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Seasonal Analysis of Yield and Loss Factors in Bt Soybean Crops in North Brazil

Author

Listed:
  • Poliana Silvestre Pereira

    (Graduate Programme in Plant Production, Federal University of Tocantins, Gurupi 77402-970, Tocantins, Brazil)

  • Abraão Almeida Santos

    (Department de Phytologie, Faculté des Sciences de l’Agriculture et de l’Alimentation, Université Laval, Quebec City, QC G1V 0A6, Canada)

  • Luciane Rodrigues Noleto

    (Graduate Programme in Plant Production, Federal University of Tocantins, Gurupi 77402-970, Tocantins, Brazil)

  • Juliana Lopes dos Santos

    (Graduate Programme in Biotechnology and Biodiversity, Rede Bionorte, Federal University of Tocantins, Palmas 77650-000, Tocantins, Brazil)

  • Mayara Moledo Picanço

    (Department of Entomology, Federal University of Viçosa, Viçosa 36570-900, Minas Gerais, Brazil)

  • Allana Grecco Guedes

    (Department of Entomology, Federal University of Viçosa, Viçosa 36570-900, Minas Gerais, Brazil)

  • Gil Rodrigues dos Santos

    (Graduate Programme in Plant Production, Federal University of Tocantins, Gurupi 77402-970, Tocantins, Brazil)

  • Marcelo Coutinho Picanço

    (Department of Entomology, Federal University of Viçosa, Viçosa 36570-900, Minas Gerais, Brazil)

  • Renato Almeida Sarmento

    (Graduate Programme in Plant Production, Federal University of Tocantins, Gurupi 77402-970, Tocantins, Brazil)

Abstract

Tropical crops face significant challenges from abiotic and biotic stressors, resulting in substantial losses. This study aimed to assess the yield and losses in Bt soybean crops in Tocantins state, northern Brazil, during the 2017/2018 and 2018/2019 growing seasons. We monitored and estimated yield losses and their contributing factors in commercial fields, spanning dry and rainy seasons, from planting to harvest. Our findings revealed that crop yields remained consistent between the dry season (4349.85 kg/ha) and the rainy season (4206.51 kg/ha). Similarly, the overall yield loss showed no significant variation between seasons, with values of 902.86 kg/ha (dry) and 1007.92 kg/ha (rainy). Nevertheless, the factors contributing to these losses exhibited season-dependent variations. We observed higher plant mortality rates during the dry season, whereas insects (particularly stink bugs) and fungi were the primary contributors to grain yield losses during the rainy season. Conversely, losses due to flower abortion and pod malformation remained relatively consistent between the two seasons. Our study underscores the increase in soybean yield in one of Brazil’s agricultural frontiers. While overall yield and losses remained stable between dry and rainy seasons, the distinct seasonal patterns influencing yield losses call for nuanced and season-specific strategies in sustainable crop management.

Suggested Citation

  • Poliana Silvestre Pereira & Abraão Almeida Santos & Luciane Rodrigues Noleto & Juliana Lopes dos Santos & Mayara Moledo Picanço & Allana Grecco Guedes & Gil Rodrigues dos Santos & Marcelo Coutinho Pic, 2024. "Seasonal Analysis of Yield and Loss Factors in Bt Soybean Crops in North Brazil," Sustainability, MDPI, vol. 16(3), pages 1-13, January.
    • Handle: RePEc:gam:jsusta:v:16:y:2024:i:3:p:1036-:d:1326367
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    References listed on IDEAS

    as
    1. Schimmelpfennig, David & Ebel, Robert, 2011. "On the Doorstep of the Information Age: Recent Adoption of Precision Agriculture," Economic Information Bulletin 291945, United States Department of Agriculture, Economic Research Service.
    2. Joana Colussi & Eric L. Morgan & Gary D. Schnitkey & Antônio D. Padula, 2022. "How Communication Affects the Adoption of Digital Technologies in Soybean Production: A Survey in Brazil," Agriculture, MDPI, vol. 12(5), pages 1-24, April.
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