Interferência De Plantas De Cobertura Sobre a Incidência De Plantas Invasoras E a Produção De Cebola Sob Sistema De Plantio Direto

Vilanova, Cintia de Camargo; Comin, Jucinei José; Kürtz, Claudinei; Júnior, Vilmar Müller; Uriarte, Julio Francisco; Ventura, Bárbara Santos; Souza, Monique; Lovato, Paulo Emílio; Leguizamón, E. S.; Brunetto, Gustavo

doi:10.5380/rsa.v15i1.41092

Cited by 5 publications

(5 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…O centeio é uma espécie com grande potencial para uso em cobertura de solo. Vilanova et al (2014), avaliando a interferência de plantas de cobertura sobre a incidência de plantas invasoras e a produção de cebola sob sistema de plantio direto, verificaram menor produção de matéria seca de plantas invasoras, com uso de centeio associado a nabo forrageiro para cobertura do solo. Além disso, plantas de centeio promovem maior agregação de solo e estruturação (MOORE et al 2014) e retenção de água (BASCHE et al 2016).…”

Section: Introductionunclassified

Efeito Alelopático De Centeio Na Germinação E Crescimento De Plântulas De Beterraba

Martinelli¹,

Silva²

2018

Agrarian

View full text Add to dashboard Cite

RESUMO A alelopatia pode inibir ou estimular o desenvolvimento de plantas. O uso de plantas para cobertura do solo pode resultar em efeitos alelopáticos na germinação e desenvolvimento de plântulas através da liberação de metabólitos secundários (aleloquímicos). Assim, o presente trabalho teve por objetivo verificar se o extrato de centeio exerce ação alelopática na germinação e crescimento de plântulas de beterraba. O delineamento experimental utilizado foi inteiramente casualizado, em esquema fatorial 2 x 4 (cultivares x concentrações), com cinco repetições. Foram utilizadas sementes de beterraba, das cultivares Early Wonder e Vermelha Comprida. Os extratos foram preparados utilizando-se plantas inteiras de centeio crioulo, nas concentrações de 0 (testemunha), 25, 50 e 100%. As sementes foram acondicionadas em caixas plásticas do tipo gerbox, com papel germitest umedecido com os extratos. As variáveis analisadas foram: porcentagem de germinação, de sementes não germinadas e plântulas anormais, índice de velocidade de geminação, comprimento de parte aérea e de raízes de plântulas, e massa seca da parte aérea e de raízes das plântulas. Os dados obtidos foram submetidos à análise de variância e quando esta foi significativa procedeu-se à análise de regressão. O extrato de centeio interferiu de forma negativa na germinação de sementes de beterraba. O crescimento de plântulas de beterraba é afetado pelo extrato de centeio, com efeito variável em função da cultivar. PALAVRAS CHAVE: Alelopatia. Beta vulgaris. Secale cereale.

show abstract

Section: Introductionunclassified

Efeito Alelopático De Centeio Na Germinação E Crescimento De Plântulas De Beterraba

Martinelli¹,

Silva²

2018

Agrarian

View full text Add to dashboard Cite

show abstract

“…Souza et al (2018) evaluated different cover crops under NTVS and found a higher weed suppression with rye, barley, or black oats, especially at the beginning of the onion cycle, when there is more competition by weeds. In another work carried out in the same area of our study, the treatments with oilseed radish, rye, or oilseed radish + rye had the highest cover crops yield, which resulted in lower weed dry matter at the beginning of the onion crop cycle (Vilanova et al 2014).…”

Section: Introductionmentioning

confidence: 48%

“…Cover crop species improve soil physical and chemical attributes in onion fields (Loss et al, 2017;Comin et al, 2018a;Santos et al, 2018;Ferreira et al, 2018) as well as soil biological properties (Silva et al, 2014). They also lead to lower weed emergence, affecting onion yield and quality (Vilanova et al, 2014;Oliveira et al, 2016;Comin et al, 2018b;Souza et al, 2018). However, successive onion crops can affect soil characteristics, which requires evaluating the long-term effects of soil management systems.…”

Section: Introductionmentioning

confidence: 99%

Soil Carbon, Glomalin, And Aggregation in Onion Crop Under No-Tillage with Cover Crops or Conventional Tillage Systems for Eight Years

