Designing a robust strategy to scout a key pest in cashew orchards

Mota, Maria do Socorro Cavalcante de Souza; Lopes, Mayara Cristina; Arcanjo, Lucas de Paulo; Mesquita, A. L. M.; Pereira, R. de C. A.; Silva, Ricardo Siqueira da; Picanço, Marcelo Coutinho

doi:10.1016/j.cropro.2022.105954

Cited by 3 publications

(14 citation statements)

References 26 publications

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“…These numbers are about 85% lower than those (88 samples) used in this pest's conventional sampling plan determined by Mota et al (2022). This indicates that farmers can use them efficiently since sampling plans with smaller samples are feasible because they make quick and low-cost decisions (Gonring et al, 2020;Lima et al, 2017).…”

Section: Discussionmentioning

confidence: 80%

“…where h 0 = intercept on the UB 0 axis when n = 0, S = slope, h 1 = intercept on the UB 1 when n = 0 and n = number of samples (up to 88, which is the number of samples in the conventional plan determined by Mota et al, 2022).…”

Section: Decision-making Limitsmentioning

confidence: 99%

“…For α and β, the adopted values were 0.15 (Young & Young, 2002). The k value used was 0.20, which was obtained by a conventional sampling plan (Mota et al, 2022. For m 0 , 50% of the EIL values calculated in this study was used.…”

Section: Decision-making Limitsmentioning

confidence: 99%

“…Subsequently, the percentage of attacked chestnuts was calculated for each cluster using formula (3). As demonstrated in the conventional sampling plan, this methodology was used because it was ideal for assessing the intensity of A. phytomiella attack on cashew orchards (Mota et al, 2022).…”

Section: Validation Of Sequential Sampling Plans By Pest Monitoring I...mentioning

confidence: 99%

“…In each orchard, the pest densities in each sample were compared with the decision-making limits of the sequential sampling plans determined in this study. The number of samples each sequential Lopes et al, 2019;Mota et al, 2022). The decisionmaking time-saving for each sequential sampling plan were was determined using formula (11) (Paes et al, 2019;de Paulo Arcanjo et al, 2021):…”

Section: Validation Of Sequential Sampling Plans By Pest Monitoring I...mentioning

confidence: 99%

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Control decision‐making systems for Anacampsis phytomiella in cashew orchards as a function of insecticide spray method and irrigation use

de Freitas,

Mota,

Carmo

et al. 2023

Agri and Forest Entomology

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Cashew (Anacardium occidentale) is one of the main tropical fruit trees, and its chestnuts are the most consumed in the world. Cashew orchards are managed under irrigated and unirrigated conditions, and pesticides are applied manually (hand sprayer) or by a tractor‐powered sprayer. The chestnut moth Anacampsis phytomiella (Lepidoptera: Gelechiidae) is the primary pest that attacks cashew chestnuts, causing losses of up to 53% in yield in the orchards. Sampling plans and economic injury levels (EILs) are part of the decision‐making systems of integrated pest management (IPM) programmes. The EIL varies according to the method of insecticide spraying (hand sprayer or tractor) and in irrigated and unirrigated cashew orchards. This study aimed to determine the EIL and a sequential sampling plan for A. phytomiella in cashew orchards. Decision‐making systems were determined using data collected from 44 orchards over 3 years. EILs ranged from 0.53 to 1.53 for chestnuts attacked by the pest in bunches with 10 chestnuts, depending on irrigation and insecticide spray methods. The sequential sampling plan was validated using field‐collected data (providing correct decisions in 100% of the fields and an average time saving of 83.65%), operational characteristic (OC) and average sample number curves. In conclusion, determined decision‐making systems can be incorporated into IPM programmes for A. phytomiella in cashew orchards, as they enable correct, rapid and cost‐effective pest control decisions.

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Section: Discussionmentioning

confidence: 80%

Section: Decision-making Limitsmentioning

confidence: 99%

Section: Decision-making Limitsmentioning

confidence: 99%

Section: Validation Of Sequential Sampling Plans By Pest Monitoring I...mentioning

confidence: 99%

Section: Validation Of Sequential Sampling Plans By Pest Monitoring I...mentioning

confidence: 99%

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Control decision‐making systems for Anacampsis phytomiella in cashew orchards as a function of insecticide spray method and irrigation use

de Freitas,

Mota,

Carmo

et al. 2023

Agri and Forest Entomology

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Nut yield and infestation of Anacampsis phytomiella Busck (Lepidoptera: Gelechiidae) in progeny of the dwarf cashew

et al. 2023

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Sampling Methodology of a Key Pest: Technique and Sampling Unit for Evaluation of Leafhopper Dalbulus maidis Populations in Maize Crops

et al. 2023

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Maize (Zea mays) is the most consumed food in the world. The leafhopper, Dalbulus maidis, (Hemiptera: Cicadellidae) is one of the most important maize pests, and due to its direct and indirect damage, it can cause losses of up to 100%. Sampling plans are essential components for integrated pest management programs. The first two components to be determined in these plans are the sampling unit and the sampling technique. The sampling unit consists of determining the plant organ to be evaluated in the sampling and the techniques are the devices used to sample populations of pests in crops. Thus, the objective of this work was to select the unit and technique to be used in the sampling of D. maidis in maize crops. For this purpose, pest populations in plants at stages V4, V6, V8, and V10 were monitored in 16 commercial crops in the Atlantic Forest and Cerrado biomes over two years. The sample units studied were the leaves at different positions in the canopy of the plants. The techniques studied were direct counting, shaking the apex of the plants in a plastic tray and using a beating cloth. In the process of selecting the unit and technique to be used in sampling populations of pests in crops, adequate criteria must be used. These criteria include precision, representativeness, sampling time and that the use of these components in the sampling plans should not cause damage to the plants. The most suitable sampling unit for evaluating these pest populations was the whorl leaves and the best technique was the direct counting. Therefore, the unit and technique selected in this work can be used in sampling plans for D. maidis in maize crops.

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Designing a robust strategy to scout a key pest in cashew orchards

Cited by 3 publications

References 26 publications

Control decision‐making systems for Anacampsis phytomiella in cashew orchards as a function of insecticide spray method and irrigation use

Control decision‐making systems for Anacampsis phytomiella in cashew orchards as a function of insecticide spray method and irrigation use

Nut yield and infestation of Anacampsis phytomiella Busck (Lepidoptera: Gelechiidae) in progeny of the dwarf cashew

Sampling Methodology of a Key Pest: Technique and Sampling Unit for Evaluation of Leafhopper Dalbulus maidis Populations in Maize Crops

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