convertion to NF (YAC). The average brown rice yields of NF ranged from 352 g m−2 in Okayama to 504 g m−2 in Akita. The variation in NF yield generally reflected the average regional yield by conventional farming (CF) (p<0.05), but the yield gap between NF and CF was larger, the higher the CF yield. The average yield gap for the overall data was about –66 g m−2, 13% of the regional average in 1990. Although no significant increase in yield with YAC was observed in the data for each district, the yield gap was narrowed particularly after around 15 YAC onward in the Tohoku district. The yield in the Chugoku district did not show any notable increase with the extension of YAC. The yield gain with extension of YAC was modest, but the level of productivity was maintained at about 79 – 98% of the regional average. Natural farming Oryza sativa L. Time after conversion Yield gap Plant culture Manabu Katano verfasserin aut Toshihiro Hasegawa verfasserin aut In Plant Production Science Taylor & Francis Group, 2004 2(1999), 1, Seite 58-64 (DE-627)391333887 (DE-600)2152184-0 13491008 nnns volume:2 year:1999 number:1 pages:58-64 https://doi.org/10.1626/pps.2.58 kostenfrei https://doaj.org/article/911d4742fbc24debbc3795cab77a1543 kostenfrei http://dx.doi.org/10.1626/pps.2.58 kostenfrei https://doaj.org/toc/1343-943X Journal toc kostenfrei https://doaj.org/toc/1349-1008 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4367 GBV_ILN_4700 AR 2 1999 1 58-64
language	English
source	In Plant Production Science 2(1999), 1, Seite 58-64 volume:2 year:1999 number:1 pages:58-64
sourceStr	In Plant Production Science 2(1999), 1, Seite 58-64 volume:2 year:1999 number:1 pages:58-64
format_phy_str_mv	Article
institution	findex.gbv.de
topic_facet	Natural farming Oryza sativa L. Time after conversion Yield gap Plant culture
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container_title	Plant Production Science
authorswithroles_txt_mv	Preecha Neera @@aut@@ Manabu Katano @@aut@@ Toshihiro Hasegawa @@aut@@
publishDateDaySort_date	1999-01-01T00:00:00Z
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callnumber-first	S - Agriculture
author	Preecha Neera
spellingShingle	Preecha Neera misc SB1-1110 misc Natural farming misc Oryza sativa L. misc Time after conversion misc Yield gap misc Plant culture Comparison of Rice Yield after Various Years of Cultivation by Natural Farming
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topic_title	SB1-1110 Comparison of Rice Yield after Various Years of Cultivation by Natural Farming Natural farming Oryza sativa L. Time after conversion Yield gap
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title	Comparison of Rice Yield after Various Years of Cultivation by Natural Farming
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title_full	Comparison of Rice Yield after Various Years of Cultivation by Natural Farming
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title_sort	comparison of rice yield after various years of cultivation by natural farming
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title_auth	Comparison of Rice Yield after Various Years of Cultivation by Natural Farming
abstract	Natural Farming (NF), characterized by no external input such as chemical fertilizers and biocides, is a farming method aiming to produce safe food by an environmentally sound method. Examination of the long-term change in the productivity under NF will provide us with important information for the low input and sustainable rice production. Yield surveys were conducted in 17 prefectures of three climatically different districts (the Tohoku, Kinki, and Chugoku) in Japan in 1990 and 542 sets of data were collected from NF paddies, differing in years (1 – 50) after convertion to NF (YAC). The average brown rice yields of NF ranged from 352 g m−2 in Okayama to 504 g m−2 in Akita. The variation in NF yield generally reflected the average regional yield by conventional farming (CF) (p<0.05), but the yield gap between NF and CF was larger, the higher the CF yield. The average yield gap for the overall data was about –66 g m−2, 13% of the regional average in 1990. Although no significant increase in yield with YAC was observed in the data for each district, the yield gap was narrowed particularly after around 15 YAC onward in the Tohoku district. The yield in the Chugoku district did not show any notable increase with the extension of YAC. The yield gain with extension of YAC was modest, but the level of productivity was maintained at about 79 – 98% of the regional average.
abstractGer	Natural Farming (NF), characterized by no external input such as chemical fertilizers and biocides, is a farming method aiming to produce safe food by an environmentally sound method. Examination of the long-term change in the productivity under NF will provide us with important information for the low input and sustainable rice production. Yield surveys were conducted in 17 prefectures of three climatically different districts (the Tohoku, Kinki, and Chugoku) in Japan in 1990 and 542 sets of data were collected from NF paddies, differing in years (1 – 50) after convertion to NF (YAC). The average brown rice yields of NF ranged from 352 g m−2 in Okayama to 504 g m−2 in Akita. The variation in NF yield generally reflected the average regional yield by conventional farming (CF) (p<0.05), but the yield gap between NF and CF was larger, the higher the CF yield. The average yield gap for the overall data was about –66 g m−2, 13% of the regional average in 1990. Although no significant increase in yield with YAC was observed in the data for each district, the yield gap was narrowed particularly after around 15 YAC onward in the Tohoku district. The yield in the Chugoku district did not show any notable increase with the extension of YAC. The yield gain with extension of YAC was modest, but the level of productivity was maintained at about 79 – 98% of the regional average.
abstract_unstemmed	Natural Farming (NF), characterized by no external input such as chemical fertilizers and biocides, is a farming method aiming to produce safe food by an environmentally sound method. Examination of the long-term change in the productivity under NF will provide us with important information for the low input and sustainable rice production. Yield surveys were conducted in 17 prefectures of three climatically different districts (the Tohoku, Kinki, and Chugoku) in Japan in 1990 and 542 sets of data were collected from NF paddies, differing in years (1 – 50) after convertion to NF (YAC). The average brown rice yields of NF ranged from 352 g m−2 in Okayama to 504 g m−2 in Akita. The variation in NF yield generally reflected the average regional yield by conventional farming (CF) (p<0.05), but the yield gap between NF and CF was larger, the higher the CF yield. The average yield gap for the overall data was about –66 g m−2, 13% of the regional average in 1990. Although no significant increase in yield with YAC was observed in the data for each district, the yield gap was narrowed particularly after around 15 YAC onward in the Tohoku district. The yield in the Chugoku district did not show any notable increase with the extension of YAC. The yield gain with extension of YAC was modest, but the level of productivity was maintained at about 79 – 98% of the regional average.
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title_short	Comparison of Rice Yield after Various Years of Cultivation by Natural Farming
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Comparison of Rice Yield after Various Years of Cultivation by Natural Farming

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