Manejo de plantas daninhas em cana-crua

Ferreira, Evander Alves; Procópio, S.O.; Galon, Leandro; França, André Cabral; Concenço, Germani; Silva, A.A; Aspiazú, Ignácio; Silva, A.F; Tironi, Siumar Pedro; Rocha, Paulo Roberto Ribeiro

doi:10.1590/s0100-83582010000400025

Cited by 40 publications

(43 citation statements)

References 25 publications

(24 reference statements)

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“…These results corroborate the reports by Ferreira et al (2015) and Cobucci et al (2004), which consider that on the "rainy" crops, the problems related to weeds are higher, especially due to the climatic conditions with high water availability, allied to the high incidence of solar radiation, which favors the development of plants with a C4 photosynthesis metabolism, as the species found on the situation shown herein.…”

Section: (A) (B)supporting

confidence: 93%

“…These characteristics make them very sensitive to the competition with weeds. This sensitivity and the management of weed infestations vary a lot according to the characteristics of the culture regions, with yield losses due to lack of information (Azevedo, et al, 2007;Ferreira et al, 2015). In terms of productivity, the reduction due to the competition with weeds may exceed 80% (Azevedo et al, 2007), justifying the high costs for farmers in the control of weeds, above all for the common bean culture.…”

Section: Introductionmentioning

confidence: 99%

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Phytosociological Survey of Weed Plants in Intercrops of Common Beans and Castor Beans

et al. 2017

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-The aim of this paper was to conduct the phytosociological survey of weeds in cultivated areas with common beans and castor beans in the municipality of Ipameri, in the Southeast region of the State of Goiás, considering intercropping and monoculture. The survey was conducted 20 days after emergence of the crop using the square inventory method. We evaluated the green and dry biomass of weeds, their leaf area, frequencies, density and absolute and relative dominance, relative importance and similarity index, expressed as a percentage. Sixteen weed species were identified, distributed into 10 botanical families. The most important weed species in the Southeast region of Goiás for the cultivation of common beans and castor beans were: Cenchrus echinatus, Euphorbia heterophylla, Alternanthera tenella, Eleusine indica and Urochloa decumbens. The weed community shows a high level of similarity between intercropping and monoculture for castor bean and common bean crops. Keywords: Phaseolus vulgaris, Ricinus communis, intercropping, phytosociology. RESUMO -Objetivou-se com este trabalho realizar o levantamento fitossociológico de plantas daninhas em área cultivadas com feijão e mamona no município de

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Section: (A) (B)supporting

confidence: 93%

Section: Introductionmentioning

confidence: 99%

Phytosociological Survey of Weed Plants in Intercrops of Common Beans and Castor Beans

et al. 2017

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“…Em todos os casos, o sulcamento e a semeadura do feijoeiro foram manuais. No plantio das águas, o feijão intercalado foi capinado manualmente, enquanto na seca, procedeu-se o controle químico das plantas daninhas com a aplicação direcionada de fomesafen + fluazifop-butil, em pós-emergência, na dosagem de 1 L do produto comercial Robust por hectare (Ferreira et al, 1998). As plantas de cafeeiro recepado, tanto no consórcio quanto no monocultivo, passaram por duas operações de desbrota, aproximadamente aos 90 e 150 dias após a recepa, de maneira a deixar apenas um broto por planta.…”

Section: Methodsunclassified

Sistemas de produção de feijão intercalado com cafeeiro adensado em período de formação ou após recepa

et al. 2010

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Production systems of bean intercropped with establishing coffee crop or after stumpingIntercropping of annual crops with coffee crop has been used since the introduction of coffee cultivation in Brazil. However, the last available results have been obtained with old cultivars and exceeded distance between lines. Aiming to study the effect of row numbers and NPK doses applied to bean intercropped with coffee trees, two field experiments were conducted at the Federal University of Lavras. The experiments were carried out in two commercial coffee crops: establishing cv. Topázio and cv. Acaiá stumped at 40 cm from the soil level. Both coffee crops were intercropped with bean in the dry and the rainy seasons. The experiments were arranged in randomized blocks design, with three replicates and a 4 x 4 + 1 factorial scheme, involving four numbers of intercalar rows of bean (one, two, three and four

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“…One of the main changes occurred in the management of weeds (Ferreira et al, 2010;Azania et al, 2011). The permanence of a dense straw on soil significantly changed the composition of sugarcane weed community (Azania et al, 2008(Azania et al, , 2009(Azania et al, , 2011.…”

Section: Introductionmentioning

confidence: 99%

Period prior to interference of morning glory in sugarcane

Piza¹,

Nepomuceno

Alves

2016

Científica

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Sugarcane had great change in its production environment with the adoption of mechanized harvesting, highlighting the increasing importance of morning glory, for which there is no information about its interference in sugarcane cycle. The aim of this study was to determine the period prior to interference (PPI) of a weed community with predominance of Ipomoea hederifolia on sugarcane 'SP81-3250' in sugarcane plant cycle and its effect on technological parameters. Treatments consisted of increasing coexistence periods at the early of the cycle: 0, 0-15, 0-30, 0-45, 0-60, 0-75, 0-90, 0-120, 0-150, 0-180, 0-210, 0-270, 0-330 days after emergency. A randomized block design with four replications was used. Phytosociological analysis of weed community was performed, which confirmed morning glory dominance in the community and PPI obtained was 76 days after emergence, with a level of 5% of acceptable loss. The yield loss of industrialized stems due to morning glory interference was 17.5%. There was no change of sugarcane technological parameters.Additional keywords: competition; Ipomoea hederifolia; periods of interference; Saccharum spp. ResumoA cana-de-açúcar sofreu grande alteração em seu ambiente de produção com a adoção da colheita mecanizada, destacando-se a crescente importância das cordas-de-viola, para as quais ainda não há informações sobre a interferência que podem exercer no ciclo de cana-planta. O objetivo deste trabalho foi determinar o período anterior à interferência (PAI) de uma comunidade infestante com predominância de Ipomoea hederifolia sobre cana-de-açúcar 'SP81-3250' no ciclo de cana-planta e seus efeitos sobre os parâmetros tecnológi-cos. Os tratamentos experimentais constaram de períodos crescentes de convivência no início do ciclo, a saber: 0, 0-15, 0-30, 0-45, 0-60, 0-75, 0-90, 0-120, 0-150, 0-180, 0-210, 0-270, 0-330 dias após a emergência. Foi utilizado delineamento blocos ao acaso com quatro repetições. Foi realizada análise fitossociológica da comunidade de plantas daninhas, que confirmou a predominância de corda-de-viola na comunidade e o PAI obtido foi de 76 dias após a emergência, com um nível de 5% de perda aceitável. A perda de produtividade de colmos industrializáveis devido à interferência da corda-de-viola foi de 17,5%. Não houve alteração dos parâ-metros tecnológicos da cana-de-açúcar.Palavras-chave adicionais: competição; Ipomoea hederifolia; períodos de interferência; Saccharum spp.

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Manejo de plantas daninhas em cana-crua

Cited by 40 publications

References 25 publications

Phytosociological Survey of Weed Plants in Intercrops of Common Beans and Castor Beans

Phytosociological Survey of Weed Plants in Intercrops of Common Beans and Castor Beans

Sistemas de produção de feijão intercalado com cafeeiro adensado em período de formação ou após recepa

Period prior to interference of morning glory in sugarcane

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