Within-Plant Distribution of Twospotted Spider Mites (Acari: Tetranychidae) on Impatiens: Development of a Presence–Absence Sampling Plan

Alatawi, Fahad Jaber; Opit, George P.; Margolies, David C.; Nechols, James R.

doi:10.1603/0022-0493-98.3.1040

Cited by 23 publications

(17 citation statements)

References 16 publications

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“…Mite occurrence hinders plant growth (Rock and Yeargan, 1973), fruit development (Alatawi et al, 2005), and yield loss from 7% to 48% (Anonymous, 1996).…”

mentioning

confidence: 99%

Relative Toxicity of Fenazaquin Against Two-Spotted Spider Mite on Okra

Sangeetha

Ramaraju

2013

International Journal of Vegetable Science

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“…Mite occurrence hinders plant growth (Rock and Yeargan, 1973), fruit development (Alatawi et al, 2005), and yield loss from 7% to 48% (Anonymous, 1996).…”

mentioning

confidence: 99%

Relative Toxicity of Fenazaquin Against Two-Spotted Spider Mite on Okra

Sangeetha

Ramaraju

2013

International Journal of Vegetable Science

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“…Within the monitoring a cheaper option may be sequential sampling (Alatawi et al, 2005), which is characterized by the use of a variable number of sample units (Costa et al, 2007). Sequential sampling usually results in the observation of a smaller number of samples than would be required with conventional sampling (Fernandes et al, 2002), saving time and labor (Fernandes et al, 2003).…”

Section: Resultsmentioning

confidence: 99%

Sequential Sampling of Adults and Nymphs of Euschistus heros (F) (Hemiptera: Pentatomidae) on Soybean Bt and Non-Bt

Fonseca¹,

Fernandes²,

Justiniano³

et al. 2014

JAS

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To deploy the appropriate management of adults and nymphs of Euschistus heros (Fabricius, 1794) in soybean, we need to construct a sampling plan that allows estimate population density quickly and accurately. This research aimed to perform sequential sampling of adults and nymphs of E. heros in Bt and non-Bt soybeans. For the evaluations we used the method of cloth-to-hit, two regions in which the sample areas where we collected a sample randomly per plot of each trial were installed. Evaluations were performed at 7, 14, 21, 28, 35, 42, 49, 56, 63, 70, 77, 84, 91, 98 days after emergence (DAE). We adopted the model of contagious distribution, it was constructed a sequential sampling plan in accordance with the Sequential Probability Ratio Test (TSRP). The adopted control level two bugs (adults and nymphs) per cloth beat. The analysis showed two lines of decision: the upper, which is the condition that the adoption of a method of control is recommended, defined by S1 = 6.2449 +0.14244 n; and below, representing that the adoption of some method of control is not recommended, defined by S0 = -6.2449 +0.14244 n. The sampling showed a maximum expected number eight samples to determine the need or otherwise of control. For management based on economic injury level, the expected number of sample units is 17, indicated by the Sequential Probability Ratio Test Wald curve.

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“…In Impatiens, a strategy for sampling T. urticae was developed based on the distribution of the mites on different plant parts (Alatawi et al 2005). A presence-absence sampling strategy was developed for T. urticae and N. californicus on strawberry in Argentina (Greco et al 2004) based on the reported spatial coincidence of the two species in glasshouse grown strawberry crops (Greco et al 1999).…”

Section: Discussionmentioning

confidence: 99%

The spatial and temporal distribution of predatory and phytophagous mites in field-grown strawberry in the UK

Fitzgerald

Pepper

et al. 2008

Exp Appl Acarol

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Extensive sampling of strawberry plants in everbearing and June-bearing strawberry plantations and on potted plants showed that different species of mites were spatially separated. Of the two phytophagous species recorded, Tetranychus urticae was most abundant on old leaves and Phytonemus pallidus on folded leaves and flower/fruit clusters. Predatory phytoseiid mites were found on all plant parts but different species were spatially separated; Neoseiulus cucumeris and N. aurescens were found mostly on folded leaves and clusters, and N. californicus and Phytoseiulus persimilis on old and medium aged leaves. No Typhlodromus pyri were found in the field plantations. These patterns of distribution did not change over sampling dates in summer and early autumn. An understanding of this within-plant zonation of mite species is important when studying predator-prey interactions and when designing sampling strategies for strawberry. A programme to sample the entire mite system on strawberry should be stratified to include all the above mentioned parts of the plant. Different sampling protocols, as appropriate, are required for sampling different pest species and their associated predators.

show abstract

Within-Plant Distribution of Twospotted Spider Mites (Acari: Tetranychidae) on Impatiens: Development of a Presence–Absence Sampling Plan

Cited by 23 publications

References 16 publications

Relative Toxicity of Fenazaquin Against Two-Spotted Spider Mite on Okra

Relative Toxicity of Fenazaquin Against Two-Spotted Spider Mite on Okra

Sequential Sampling of Adults and Nymphs of Euschistus heros (F) (Hemiptera: Pentatomidae) on Soybean Bt and Non-Bt

The spatial and temporal distribution of predatory and phytophagous mites in field-grown strawberry in the UK

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