Tank mixture of pesticides for Spodoptera frugiperda control in maize with triflumuron

Zandonadi, César Henrique Souza; Cunha, João Paulo Arantes Rodrigues da; Alves, Thales Cassemiro; Silva, Sérgio Macedo

doi:10.14393/bj-v33n1a2017-35733

Cited by 3 publications

(2 citation statements)

References 11 publications

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“…Cunha et al (2010a) found that the adjuvants polyether polymethyl copolymer, glycol fatty acid esters, and mineral oil reduced the conductivity of spray mixtures whereas the methyl ester of soybean oil increased conductivity. Zandonadi et al (2017) reported that this variable was related to the concentration and charge of ions in the solution, i.e., the chemical composition of each product.…”

Section: Physicochemical Characteristicsmentioning

confidence: 99%

Effect of Nozzles, Application Rates, and Adjuvants on Spray Deposition in Wheat Crops

et al. 2019

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The use of insecticides is common in pest management in wheat crops but may lead to higher production costs and environmental contamination. Therefore, a more comprehensive and uniform distribution of plant protection products in the desired target is recommended. The objective of this study is to evaluate the effect of different spray nozzles, application rates, and adjuvants on droplet spectrum and spray deposition in wheat crops. The physicochemical characteristics of the spray mixture, droplet spectrum, and spray deposition in wheat plants were evaluated. The lower application rate (75 L ha-1) combined with the use of the twin flat fan tip AS7030 and the adjuvant sodium lauryl ether sulfate (SLES) yielded droplets with a larger diameter. However, insecticide spraying using hollow cone tip MGA 015 without adjuvants provided the highest percentage of droplets susceptible to drift. SLES significantly decreased the percentage of drift by increasing droplet size, and the adjuvant silicone, d-limonene, and polyester copolymer increased spray deposition. The evaluated adjuvants increased the electrical conductivity and reduced the surface tension of the spray mixtures. These results indicate that it is possible to reduce the application rate from 150 to 75 L ha-1 without affecting spray deposition on wheat leaves.

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Section: Physicochemical Characteristicsmentioning

confidence: 99%

Effect of Nozzles, Application Rates, and Adjuvants on Spray Deposition in Wheat Crops

et al. 2019

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“…Changes in plant gas exchange physiological parameters after application of phytosanitary products are effects already reported in the literature (TORRES et al, 2012;CARRIJO, 2014;ZANDONADI et al, 2017). Besides the thermal effect that fungicide solutions can induce on treated leaves, Biggs (1990) has already pointed out that the application of triazole fungicides could induce changes in leaf transpiration and that these effects would persist for several days after application.…”

Section: Resultsmentioning

confidence: 85%

Physiological changes in sugarcane in function of air and ground application of fungicide for orange rust control

Alves¹,

Cunha²,

Lemes³

et al. 2018

Biosci. J.

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The application of fungicides in different operating conditions is a usual practice for maintaining the productive potential in sugarcane varieties considered susceptible to orange rust, however, the physiological effects provided by the different application methods are unknown. The objective of this study was to evaluate the photosynthetic responses (gas exchange and chlorophyll content) in the SP81-3250 sugarcane variety, in function of different operational conditions of the aerial and ground application of fungicide in the orange rust control. Two application of fungicides of the chemical groups Strobilurins and Triazoles were carried out in the experimental units in different treatments. In the aerial applications, two application rates (30 and 40 L ha -1 ) and three nozzle orientations (0º, 90º and 135º) and in the ground application was used 200 L ha -1 and flat fan spray nozzles with air induction (AI11004-VS). Gas exchange evaluations were performed with an IRGA and amount of chlorophyll a and b with a chlorophyll meter. Data were analyzed using Student's t-test for independent samples, at 0.05 significance. The aerial application provided better photosynthetic responses and chlorophyll a and b contents in leaf limb compared to ground application. Significant differences were detected in gas exchange and chlorophyll content between application rates and angulation of the spray nozzles in the boom. Fungicide applications provided increments of more than 19 t ha -1 compared to the control, depending on the spraying technique employed. Aerial application with 30 L ha -1 and 0° of deflection is a viable option to provide safer applications as a function of the larger droplet size.

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Expansion of Planted Forests: The Risk of Pesticides Mixtures

Barroso

Duque

Custódio

et al. 2022

Forests

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Planted forests include forests established through human planting or deliberate seeding. They are systems that offer us timber and non-timber forest products and ecosystem services, such as wildlife protection, carbon sequestration, soil, and watershed maintenance. Brazil has 7.6 million hectares of planted forests, with 72% of the total area occupied by Eucalyptus spp. A favorable climate and management and genetic improvement research are the main factors responsible for high productivity. In recent years, the expansion of planted areas has been accompanied by the commercial release of several pesticides, mainly herbicides. A recent change in the Brazilian legislation allows mixing phytosanitary products in a spray tank, having a new approach to managing pests, diseases, and weeds. Antagonism is the main risk of tank mixes, and to reduce the dangers associated with this practice, we review all products registered for growing Eucalyptus. This literature review aims to identify the effects of product mixtures registered for Eucalyptus reported for other crops. In addition, environmental and social risk assessment has been widely adopted to export wood and cellulose, making the results of this review an indispensable tool in identifying the nature and degree of risks associated with pesticides. The results classify the effects of the mixtures as an additive, antagonistic or synergistic. The use of pesticide tank mixtures has the potential for expansion. However, there are still challenges regarding variations in the effects and applications in different climatic conditions. Therefore, studies that prove efficient mixtures for the forest sector are essential and the training of human resources.

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Tank mixture of pesticides for Spodoptera frugiperda control in maize with triflumuron

Cited by 3 publications

References 11 publications

Effect of Nozzles, Application Rates, and Adjuvants on Spray Deposition in Wheat Crops

Effect of Nozzles, Application Rates, and Adjuvants on Spray Deposition in Wheat Crops

Physiological changes in sugarcane in function of air and ground application of fungicide for orange rust control

Expansion of Planted Forests: The Risk of Pesticides Mixtures

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