planococcus citri pdf
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0000000016 00000 n 0000405489 00000 n The development time, parasitization rate, and death ratio were determined by daily observation. The highest per capita growth rate (rm. the climate chamber 25±1 ºC, 65-70 % RH, and 16:8 (L:D) h photoperiod. The most common species was Chilocorus bipustulatus (620), followed by Coccinella septempunctata (308). 0000004775 00000 n D’abord replacée dans le genre The average reproduction rate per female (Ro) was 47.1 aphids/ aphid at 25 °C and 1.5 aphids/aphid at 30 °C. mealybugs. Line is the linear regression analysis of developmental rate and temperature within the range of 15 to 27.5°C, . The highest number of eggs was obtained from Washington navel with 87.2 egg/female while 84.8 egg/female on Star Ruby. The population demographic parameters of Pl. Some Biological Parameters of Planococcus citri on Differnt Citrus Species, Population Fluctations of Planococcus citri (Citrus Mealybug) in the Eastern Mediterranean Region, Akdeniz ve Ege Bölgesindeki turunçgil bahçelerinde tespit edilen faydalı türler. For the study, 10 trees were randomly chosen from each orchard and the individuals on the plants, 4 branches, and stem of each tree were counted to determine the population level. 0000010941 00000 n endstream endobj 168 0 obj <>/Metadata 48 0 R/Pages 47 0 R/StructTreeRoot 50 0 R/Type/Catalog/ViewerPreferences<>>> endobj 169 0 obj >/PageWidthList<0 612.0>>>>>>/Resources<>/ExtGState<>/Font<>/ProcSet[/PDF/Text/ImageC]/XObject<>>>/Rotate 0/StructParents 0/TrimBox[0.0 0.0 612.0 792.0]/Type/Page>> endobj 170 0 obj [171 0 R 172 0 R] endobj 171 0 obj <>/Border[0 0 0]/H/N/Rect[237.136 140.86 317.451 130.643]/StructParent 16/Subtype/Link/Type/Annot>> endobj 172 0 obj <>/Border[0 0 0]/H/N/Rect[227.592 130.66 368.911 120.443]/StructParent 17/Subtype/Link/Type/Annot>> endobj 173 0 obj <> endobj 174 0 obj <> endobj 175 0 obj <> endobj 176 0 obj [/ICCBased 196 0 R] endobj 177 0 obj <> endobj 178 0 obj <> endobj 179 0 obj <> endobj 180 0 obj <>stream As the result of the treatment process, it is observed that the predator S. pygmaeus succeeded in decreasing the population of P. citri under economic damage threshold level. In the citrus groves in Turkey, 89 pests, 34 diseases, 16 nematodes and 155 weed species have been determined until 2007. When reared on 41-B Side effect of pesticide on benificail insect. Of all alternative methods, growth of cultivars preferred less by the pest plays an important role. Inhibition Studies of Cellulolytic Activities Isolated from Planococcus Citri The least common species were Scymnus apetzia Mulsant and Hyperaspis quadrimaculata Redtenbacher. This study was conducted to evaluate efficiency of biological and chemical control methods against citrus mealybug, Planococcus citri Risso (Hemiptera:Pseudococcidae), caused important economic losses in the east Mediterranean region of Turkey. The preadult duration of females Pl. Join ResearchGate to find the people and research you need to help your work. This study has provided the basic information about the general characteristics of the Generation time of Planococcus citri was continued as 28.6 days on Washington navel, 28.2 days on Interdonata and 29.2 days on Star Ruby, while no egg were obtained on Okitsu Wase. citri on grapevine 41-B variety estimated by using the bootstrap techniques were presented in Table 2. 0000003113 00000 n 15 days between November-December, and once a week between April- October. �0'2�;pK0�0�_`y�p���f7���U��28,�`0f`iY��� "(����IP�A+��f/��,J��� ���!�A��y�A| �.� ��d���0�`�f`Q`�`h`�@\]�j%P�00�n�2�l5B���q\hY)x���清� (Hemiptera: Pseudococcidae)’nin sabit ve değişken. Mealybug population on fruit reached to first peak point on June 26 with 15 individual per tree, second peak point on July 31, third peak point on August 23 (9 individual), and last peak point on September 25 with 18 individual in Kozan in 2013. This study has been conducted in citrus orchards at Çukurova University Faculty of Agriculture Department of Plant Protection implementation and application farm during June-August of 2013. Shortest developmental time was measured on Washington navel orange with 20.2 days, while 20.8 days on Interdonata and 22.5 days on Star Ruby. Citrus production areas in Turkey have risen from 40.000 ha in 1970 to around 96.000 ha in 2005 with the rate of 2.45% increase annually. However, there were a slightly differences between second nymphal stage development times between varieties like Okitsu 8.4, Star Ruby 7.7 Interdonata 5.7 and Washington navel 5.0 days. The aggregate percentage of encapsulated eggs Second year’s population was similar to the first year but it was lower than the first year. All rights reserved. Ten trees selected each determined orchards and main stem, branch and fruits of these trees were controlled and number of mealybug were counted every, Binodoxys angelicae (Haliday) (Hym. Four grapefruit orchards from Erdemli (Mersin), Sarıçam, Kozan, Yüreğir (Adana) were used for this study. The majority of species identified in the study was determined from citrus gardens in the Aegean region. The assessments were done at the 1, 3, 5 and 7 DAA (Days After Application) according to the number of live individuals and larval weight. Planococcus citri (Risso) (Hemiptera: Pseudococcidae) is one of the most significant pests for especially citrus, crop plants and ornamental plants. It is determined that summer oil and spirotetramat are compatible with natural enemies. 0000408904 00000 n �X��D�������V�J[�x]�s�]@e���ᤵ���K9M �s���&�����LJ P���+:::��!s��3������Hk �;XD�A����a��^���!��k�F�u � (Hymenoptera: Encyrtidae) were applied under grower conditions against mealybug. 0000005989 00000 n The highest average number of natural enemies for each treatment was determined as 20.57 individuals, of Chrysoperla carnea (Stephens) (Neuroptera: Chrysopidae), C. montrouzieri, and Scymnus spp. The average longevity of adult females was reduced from 16.3 days at 15 °C to 9.8 days at 30 °C. Consequently, Citrus mealybugs may complete the fourth generation depending on climatic factors, also may overwinter in different stages of the fifth generation during this study were determined. The longest duration for the second nymph stage was obtained at 15°C with 25.7 and 22.5 d for females and males, respectively. These results for P. citriculus were used to calculate the effective cumulative temperature for each developmental stage. 0000001199 00000 n Although the mummies have been observed at 12°C, no adult was obtained, while no development was observed at 32°C. population projection showed Pl. Citrus mealybug population on fruit reached to fırst peak point on June 19, second peak point on July 20, third peak point on August 21, and last peak point on September 19 in Sarıçam. The most and the least cultivars preferred by the pest were Yalova İncisi (6.4 eggs, 3.7 larvae) and Flame Seedless (2.0 eggs, 1.1 larvae), re-spectively. males, this time was 6.40±0.83 and 7.10±0.74 days, respectively. In present investigation, De Lotto (1975) subse-quently identified it as Planococcus … = 0.317 aphids/aphid per day) occurred at 25 °C, and the lowest at 30 °C (rm. Studies have been conducted on development of alternative control methods for the pest which is rather difficult to chemically control.
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