SELECTIVITY OF INSECTICIDES USED IN PEACH FARMING TO LARVAE OF Chrysoperla externa (NEUROPTERA: CHRYSOPIDAE) IN SEMI-FIELD CONDITIONS

Castilhos, Rodolfo Vargas; Grützmacher, Anderson Dionei; Neves, M. B. das; Moraes, Ítalo Lucas de; Gauer, Cleiton Jair

doi:10.1590/1983-21252017v30n112rc

Cited by 7 publications

(4 citation statements)

References 15 publications

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“…Integrated pest management has one of its basic components in the selectivity of insecticides, allowing the preservation of natural enemies. Studies on the selectivity of phytosanitary products recorded for coffee cultivation have been specifically developed in favor of predators (ROCHA et al, 2010;VILELA et al, 2010;CASTILHOS et al, 2017), and there is a lack of information about the effects on parasitoids.…”

Section: Methodsmentioning

confidence: 99%

50 Management of Coffee Leaf Miner: Spray Volume, Efficacy of Cartap Hydrochloride and Impact on Parasitism

Melo

Raetano²,

Nery

et al. 2019

C.Sci.

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The leaf miner is a key pest of coffee and the use of insecticides for its control results in high water consumption. The objective in this study was to evaluate the quali-quantitative aspects of reduced spray volumes with and without the addition of adjuvant, the efficacy of the insecticide cartap hydrochloride in the control of the pest and its effects on the parasitism. Two experiments were carried out in coffee plantations in São Desiderio, BA. Initially, solution of Brilliant Blue tracer (0.15% p v-1) of the 43, 112, 146 and 309 L ha-1 volumes was sprayed with and without the soybean oil methyl ester adjuvant (0.25 % v v-1). Before spraying, water-sensitive cards were fixed to the plants and subsequently used for analyze the droplet spectrum in Gotas 1.0 software. The tracer deposit was determined by spectrophotometry. Posteriorly, the insecticide cartap hydrochloride (0.5 kg a.i. ha-1) was applied in the same volumes and types of spray used in the first test. Infestation rates of pest and parasitism were evaluated before and after application of the insecticide. The quali-quantitative aspects of the sprays were affected by the volume of spray applied, by the adjuvant and by the interaction of the factors. The intermediate volumes yielded better spraying quality without the presence of the adjuvante, with higher number and desity of drops. The spraying volume affected the depoisto the Brilliant Blue tracer in a linear and positive form. The efficacy of the insecticide was prolonged with the lowest volume spray and with adjuvant and its impact on parasitism varied with the volume applied and time after application.

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Section: Methodsmentioning

confidence: 99%

50 Management of Coffee Leaf Miner: Spray Volume, Efficacy of Cartap Hydrochloride and Impact on Parasitism

Melo

Raetano²,

Nery

et al. 2019

C.Sci.

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“…predator. Castilhos et al (2017) observed, under semi-field conditions, that insecticides (% a.i.) lufenuron (0.005) proved to be harmless (class 1); deltamethrin (0.001) and malathion (0.200) were slightly harmful (class 2), and fenthion (0.05) and phosmet (0.100) moderately harmful (class 3) to second instar larvae of C. externa.…”

Section: Soares a De F T And Carvalho G A 298mentioning

confidence: 98%

PHYSIOLOGICAL SELECTIVITY OF INSECTICIDES TO EGGS AND LARVAE OF PREDATOR Chrysoperla externa (HAGEN) (NEUROPTERA: CHRYSOPIDAE)

Soares

Carvalho

2018

C.Sci.

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Given the importance of green lacewings as agents of biological pest control, the present study aimed to evaluate the toxicity of insecticides used on coffee crops on the eggs and larvae of Chrysoperla externa. The insecticides tested were (g or mL a.i./L) chlorpyrifos (2.25), cartap hydrochloride (1.66), pyriproxyfen (0.33), profenofos/lufenuron (1.33/0.13), fenpropathrin (0.40), triazophos/deltamethrin (0.70/0.02) and zetacypermethrin (0.05). The insecticides, when applied directly on the eggs, caused no adverse effects on the duration of the embryonic period. After the application of triazophos/deltamethrin, pyriproxyfen, profenofos/lufenuron and zetacypermethrin, a reduction in egg viability was induced. The insecticides triazophos/ deltamethrin, chlorpyrifos, and profenofos/lufenuron reduced the survival of newly hatched first instar larvae from treated eggs. The first instar larvae that were treated directly were sensitive to the effects of the products used, with the effect of triazophos and chlorpyrifos/deltamethrin being high. The survival of the second instar larvae was reduced by zetacypermethrin, fenpropathrin, profenofos/lufenuron, and cartap hydrochloride. The products chlorpyrifos and triazophos/deltamethrin also did not allow second instar larvae survival. For treated third instar larvae, chlorpyrifos and triazophos/deltamethrin allowed survival of only 20.0 and 57.5%. Eggs and larvae of C. externa showed sensitiveness to insecticides chlorpyrifos and triazophos, being needed more studies in semi-field and field conditions for the confirmation or not of the toxicity aiming the conservation of this predator specie on the coffee agroecosystem.

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“…ere is thus a great need to find efficient and sustainable pest management strategies. e application of selective pest control based on pesticide selectivity tests is recommended in preserving these natural enemies as biological control instruments [7]. Selective pesticides promote the use of more satisfactory chemical insecticides, which in addition to being effective and satisfy certain criteria, they must not pose immediate or long-term risks to crops ecosystems.…”

Section: Introductionmentioning

confidence: 99%

Optimal Pest Control Strategies with Cost-effectiveness Analysis

Fitri

Hanum

Kusnanto

et al. 2021

The Scientific World Journal

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Pest and plant diseases cause damages and economic losses, threatening food security and ecosystem services. Thus, proper pest management is indispensable to mitigate the risk of losses. The risk of environmental hazards induced by toxic chemicals alongside the rapid development of chemical resistance by insects entails more resilient, sustainable, and ecologically sound approaches to chemical methods of control. This study evaluates the application of three dynamical measures of controls, namely, green insecticide, mating disruption, and the removal of infected plants, in controlling pest insects. A model was built to describe the interaction between plants and insects as well as the circulation of the pathogen. Optimal control measures are sought in such a way they maximize the healthy plant density jointly with the pests’ density under the lowest possible control efforts. Our simulation study shows that all strategies succeed in controlling the insects. However, a cost-effectiveness analysis suggests that a strategy with two measures of green insecticide and plant removal is the most cost-effective, followed by one which applies all control measures. The best strategy projects the decrease of potential loss from 65.36% to 6.12%.

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SELECTIVITY OF INSECTICIDES USED IN PEACH FARMING TO LARVAE OF Chrysoperla externa (NEUROPTERA: CHRYSOPIDAE) IN SEMI-FIELD CONDITIONS

Cited by 7 publications

References 15 publications

50 Management of Coffee Leaf Miner: Spray Volume, Efficacy of Cartap Hydrochloride and Impact on Parasitism

50 Management of Coffee Leaf Miner: Spray Volume, Efficacy of Cartap Hydrochloride and Impact on Parasitism

PHYSIOLOGICAL SELECTIVITY OF INSECTICIDES TO EGGS AND LARVAE OF PREDATOR Chrysoperla externa (HAGEN) (NEUROPTERA: CHRYSOPIDAE)

Optimal Pest Control Strategies with Cost-effectiveness Analysis

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