Mansoura University, Faculty of AgricultureJournal of Plant Protection and Pathology2090-367711120200101Comparison of Insecticidal Efficiency, IGRs, Certain Oils and their Binary Mixtures against, Spodoptera littoralis (Boisd)147915810.21608/jppp.2020.79158ENA. R.El- GabalyPlant Prot. Res. Inst., Dokki, Giza, EgyptJournal Article20200326Toxicity of certain insecticides Emamectin benzoate (E) IGRs, Diflorate (D) 25%, Grand (G) 5% EC, mineral oil KZ oil (KZ) and plant oil Garlic oil (GO) were tested against strain producer laboratory of 4<sup>th</sup> larvae instar of <em>Spodoptera littoralis </em>(Boisd) The LC<sub>50</sub>, LC<sub>25</sub> and LC<sub>10</sub> were calculated for all treatments. The mixtures results may be arrangement in categories as following; 1. Mixtures showed that highest potential action by the lowest concentration of LC<sub>25</sub>+ LC<sub>10</sub> (E+D), LC<sub>25</sub>+ LC<sub>10</sub> (E+ G), LC<sub>10</sub>+ LC<sub>25</sub> (E+ G), LC<sub>25</sub>+ LC<sub>10</sub> (E+ Kz), LC<sub>10</sub>+ LC<sub>25</sub> (D+ G), LC<sub>10</sub>+ LC<sub>25</sub> (D+ Kz), LC<sub>10</sub>+ LC<sub>10</sub> (G+ G) and LC<sub>10</sub>+ LC<sub>25</sub> (G+ Kz); 2. Mixtures revealed that antagonism action LC<sub>10</sub>+ LC<sub>50</sub> (E+ D), LC<sub>10</sub>+ LC<sub>25</sub> (E+ G), LC<sub>10</sub>+ LC<sub>50</sub> (E+ Kz), LC<sub>25</sub>+ LC<sub>50</sub> (G+ G) and LC<sub>25</sub>+ LC<sub>50</sub> (G+ Kz); 3. Mixtures cleared that additive effective LC<sub>25</sub>+ LC<sub>50</sub> (E+ D), LC<sub>50</sub>+ LC<sub>10</sub> (E+ G), LC<sub>25</sub>+ LC<sub>25</sub> (E+ G), LC<sub>50</sub>+ LC<sub>50</sub> (E+ Kz), LC<sub>50</sub>+ LC<sub>25</sub> (D+ G), LC<sub>25</sub>+ LC<sub>25</sub> (G+ G) and LC<sub>50</sub>+ LC<sub>25</sub> (G+ Kz) though, use IGRs, plant or mineral oils, compounds in binamy as a mixture with little concentrations, it has been shown to be effective in controlling of <em>S. littoralis</em>.<br /> https://jppp.journals.ekb.eg/article_79158_1c867a6ba8603beef6b6cd82ed45180b.pdfMansoura University, Faculty of AgricultureJournal of Plant Protection and Pathology2090-367711120200101Role of Triacontanol Hormone (TRIA) on the Control of Aphis Gossypii Glover on Cucumber Plants under Greenhouse Conditions586759810.21608/jppp.2020.67598ENSamia A.YassinPlant Protection Research Institute, A.R.C., Dokki, Giza, EgyptJournal Article20200106This study was carried out to study effect of treated cucumber plants var. <em>Cucumis sativus</em> L. by different concentrations of Triacontanol Hormone (TRIA) on the infestation by <em>Aphis gossypii </em>Glover at two locations (governorates), Giza overnorate and Qaluobiya Governorate during 2018 season under glasshouse conditions. Also, this study was carried out to study effect of treated cucumber plants by the same concentrations of (TRIA) hormone on the morphological characteristics and internal components of treated cucumber plants. This study was carried out on three concentrations of Triacontanol Hormone, (25ppm), (35ppm) and (55ppm), beside fourth treatment which did not treat with any hormone (control). Results obtained showed that cucumber plants which treated with small concentration of (TRIA) (25ppm) were lower infestation by <em>A. gossypii</em> comparing to control. While cucumber plants which treated with medium concentration of (TRIA) (35ppm) were had no significant differences in the infestation by the same insect compared to control, on the other hand cucumber plants which treated by high concentration of (TRIA) (55ppm) were higher infestation by the aphid compared to control. <br /> https://jppp.journals.ekb.eg/article_67598_8ba147beedd9869042ee44264e9f3ec4.pdfMansoura University, Faculty of AgricultureJournal of Plant Protection and Pathology2090-367711120200101Impact of storage period on different types of bee pollen pigments9136817810.21608/jppp.2020.68178ENAsmaa E.Abd AllaDept. Economic Entomology and Pesticides, Fac. Agric., Cairo Univ., 12613 Giza1Rasha A.SalemBee Res. Dep., Inst. Plant Protec. Res., Agric. Res. Center, Giza, EgyptJournal Article20200114Pigments are anti-oxidants, which play an important role in protecting against many diseases. In