Spatial distribution of grape leafhopper, Arboridia kermanshah (Hemiptera: Cicadellidae) immature stages, in vineyards of Kermanshah County

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Deh Pahni Shabnam; Vahedi Hassanali; DARBEMAMIEH MARYAM

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Journal: Journal of Applied Research in Plant Protection Year:2021 | Volume:9 | Issue:4 Page(s): 49-60

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Information Journal Paper

Title

Spatial distribution of grape leafhopper, Arboridia kermanshah (Hemiptera: Cicadellidae) immature stages, in vineyards of Kermanshah County

Author(s)

Deh Pahni Shabnam | Vahedi Hassanali | DARBEMAMIEH MARYAM | Issue Writer Certificate

Keywords

SamplingQ1

Grape leafhopperQ2

Taylor’s power lawQ1

Iwao’s patchiness regressionQ1

Abstract

Grape leafhopper, Arboridia kermanshah (Hemiptera: Cicadellidae) is one of the important pests of grapevine in Iran. In this research, the spatial distribution of A. kermanshah immature stages was investigated in a vineyard of the Kermanshah region, during 2017 and 2018. Grape leaf selected as Sampling unit and Sampling process carried out every week. The spatial distribution of eggs and immature stages of this pest calculated using: Index of dispersion, Morisita, Lloyd’ s mean crowding index, Iwao’ s patchiness regression and Taylor’ s power law Indexes. Most used methods revealed an aggregated spatial distribution for the pest (b > 1). According to the Iwao’ s method in first Sampling year, regression for 4 th and 5 th nymphal instars, was not significant (P-value > 0. 05). In Taylor method for both Sampling years and Iwao’ s method for second Sampling year, distribution calculated random for 4 th and 5 th nymphal stages. Also, using the Morisita’ s index in both Sampling seasons and most (10) Sampling dates, for the 4 th and 5 th nymphal stages, random distribution calculated. In both Sampling seasons, Taylor’ s power law method found to be more accurate than other methods in determination of the spatial distribution for this pest. Additionally, the lowest optimum sample sizes calculated using Taylor’ s coefficients that were more affordable in comparison with other methods. Knowledge of the spatial distribution of this pest can be useful in designation of suitable Sampling programs. Estimation of optimum sample sizes can also be useful in decreasing of Sampling costs in both research and management programs.

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APA: Copy

Deh Pahni, Shabnam, Vahedi, Hassanali, & DARBEMAMIEH, MARYAM. (2021). Spatial distribution of grape leafhopper, Arboridia kermanshah (Hemiptera: Cicadellidae) immature stages, in vineyards of Kermanshah County. JOURNAL OF APPLIED RESEARCHES IN PLANT PROTECTION, 9(4 ), 49-60. SID. https://sid.ir/paper/401663/en

Vancouver: Copy

Deh Pahni Shabnam, Vahedi Hassanali, DARBEMAMIEH MARYAM. Spatial distribution of grape leafhopper, Arboridia kermanshah (Hemiptera: Cicadellidae) immature stages, in vineyards of Kermanshah County. JOURNAL OF APPLIED RESEARCHES IN PLANT PROTECTION[Internet]. 2021;9(4 ):49-60. Available from: https://sid.ir/paper/401663/en

IEEE: Copy

Shabnam Deh Pahni, Hassanali Vahedi, and MARYAM DARBEMAMIEH, “Spatial distribution of grape leafhopper, Arboridia kermanshah (Hemiptera: Cicadellidae) immature stages, in vineyards of Kermanshah County,” JOURNAL OF APPLIED RESEARCHES IN PLANT PROTECTION, vol. 9, no. 4 , pp. 49–60, 2021, [Online]. Available: https://sid.ir/paper/401663/en

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