Allelopathy for weed control in agricultural systems

Jabran, Khawar; Mahajan, Gulshan; Sardana, Virender; Chauhan, Bhagirath Singh

doi:10.1016/j.cropro.2015.03.004

Cited by 488 publications

(282 citation statements)

References 79 publications

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“…Além disso, algumas espécies de coberturas mortas quando em decomposição pode liberar aleloquímicos, que, por sua vez, exercem influência sobre a germinação e desenvolvimento das plantas daninhas (FAROOQ et al, 2011;JABRAN et al, 2015;MORAES et al, 2013;SADEGHPOUR et al, 2014;ZANUNCIO et al, 2013;ZHANG et al, 2016). Tais efeitos foram encontrados, por exemplo, em mucunapreta (Mucuna aterrima) que apresentou o maior efeito alelopático sobre a biomassa seca, número e porcentagem de germinação de tubérculos de tiririca (ZANUNCIO et al, 2013).…”

Section: Introductionunclassified

“…Zhang et al (2016) inferem que as atividades alelopáticas são determinadas pela especificidade entre as plantas daninhas, e envolvem um amplo espectro de espécies de forma independente, ou em sinergia com fatores competitivos. Ressalta-se que o contato e a liberação dos aleloquímicos também podem ser facilitados por microrganismos de modo que os aleloquímicos promoveriam as atividades dos microrganismos do solo favorecendo as plantas cultivadas (JABRAN et al, 2015).…”

Section: Introductionunclassified

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Winter mulches and chemical control on weeds in maize

Martins

Gonçalves

Silva

2016

Revista Ciência Agronômica

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As subparcelas em número de três, foram compostas por: 1 -pulverização apenas de herbicida de manejo antes da semeadura do milho; 2 -herbicida de manejo após a semeadura do milho + herbicida residual, e 3 -testemunha sem aplicação de herbicidas. As coberturas mortas de aveia-preta e nabo-forrageiro proporcionam as menores densidades de plantas daninhas e acúmulos de massa seca da comunidade infestante, independente da aplicação ou não de herbicidas. Houve uma maior germinação de B. pilosa nas parcelas mantidas com a cobertura de tremoço, com exceção das subparcelas onde se aplicou herbicida em pré-emergência, o que evidencia um efeito estimulante da cobertura morta. O emprego de algumas espécies na formação da cobertura morta para o plantio direto pode dispensar ou reduzir a quantidade de herbicidas necessária para o controle das plantas daninhas. Palavras-chave:Herbicida. Plantio direto. Resíduo vegetal. Rotação de culturas. Zea mays L.. ABSTRACT -The correct choice of cover crops improves the sustainability of a farming system, as it can enhance the use of herbicides, reduce weed infestation and improve crop performance. With the aim of studying the effect of winter mulches and the use of herbicides on a community of weeds in maize, a study was carried out in a completely randomised design where the treatments were arranged in a scheme of split lots with four replications. The lots, six in number, comprised the following winter crops: Lupinus albus, sativos Lathyrus, Triticum aestivum, Avena strigosa, Raphanus sativus, and a control kept fallow. The three sub-lots comprised, 1 -spraying the management herbicide before sowing the maize, 2 -management herbicide after sowing the maize + residual herbicide, and 3 -control without the application of herbicide. Mulches of black oat and forage turnip gave the lowest weed densities and accumulations of dry weight in the weed community, irrespective of the application of herbicide. There was greater germination of B. pilosa in the lots maintained with a cover of lupins, with the exception of those sub-lots where herbicide was applied pre-emergence, demonstrating the stimulating effect of mulch. The use of certain species in the formation of mulch under direct planting can dispense with or reduce the amount of herbicides needed for weed control.

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Section: Introductionunclassified

Winter mulches and chemical control on weeds in maize

Martins

Gonçalves

Silva

2016

Revista Ciência Agronômica

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“…Understanding allelopathy is helpful for planning and managing cropping systems (Gronle et al 2015). Reduced weed infestation in CA can be achieved with proper weed-suppressive cover crops (Altieri et al 2011;Jabran et al 2015;Nichols et al 2015), or via the use of allelopathic crop cultivars (Balbinot Junior et al 2003;Nichols et al 2015) or consortium systems that involve potential allelopathic species. Highly productive crop rotations should consider crop species that are tolerant to the allelochemicals released from previous crops.…”

Section: The Use Of Allelopathy In Cropping Systemsmentioning

confidence: 99%

Allelopathy: driving mechanisms governing its activity in agriculture

Trezzi

Vidal

Balbinot

et al. 2016

Journal of Plant Interactions

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Allelopathy determines the dynamics of plant species in different environments. Understanding this biological phenomenon could help to develop applications in both natural and agricultural systems. This review summarizes the genetic and environmental characteristics that control the production and release of allelochemicals in agroecosystems. This study highlights the current understanding of the environmental changes caused by allelochemicals and summarizes the knowledge about the mechanisms of action of these compounds. Finally, it reviews novel applications of allelopathy in agricultural production systems, including the role of allelochemicals in consortia and their potential use in no-tillage cropping systems through cover crops or mulches.ARTICLE HISTORY

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“…Planted in the fall, well-managed cover crops outcompete weeds for resources during the winter and early spring, prior to the planting of a spring-seeded cash crop [28]. The allelopathic effects of some cover crops, cereal rye (Secale cereale) being a common example, also aid in controlling weeds in living mulch form [9,29] (p. 25). After termination, cover crop residues provide weed control throughout the growing season.…”

Section: Cover Crops As a Central Feature For Weed Managementmentioning

confidence: 99%

The Current State and Future Directions of Organic No-Till Farming with Cover Crops in Canada, with Case Study Support

Beach

Laing²,

Walle

2018

Sustainability

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Abstract:Eliminating regular tillage practices in agriculture has numerous ecological benefits that correspond to the intentions of organic agriculture; yet, more tillage is conducted in organic agriculture than in conventional agriculture. Organic systems face more management challenges to avoid tillage. This paper identifies factors to consider when implementing no-till practices particularly in organic agronomic and vegetable crop agriculture and describes techniques to address these factors. In some cases, future research is recommended to effectively address the current limitations. The format includes a literature review of organic no-till (OrgNT) research and two case studies of Ontario organic farmers that highlight no-till challenges and practices to overcome these challenges. Cover crops require significant consideration because they are the alternative to herbicides and fertilizers to manage weeds and provide nutrients in the OrgNT system. Equipment requirements have also proven to be unique in OrgNT systems. In the future, it is recommended that researchers involve organic farmers closely in studies on no-till implementation, so that the farmers' concerns are effectively addressed, and research is guided by possibilities recognized by the practitioners.

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Allelopathy for weed control in agricultural systems

Cited by 488 publications

References 79 publications

Winter mulches and chemical control on weeds in maize

Winter mulches and chemical control on weeds in maize

Allelopathy: driving mechanisms governing its activity in agriculture

The Current State and Future Directions of Organic No-Till Farming with Cover Crops in Canada, with Case Study Support

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