Manejo De Plantas Daninhas Em Soja Geneticamente Modificada Tolerante Ao Glyphosate

Correia, Núbia Maria; Durigan, Júlio Cézar; Espanhol, Melina

doi:10.5216/pat.v41i2.8807

Cited by 5 publications

(7 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…When palisade grass was cultivated alone, from April 2010 to November 2010, a reduction of the weed diversity was observed, according to the indices of Simpson and Shannon-Weiner (Table 2). Our results corroborate those obtained by Correia et al (2011), who concluded that grass straw can reduce the establishment of some weed species in the area.…”

Section: Resultssupporting

confidence: 92%

“…Systems like these may have potential to keep weed population below the economic damage level because of the control during the grasses development, characterizing a strategy of reducing but not eradicating weeds (Noce et al, 2008;Fontes et al, 2019). Correia et al (2011) described the effects of soil coverage by palisade grass on weed control, which contributes both to the reduction of chemical application and to the control of herbicide-resistant species, such as Digitaria spp. resistant to glyphosate.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Weed infestations in soybean grown in succession to cropping systems with sorghum and cover plants

Filho¹,

Carmona

Marchão

et al. 2020

Pesq. agropec. bras.

View full text Add to dashboard Cite

The objective of this work was to evaluate the influence of sorghum and cover plant cropping systems before soybean cultivation on the occurrence of weeds during soybean growing in the Brazilian Cerrado. The experiment was carried out in a randomized complete block design, with four replicates. The treatments comprised six cropping systems before soybean: sorghum (Sorghum bicolor), palisade grass (Urochloa brizantha), and Congo grass (Urochloa ruziziensis) as cover plants, alone or intercropped, in addition to fallowing. Weeds were evaluated as to: density, dry matter mass, diversity, importance value, and similarity. The greatest similarity of weeds ocurred in single crops of sorghum, palisade grass, and Congo grass, in comparison with their intercroppings. Congo grass before soybean promoted a greater reduction in weed diversity overtime, when compared with palisade grass. The absence of cover crops before soybean cultivation increased weed infestation during the soybean cycle. The cropping systems with sorghum intercropped with cover crops before the soybean cultivation affect the diversity and the importance value of weed species.

show abstract

Section: Resultssupporting

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Weed infestations in soybean grown in succession to cropping systems with sorghum and cover plants

Filho¹,

Carmona

Marchão

et al. 2020

Pesq. agropec. bras.

View full text Add to dashboard Cite

show abstract

“…The fallow treatment had the greatest number of viable seeds in the soil. According to Correia, Durigan and Espanhol (2011), allowing the development of spontaneous species during autumn/winter is responsible for the increase in the soil seed bank. Uncovered soil facilitates the ingress of weed diaspores, boosting infestation by the seeds of this type of plant, a process that is hampered by covering the area (SILVA; DIAS-FILHO, 2001).…”

Section: Resultsmentioning

confidence: 99%

“…Palisade grass is another option that can be grown in the short-season to cut weed infestations (BRAZ et al, 2006). Correia, Durigan and Espanhol (2011) reported the positive effect of using palisade grass residues to control weeds in succession cropping, mainly under no-tillage, in addition to chemical control. Another forage crop widely used in integrated systems is Congo grass, described by Adegas, Voll and Gazziero (2011) as an efficient competitor with weed species.…”

Section: Introductionmentioning

confidence: 99%

Weed dynamics in grain sorghum-grass intercropped systems

Filho¹,

Marchão²,

Carvalho³

et al. 2014

Rev. Ciênc. Agron.

View full text Add to dashboard Cite

The aim of this study was to assess the influence of short-season sorghum-grass intercropped systems on weed population dynamics. The integrated systems consisted of sorghum grown at two row spacings (0.50 m and 0.70 m), intercropped with palisade grass or Congo grass. We also used sole crops of sorghum, palisade grass, Congo grass and a fallow to serve as a reference for spontaneous vegetation. The experiment was conducted in 2010 and 2011 at Planaltina (Federal District) in Brazil. Weed populations and weed dry matter were assessed during the short season and during the succession soybean cycle. The weed soil seed bank was sampled in both years of the study. Sorghum at a row spacing of 0.50 m intercropped with Congo grass reduced the Ageratum conyzoides population. The Tridax procumbens seed bank in the soil was reduced by using sorghum at a the row spacing of 0.70 m, whether intercropped or not. Planting palisade grass during the short season reduced Digitaria sanguinalis in the soil seed bank. Planting palisade grass or Congo grass as a sole crop or intercropped reduced the number of weed seeds in the soil, showing that these species can be recommended for integrated weed management in intercropped systems.