this study, pigments of different bee pollen types (Sunflowers, Clover, Sesame and Maize) were determined with ethanol solvent and stored under freeze condition. Sunflower bee pollen had the highest amounts of the studied 23 pigments except three pigments. Maize bee pollens were superior to sunflower bee pollen in its content of the three exception pigments (Isozeaxanthin, Zeaxanthin and B- Zeaxanthin). In Sunflower bee pollen there were no significant differences between fresh bee pollen and those stored for 6 months in most of pigments as compared with 12 months storage. Sunflower bee pollen either fresh or stored for 6 months produced the highest values of Isozeaxanthin, Lutein, Lycopene, Violaxanthin, Zeaxanthin, 8- APO- B- Carten- 8- al, α – Carotene, ß – Carotene and γ – Carotene compared to 12 months storage. However pigments of clover or sesame bee pollen were the lowest compared to sunflower and maize.https://jppp.journals.ekb.eg/article_68178_497c9ee141a848974ff9aab1bf1555ee.pdfMansoura University, Faculty of AgricultureJournal of Plant Protection and Pathology2090-367711120200101Population Fluctuation of the Green Peach Aphid, Myzus persicae (SULZ.) (Homoptera: Aphididae) infesting Canola Plants at Assiut Area15187915910.21608/jppp.2020.79159ENEman F. M.TolbaPlant Prot. Dept., Faculty of Agric, New valley University, New valley, Egypt.Journal Article20200326Population fluctuation of the green peach aphid were conducted at Assiut area. Results showed that the activity of the green peach aphid was first recorded on 22 December 2016 and 2017 (3.24 and 6.20 aphids / plant) and reached its peaks during the first week of February and last week of January (33.62 and 48.76 aphids / plant) toward bud and flowering stages. Population model using the meteorological data indicated that plant age and parasitoids were important biotic factors in the population development of <em>M. persicae, </em>followed by minimum air temperature and maximum relative humidity.<br /> https://jppp.journals.ekb.eg/article_79159_daae5e886ad7c1eb8dc7e1c887a5280e.pdfMansoura University, Faculty of AgricultureJournal of Plant Protection and Pathology2090-367711120200101Influence of Potassium Fertilization on Certain Homopterous Insects Infestation and Relationship with Chemical Constituents and Cell Thickness of Maize Plants19236891710.21608/jppp.2020.68917ENOla I. M.HegabPlant Prot. Dept., Fac. Agric., Zagazig Univ., EgyptM. A. M.HagabPlant Prot. Dept., Fac. Agric., Zagazig Univ., EgyptJournal Article20200122The present work was conducted during 2017 and 2018 seasons in Diarb-Nigm district at Sharhia Governorate, Egypt to study the effect of four rates of potassium fertilization (0, 24 , 48 , 72 Kg. K2o / fed.) on maize infestation with certain piercing-sucking insects such as aphids, <em>Rhopalosiphum maidis</em> and <em>R. padi</em>, leafhoppers and planthoppers , <em>Empoasca decipiens, E.decedens, Balclutha hortensis, Cicadulina chinai</em>,<em> C. bipunctella</em> , <em>Sogatella vibix and S. furicefera</em> and relationship with the chemical components and epidermal cells thickness of maize plant leaves. The results showed significant differences in the population density of the aforementioned insects of the tested rates of potassium fertilization, whereas, the highest mean numbers of their insects were recorded at the rate of F1(zero Kg. K2o /fed.), while the least mean numbers of the aforementioned insects occurred at the rate of F4(72 Kg. K2o / fed.). In addition, the results of some chemical analyses revealed that a positive relationship between total protein, carbohydrates contents, k values and the epidermal cell thickness and aforementioned rates of potassium fertilization. While, a reverse relationship was recorded between pH values and potassium fertilization. Also, the fertilization influenced significantly on six amino acids; aspartic, glutamic , glycine , alanine , isoleucine and leucine, which affected the attractive of these insect species, which may explain the decreasing in numbers of the insects by increasing the rates of fertilization. According to these results, the potassium fertilization should be recommended as effective factor in the integrated pests control program.