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<p>The present study was conducted in the northern and central-western regions of Côte d’Ivoire, specifically in the localities of Bédiala and Dikodougou, over two consecutive years (2020 and 2021). This study aimed to assess the spatial arrangement impact on the optical properties and yields of cowpea and maize in an intercropping system. A randomized complete block design with four replications was used, comprising 28 treatments. The treatments was consisted of row intercropping and strip-intercropping. Cowpea and maize were sown simultaneously. The results showed differences in photosynthetically active radiation (PAR), leaf area index (LAI), and light use efficiency (εi). Intercropping cowpea varieties 1 or 2 with maize, in a single alternating row arrangement (N1MSI and N2MSI), showed high levels of leaf area index (LAI) and photosynthetically active radiation (PAR), thereby optimizing biomass production. Light use efficiency (εi) was particularly high for N2MSI, highlighting better conversion of light energy into biomass. The N1MSI and N2MSI treatments proved to be particularly effective, with higher yields for cowpea and maize over the two years of study (2020 and 2021). These results indicate that the N1MSI and N2MSI spatial arrangements maximize the synergy between PAR, LAI, and εi, promoting better light interception and utilization, optimal vegetative growth, and, consequently, increased yields. Managing spatial arrangements while balancing optical parameters is essential for sustainably improving cowpea and maize yields.</p>

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Influence of Spatial Arrangement on the Optical Properties and Yield of Cowpea and Maize in Intercropping Systems in Côte d’Ivoire

  • 期刊论文

  • 发表日期：

    2025年9月5日

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  • Yao Raymond Koffi,
  • Kouadio Ignace Kouassi,
  • Beket Severin Bonny,
  • Kouamé Kevin Koffi,
  • Bouma James Neya,
  • Irié Arsène Zoro Bi

摘要

The present study was conducted in the northern and central-western regions of Côte d’Ivoire, specifically in the localities of Bédiala and Dikodougou, over two consecutive years (2020 and 2021). This study aimed to assess the spatial arrangement impact on the optical properties and yields of cowpea and maize in an intercropping system. A randomized complete block design with four replications was used, comprising 28 treatments. The treatments was consisted of row intercropping and strip-intercropping. Cowpea and maize were sown simultaneously. The results showed differences in photosynthetically active radiation (PAR), leaf area index (LAI), and light use efficiency (εi). Intercropping cowpea varieties 1 or 2 with maize, in a single alternating row arrangement (N1MSI and N2MSI), showed high levels of leaf area index (LAI) and photosynthetically active radiation (PAR), thereby optimizing biomass production. Light use efficiency (εi) was particularly high for N2MSI, highlighting better conversion of light energy into biomass. The N1MSI and N2MSI treatments proved to be particularly effective, with higher yields for cowpea and maize over the two years of study (2020 and 2021). These results indicate that the N1MSI and N2MSI spatial arrangements maximize the synergy between PAR, LAI, and εi, promoting better light interception and utilization, optimal vegetative growth, and, consequently, increased yields. Managing spatial arrangements while balancing optical parameters is essential for sustainably improving cowpea and maize yields.