Strategies to terminate summer cover crops for weed management in no-tillage vegetable production in southeast Brazil

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dc.contributor.authorBranco, Roberto Botelho Ferraz
dc.contributor.authorDe Carvalho, Fernando
dc.contributor.authorOliveira, João Paulo
dc.contributor.authorDa Costa Alves, Pedro Luis [UNESP]
dc.contributor.institutionAgronomic Institute
dc.contributor.institutionUniversity Moura Lacerda
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.date.accessioned2022-04-28T19:43:39Z
dc.date.available2022-04-28T19:43:39Z
dc.date.issued2022-01-19
dc.description.abstractCover crop residue left on the soil surface as organic mulch in no-tillage crop production provides several environmental benefits, including weed suppression. Thus, many farmers who use cover crops attempt to reduce the use of agricultural inputs, especially herbicides. Therefore, our objectives were to study the potential of different cover crop species to suppress weeds and produce an in situ organic mulch and to evaluate the effect of the organic mulch with and without spraying glyphosate on weed suppression for vegetable (tomato [Solanum lycopersicum L.] and broccoli [Brassica oleracea L. var. botrytis]) growth and yield. Five cover crop treatments (sunn hemp [Crotalaria juncea L.], jack bean [Canavalia ensiformis (L.) DC.], pearl millet [Pennisetum glaucum (L.) R. Br.], forage sorghum [Sorghum bicolor (L.) Moench ssp. bicolor], and no cover crop [control]) were used in the main plots; and glyphosate was or was not sprayed on the flattened cover crop in the subplots of this split-plot experimental design. Organic mulch from pearl millet, sorghum, and sunn hemp resulted in lower weed biomass during the early seasons of both tomato and broccoli than mulch from jack bean and no cover crop (control). Spraying glyphosate after roller-crimping reduced weed biomass by 103 g m-2 and 20 g m-2 by 45 and 60 d after transplanting (DATr) of tomato, respectively, and resulted in a better tomato yield compared with not spraying. Glyphosate reduced weed biomass by 110 g m-2 in the early season of broccoli (30 DATr) but did not affect yield. Terminating high-biomass cover crops with a roller-crimper is a promising technique for weed management in vegetable crops that has the potential to reduce or even eliminate the need for herbicide.en
dc.description.affiliationAgronomic Institute Department of Horticulture (IAC/APTA), Ribeirao Peto SP
dc.description.affiliationAgronomy College University Moura Lacerda, SP
dc.description.affiliationSão Paulo State University (UNESP) School of Agricultural and Veterinarian Sciences Department of Biology Applied to Agriculture, SP
dc.description.affiliationUnespSão Paulo State University (UNESP) School of Agricultural and Veterinarian Sciences Department of Biology Applied to Agriculture, SP
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.format.extent112-119
dc.identifierhttp://dx.doi.org/10.1017/wsc.2021.58
dc.identifier.citationWeed Science, v. 70, n. 1, p. 112-119, 2022.
dc.identifier.doi10.1017/wsc.2021.58
dc.identifier.issn1550-2759
dc.identifier.issn0043-1745
dc.identifier.scopus2-s2.0-85113370582
dc.identifier.urihttp://hdl.handle.net/11449/222269
dc.language.isoeng
dc.relation.ispartofWeed Science
dc.sourceScopus
dc.subjectBrassica oleracea var. italica Plenck
dc.subjectGlyphosate
dc.subjectOrganic mulching
dc.subjectRoller-crimper
dc.subjectSolanum lycopersicum L.
dc.subjectWeed suppression
dc.titleStrategies to terminate summer cover crops for weed management in no-tillage vegetable production in southeast Brazilen
dc.typeArtigo

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