<br /> https://jppp.journals.ekb.eg/article_68917_af6ada0e4d94721d9c72fceea302867c.pdfMansoura University, Faculty of AgricultureJournal of Plant Protection and Pathology2090-367711120200101Garlic, Allium sativum L. and Onion, Allium cepa L. as a Potent Anti-mite Varroa destructor, Parasited on Honey Bee, Apis mellifera L. in Egypt.25288242510.21608/jppp.2020.82425ENA. R.MazeedPlant Protection Research Institute, ARC, Dokki, Giza, Egypt.E. A.El-SolimanyPlant Protection Research Institute, ARC, Dokki, Giza, Egypt.Journal Article20200414The parasitic mite, <em>Varroa</em><em> destructor</em> is one of the most important pests attacking apiaries all over the world. The aim of work is to evaluate the effects of fresh garlic, onion, mix of them, garlic oil and onion oil against <em>Varroa </em>mite in the honey bee colonies in Sohag Governorate. Data revealed that, all tested materials were effective when compared with control. The treatment with fresh garlic led to the highest percentage of fallen <em>Varroa</em> mite with 94.29% of the total Varroa presented in the bee colony, followed insignificantly by the mixture of garlic and onion (93.60%), garlic oil (91.55%) and onion oil (89.91%), however, the lowest percentage was recorded in fresh onion treatment with 85.33% of the total Varroa presented in the bee hive. Also, it is clear that the highest reduction percentage was recorded after the first application in all materials, the number of applications needed to satisfactory Varroa control differed depending on material type.<br /> https://jppp.journals.ekb.eg/article_82425_0bbc28b89b1fb00c1d2eb7ac0e0e3868.pdfMansoura University, Faculty of AgricultureJournal of Plant Protection and Pathology2090-367711120200101Efficiency of Certain Bio-Insecticides for Reducing the Yield Losses due to the Bean Pod Borer, Etiella zinckenella (Treitschke) in Soybean Fields29367916010.21608/jppp.2020.79160ENSoheir F.Abd El-RahmanPlant Prot. Res. Inst., Agric. Res. Center, Dokki, Giza, EgyptEman IAbdel-wahabField Crops Res. Inst., Agric. Res. Center, Giza, EgyptJournal Article20200326The pod borer <em>Etiella zinckenella</em> (Treitschke) is most destructive insect which infest crops of leguminosae in Egypt. Field experiments were carried out in farm of Agricultural Research Center, Giza governorate during 2017 and 2018 seasons. First experiment was conducted to study seasonal incidence of this insect on soybean and its relation with weather factors under natural conditions. In first season, the larval population increased to make two peaks, that recorded in the 1<sup>st</sup> and 3<sup>rd</sup> weeks of September. In second season found one peak on September, 4<sup>th</sup>. The relationship between population fluctuation and three climatic factors (minimum and maximum temperatures& R.H. %) were studied. Simple correlation of Max. and Min. temperatures were negative but R.H.% gave positive effects. The second experiment was conducted to evaluate efficacy of Biover, MgChl and Dipel 2xfor control of this insect under field conditions in addition the yield. Results showed that, mean reduction of larvae for highest concentrations of tested treatments were arranged descendingly as Biover (63.04%) followed by MgChl (55.52%) and finally Dipel 2x (51.28%) with significant differences between treatments compared with control. Also, depending on highest concentration, Biover was the superior in this respect being registered 45.71% increasing in the yield over the control value followed by MgChl (42.39 %) and Dipel 2x (36.19%). Maximum net return was obtained from Biover (4g/L) (4262.92 /fed.) followed by Biover (2g/L) (4172.92/fed.) and Diple 2x (4g/L) (3749.59/fed.). Biover and MgChl gave highest reduction in population of this insect and best seed yield.