show abstract

“…Por este motivo, é fundamental proceder ao controle das plantas voluntárias de milho na cultura da soja, sendo o método químico o mais utilizado, em função de características como facilidade e rápida execução, além de apresentar elevada eficácia (Correia et al, 2011). Dúvidas com relação ao estádio de aplicação mais apropriado, bem como mecanismos de ação de herbicidas que irão apresentar eficácia no controle de plantas voluntárias de milho, ainda existem, apesar de pesquisas já terem sido desenvolvidas com esse propósito (Costa et al, 2014;Petter et al, 2015;López-Ovejero et al, 2016).…”

unclassified

Controle Químico De Milho Resistente Ao Glyphosate Proveniente De Diferentes Híbridos

Braz¹,

Braz²,

Procópio³

et al. 2018

RBMS

View full text Add to dashboard Cite

RESUMO -As plantas voluntárias de milho podem causar perdas quando em convivência com outras culturas, tornando-se necessário proceder seu controle. Neste sentido, diferentes estratégias podem ser utilizadas, destacandose o manejo químico. O objetivo desse trabalho foi avaliar a suscetibilidade de híbridos de milho RR ® ao controle químico com aplicação de herbicidas em pós-emergência. O experimento foi conduzido em campo, utilizando-se o delineamento de blocos casualizados, em esquema de parcelas subdivididas, com quatro repetições. Na parcela principal foram avaliados oito tratamentos compostos pela aplicação de clethodim + glyphosate, quizalofop-p-ethyl + glyphosate, clodinafop + glyphosate, imazethapyr + glyphosate, [imazamox + bentazon] + glyphosate, cloransulan + glyphosate, glyphosate e testemunha sem aplicação. Nas subparcelas foram semeados nove híbridos de milho RR ® . Tratamentos contendo [imazamox + bentazon] ou cloransulan não foram eficientes no controle de plantas de milho RR ® em estádio V6. O imazethapyr associado ao glyphosate foi eficiente no controle de plantas de milho dos híbridos DKB390, SYN7025 e CD384, os quais mostram maior suscetibilidade a esse herbicida em comparação aos demais híbridos. Plantas provenientes de todos os híbridos avaliados, no estádio V6, podem ser totalmente controladas com a aplicação dos herbicidas quizalofop-p-ethyl, clodinafop e clethodim, contudo, clethodim apresentou ação mais lenta. Palavras-chave: herbicidas, plantas voluntárias, pós-emergência, Zea mays.ABSTRACT -Volunteer corn plants can cause high losses when in coexistence with other crops, making necessary its control. In this sense, different strategies can be used, emphasizing the chemical management. The objective of this work was to evaluate the susceptibility of RR ® corn hybrids to chemical control with post-emergence herbicides.The experiment was carried out at field, using a randomized complete block design in a split plots scheme, with four replications. In the main plot, eight treatments were evaluated using clethodim + glyphosate, quizalofop-p-ethyl + glyphosate, clodinafop + glyphosate, imazethapyr + glyphosate, [imazamox + bentazon] + glyphosate, cloransulan + glyphosate, glyphosate, and a control without herbicide application. In the subplots, nine RR ® corn hybrids were sown. Treatments with [imazamox + bentazon] and cloransulan were not efficient in the control of RR ® corn plants at V6 stage. The imazethapyr treatment associated to glyphosate was efficient in controlling the corn hybrids DKB390, SYN7025, and CD384, which showed greater susceptibility to this herbicide compared to the other hybrids evaluated. Plants of all evaluated hybrids can be controlled at V6 with the application of quizalofop-p-ethyl, clodinafop, and clethodim, however, clethodim presented slower action.

show abstract

Manejo De Plantas Daninhas Em Soja Geneticamente Modificada Tolerante Ao Glyphosate

Cited by 5 publications

References 5 publications

Weed infestations in soybean grown in succession to cropping systems with sorghum and cover plants

Weed infestations in soybean grown in succession to cropping systems with sorghum and cover plants

Weed dynamics in grain sorghum-grass intercropped systems

Controle Químico De Milho Resistente Ao Glyphosate Proveniente De Diferentes Híbridos

Contact Info

Product

Resources

About