Mansoura University, Faculty of AgricultureJournal of Plant Protection and Pathology2090-36777820160801New Record Of Hymenopterous Parasitoids In Rice Fields5295325120410.21608/jppp.2016.51204ENA. S.HendawyBiological Control Research Department, Plant Protection Research Institute, Agricultural Research CenterA. H.Abdel-SalamEconomic Entomology Department, Faculty of Agriculture, Mansoura UniversityGhada M.Abdel-HamidBiological Control Research Department, Plant Protection Research Institute, Agricultural Research CenterJournal Article20191001Rice ecosystems are rich in natural enemies, particularly parasitoids. The current investigation was carried out at the experimental farm of Rice Research and Training Center (RRTC), Sakha, Kafr El-Sheikh during 2014 and 2015 rice seasons. The objective was to survey hymenopterous parasitoids occurring in rice fields. Specimens were collected from rice nursery and paddy field by sweep net, pitfall trap, water pan trap, light trap and D-vac machine. Thirty-nine species of parasitoids were recorded, belonging to fifteen families. Sixteen parasitoid species, in four families are recorded herein for the first time in the Egyptian rice fields. The most abundant species were Dipriidae (3 species) and<em> Gronotoma</em> sp. (Figitidae). While, <em>Opius</em> <em>hediqusti</em> Fish., <em>Aphenogomus</em> sp., <em>Camptoptera</em> sp. <em>Callitula</em> sp. <em>Trissolcus</em> sp., <em>Telenomus</em> sp., and <em>Oligosita</em> sp. The rest of 23 species were less numbers during the two seasons.https://jppp.journals.ekb.eg/article_51204_302841c93c81d35d3da27030f6a042b5.pdfMansoura University, Faculty of AgricultureJournal of Plant Protection and Pathology2090-36777820160801Mixture of Natural Antioxidants can Improve Spodoptera littoralis (Boisd.) Nucleopolyhedrovirus, (Baculoviridae) Stabilty Under Egyptian Field Conditions5335395120910.21608/jppp.2016.51209ENA. El-HelalyDept. of Econ. Entomol. and Pesticides, Fac. Agric., Cairo Univ., Giza, EgyptJournal Article20191001Four promising natural plants previously proved to prolong the activity of <em>Spodoptera littoralis</em> (Boisd.) nuclepolyhedrovirus (<em>Spli</em>NPV) suspension under Egyptian field conditions, examined alone or in combination with virus in six mixtures. Screening results were based on bioassay. Different parameters were investigated to prove the value of protection, % of mortality, reduction %, LIT<sub>50</sub>, Potency and Original Activity Remaining (OAR).DPPH assay was investigated for all treatments. The obtained results showed that, virus mixed with cacao + green coffee treatment gave the highest LIT<sub>50</sub> (203.474 hours) while scored only (20.172 hours) with virus alone treatment. Original activity remaining indicated that <em>Spli</em>NPV mixed with both cacao + green coffee treatment preserved 100% of its activity for five days while it gave only 1.04 % for <em>Spli</em>NPV alone treatment and gave 41.06, 31.17, 17.65 and 42.56 with cacao, green coffee, moringa and both cacao + moringa additives; respectively five days post investigation. This investigation suggests that mixing natural derived antioxidants provides good protection to baculovirus at Egyptian sunny conditions.https://jppp.journals.ekb.eg/article_51209_009231cf639f27ebe5d51808baa395ff.pdfMansoura University, Faculty of AgricultureJournal of Plant Protection and Pathology2090-36777820160801Study Some Factors Which Affecting of Increase Secretion of Honey Bee Worker Venom Gland5415475121910.21608/jppp.2016.51219ENM. N.El-BassionyDept. plant production, Fac. of Environ. Agric. Sci., El-Arish,Univ., Egypt.,H. M.MahfouzDept. plant production, Fac. of Environ. Agric. Sci., El-Arish,Univ., Egypt.,H. T.Abou El-EnainBeekeeping Res.Dept.- Plant Protec. Res. Inst.– Agric. Res. Center.Esraa A.BadawyBeekeeping Res.Dept.- Plant Protec. Res. Inst.– Agric. Res. Center.Journal Article20191001Experiments were conducted in the apiary ofHoney Bee ResearchCenter.A field experiment was carried out in 2014-2015at theExperimental Research Station of The Agriculture ResearchCenter, El-Arish, North Sinai,in order to study some factors affecting increase secretion ofhoney bee worker venom gland such as: The time factor for the extraction of dry bee venom by electrical impulses technique in practical experiments or on a commercial scale is important, where the extractive bee venom is higher after the sun set period in comparison to other day periods due to alsarah bees return to their colonies ,The position of venom collector device (VCD) also affects venom quantity, to put the bee venom collector between three hive positions (under frames, over frames &at the entrance). The best position for the bee venom collection was over the hive frames because guard bees sting the glass, and the allover board surrounding that exposed to the sting. This means increasing the exposed surface area of stings by bees also their effects on some biological activities of honeybee colonieswere studied.https://jppp.journals.ekb.eg/article_51219_e2f16af715d7113194f37ac6dd910e95.pdf