Occurrence of oidium in cowpea influenced by cropping system and planting season.

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dc.contributorLAYANA ALVES DO NASCIMENTO, UNIVERSIDADE ESTADUAL DE FEIRA DE SANTANA; JULIANE RAFAELE ALVES BARROS, FUNDAÇÃO DE AMPARO À CIÊNCIA E TECNOLOGIA DO ESTADO DE PERNAMBUCO; JADSON LIMA DA SILVA, UNIVERSIDADE DE PERNAMBUCO; EMILIA HAMADA, CNPMA; NATONIEL FRANKLIN DE MELO, CPATSA; FRANCISLENE ANGELOTTI, CPATSA.
dc.creatorNASCIMENTO, L. A. do
dc.creatorBARROS, J. R. A.
dc.creatorSILVA, J. L. da
dc.creatorHAMADA, E.
dc.creatorMELO, N. F. de
dc.creatorANGELOTTI, F.
dc.date2026-06-01T17:48:48Z
dc.date2026-06-01T17:48:48Z
dc.date2026-06-01
dc.date2026
dc.date.accessioned2026-07-07T06:02:03Z
dc.descriptionCowpea (Vigna unguiculata (L.) Walp.) is a crop of major importance in semiarid regions, where powdery mildew can significantly reduce productivity. This study evaluated powdery mildew severity in four cowpea cultivars grown under monocropping and intercropping with two biomass sorghum (Sorghum bicolor (L.) Moench) across two planting seasons (June and December 2021) under semiarid conditions. The experiment was conducted in a randomized complete block design arranged in a 12 & times; 2 factorial scheme with three replications, and disease severity was assessed at the R9 stage by means of the percentage of leaf area affected. Planting season significantly affected disease severity, and a significant season & times; treatment interaction was detected, indicating that the effects of cultivar and cropping system depended on planting season. Disease severity was higher in the June planting, whereas December planting reduced severity by 69.60%. Intercropping reduced disease severity for most cultivars during the June planting. Monocropping systems showed higher grain yield due to greater plant density, averaging 2.11 and 2.29 t ha- 1 in June and December planting, respectively, while intercropping averaged 1.15 and 1.22 t ha- 1. However, intercropped cowpea maintained stable productivity per plant despite a 50% reduction in plant density. These results demonstrate that adjusting planting date and adopting intercropping with adapted cultivars can simultaneously reduce powdery mildew severity and maintain productive stability in semiarid cowpea systems.
dc.identifierAgronomy Journal, v. 118, n. 2, e70393, 2026.
dc.identifierhttp://www.alice.cnptia.embrapa.br/alice/handle/doc/1187285
dc.identifierhttps://doi.org/10.1002/agj2.70393
dc.identifier.urihttp://hdl.handle.net/123456789/504841
dc.languageeng
dc.rightsopenAccess
dc.subjectFeijão caupi
dc.subjectFeijão
dc.subjectDoença
dc.subjectOídio
dc.subjectSistema de Cultivo
dc.subjectConsorciação de Cultura
dc.subjectVigna Unguiculata
dc.subjectSorgo
dc.subjectCowpeas
dc.titleOccurrence of oidium in cowpea influenced by cropping system and planting season.
dc.typeArtigo de periódico

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