<br /> https://jppp.journals.ekb.eg/article_79160_3b3c611d41ce14e6601034461a4c3850.pdfMansoura University, Faculty of AgricultureJournal of Plant Protection and Pathology2090-367711120200101Direct and Indirect Impact of Artemisia judaica Extract on Euseius scutalis37407916110.21608/jppp.2020.79161ENM. A.NawarAnimal Pest Unit, Plant Protection Department, Desert Research Center.Iman I.ImamEconomic Entomology Unit, Plant Protection Department, Desert Research Center.Journal Article20200326The potential of extract of <em>Artemisia Judaica</em> L. against the predator <em>Euseius scutalis</em> (Athias-Henriot) and two kinds of prey that fed on them, first-instar nymphs of whitefly and second instar larvae of onion thrips, The results showed that, the effect of extract on<em> B. tabaci</em> nymphs recorded great decline in the rate of mortality to 26.8% compared to 81.6% respectively; The same results on <em>T. tabaci</em> larvae were increased from 23.95% to 77% respectively, by increasing the applied concentration from 125 to 2000 ppm., while when newly emerged <em>E. scutalis</em> adult treated with the same concentration of extract increased total percent mortality such increase was concentration dependent. Indirect exposure technique of is more effective than the direct exposure technique. Therefore, when using the plant extract and the predator in one control program is recommended to spray the extract first and then release the predator about 48 hours later.<br /> https://jppp.journals.ekb.eg/article_79161_4a289c2532d99c27bbbaf62fe3b3f875.pdfMansoura University, Faculty of AgricultureJournal of Plant Protection and Pathology2090-367711120200101Effect of different Vegetable Crops on the Population Density of the Cotton Mealybug Phenacoccus solenopsis (Tinsley) (Hemiptera: Pseudococcidae) in Mansoura Region41457916210.21608/jppp.2020.79162ENFarha H.FargallaPlant Protection Research Institute, Agricultural Research Center, Giza, EgyptJournal Article20200326The experiments were carried out at private farm belonging to Mansoura region. Four host plants from different vegetable families were chosen as eggplant (Solanaceae), squash (Cucurbitaceae), okra (Molvaceae) and cowpea. (Leguminosae). The population density of the cotton mealybug, <em>Phenacoccus</em> <em>solenopsis</em> (Tinsley) (Hemiptera: Pseudococcidae)recorded the highest peaks of abundance on okra plants during the two successive seasons 2018 and 2019 and presented by 341 and 397individuals in the third week of October 2018 and in the second week of October 2019, respectively. Moreover, on squash plants the highest peaks were recorded in the third week of October 2018 and in the second week of October 2019 and represented by 209 and 263, individuals respectively. Meanwhile, on eggplant, the highest peaks were recorded in the second week of October 2018 and in the third week of October 2019 and represented by 134 and 207 individuals, respectively. While, the population of the insect pest showed the highest peaks on cowpea plants in the fourth week of October in the two seasons and represented by 119 and 142 individuals, respectively. The highest average numbers of the insect pest on different vegetable crops were recorded in October for all tested host plants during the two successive seasons 2018 and 2019. Okra as vegetable host plant recorded the highest average number followed by squash, eggplant and cowpea with significantly differences during the two seasons. Also, okra attracted the highest total numbers of the insect during the two seasons.<br /> https://jppp.journals.ekb.eg/article_79162_a9ea710a73040c4c6a66461cb809263a.pdfMansoura University, Faculty of AgricultureJournal of Plant Protection and Pathology2090-367711120200101Estimation of the Chitin Deposition in the Integument of the Mulberry Silkworm, Bombyx mori Larvae by using the Acetone Extracts of Moringa, Grape and Mulberry and its effect on Technological Characteristics47527916310.21608/jppp.2020.79163ENEnas M. Y.ElyamaniPlant Protection Research Institute, Agricultural Research Center, Dokkii 12622, EgyptM. S. I.SaadPlant Protection Research Institute, Agricultural Research Center, Dokkii 12622, EgyptSamah N.ElshafeiyPlant Protection Research Institute, Agricultural Research Center, Dokkii 12622, EgyptJournal Article20200326Effect of acetone extracts of grape branches, grape leaves, moringa and mulberry leaves on chitin deposition in mulberry silkworm larvae were studied. As well as the effect of those extracts on the characteristics of cocoons and silk threads