Mansoura University, Faculty of AgricultureJournal of Plant Protection and Pathology2090-3677131020221001Appearance of Fall Armyworm, Spodoptera frugiperda as A New Invasive Insect Pest on Maize Plants in the Nile Delta, Egypt23123426752910.21608/jppp.2022.159202.1092ENHadeer S. A.RashedPlant Protection Department, Faculty of Agriculture, Moshtohor, Benha University, Al-Qalyubia, 13736, Egypt0000-0002-4882-3941Maha S.KhalilPlant Protection Department, Faculty of Agriculture, Moshtohor, Benha University, Al-Qalyubia, 13736, EgyptK. M.KhalwyPlant Protection Department, Faculty of Agriculture, Moshtohor, Benha University, Al-Qalyubia, 13736, EgyptI. A.El-GhbawyPlant Protection Department, Faculty of Agriculture, Moshtohor, Benha University, Al-Qalyubia, 13736, EgyptJournal Article20220911<em>Spodoptera frugiperda</em> (Lepidoptera: Noctudiae) is an insect pest that attacks many crops around the world and causing large reductions in the crop yield, including Graminaceous crops, especially maize. This pest introduced Egypt from Sudan, was recorded for the first time in Egypt in 2019 at Aswan Governorate on corn plants, and recently recorded in Assiut Governorate in 2021. In this study, the presence of <em>S. frugiperda</em> was detected in the Nile Delta of the northern part of Egypt, since it was transferred from the Upper Egypt governorates. Identification was made by observing the symptoms of infection on the investigated corn plants and the morphological characteristics of insect stages, such as holes on leaves and stems with larval feces, and presence of a white Y-shape on the head and 4 crescent-shaped black spots on all abdominal segments, except for the eighth segment, where they are square shaped. Further, the pupa has a pair of straight thorns at the end, while the adult insect has a row of small scales near the apical margin of the wing and the color of the wing changes from grayish brown to rusty brown. This study proves the presence <em>S. frugiperda</em> in northern part of Egypt, and because this pest has been detected, identified and its dispersal and crop destruction has been confirmed in many governorates of Egypt, it is necessary to update the geographical maps of its local distribution, to apply the recommended control approaches as a way to minimize its impacts on the agricultural crops. Further studies on its biology, host range, and food preference have to be taken in account.https://jppp.journals.ekb.eg/article_267529_8719e115d4aa09c0f1c4adcf2133f273.pdfMansoura University, Faculty of AgricultureJournal of Plant Protection and Pathology2090-3677131020221001Morphology and Distribution of Thermo- Hygro-Ir- and Chemo-Receptors for Females of Family Diaspididae (Hemiptera: Sternorrhyncha)23534026718610.21608/jppp.2022.163457.1097ENNagwan M.HamdyPlant Protection Department, Faculty of Agriculture, Ain Shams Univ. Cairo, Egypt0000-0002-6847-7126Journal Article20220913The comparative study of the female body structures of many species of Diaspididae has been done using Leica microsystems. Several types of sensilla were described for three species namely: <em>Parlatoria zizyphii</em>, <em>Lepidosaphes ficus</em> and <em>Lepidosaphes beckii</em>. Four thermo-hygro-sensory species as sensing organs for temperature and humidity, namely plachodea in <em>lepidosaphes beckii</em>, sensilla basiconica and styloconica in <em>Parlatoria zizyphii</em>, sensilla caeloconica in <em>lepidosaphes ficus </em>and tuft organ in <em>lepidosaphes ficus</em>; One type of gustatory receptor is a styloconica in <em>Parlatoria zizyphii</em>; infrared receptors (IR), also in <em>Parlatoria zizyphii</em>; olfactory organs such as sensilla placodea in <em>Parlatoria zizyphii.</em> Measurements of sense organs in different species were done using ocular micrometer. Also, dimension measurements of each sensillum of temporary and permanent females mounts were done. According to these comparative studies, the general regulation of sensilla was assumed to be Diaspididae. Eight sensory phenotypes were identified, with an attempt to use these data at the systemic level. The results of this study provide an important basis for linking morphological characteristics of sensory organs to insect behavior and should stimulate the development of effective quasi-chemistry-based control strategies against species belonging to the diaspididae.https://jppp.journals.ekb.eg/article_267186_6da3e8e85976192e4145bdb84ef8d34a.pdfMansoura University, Faculty of AgricultureJournal of Plant Protection and Pathology2090-3677131020221001Morphology and Distribution of Mechanoreceptors of Diaspididae Females (Hemiptera: Sternorrhyncha)24124526718710.21608/jppp.2022.166931.1103ENNagwan M.HamdyPlant Protection Department, Faculty of Agriculture, Ain Shams Univ. Cairo, Egypt0000-0002-6847-7126Journal Article20220915The structure of the female bodies of several Diaspididae species was examined using leica-microsystems. Several types of michanical sensilla for nine species were described . they were <em>Parlatoria zizyphii</em> ,<em>Parlatori aoleae, Abgrallaspis mendax</em> ,<em>Dynaspidiotus britannicus</em>, <em>Hemiperlesia cyanophlli</em>, <em>Lepidosaphes ficus</em>, <em>Lepidosaphes beckii, Aulacaspis tubercularis </em>and <em>Diaspidiotus pronorum<strong> .