Monitoramento do banco de sementes de plantas daninhas em áreas com Cana-de-Açúcar colhida mecanicamente

Monquero, Patrícia Andréa; Silva, P.V.; Hirata, Andréia Cristina Silva; Martins, Fernando Roberto

doi:10.1590/s0100-83582011000100013

Cited by 11 publications

(13 citation statements)

References 21 publications

(10 reference statements)

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“…The burning of sugarcane plantations, ordinary activity in the past, has been losing importance, due to society pressures and legal requirements, which lead to the prohibition of sugarcane plantation burning, as in the state of São Paulo, that follows scheme of progressive legal restrictions -20% by 2010; 30% by 2012; 50% by 2014; 80% by 2018; and 100% by 2020 (Monquero et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

“…Some studies have shown that morning glory species, before with little expression, are among the main ones on environment provided for mechanized harvesting (Monquero et al, 2011;Ferreira et al, 2010;Kuva et al, 2007). The growing importance of Ipomoea plants in sugarcane fields increases the need for information on the biology of these plants in ratoon sugarcane cycle, given the enrichment of the seed bank with species of this genus.…”

Section: Introductionmentioning

confidence: 99%

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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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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Period prior to interference of morning glory in sugarcane

Piza¹,

Nepomuceno

Alves

2016

Científica

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“…A Agricultura de Precisão considera a variabilidade dos fatores que interferem na produtividade das culturas, esta técnica do estudo da variabilidade espacial concentrou-se na Ciência do Solo (MONTANARI et al, 2012). No entanto, atualmente este conceito tem sido perfeitamente extrapolado para a Ciência das Plantas Daninhas.…”

Section: Introductionunclassified

Espacialização do Banco de Sementes de Plantas Daninhas sob Cana-de-Açúcar em Rio Brilhante, MS

Montanari¹,

Mendonça²,

Ferreira³

et al. 2013

Anais Do III Simpósio De Geoestatística Aplicada Em Ciências Agrárias

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“…Weed tests included ten selected plant species, belonging to five botanical families, based on bibliographic survey, according to their importance in the sugarcane sector (Oliveira and Freitas, 2008;Monquero et al, 2011a). They are: Convolvulaceae: little bell (Ipomoea triloba) and Merremia aegyptia; Curcubitaceae: sponge gourd (Luffa aegyptiaca); Euphorbiaceae: Mexican fireplant (Euphorbia heterophylla) and castorbean plant (Ricinus communis); Fabaceae: showy rattlebox (Crotalaria spectabilis) and velvet bean (Mucuna aterrima); and Poaceae: windmill grass (Chloris polydactyla), crabgrass (Digitaria horizontalis) and signalgrass (Urochloa decumbens).…”

Section: Methodsmentioning

confidence: 99%

“…Thus, control effectiveness over nematodes depends on a detailed survey about the main weed species that host these phytoparasites. This problem becomes extremely relevant, since studies on this area are scarce (Rizzardi et al, 2003) and, mostly, do not cover weeds that became recurrent in sugarcane cultures after the implementation of mechanized harvest system (Monquero et al, 2011a).…”

Section: Introductionmentioning

confidence: 99%

Weeds Hosts of Nematodes in Sugarcane Culture

et al. 2017

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-The presence of weeds and nematodes can affect of sugarcane yield. This research evaluated whether weeds that are very frequent in mechanized harvested sugarcane can be hosts for root-knot nematodes: Meloidogyne incognita or Meloidogyne javanica. Regarding nematode hospitability, ten weed species as well as a control sample (tomato) were evaluated; they were inoculated with M. incognita and M. javanica. The plants were inoculated with 2,000 eggs and second-stage juveniles (J 2 ), and there were three plants per experimental unit (6,000 eggs and J 2 per pot -repeatition); 60 days after inoculation (DAI), the plants were removed and evaluated according to reproduction factor (RF), nematode final population (FP) and reproducibility index (RI). Regarding weed hospitability, it was found that Luffa aegyptiaca acted as a host for both nematodes, with RF > 1, which was higher than the control sample. Digitaria horizontalis was classified as a host for M. incognita and as a non-host for M. javanica. Mucuna aterrima and Crotalaria spectabilis presented the lowest RF and FP. Ricinus communis and Ipomoea triloba presented galls when inoculated with M. incognita, but were not considered host, since they presented RF < 1. None of the weed species was considered immune, i.e., with RF = 0. The lowest RF values of M. incognita (race 3) were related to Crotalaria spectabilis and Euphorbia heterophylla plants. This demonstrates the ability of crotalarias in decreasing nematode population in the field and justifies its use in several areas before planting main crops. Keywords

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Monitoramento do banco de sementes de plantas daninhas em áreas com Cana-de-Açúcar colhida mecanicamente

Cited by 11 publications

References 21 publications

Period prior to interference of morning glory in sugarcane

Period prior to interference of morning glory in sugarcane

Espacialização do Banco de Sementes de Plantas Daninhas sob Cana-de-Açúcar em Rio Brilhante, MS

Weeds Hosts of Nematodes in Sugarcane Culture

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