Determination of economic injury level of date palm lesser moth, Batrachedra amydraula (Lepidoptera: Batrachedridae) on six commercial date cultivars in Iran
The small date moth Batrachedra amydraula Meyrick (Lepidoptera: Batrachedridae) and other date palm moths are among the most important date fruit pests, causing the date fruits to dry and fall. This study aimed to investigate the relationship between the density of B. amydraula population and the ex...
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| Format: | Article |
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Entomological Society of Iran
2021-02-01
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| Series: | نامه انجمن حشرهشناسی ایران |
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| Online Access: | https://jesi.areeo.ac.ir/article_123863_70cbf11355b096ead73fc8ec2516f8de.pdf |
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| author | M. Latifian A. N. Bagheri M. Amani M. Naseri E. Saboki R. Khademi H. Zohdi |
| author_facet | M. Latifian A. N. Bagheri M. Amani M. Naseri E. Saboki R. Khademi H. Zohdi |
| author_sort | M. Latifian |
| collection | DOAJ |
| description | The small date moth Batrachedra amydraula Meyrick (Lepidoptera: Batrachedridae) and other date palm moths are among the most important date fruit pests, causing the date fruits to dry and fall. This study aimed to investigate the relationship between the density of B. amydraula population and the extent of its injury level as well as between the rate of damage and reduction of date yield indices on six commercial date palm cultivars in five provinces of Iran including Khuzestan, Bushehr, Hormozgan, Kerman and Saystan & Baluchestan durying 2018 and 2019. Production management costs in both chemical and biological control approaches were considered. Also, crop prices in each region were calculated based on a six-month average prediction. Sampling were done at 15-days intervals from May to early September. To this end, four clusters were selected from four different geographical directions of each tree and in each cluster, 25 fruits were checked to determine the number of healthy and infested fruits. Finally, the Norton model was used to calculate EIL under biological and chemical control conditions. Based on the results, the cost of biological control was lower than that of chemical control. The highest cost in both methods was the cost of purchasing the controlling materials. The highest rate of injury (symptoms of nutrition) to the crop was observed in Mazafati cultivar and the lowest one was in Kabkab. Also, the highest crop damage (nutrition losses) caused by pest damage unit was observed in Rabi cultivar and the lowest one was in Kabkab cultivar. In all studied cultivars, the economic injury level in 2018 was lower than 2019 in both chemical and biological control methods. On the other hand, in biological control method in both years and on all cultivars, costs were lower than chemical control method. The highest value of economic injury level in 2019 was estimated for cultivar Sayer in biological control method (1546.1 larva-day) and the lowest one was estimated for cultivar Rabi in chemical control method (13.81 larva-day). |
| first_indexed | 2024-04-11T04:09:36Z |
| format | Article |
| id | doaj.art-64d87ccdc43b4247abd60f9f9ddd8181 |
| institution | Directory Open Access Journal |
| issn | 0259-9996 2783-3968 |
| language | English |
| last_indexed | 2024-04-11T04:09:36Z |
| publishDate | 2021-02-01 |
| publisher | Entomological Society of Iran |
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| series | نامه انجمن حشرهشناسی ایران |
| spelling | doaj.art-64d87ccdc43b4247abd60f9f9ddd81812023-01-01T10:03:03ZengEntomological Society of Iranنامه انجمن حشرهشناسی ایران0259-99962783-39682021-02-0140437138710.22117/jesi.2021.342177.1367123863Determination of economic injury level of date palm lesser moth, Batrachedra amydraula (Lepidoptera: Batrachedridae) on six commercial date cultivars in IranM. Latifian0A. N. Bagheri1M. Amani2M. Naseri3E. Saboki4R. Khademi5H. Zohdi6Date Palm and Tropical Fruits Research Center, Horticulture Science Research Institute, Agricultural Research, Education and Extension Organization (AREEO), Ahvaz, IranَPlant Protection Research Department, Hormozgan Agricultural and Natural Resources Research and Education Center, Agricultural Research Education and Extension Organization (AREEO), IranDate Palm and Tropical Fruits Research Center, Horticulture Science Research Institute, Agricultural