Determination of economic injury level of the citrus cushion, Pulvinaria aurantii (Hem.: Coccidae) in conventional citrus orchards

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Amozegar Ahmad Reza; DAMAVANDIAN MOHAMMAD REZA; AMIRI BESHELI BEHNAM

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Journal: Iranian Journal of Plant Protection Science Year:2017 | Volume:47 | Issue:2 Page(s): 313-323

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Title

Determination of economic injury level of the citrus cushion, Pulvinaria aurantii (Hem.: Coccidae) in conventional citrus orchards

Author(s)

Amozegar Ahmad Reza | DAMAVANDIAN MOHAMMAD REZA | AMIRI BESHELI BEHNAM | Issue Writer Certificate

Keywords

Pulvinaria aurantiiQ2

economic injury levelQ2

pesticideQ3

ovisacQ1

citrus fruitQ1

Abstract

The orange Pulvinaria scale, Pulvinaria aurantii (Cockerell) is the most important pest of citrus in Mazandaran, Iran. The calculation of economic injury level is essential for the appropriate decision to pest control. The economic injury level (EIL) of P. aurantii on Washington navel orange was studied during two years (2011 and 2012) in Sari (north of Iran). In the first year, six treatments of different densities of pest ovisacs (0, 1, 4, 7, 10 and 13) and each treatment with 8 replications and in the second year, five treatments (0, 5, 10, 15 and 20), each treatment with 7 replications on the leaves were evaluated in a completely randomized design (CRD). economic injury level (EIL) was calculated as 133, 125, 110 and 131 ovisacs per branches with an average number of 7. 1, 6. 7, 5. 9 and 7 fruits for the first generation of 2011 and 242, 228, 201, and 238 ovi sacs per branches with an average number 7. 1, 6. 68, 5. 88 and 7. 01 fruits for the first generation of 2012, as well as 203, 191, 168 and 200 ovisacs per branches with an average number 7. 1, 6. 68, 5. 88 and 7. 01 fruits for the second generation of 2012, for ethion, chlorpyrifos, buprofezin and diazinon pesticides, respectively.

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APA: Copy

Amozegar, Ahmad Reza, DAMAVANDIAN, MOHAMMAD REZA, & AMIRI BESHELI, BEHNAM. (2017). Determination of economic injury level of the citrus cushion, Pulvinaria aurantii (Hem.: Coccidae) in conventional citrus orchards. IRANIAN JOURNAL OF PLANT PROTECTION SCIENCE (IRANIAN JOURNAL OF AGRICULTURAL SCIENCES), 47(2 ), 313-323. SID. https://sid.ir/paper/171708/en

Vancouver: Copy

Amozegar Ahmad Reza, DAMAVANDIAN MOHAMMAD REZA, AMIRI BESHELI BEHNAM. Determination of economic injury level of the citrus cushion, Pulvinaria aurantii (Hem.: Coccidae) in conventional citrus orchards. IRANIAN JOURNAL OF PLANT PROTECTION SCIENCE (IRANIAN JOURNAL OF AGRICULTURAL SCIENCES)[Internet]. 2017;47(2 ):313-323. Available from: https://sid.ir/paper/171708/en

IEEE: Copy

Ahmad Reza Amozegar, MOHAMMAD REZA DAMAVANDIAN, and BEHNAM AMIRI BESHELI, “Determination of economic injury level of the citrus cushion, Pulvinaria aurantii (Hem.: Coccidae) in conventional citrus orchards,” IRANIAN JOURNAL OF PLANT PROTECTION SCIENCE (IRANIAN JOURNAL OF AGRICULTURAL SCIENCES), vol. 47, no. 2 , pp. 313–323, 2017, [Online]. Available: https://sid.ir/paper/171708/en

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