Influência da nutrição mineral foliar sobre doenças da parte aérea da cultura do trigo

Morales, Rafael Gustavo Ferreira; Santos, Idalmir dos; Tomazeli, Vanessa Nataline

doi:10.1590/s0034-737x2012000100010

Cited by 5 publications

(3 citation statements)

References 18 publications

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“…The application of L-glutamic acid biofertilizer combined with the fungicide was more effective in the management of coffee leaf rust than other isolated products. Similar results were obtained by Morales, Santos, and Tomazeli (2012) who investigated diseases in aerial parts of wheat in which the complementary nutritional foliar effect was potentiated by the fungicide, enhancing plant resistance and, consequently, reducing phytopathogenic agents when compared to the use of isolated products.…”

Section: Discussionsupporting

confidence: 81%

Management of coffee leaf rust using L-glutamic acid biofertilizer combined with fungicide

Cabral

Mafra

Carvalho

et al. 2022

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The use of biofertilizers is a potential tool for the management of crop diseases. Coffee leaf rust, which is commonly controlled by triazole and strobilurin fungicides, is one of the main phytosanitary challenges associated with coffee cultivation. However, the indiscriminate use of such fungicides may be harmful to the environment and human health, in addition to having a negative impact on coffee exports. The aim of this study was to evaluate the effect of foliar application of L-glutamic acid on the incidence and severity of coffee leaf rust in the southern region of Minas Gerais, Brazil. A biofertilizer made of sugarcane molasses fermented by the bacterium Corynebacterium glutamicum was used in combination with 25% L-glutamic acid and a fungicide of the triazole group registered for crops. The experimental design adopted was randomized blocks with four replications (eight plants per replicate) and seven treatments: fungicide, control test, 0.8 L ha -1 of biofertilizer, combinations of 0.04, 0.06, 0.08, and 0.1 L ha -1 of biofertilizer and fungicide. Three treatments were initially applied in a preventive way, before the rainy season, and then at intervals of 60 days. After seven months of treatment, we observed that coffee leaf rust incidence was significantly lower in coffee plants treated with combined products than in treatments of either fungicide or biofertilizer only, with a reduction of 56% and 45%, respectively, being observed. Among the combinations of biofertilizer and fungicide, coffee leaf rust incidence reduced with an increase in the biofertilizer dose, such that the disease incidence in plants treated with a dose of 0.1 L ha -1 was 58% lower than that in plants treated with fungicide only. No differences in disease severity were observed among the treatments. In conclusion, the use of a combination of biofertilizer and fungicide is more effective for the management of coffee leaf rust than the use of the isolated products.

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Section: Discussionsupporting

confidence: 81%

Management of coffee leaf rust using L-glutamic acid biofertilizer combined with fungicide

Cabral

Mafra

Carvalho

et al. 2022

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“…), ataca a planta nos vários estágios de desenvolvimento desta e a intensidade varia dependendo da suscetibilidade do cultivar utilizado, da virulência da raça fisiológica do patógeno e das condições ambientais (ASSUNÇÃO & TORRES, 2013). Para tentar controlar a ferrugem da folha do trigo e outras doenças, muitos métodos estão sendo utilizados como, uso de cultivares resistentes, sementes sadias, rotação de culturas e aplicação de fungicidas (MORALES, et al, 2012).…”

Section: Introductionunclassified

Fosfitos E Produtos Á Base De Extratos Vegetais No Controle Da Ferrugem Do Trigo

Vey¹,

Rodrigues²,

Hajar³

et al. 2017

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“…Diversos fatores podem causar reduções no potencial produtivo da cultura (MORALES et al, 2012). Entre eles, destacam-se as doenças fúngicas, que têm elevada incidência no Rio Grande do Sul devido à ocorrência de invernos chuvosos e excesso de dias nublados.…”

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Caracterização da pulverização de fungicida na cultura do trigo com pontas hidráulicas e atomizadores rotativos de discos

et al. 2014

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RESUMO:O objetivo deste trabalho foi avaliar as características de pulverização de pontas hidráulicas e atomizadores rotativos de discos, utilizando diferentes volumes de calda, na cultura do trigo, bem como seus rendimentos operacionais. Foram CHARACTERIZATION OF FUNGICIDE APPLICATION ON WHEAT CROPS WITH HYDRAULIC NOZZLES AND ROTARY-DISK ATOMIZERS ABSTRACT:The study aimed to evaluate the pulverization characteristics of the hydraulic nozzles and rotary-disk atomizer with different spraying rates on wheat crops, and their operational capacity. For this reason were installed two experiments, on the harvest years of 2009 and 2010. In first year was used the cultivar Fundacep 30, and in the second year the cultivars Pampeano and Nova Era. The experiments evaluating the pulverization with flat nozzles and hollow cone spray nozzle, both with the pulverization rate of 120 L ha -1 , and rotary-disk atomizer with 24 and 34 L ha -1 in low volume in oil. The evaluated parameters were the droplet density and the medium volumetric diameter on the upper, mid and lower third throughout the analysis of water sensible cards. Also, was calculated the operational capacity of the traits. The results showed that the rotarydisk atomizer with 24L ha -¹ showed a higher droplet density on the upper third, however, there was no difference among the mid and lower thirds treatments. The rotary-disk atomizer presented droplets of smaller medium volumetric diameter compared to the hydraulic nozzles that presented high droplet heterogeneity. The higher operational capacity was achieved with the atomizers, due the lower spray volume used by this equipment.

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Influência da nutrição mineral foliar sobre doenças da parte aérea da cultura do trigo

Cited by 5 publications

References 18 publications

Management of coffee leaf rust using L-glutamic acid biofertilizer combined with fungicide

Management of coffee leaf rust using L-glutamic acid biofertilizer combined with fungicide

Fosfitos E Produtos Á Base De Extratos Vegetais No Controle Da Ferrugem Do Trigo

Caracterização da pulverização de fungicida na cultura do trigo com pontas hidráulicas e atomizadores rotativos de discos

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