</strong></em>The structures of antennae of the different species and antennommers of the antennae were described in <em>P. zizyphii, A. mendax, D. britannicus,H. cyanophlli, L. ficus</em>and <em>A. tubercularis</em>. By tracing the tactial hairs on the studied insect species in<em> P.oleae, L. beckii</em>,<em> A. mendax, D.pronorum</em> and <em>D.britannicus</em>it was found that they exist in several places and differ from one species to another, and they may be found single or double. Also, another mechanoreceptors one campaniforrn sensillum in <em>P. zizyphii</em>, <em>L. beckii</em> and<em> L. ficus </em>some trichodea sensilla as mechanoreceptive setae were found in the prosoma and postsoma in<em> L. beckii, L. ficus </em>and <em>D. pronorum</em>. According to these comparative studies it is hypothesized that the general organization of the sensilla is common to Diaspididae. Four sensillary patterns were recognized, with an attempt to use these data at the systematic level.https://jppp.journals.ekb.eg/article_267187_1d0e96bb5800ff0776f9d59cce035a10.pdfMansoura University, Faculty of AgricultureJournal of Plant Protection and Pathology2090-3677131020221001Identification of some Wheat Monogenic Lines Resistant to Stem Rust Disease Using Molecular Markers24725426717810.21608/jppp.2022.163175.1095ENM. M.El-ShamyPlant Pathology Research Institute, Wheat Diseases Research Dept., A.R.C. Egypt, 12619.0000-0003-4566-7290Mona E.MohamedPlant Pathology Research Institute, Wheat Diseases Research Dept., A.R.C. Egypt, 12619.Journal Article20220913Ten stem rust monogenic lines and 14 commercial wheat cultivars were estimated under natural infection of stem rust disease for adult plant resistance (APR) during the 2019 – 2021 growing seasons at Gemmeiza Agricultural Research Station, ARC. Obtained results showed that <em>Sr</em>46, <em>Sr</em>47, and <em>Sr</em>51 were completely resistant along the three seasons, however, <em>Sr</em>50 showed zero to trace % resistance. The rest of the <em>Srs</em> tended to have a susceptibility ranging between 20% and 80%. The genes <em>Sr</em>54 and <em>Sr</em>45 had the highest mean values of area under disease progress curve (AUDPC) and rate of disease increases (r-value) followed by <em>Sr</em>49, <em>Sr</em>52, <em>Sr</em>48, and <em>Sr</em>53, respectively. Local wheat cultivars Gemmeiza-9, Gemmeiza-10, Gemmeiza-11, Gemmeiza-12, Giza-171, Sakha-94, Sakha-95, Sids-14, and Shandweel-1 showed different resistance values ranging from (immune) zero to 10 moderately resistance (MR). While, Giza-168, Sids-12, Misr-3, Misr-2, and Misr-1 cultivars respectively displayed susceptibility ranging between moderately susceptible Tr-MS to susceptible 60S. Six simple sequence repeat (SSR) markers linked to stem rust resistance genes i.e. <em>Sr</em>45, <em>Sr</em>46, <em>Sr</em>47, <em>Sr</em>49, <em>Sr</em>50, and <em>Sr</em>52, respectively were selected to test their presence/absence in fourteen Egyptian wheat cultivars. The SSR results indicated the presence of <em>Sr</em>45, <em>Sr</em>46, and <em>Sr</em>49 in the tested Egyptian cultivars. <em>Sr</em>47 was positive in all cultivars except in Misr-2, while <em>Sr</em>50 was present only in Gemmeiza-12, Gemmeiza-9, Gemmeiza-11, Gemmeiza-10, Shandweel-1, and Sakha-94 cultivars. However, <em>Sr</em>52 is present in all tested cultivars except Gemmeiza-11. <em>Sr</em>49, <em>Sr</em>50, and <em>Sr</em>52 displayed high levels of polymorphism (75, 100, and 100%, respectively) as analyzed the iMEC software.https://jppp.journals.ekb.eg/article_267178_787525b42110c6f7cc54336739fadda5.pdfMansoura University, Faculty of AgricultureJournal of Plant Protection and Pathology2090-3677131020221001Effect of Potassium Fertilization on The Main Piercing-Sucking Insect Species Infesting Maize Plants25525926799910.21608/jppp.2022.166923.1102ENT. E.Ata,Economic Entomology Department, Faculty of Agriculture, Damietta UniversityS. S.AwadallaEconomic Entomology Department, Faculty of Agriculture, Mansoura University29801031603384H. A.El-KadyEconomic Entomology Department, Faculty of Agriculture, Damietta UniversityM. A. M.HegabEconomic Entomology Department, Faculty of Agriculture, Damietta UniversityJournal Article20220917This study was carried out to survey the main piercing–sucking insect species that infesting maize plants in Zagazig district, Sharkia Governorate, Egypt during 2020 and 2021 seasons, in addition to estimate the effects of potassium fertilization on populations of aphid, leafhopper and planthopper insects. Plant samples, sweeping net, yellow sticky broad traps were used to collect these piercing–sucking insects from different potassium fertilized maize plants. Results showed that aphid species that infesting maize plants were<em> Rhopalosiphum maidis</em>, <em>R. padi</em>, <em>Aphis gossypii</em>, the leafhoppers were <em>Empoasca decipiens</em>, <em>E.</em> <em>decedens</em>, <em>Cicadellina chinai</em><em>,</em><em>C. bipunctella zea</em>and<em> Balclutha hortensis</em>, and the planthoppers were <em>Sogatella vibix</em> and <em>S. furcifera</em>. Potassium fertilization of maize plants influenced the population density of the aforementioned homopterous insect species. The highest mean number of the aforementioned homopterous insect species occurred with F1 (zero potassium fertilization) treatment, while the lowest population density was recorded with F4 (150 kg. Potassium sulphate/feddan). Chemical analysis showed a reverse relationship between protein and carbohydrate contents and aphid, leafhopper and planthopper populations on all tested potassium fertilized maize plants, while a positive relationship between pH values and the aforementioned insect populations was obtained.https://jppp.journals.ekb.eg/article_267999_659bd0ba71aae615c698d5aec545b7d3.pdf