Effect of using drip irrigation on the growth, yield and its components of soybean grown in a low rainfall region in Japan

Field experiments were carried out for 3 years to assess the effect of using drip irrigation on the growth and yield of two Japanese soybean cultivars in Kagawa Prefecture, which has the second-lowest rainfall in Japan. The treatments were drip irrigation (Drip) and rainfed (Rainfed) from the bloomi...

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Autores principales: Kanchana Chomsang, Masahiro Morokuma, Sakae Agarie, Masanori Toyota
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Lenguaje:EN
Publicado: Taylor & Francis Group 2021
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spelling oai:doaj.org-article:b2ab2599270e45ea94b2b0daecacecb72021-11-26T11:19:47ZEffect of using drip irrigation on the growth, yield and its components of soybean grown in a low rainfall region in Japan1343-943X1349-100810.1080/1343943X.2021.1893607https://doaj.org/article/b2ab2599270e45ea94b2b0daecacecb72021-10-01T00:00:00Zhttp://dx.doi.org/10.1080/1343943X.2021.1893607https://doaj.org/toc/1343-943Xhttps://doaj.org/toc/1349-1008Field experiments were carried out for 3 years to assess the effect of using drip irrigation on the growth and yield of two Japanese soybean cultivars in Kagawa Prefecture, which has the second-lowest rainfall in Japan. The treatments were drip irrigation (Drip) and rainfed (Rainfed) from the blooming stage to the full-seed stage. The largest seed yield was achieved in 2017, followed by 2018 and 2016. This order corresponded to the total water input (TWI, the sum of effective rainfall and irrigation) throughout cultivation. TWI was the main factor affecting the variation of yield and its components among years. Similarly, the higher TWI in Drip than in Rainfed contributed to the higher yield in Drip than in Rainfed within each year. ANOVA detected a significant effect of drip irrigation on total seed yield, above-ground dry matter (AGDM) at maturity, and numbers of branches, nodes, and fertile pods. AGDM had a significant correlation with the mean crop growth rate (CGR) during the treatment, and CGR was closely correlated with the mean net assimilation rate (NAR). Significant positive correlation among NAR, radiation use efficiency, and leaf water potential suggested that drip irrigation prevented the decrease of plant water status that contributed to maintain dry matter production. The advantage of using drip irrigation for soybean cultivation at the experiment site would be suppressing the decrease in yield in years with low rainfall rather than achieving higher yield than standard in years with normal or high rainfall. Abbreviations: AGDM, aboveground dry matter; CGR, crop growth rate; CISR, cumulative intercepted solar radiation; DAS, days after sowing; ETa, actual evapotranspiration; ETr, reference evapotranspiration; FIPAR, fraction of intercepted photosynthetically active radiation; LAI, leaf area index; ΨL, leaf water potential; mLAI, mean leaf area index; NAR, net assimilation rate; PAR, photosynthetically active radiation; PCC, percent of canopy coverage; RUE, radiation use efficiency; TWI, total water inputKanchana ChomsangMasahiro MorokumaSakae AgarieMasanori ToyotaTaylor & Francis Grouparticleaboveground dry matterdrip irrigationevapotranspirationleaf area indexradiation use efficiencyseed yieldsoybeanPlant cultureSB1-1110ENPlant Production Science, Vol 24, Iss 4, Pp 466-480 (2021)
institution DOAJ
collection DOAJ
language EN
topic aboveground dry matter
drip irrigation
evapotranspiration
leaf area index
radiation use efficiency
seed yield
soybean
Plant culture
SB1-1110
spellingShingle aboveground dry matter
drip irrigation
evapotranspiration
leaf area index
radiation use efficiency
seed yield
soybean
Plant culture
SB1-1110
Kanchana Chomsang
Masahiro Morokuma
Sakae Agarie
Masanori Toyota
Effect of using drip irrigation on the growth, yield and its components of soybean grown in a low rainfall region in Japan
description Field experiments were carried out for 3 years to assess the effect of using drip irrigation on the growth and yield of two Japanese soybean cultivars in Kagawa Prefecture, which has the second-lowest rainfall in Japan. The treatments were drip irrigation (Drip) and rainfed (Rainfed) from the blooming stage to the full-seed stage. The largest seed yield was achieved in 2017, followed by 2018 and 2016. This order corresponded to the total water input (TWI, the sum of effective rainfall and irrigation) throughout cultivation. TWI was the main factor affecting the variation of yield and its components among years. Similarly, the higher TWI in Drip than in Rainfed contributed to the higher yield in Drip than in Rainfed within each year. ANOVA detected a significant effect of drip irrigation on total seed yield, above-ground dry matter (AGDM) at maturity, and numbers of branches, nodes, and fertile pods. AGDM had a significant correlation with the mean crop growth rate (CGR) during the treatment, and CGR was closely correlated with the mean net assimilation rate (NAR). Significant positive correlation among NAR, radiation use efficiency, and leaf water potential suggested that drip irrigation prevented the decrease of plant water status that contributed to maintain dry matter production. The advantage of using drip irrigation for soybean cultivation at the experiment site would be suppressing the decrease in yield in years with low rainfall rather than achieving higher yield than standard in years with normal or high rainfall. Abbreviations: AGDM, aboveground dry matter; CGR, crop growth rate; CISR, cumulative intercepted solar radiation; DAS, days after sowing; ETa, actual evapotranspiration; ETr, reference evapotranspiration; FIPAR, fraction of intercepted photosynthetically active radiation; LAI, leaf area index; ΨL, leaf water potential; mLAI, mean leaf area index; NAR, net assimilation rate; PAR, photosynthetically active radiation; PCC, percent of canopy coverage; RUE, radiation use efficiency; TWI, total water input
format article
author Kanchana Chomsang
Masahiro Morokuma
Sakae Agarie
Masanori Toyota
author_facet Kanchana Chomsang
Masahiro Morokuma
Sakae Agarie
Masanori Toyota
author_sort Kanchana Chomsang
title Effect of using drip irrigation on the growth, yield and its components of soybean grown in a low rainfall region in Japan
title_short Effect of using drip irrigation on the growth, yield and its components of soybean grown in a low rainfall region in Japan
title_full Effect of using drip irrigation on the growth, yield and its components of soybean grown in a low rainfall region in Japan
title_fullStr Effect of using drip irrigation on the growth, yield and its components of soybean grown in a low rainfall region in Japan
title_full_unstemmed Effect of using drip irrigation on the growth, yield and its components of soybean grown in a low rainfall region in Japan
title_sort effect of using drip irrigation on the growth, yield and its components of soybean grown in a low rainfall region in japan
publisher Taylor & Francis Group
publishDate 2021
url https://doaj.org/article/b2ab2599270e45ea94b2b0daecacecb7
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