Strip-width determines competitive strengths and grain yields of intercrop species in relay intercropping system

Abstract Maize/soybean relay intercropping system (MSR) is a popular cultivation method to obtain high yields of both crops with reduced inputs. However, in MSR, the effects of different strip widths on competitive strengths and grain yields of intercrop species are still unclear. Therefore, in a tw...

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Autores principales:	Muhammad Ali Raza, Liang Cui, Ruijun Qin, Feng Yang, Wenyu Yang
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2020
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/6a56cfa5300a468cafed194927b05f92
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spelling	oai:doaj.org-article:6a56cfa5300a468cafed194927b05f922021-12-02T12:42:19ZStrip-width determines competitive strengths and grain yields of intercrop species in relay intercropping system10.1038/s41598-020-78719-y2045-2322https://doaj.org/article/6a56cfa5300a468cafed194927b05f922020-12-01T00:00:00Zhttps://doi.org/10.1038/s41598-020-78719-yhttps://doaj.org/toc/2045-2322Abstract Maize/soybean relay intercropping system (MSR) is a popular cultivation method to obtain high yields of both crops with reduced inputs. However, in MSR, the effects of different strip widths on competitive strengths and grain yields of intercrop species are still unclear. Therefore, in a two-year field experiment, soybean was relay-intercropped with maize in three different strip-width arrangements (narrow-strips, 180 cm; medium-strips, 200 cm; and wide-strips, 220 cm), and all intercropping results were compared with sole maize (SM) and sole soybean (SS). Results showed that the optimum strip-width for obtaining high grain yields of maize and soybean was 200 cm (medium-strips), which improved the competitive-ability of soybean by maintaining the competitive-ability of maize in MSR. On average, maize and soybean produced 98% and 77% of SM and SS yield, respectively, in medium-strips. The improved grain yields of intercrop species in medium-strips increased the total grain yield of MSR by 15% and land equivalent ratio by 22%, which enhanced the net-income of medium-strips (by 99%, from 620 US $ ha−1 in wide-strips to 1233 US $ ha−1 in medium-strips). Overall, these findings imply that following the optimum strip-width in MSR, i. e., strip-width of 200 cm, grain yields, and competitive interactions of intercrop species can be improved.Muhammad Ali RazaLiang CuiRuijun QinFeng YangWenyu YangNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 10, Iss 1, Pp 1-12 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Muhammad Ali Raza Liang Cui Ruijun Qin Feng Yang Wenyu Yang Strip-width determines competitive strengths and grain yields of intercrop species in relay intercropping system
description	Abstract Maize/soybean relay intercropping system (MSR) is a popular cultivation method to obtain high yields of both crops with reduced inputs. However, in MSR, the effects of different strip widths on competitive strengths and grain yields of intercrop species are still unclear. Therefore, in a two-year field experiment, soybean was relay-intercropped with maize in three different strip-width arrangements (narrow-strips, 180 cm; medium-strips, 200 cm; and wide-strips, 220 cm), and all intercropping results were compared with sole maize (SM) and sole soybean (SS). Results showed that the optimum strip-width for obtaining high grain yields of maize and soybean was 200 cm (medium-strips), which improved the competitive-ability of soybean by maintaining the competitive-ability of maize in MSR. On average, maize and soybean produced 98% and 77% of SM and SS yield, respectively, in medium-strips. The improved grain yields of intercrop species in medium-strips increased the total grain yield of MSR by 15% and land equivalent ratio by 22%, which enhanced the net-income of medium-strips (by 99%, from 620 US $ ha−1 in wide-strips to 1233 US $ ha−1 in medium-strips). Overall, these findings imply that following the optimum strip-width in MSR, i. e., strip-width of 200 cm, grain yields, and competitive interactions of intercrop species can be improved.
format	article
author	Muhammad Ali Raza Liang Cui Ruijun Qin Feng Yang Wenyu Yang
author_facet	Muhammad Ali Raza Liang Cui Ruijun Qin Feng Yang Wenyu Yang
author_sort	Muhammad Ali Raza
title	Strip-width determines competitive strengths and grain yields of intercrop species in relay intercropping system
title_short	Strip-width determines competitive strengths and grain yields of intercrop species in relay intercropping system
title_full	Strip-width determines competitive strengths and grain yields of intercrop species in relay intercropping system
title_fullStr	Strip-width determines competitive strengths and grain yields of intercrop species in relay intercropping system
title_full_unstemmed	Strip-width determines competitive strengths and grain yields of intercrop species in relay intercropping system
title_sort	strip-width determines competitive strengths and grain yields of intercrop species in relay intercropping system
publisher	Nature Portfolio
publishDate	2020
url	https://doaj.org/article/6a56cfa5300a468cafed194927b05f92
work_keys_str_mv	AT muhammadaliraza stripwidthdeterminescompetitivestrengthsandgrainyieldsofintercropspeciesinrelayintercroppingsystem AT liangcui stripwidthdeterminescompetitivestrengthsandgrainyieldsofintercropspeciesinrelayintercroppingsystem AT ruijunqin stripwidthdeterminescompetitivestrengthsandgrainyieldsofintercropspeciesinrelayintercroppingsystem AT fengyang stripwidthdeterminescompetitivestrengthsandgrainyieldsofintercropspeciesinrelayintercroppingsystem AT wenyuyang stripwidthdeterminescompetitivestrengthsandgrainyieldsofintercropspeciesinrelayintercroppingsystem
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Strip-width determines competitive strengths and grain yields of intercrop species in relay intercropping system

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