Journal
[Total: 650 ]
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Mohamed El-Sayed, Heba Eid Ali, Samy Al-Badawy, Ahmed Abdel Ghani,
2012
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Insecticide and repellent activity of an acetone extract and oil from fresh leaves of Pelargonium x hortorum (cv. Orangesonne) were evaluated against the 2nd and 4th instar larvae of Spodoptera littoralis (Boisd.) (Lepidoptera: Noctuidae). The oil showed medium toxicity against the 2nd instar and low toxicity against the 4th instar larvae, while the extract showed high signifi cant toxicity at all concentrations tested against the two instars. On the other hand, both oil and extract exhibited highly signifi cant repellency against the two tested instars. Volatile constituents of the oil were also identified by GC-MS analysis.
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Mahmoud El-Naggar, Essam Abd El- salam Yassin,
2012
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Obtained data shoed that the type of prey and temperature affected significantly on C. eruditus male and female biology. As it prolonged C. eruditus life stages when fed on eggs of Rhizoglyphus robini at 20 ºC, while it was significantly decreased when fed on eggs of Callosbrucus maculates at 30 ºC.there was a significant effect on the predator fecundity when fed on different prey and temperature, as C. eruditus female deposited 49.92 eggs at 30 ºC when fed on R. robini eggs.
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Essam Abd El- salam Yassin, Mamdouh Elsebaay,
2012
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The obtained data included that the different biological aspects of P. martini was significantly affected by different diets (free living nematodes, Rhabditella muscicola Chitwood and two different fungi Fusarium oxysporum and Pithium spinosum) and temperatures. The male lasted shorter time than females in different periods. Female longevity recorded the longest period when it fed on F. oxysporum at 20 ºC (37.21 days) while the shortest longevity period recorded at 35 ºC (12.16 days).The obtained results showed that the best diet for rearing the predatory mite P. martini was F. oxysporum at 25 ºC where it recorded the highest number of deposited eggs (73.79 eggs) but the least favorable one for feeding was the fungus P. spinosum at 35 ºC (48.71 eggs).
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Adel Mostafa, Essam Abd El- salam Yassin, Noura El Sayed,
2012
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The obtained results indicated that all biological aspects of the predator affected significantly by the type of the prey and temperature. The acarid mite, Tyrophagus putrescentiae eggs showed a higher fecundity source than T. putrescentaie immature stages and the eggs of the insect Plodia interpunctella, but the eggs of C. maculates was the lowest favorable one. The predator female during the whole duration period preyed upon the eggs of T. putrescentiae with an average of 109.1 eggs, while the male attacked prey eggs with an average of 53.7 eggs.
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Hassan Hassan Moustafa, AbdEl-Manem Hasaan Mostafa, Wahed Desowky,
2012
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In the present study two experimental trails were carried out to evaluate the efficacy of the food attractant (Buminal 5%) mixture with Dimethoate 40% E.C for controlling the fruit fly, Ceratitis capitata (Wiedemann) on mango orchard at Ismailia Governorate, Egypt during 2009 and 2010 by food attractant traps (traps baited) and partial spray for trees trunk in the experimental trails. Results showed that the mean reductions percentages by using Henderson and Tilton (1955) formula for both periods were 55.1 & 64.7 & 72.5 & 90.4 and 63.5&71.8& 73.1 & 82.5 respectively. Mean percentage of reductions during the same periods 2009 and 2010 were 70.7 and 72.7 %, respectively. Regarding the second experiment data showed that the total number of percent reduction for both years 2009 and 2010 were 56.5 & 71.0&80.6 & 78.3 and 60.9 & 64.0& 69.8 & 89.8% respectively, the mean percent of reduction were 71.6% and 71.1%, respectively.
The statistically analysis L.S.D.0.05 (P ˂0.05) showed that a positive significant and highly significant correlation for traps baited which values were 10.16 and 15.57 during the same periods. Also, a positive highly significant effect for partial spray were 9.06 and 11.22 during 2009 and 2010, respectively.
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Hassan Hassan Moustafa, AbdEl-Manem Hasaan Mostafa,
2012
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Ecological studies on Aulacaspis tubercularis (Newstead) (Diaspididae: Hemiptera) and its associated natural enemies were carried out during two successive years (2007-2008 and 2008-2009) in Inshas El- Raml district, Sharkia Governorate, Egypt. The obtained results revealed that the total number of alive stages had one peak of activity yearly in both top and bottom levels of the trees. Aphytis sp. and Encarsia sp. (Aphelinidae), Habrolepis diaspidi (Risbec) (Encyrtidae) were recorded as parasitoids of A. tubercularis. Cybocephalus micans Reitter (Nitidulidae) was recorded as predator of A. tubercularis. The total effects of a biotic factors (Temperature ºC, Relative humidity RH% and Light intensity Lux) under this study on the total numbers of alive stages of the pest during the two years were 63.19 and 40.20 % in the top level and 77.66 and 39.44 % in the bottom one, successively. The pest activity appeared three annual generations in either the top and bottom levels of mango trees. Preferable level, preferable leaf surface, distribution of A. tubercularis and its associated natural enemies were studied.
