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The importance of aboveground and belowground interspecific interactions in determining crop growth and advantages of peanut/maize intercropping

Jiao, Nianyuan and Wang, Jiangtao and Ma, Chao and Zhang, Chaochun and Guo, Dayong and Zhang, Fusuo and Jensen, Erik Steen (2021). The importance of aboveground and belowground interspecific interactions in determining crop growth and advantages of peanut/maize intercropping. . 9 :6 , 1460-1469
[Research article]

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Abstract

Intercropping of maize (Zea mays L.) and peanut (Arachis hypogaea L.) often results in greater yields than the respective sole crops. However, there is limited knowledge of aboveground and belowground interspecific interactions between maize and peanut in field. A two-year field experiment was conducted to investigate the effects of interspecific interactions on plant growth and grain yield for a peanut/maize intercropping system under different nitrogen (N) and phosphorus (P) levels. The method of root separation was employed to differentiate belowground from aboveground interspecific interactions. We observed that the global interspecific interaction effect on the shoot biomass of the intercropping system decreased with the coexistence period, and belowground interaction contributed more than aboveground interaction to advantages of the intercropping in terms of shoot biomass and grain yield. There was a positive effect from aboveground and belowground interspecific interactions on crop plant growth in the intercropping system, except that aboveground interaction had a negative effect on peanut during the late coexistence period. The advantage of intercropping on grain came mainly from increased maize yield (means 95%) due to aboveground interspecific competition for light and belowground interaction (61%72% vs. 28%-39% in fertilizer treatments). There was a negative effect on grain yield from aboveground interaction for peanut, but belowground interspecific interaction positively affected peanut grain yield. The supply of N, P, or N + P increased grain yield of intercropped maize and the contribution from aboveground interspecific interaction. Our study suggests that the advantages of peanut/maize intercropping for yield mainly comes from aboveground interspecific competition for maize and belowground interspecific facilitation for peanut, and their respective yield can be enhanced by N and P. These findings are important for managing the intercropping system and optimizing the benefits from using this system. (C) 2021 Crop Science Society of China and Institute of Crop Science, CAAS. Production and hosting by Elsevier B.V. on behalf of KeAi Communications Co., Ltd.

Authors/Creators:Jiao, Nianyuan and Wang, Jiangtao and Ma, Chao and Zhang, Chaochun and Guo, Dayong and Zhang, Fusuo and Jensen, Erik Steen
Title:The importance of aboveground and belowground interspecific interactions in determining crop growth and advantages of peanut/maize intercropping
Year of publishing :2021
Volume:9
Number:6
Page range:1460-1469
Number of Pages:10
Publisher:KEAI PUBLISHING LTD
Language:English
Publication Type:Research article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution-Noncommercial-No Derivative Works 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 401 Agricultural, Forestry and Fisheries > Agricultural Science
Keywords:Peanut/maize intercropping, Aboveground interspecific competition, Belowground interspecific facilitation, Nitrogen and phosphorus, Advantage of intercropping
URN:NBN:urn:nbn:se:slu:epsilon-p-116313
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-116313
Additional ID:
Type of IDID
DOI10.1016/j.cj.2020.12.004
Web of Science (WoS)000752819500013
ID Code:27326
Faculty:LTV - Fakulteten för landskapsarkitektur, trädgårds- och växtproduktionsvetenskap
Department:(LTJ, LTV) > Department of Biosystems and Technology (from 130101)
Deposited By: SLUpub Connector
Deposited On:17 Mar 2022 09:25
Metadata Last Modified:17 Mar 2022 09:31

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