Parâmetros Característicos Da Pulverização Pneumática Em Copas De Árvores De Eucalipto

Mewes, Walter Luiz Castro; Teixeira, Mauri Martins; Fernándes, Haroldo Carlos; Zanúncio, José Cola; Tibúrcio, Rafael Augusto Soares

doi:10.1590/0100-67622015000400005

Cited by 5 publications

(5 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The use of phytosanitary products, although it is responsible for reducing losses in agricultural production due to the control of pests, diseases and invasive plants, may be questionable due to the risk of environmental contamination provided by the potential loss of products to the environment (SASAKI, 2011). In plants with high leaf density, it is common that most of the sprayed drops containing phytosanitary products do not reach the interior of the plant canopy, impairing the dispersion and uniformity of distribution of the drops, which may result in low control effectiveness (MEWES et al 2015). For this reason, it is necessary to offer efficient alternatives to the tomato production chain.…”

Section: Introductionmentioning

confidence: 99%

Quality Control of Pneumatic Spraying in Tomato

Teixeira

Teixeira²,

Fernándes³

et al. 2020

Reveng

Self Cite

View full text Add to dashboard Cite

Tomato is a vegetable of great importance on the national scene. One of the problems of this culture is the great susceptibility to attack by pests and diseases. Thus, one of the most used practices is chemical control with phytosanitary products. The objective of this study was to evaluate the technical parameters of pneumatic spraying in tomato culture, through the study of the volumetric index and the population of spray droplets, aiming to reduce the spray volume, obtain the best efficiency and the social and environmental safety of the applications. The study of the droplet population was performed using water-sensitive paper labels. These labels were placed in the canopies of the tomato plants at three different heights and two positions. The sprays were made using a pneumatic backpack sprayer. After applying the syrup (dye + water), the water-sensitive paper labels were collected and subjected to the coverage and droplet density analyses by the computer program “CIR” version 1.5. The pneumatic sprayer proved to be efficient for the application of phytosanitary products in the tomato. The percentage of the target covered area ranged from 2.1 to 8.3% for volumetric indices as a function of thirds and positions, whereas the density of droplets ranged from 145.4 to 690.1 drops cm-2 for thirds and positions of the tomato plants evaluated. Finally, the volumetric index of 5 mL m-3, with a consequent spray volume of 50 L ha-1, met the parameters of a quality spray.

show abstract

Section: Introductionmentioning

confidence: 99%

Quality Control of Pneumatic Spraying in Tomato

Teixeira

Teixeira²,

Fernándes³

et al. 2020

Reveng

Self Cite

View full text Add to dashboard Cite

show abstract

“…Efficient strategies to manage the T. peregrinus in commercial plantations in Brazil are unavailable, thus, biological control is the viable option against this pest 30,36 . The Cleruchoides noackae Lin and Huber (Hymenoptera: Mymaridae) 12 , Hemerobius bolivari Banks (Neuroptera: Hemerobiidae) 19 , Chrysoperla externa (Hagen) (Neuroptera: Chrysopidae) 15 and predatory stinkbug have been reported as natural enemies of T. peregrinus 19,37,38 .…”

Section: Introductionmentioning

confidence: 99%

Chemical vs entomopathogenic control of Thaumastocoris peregrinus (Hemiptera: Thaumastocoridae) via aerial application in eucalyptus plantations

Wilcken

Pogetto²,

Lima

et al. 2019

Sci Rep

Self Cite

View full text Add to dashboard Cite

The Thaumastocoris peregrinus spread to eucalyptus plantations in many countries. Chemical control is a questionable measure, mainly due to the environmental impact, high cost and moreover has the use restricted by the forest certifications. Bio-insecticides may have similar efficiency to chemical products to control T. peregrinus . The chemical thiamethoxam, thiamethoxam + lambda-cyhalothrin, acephate and the microbial Beauveria bassiana and Metarhizium anisopliae insecticides were tested at different doses to manage T. peregrinus . The products were sprayed on eucalyptus plants using aircraft and populations of this insect were counted before application and at 1, 14 and 21 days afterwards (DAA). Ten eucalyptus trees were evaluated per plot, with the collection of ten leaves from the middle third of the crown of each tree, and the number of T. peregrinus nymphs and adults obtained per leaf was determined. All the chemical insecticides had similar control at 1 DAA for T. peregrinus nymphs and adults. At 14 DAA, the number of T. peregrinus nymphs and adults on eucalyptus leaves was similar for the chemical and microbial insecticide treatments. At 21 DAA the control efficiency of T. peregrinus nymphs and adults was higher than 80% with all insecticides. The entomopathogenic insecticides have potential for aerial application to control T. peregrinus nymphs and adults and provide viable and environmentally-friendly alternative to manage this pest.

show abstract

“…This pest is a native Australian hemipteran that feeds on the leaves of a wide variety of eucalyptus species and hybrids (Carpintero & Dellapé 2006;Noack et al 2011;Soliman et al 2012;Mutitu et al 2013), causing silvering, tanning, and leaf drying. The efficiency of pesticides usage in forest crops is reduced because of the extensive nature of forest plantations, the height of eucalyptus trees, and the behavior of this insect pest (Zanuncio et al 2010;Mewes et al 2015).…”

Section: Introductionmentioning

confidence: 99%

Establishment in the Field ofCleruchoides noackae(Hymenoptera: Mymaridae), an Exotic Egg Parasitoid ofThaumastocoris peregrinus(Hemiptera: Thaumastocoridae)

Barbosa

Rodrigues

Soler

et al. 2017

Florida Entomologist

Self Cite

View full text Add to dashboard Cite

Efficient strategies to control the bronze bug Thaumastocoris peregrinus Carpintero and Dellapé (Hemiptera: Thaumastocoridae) are unavailable, but Cleruchoides noackae Lin and Huber (Hymenoptera: Mymaridae) parasitizes eggs of this pest. The parasitism and number of parasitoids that emerged from the eggs of T. peregrinus were evaluated in the laboratory and from eggs of this pest collected in the field in an area of approximately 2 ha. Collections were done 1 yr after the first release of C. noackae to check for field establishment of this parasitoid in eucalyptus plantations in Minas Gerais State, Brazil. The emergence of C. noackae was 53 and 52% from eggs parasitized in the laboratory and in the field, respectively. This natural enemy was recorded for all sampling points from the field collections, which were up to 10 km from the place it had been released. The C. noackae establishment in the field, and the potential for biological control of T. peregrinus by this parasitoid were confirmed.

show abstract

Parâmetros Característicos Da Pulverização Pneumática Em Copas De Árvores De Eucalipto

Cited by 5 publications

References 7 publications

Quality Control of Pneumatic Spraying in Tomato

Quality Control of Pneumatic Spraying in Tomato

Chemical vs entomopathogenic control of Thaumastocoris peregrinus (Hemiptera: Thaumastocoridae) via aerial application in eucalyptus plantations

Establishment in the Field ofCleruchoides noackae(Hymenoptera: Mymaridae), an Exotic Egg Parasitoid ofThaumastocoris peregrinus(Hemiptera: Thaumastocoridae)

Contact Info

Product

Resources

About