Ghanim, A., Awadalla, S., Abd Allah, F., Abdel-Aziz, A. (2018). The Economic Thresholds and Injury Levels for the English Grain Aphid, Sitobion avenae (F.) (Hemiptera- Aphididae) on Wheat Crop. Journal of Plant Protection and Pathology, 9(2), 93-95. doi: 10.21608/jppp.2018.41254
A. A. Ghanim; S. S. Awadalla; F. E. Abd Allah; A. A. Abdel-Aziz. "The Economic Thresholds and Injury Levels for the English Grain Aphid, Sitobion avenae (F.) (Hemiptera- Aphididae) on Wheat Crop". Journal of Plant Protection and Pathology, 9, 2, 2018, 93-95. doi: 10.21608/jppp.2018.41254
Ghanim, A., Awadalla, S., Abd Allah, F., Abdel-Aziz, A. (2018). 'The Economic Thresholds and Injury Levels for the English Grain Aphid, Sitobion avenae (F.) (Hemiptera- Aphididae) on Wheat Crop', Journal of Plant Protection and Pathology, 9(2), pp. 93-95. doi: 10.21608/jppp.2018.41254
Ghanim, A., Awadalla, S., Abd Allah, F., Abdel-Aziz, A. The Economic Thresholds and Injury Levels for the English Grain Aphid, Sitobion avenae (F.) (Hemiptera- Aphididae) on Wheat Crop. Journal of Plant Protection and Pathology, 2018; 9(2): 93-95. doi: 10.21608/jppp.2018.41254
The Economic Thresholds and Injury Levels for the English Grain Aphid, Sitobion avenae (F.) (Hemiptera- Aphididae) on Wheat Crop
1Economic Entomology, Faculty of Agriculture, Mansoura University, Egypt.
2Plant Protection Research Institute, Agriculture Research Center, Dokki, Egypt.
Abstract
A yield loss 28.66, 47.35, 61.77 and 79.86% caused due to introduce 1, 3, 5 and 7 individuals/ spike of aphid species Sitobion avenea Fabricius (Hemiptera- Aphididae) as abundant wheat insect pests to fifteen tillers under cages. A market price of 2017 the wheat crop (420 E.L/Aradab) and costs of control measures 90 E.L/feddan was standard, during flowering and heading stage. The calculated economic injury level (EIL) and economic threshold (ETL) in average were 7.03 and 2.26 aphid/ spike/ feddan, respectively. Calculated gain threshold was 0.21 Ardab/feddan.
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