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AbdEl-Manem Hasaan Mostafa, Hassan Hassan Moustafa,
2012
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Studies on some ecological aspects of Kilifia acuminata (Signoret) and its associated parasitoids on mango trees were carried out in Inshas El- Raml district, Sharkia Governorate, Egypt during two successive years (2007-2008 and 2008-2009). The obtained results revealed that total alive stages had two to three peaks of activity yearly in both top and bottom levels of the trees. Metaphycus sp. and Coccophagus sp. were recorded as parasitoids of K. acuminata. The pest activity appeared three generations annually either in the top and bottom levels of mango trees. Each generation was lasted about 4 months. They periods were from March to June, July to October and November to February, respectively. The total effects of a biotic factors (Temp.ºC, RH% and Light intensity Lux) under this study on the total numbers of alive stages during the two years were 84.17 and 38.30 % in the top level and 85.87 and 43.76 % in the bottom one, successively. Preferable level and preferable leaf surface of K. acuminata and its associated parasitoids were studied.
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Hassan Hassan Moustafa,
2012
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The present study was conducted at Plant Protection Research Institute – Sharkia branch during two successive years 2011 and 2012, to evaluate the effects of some foliar fertilizers on the biology of silkworm, Bombyx mori L. Fetrilon Combi 2 (75gm/100 L), Foliar Nitrophoska (50gm/100 L) and Urea 46% (100gm/100 L) were sprayed on mulberry trees leaves and fed to the 4th instars larvae. Treated leaves with Urea induced the highest larval & pupal weight, fecundity and fertility followed by Fetrilon Combi 2 and Nitrophoska. However, larval duration did not affect by different doses. Moreover, Fetrilon Combi 2 treatments showed the highest cocooning percentage. Nitrophoska treatments showed the highest mean of silk gland weight.
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Mona Mohamed Ahmed, Mohamed Shedeed,
2012
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Field studies were carried out to evaluate susceptibility of five varieties of Phaseolus vulgaris L, (Bronco, Nerina, Xera, Savana and Alicante) to infestation with legumes aphid, Aphis craccivora as one of the main pests causing a great damage to bean plants and subsequently with virus diseases and its effect on the resultant yields. This work was conducted during summer and nili plantation seasons of 2010 and 2011. The results revealed that, tested common bean varieties showed significant differences between means of their infestation levels by A. craccivora. Alicante variety was the most tolerant to aphid infestation, while Bronco variety was the highest susceptible. Concerning virus diseases (yellow mosaic virus "BYMV" and common mosaic virus "BCMV"), Alicante variety was almost immune, while Bronco and Nerina varieties were highly susceptible to infection. So, Bronco and Alicante varieties gave the highest green yield, while Xera variety gave the lowest weight of green pods. Therefore, it was conclude that, Alicante variety recorded the least infestation, more tolerant to virus infestation and heaviest green pods yield.
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Mohamed Soliman, Mona Mohamed Ahmed, Mohamed Shedeed,
2012
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Field experiments were conducted to evaluate the initial and residual effects of Biofly, Beauveria bassiana and Actra efficiency on the whitefly, Bemisia tabaci (Genn.) by using three sprayer types, knapsack motor sprayer (Arimitsu 25 L/fed.) Conventional sprayer (200 L/fed.), and Rotary sprayer Micron ULV (15 L/fed.) in Mitawa Village, Fakous district in Sharkia Govemorate, Egypt during tomato summer plantation of 2010 season. Results showed that Actra ¾ recommended rate by using Conventional sprayer after three days of the 1st and the 2nd sprays proved to be the most effective against B. tabaci adults (87.5% and 93.5%) reduction, respectively followed by Actra recommended rate and ¾ recommended rate by using Rotary micron ULV sprayer after the 1st spray recorded the same reduction percentage 79.4. Actra recommended rate occurred highest initial effect after three days from the 1st and the 2nd sprays against B. tabaci eggs showing 95% and 94% reduction, respectively, with Conventional sprayer. In general, the average of residual effect after the 1st and the 2nd sprays was significantly different between the tested materials and untreated. It could be concluded that controlling B. tabaci depends mainly on the efficacy of the used insecticide and the sprayer type.
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