were studied. Two concentrations were used (20 and 40%) of the extracts and sprayed on the mulberry leaves offered to larvae at the second day of fifth larval instar. Moringa leaves extract caused the most significant reduction in chitin deposition, especially after 120 h. While grape leaves extract gave increase in chitin deposition at all times in both tested concentration. In addition, the grape sticks extract gave the same effect in concentration 20% but, chitin reduction noticed in concentration 40% after 120 h. The results indicated that applying acetone extract of grape branches and moringa leaves at 20 % and grape leaf extract at 40 % to mulberry leaves recorded the highest fresh cocoon weight and cocoon shell weight. Grape leaves extract at 20 % and grape branches extract at 40 % increased the silk ratio. The highest length of silk threads obtained from silkworm larvae fed mulberry leaves treated with grape branches at 20 and 40 %. The acetone extracts of grape leaves, grape branches and mulberry leaves at concentration 20 % increased the silk filament weight and size. Conclusion: using acetone extracts of grape leaves and branches and moringa leaves in terms of juvenoids is a potent tool for improving silkworm performance and cocoon characters, which resulted in the production of high raw silk yield.<br /> https://jppp.journals.ekb.eg/article_79163_6d1a8f5e0553adf310f13761242bc907.pdfMansoura University, Faculty of AgricultureJournal of Plant Protection and Pathology2090-367711120200101Insecticidal Activity of Radish, Raphanus sativus Linn. (Brassicaceae) Roots Extracts.53587916410.21608/jppp.2020.79164ENHeba Y. E.IbrahimPlant Protection Research Institute, Agricultural Research Center (ARC), Dokki, Giza, 12618, Egypt.M. Abdel-MogibChemistry Department, Faculty of Science, Mansoura University, Mansoura, 35516, EgyptM. El.MostafaPlant Protection Research Institute, Agricultural Research Center (ARC), Dokki, Giza, 12618, Egypt.Journal Article20200326Chemical constituents of <em>Raphanus sativus</em> Linn. roots were extracted and tested for their toxicity against adults and second instar nymphs of <em>A. gossypii</em> under laboratory conditions. The most effective fraction against both adults and nymphs was methylene chloride fraction with LC<sub>50</sub> values of 386.63 and 309.43 ppm, followed by ethyl acetate fraction with LC<sub>50</sub> values of 394.9 and 334.37 ppm then petroleum ether fraction with LC<sub>50</sub> values of 636.2 and 424.56 ppm, for adults and nymphs, respectively. Also, the volatile components of each fraction were qualitatively and quantitatively identified and characterized by GC/MS technique. Moreover, the impact of the sub-lethal concentrations of <em>R. sativus</em> roots extracts on transaminases and alkaline phosphatase of <em>A. gossypii</em> was studied. Great inhibition of all tested enzymes activity was observed. This suggested the high potency of <em>R. sativus</em> roots extracts as environmentally friendly alternatives of traditional insecticides.<br /> Chemical constituents of <em>Raphanus sativus</em> Linn. roots were extracted and tested for their toxicity against adults and second instar nymphs of <em>A. gossypii</em> under laboratory conditions. The most effective fraction against both adults and nymphs was methylene chloride fraction with LC<sub>50</sub> values of 386.63 and 309.43 ppm, followed by ethyl acetate fraction with LC<sub>50</sub> values of 394.9 and 334.37 ppm then petroleum ether fraction with LC<sub>50</sub> values of 636.2 and 424.56 ppm, for adults and nymphs, respectively. Also, the volatile components of each fraction were qualitatively and quantitatively identified and characterized by GC/MS technique. Moreover, the impact of the sub-lethal concentrations of <em>R. sativus</em> roots extracts on transaminases and alkaline phosphatase of <em>A. gossypii</em> was studied. Great inhibition of all tested enzymes activity was observed. This suggested the high potency of <em>R. sativus</em> roots extracts as environmentally friendly alternatives of traditional insecticides.<br /> https://jppp.journals.ekb.eg/article_79164_f9eb366d602e185570765cdfba6f8d1a.pdf