Produtividade e qualidade da matéria prima de cultivares de cana-de-açúcar submetida à aplicação de herbicidas

Tironi, Siumar Pedro; Galon, Leandro; Farias, Autieres Teixeira; Silva, Antônio Alberto da; Barbosa, Márcio Henrique Pereira

doi:10.7824/rbh.v11i1.129

Cited by 4 publications

(2 citation statements)

References 11 publications

(31 reference statements)

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“…However, Tironi et al (2012) found reduced productivity (TCH --tons of sugarcane per hectare) when herbicides were applied at post-emergence of sugarcane (three to four fully expanded leaves). Thus, it is recommended the morning glory control at the first application, even PPI more than 70 DAE.…”

Section: Resultsmentioning

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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Section: Resultsmentioning

confidence: 99%

Period prior to interference of morning glory in sugarcane

Piza¹,

Nepomuceno

Alves

2016

Científica

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“…Ressalta-se que, na condição desse experimento, nem mesmo a aplicação isolada do herbicida sulfentrazone diminuiu a produtividade da cultura de cana-de-açúcar. Esse trabalho está em concordância com Tironi et al (2012), que ao realizarem a pulverização de 750 g ha -1…”

Section: Produção De Colmosunclassified

Fisioativadores e a fitotoxicidade causada pelos herbicidas sulfentrazone, imazapique e clomazone na cultura de cana-de-açúcar

Andrade¹

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Chemical management of weeds in corn hybrids

Galon

David

Forte

et al. 2018

Weed Biology and Management

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Corn stands out among the cultivars because of its high importance in food, animal feed and raw materials for energy production. The quantity and quality of the harvested grain can be reduced, mainly due to inadequate weed management. Nowadays, weed control is accomplished with the use of herbicides as pre-emergence and postemergence, applied alone or in a tank mix. This study aimed to evaluate the efficiency of the control of weeds and phytotoxicity of the herbicides that were applied in tank mix or isolated in the corn hybrids, Formula TL ® and SYN 7B28. Two experiments were conducted: in the 2012/2013 season (Formula TL ® ) and 2013/2014 season (SYN 7B28). There was a low initial phytotoxicity of all the tested herbicides in the initial evaluation; however, from 14 days after treatment, it was minimal. The weed control of Ipomoea indivisa, Urochloa plantaginea and Euphorbia heterophylla in both experiments was better, in general, when using the tank mixtures of atrazine + simazine + tembotrione and atrazine + simazine + mesotrione, respectively. The application of atrazine + simazine + tembotrione in the SYN 7B28 hybrids provided, with the exception of the thousand-grain weight, the best expression of grain yield components, combining a low phytotoxicity and best control of the weeds. The Formula TL ® hybrid presented the highest mass of a thousand grains and yield with the application of nicosulfuron + tembotrione. The yield average difference of the herbicide treatments and the unweeded control showed an increase of 27.66 and 34.59% in the grain yield of the corn hybrids, Formula TL ® and SYN 7B28, respectively. Aureo, methylated soybean oil; MOAH, mineral oil aromatic hydrocarbon; MSO, methylated seed oil. 28L. Galon et al.

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Produtividade e qualidade da matéria prima de cultivares de cana-de-açúcar submetida à aplicação de herbicidas

Cited by 4 publications

References 11 publications

Period prior to interference of morning glory in sugarcane

Period prior to interference of morning glory in sugarcane

Fisioativadores e a fitotoxicidade causada pelos herbicidas sulfentrazone, imazapique e clomazone na cultura de cana-de-açúcar

Chemical management of weeds in corn hybrids

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