Bortolini

Soares

Muller

et al. 2022

JAS

Self Cite

View full text Add to dashboard Cite

Crop systems using cover crops affect soil physical, chemical, and biological attributes, including aggregate formation. This work aims to evaluate winter cover crop species' effect on soil total organic carbon, glomalin, and aggregation in areas with onion crops in a no-tillage vegetable production system (NTVS) and conventional tillage system (CTS) for eight years. The experiment treatments were: control, with natural vegetation(NV); black oats (Avena strigosa); rye(Secale cereale);oilseed radish(Raphanus sativus);intercropped black oats and oilseed radish; intercropped rye and oilseed radish; and a conventional tillage systems area. A 33-year old adjacent secondary forest was evaluated as a reference for undisturbed conditions. We assessed soil total organic carbon, total glomalin, and easily extractable glomalin in three soil layers (0-5, 5-10, and 10-20 cm depth). Undisturbed samples were used to quantify soil aggregate stability, aggregation indexes (weighted mean diameter; geometric mean diameter), aggregate mass distribution (macroaggregates, mesoaggregates), and macroaggregate carbon contents. The conventional tillage areas had the lowest weighted mean soil aggregate diameter, geometric mean diameter, and macroaggregate mass. Those areas also had the lowest bulk soil and aggregate organic carbon contents and the lowest total and easily extractable glomalin. Winter cover crops' use resulted in a 10% higher aggregate weighted mean diameter and geometric mean diameter. Areas with cover crops had 13% higher organic carbon contents in aggregates and 17% higher macroaggregate mass than conventional tillage areas. The highest values of total and easily extracted glomalin occurred in plots with black oats. Winter cover crops, single or intercropped, improved physical attributes of soils with onion crops under not-tillage compared to conventional tillage areas.

show abstract

“…In this case, the persistence of radish dry matter on the soil was favored by the presence of grasses, such as rye, which contributed to a slower decomposition, probably due to the increase in the C/N ratio of the plant residue formed on the soil (Oliveira et al, 2016), hindering the emergence of weeds. In studies conducted by Vilanova et al (2014) in field experiments, it was observed that the lowest dry matter productions of spontaneous plants during the onion cycle in 2009 occurred in the intercropped radish + rye treatment during the first 30 evaluation days.…”

Section: Weed Emergence Dynamicsmentioning

confidence: 98%

Weed Emergence in a Soil with Cover Crops in an Agroecological No-Tillage System

et al. 2018

View full text Add to dashboard Cite

The cultivation and deposition of cover crops residues on the soil surface can reduce weed emergence. The objective of this study was to evaluate the emergence of weeds, in a greenhouse, on a soil with cover crops in an agroecological no-tillage system. The experiment was conducted in a greenhouse with soil samples from an experiment installed in Ituporanga (Santa Catarina state). On April 2010 and 2011, the following field treatments were implemented: weed vegetation (VE), Hordeum vulgare (2010)/Avena strigosa (2011) (CV/AV), Secale cereale (CE), Raphanus sativus (NF), Secale cereale + Raphanus sativus (NF+CE) and Hordeum vulgare/Avena strigosa + Raphanus sativus (NF+AV). After the rotation of the species, the soil samples were collected in July. The identification of the species and the emergence assessment occurred 15, 30, 45, 60, 75, 90 and 105 days after the beginning of the experiment. The species with the highest incidence were: Amaranthus lividus, Oxalis spp., Cyperus spp., Stachys arvensis, Cynodon spp. and Rumex obtusifolius. Residues from single species of Secale cereale, Avena strigosa and Hordeum vulgare have shown the greatest ability to suppress weeds during the first 45 evaluation days; this corresponds to the beginning of the critical period in the onion development.

show abstract

Interferência De Plantas De Cobertura Sobre a Incidência De Plantas Invasoras E a Produção De Cebola Sob Sistema De Plantio Direto

Cited by 5 publications

References 13 publications

Efeito Alelopático De Centeio Na Germinação E Crescimento De Plântulas De Beterraba

Efeito Alelopático De Centeio Na Germinação E Crescimento De Plântulas De Beterraba

Soil Carbon, Glomalin, And Aggregation in Onion Crop Under No-Tillage with Cover Crops or Conventional Tillage Systems for Eight Years

Weed Emergence in a Soil with Cover Crops in an Agroecological No-Tillage System

Contact Info

Product

Resources

About