Research, Education and Extension Organization (AREEO), Ahvaz, IranPlant Protection Research Department, Kerman Agricultural and Natural Resources Research and Edu-cation Center, Agricultural Research Education and Extension Organization (AREEO), Kerman, Iran.Date Palm and Tropical Fruits Research Center, Horticulture Science Research Institute, Agricultural Research, Education and Extension Organization (AREEO), Ahvaz, IranDate Palm and Tropical Fruits Research Center, Horticulture Science Research Institute, Agricultural Research, Education and Extension Organization (AREEO), Ahvaz, IranPlant Protection Research Department, Kerman Agricultural and Natural Resources Research and Edu-cation Center, Agricultural Research Education and Extension Organization (AREEO), Kerman, Iran.The small date moth Batrachedra amydraula Meyrick (Lepidoptera: Batrachedridae) and other date palm moths are among the most important date fruit pests, causing the date fruits to dry and fall. This study aimed to investigate the relationship between the density of B. amydraula population and the extent of its injury level as well as between the rate of damage and reduction of date yield indices on six commercial date palm cultivars in five provinces of Iran including Khuzestan, Bushehr, Hormozgan, Kerman and Saystan & Baluchestan durying 2018 and 2019. Production management costs in both chemical and biological control approaches were considered. Also, crop prices in each region were calculated based on a six-month average prediction. Sampling were done at 15-days intervals from May to early September. To this end, four clusters were selected from four different geographical directions of each tree and in each cluster, 25 fruits were checked to determine the number of healthy and infested fruits. Finally, the Norton model was used to calculate EIL under biological and chemical control conditions. Based on the results, the cost of biological control was lower than that of chemical control. The highest cost in both methods was the cost of purchasing the controlling materials. The highest rate of injury (symptoms of nutrition) to the crop was observed in Mazafati cultivar and the lowest one was in Kabkab. Also, the highest crop damage (nutrition losses) caused by pest damage unit was observed in Rabi cultivar and the lowest one was in Kabkab cultivar. In all studied cultivars, the economic injury level in 2018 was lower than 2019 in both chemical and biological control methods. On the other hand, in biological control method in both years and on all cultivars, costs were lower than chemical control method. The highest value of economic injury level in 2019 was estimated for cultivar Sayer in biological control method (1546.1 larva-day) and the lowest one was estimated for cultivar Rabi in chemical control method (13.81 larva-day).https://jesi.areeo.ac.ir/article_123863_70cbf11355b096ead73fc8ec2516f8de.pdfdate palmthe lesser date motheconomic injury level |
| spellingShingle | M. Latifian A. N. Bagheri M. Amani M. Naseri E. Saboki R. Khademi H. Zohdi Determination of economic injury level of date palm lesser moth, Batrachedra amydraula (Lepidoptera: Batrachedridae) on six commercial date cultivars in Iran نامه انجمن حشرهشناسی ایران date palm the lesser date moth economic injury level |
| title | Determination of economic injury level of date palm lesser moth, Batrachedra amydraula (Lepidoptera: Batrachedridae) on six commercial date cultivars in Iran |
| title_full | Determination of economic injury level of date palm lesser moth, Batrachedra amydraula (Lepidoptera: Batrachedridae) on six commercial date cultivars in Iran |
| title_fullStr | Determination of economic injury level of date palm lesser moth, Batrachedra amydraula (Lepidoptera: Batrachedridae) on six commercial date cultivars in Iran |
| title_full_unstemmed | Determination of economic injury level of date palm lesser moth, Batrachedra amydraula (Lepidoptera: Batrachedridae) on six commercial date cultivars in Iran |
| title_short | Determination of economic injury level of date palm lesser moth, Batrachedra amydraula (Lepidoptera: Batrachedridae) on six commercial date cultivars in Iran |
| title_sort | determination of economic injury level of date palm lesser moth batrachedra amydraula lepidoptera batrachedridae on six commercial date cultivars in iran |
| topic | date palm the lesser date moth economic injury level |
| url | https://jesi.areeo.ac.ir/article_123863_70cbf11355b096ead73fc8ec2516f8de.pdf |
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