Journal of Phytopathology and Pest Management 2019-07-22T16:18:21+00:00 Mohamed A. Seleim Open Journal Systems <p>An international double blind peer-review&nbsp;<strong>open access</strong>&nbsp;journal&nbsp;<strong>(pISSN:2356-8577,&nbsp;eISSN: 2356-6507)</strong>&nbsp;focus on:</p> <p>Plant diseases caused by: bacteria, fungi, oomycetes, phytoplasmas, nematodes, parasitic higher plants, protozoa, viruses, viroids and environmental toxins<br>Weed disease control<br>Postharvest disease control<br>Animal pests control<br>Forest pests and diseases<br>Biological control<br>Integrated Pest Management<br>Relationships among pest or pathogen, host and environment<br>Evaluated of Pesticides<br>New control strategies<br>Entomology and pest control<br>Genetic studies related&nbsp;to pest or disease control</p> Seasonal incidence and efficacy of nano-thiamethoxam on tomato leaf miner, Liriomyza trifolii (Burgess) (Diptera: Agromyzidae) 2019-05-08T02:16:44+00:00 Mohammed A. A. Saad Ahmed M. M. Ahmed Gamal A. M. Abdu-Allah Hossam A. Ezz El-Din Hend A. Mahmoud Ali A. Othman <p>Seasonal incidence of tomato leaf miner, <em>Liriomyza trifolii</em> (Burgess) (Diptera: Agromyzidae), and evaluation of the new nano-formulation of thiamethoxam insecticide under climatic factors that supplying the vital knowledge for successful integrated pest management (IPM) programs. This study was conducted in two successive seasons 2017-18/ 2018-19 on variety (no. 765) of tomato that cultivated at the plant protection experimental Farm, Faculty of Agriculture, Assiut University, Assiut, Egypt. The numbers of mines on the tomato leaf were recorded from the first of November to the first of the February in the two seasons. The highest peak of mines was 28.34 mines/ plant in the 13<sup>th</sup> of December, 2018, while, it was 41.8/ plant in the January1<sup>st</sup>, 2019. Further, the climatic factor analysis during the two studied seasons demonstrated that the relative humidity was the most efficient factor (52.49 % out of 91.46 %), while the temperature was the least effective one (8.67% out of 91.46%). The nano thiamethoxam at the recommended dose (1x) of neonicotinoid insecticide significantly reduced the mines compared to traditional thiamethoxam. Furthermore, the half recommended dose of nano thiamethoxam in the two tested seasons was equal in the efficacy to the traditional thiamethoxam (1x). The reduction percentages were 86.87, 75.81 and 68.67 for nano-thiamethoxam (1x), thiamethoxam (1x), and nano- thiamethoxam (½ x), respectively, in 2017-18 for the first spray. In the same corresponding treatments, the values recorded were 78.94, 65.61and 62.75% in the second spray. Results of the second season (2018-19) were in the same line, where, the reduction percentages were 84.23, 76.43 and 62.43% at first spray, while the second spray were 72.95, 65.40 and 59.31% for nano-thiamethoxam (1x), thiamethoxam (1x) and nano- thiamethoxam (½ x), respectively. These results suggested that, the relative humidity was the main climatic factor effect on the mines population of <em>Lirimyza trifolii</em>. The nano-thiamethoxam was significantly reduced the pest population. Results of this study highly recommend using nano formulation in applying of IPM leaf miner programs.</p> 2019-04-01T00:00:00+00:00 ##submission.copyrightStatement## Bacterial blight disease caused by Pseudomonas cichorii on chrysanthemum in Egypt 2019-06-12T11:32:21+00:00 Ahmed A. Elsisi <p><strong>Chrysanthemum (<em>Dendranthema grandiflorum</em>) is one of the important cut flowers and pot plants which belong to family Asteraceae. The aim of this study is to isolate and identify causal pathogens of Chrysanthemum bacterial blight disease, samples showing typical symptoms of bacterial blight disease on leaves, buds, stems or flowers obtained from different geographical areas of Egypt were used. The most conspicuous symptoms in infected leaves appear as water-soaked spots then become brown and dry. Ten bacterial isolates were isolated from different parts of Chrysanthemum which collected from different localities. In this respect, the bacterial isolates designated as Wl-1 and Wb-2 which were isolated from leaves and buds respectively of chrysanthemum white variety in Qualubia (Moshtohor). Meanwhile, the isolates coded as Ps-3 and Pf-4 were isolated from stems and flowers of chrysanthemum purple variety respectively in the same governorate (El-kanater El-khairia), the bacterial isolates coded as Ws-5 and Wf-6 were isolated from stems and flowers of chrysanthemum white variety planted in Menoufia governorate (Shebeen El-kom). While, the isolates coded as Yl-7 and Yb-8 were isolated from leaves and buds of chrysanthemum yellow variety respectively in Giza governorate (Kirdasah). The isolate Rs- 9 and Rf-10 were isolated from stems and flowers of chrysanthemum red variety from the same governorate (Elmariotia). Identification of isolated bacteria using the traditional techniques according to their inspected morphological, cultural characteristics, biochemical and physiological characteristics, these traditional tests revealed that these isolates may be belong to three genera i.e., Wl-1, Pf-4 and Rs-9 could be identified as <em>Pseudomonas cichorii</em>, while, the isolate Yb-8 could be identified as <em>Pseudomonas fluorescens</em> while the isolate Wf-6 was identified as <em>Bacillus subtilis</em>. The present study examined the level of genetic diversity and its molecular variation of the bacterial blight disease caused by <em>Pseudomonas cichorii</em>, three isolates from five geographic regions in Egypt. In addition, the isolates were pathogenic to eight plants from different plant families by artificial inoculations. This bacterium has a wide host range and this work is important for cataloging plant pathogenic bacteria that occur throughout special conditions may become epidemic in Egypt.</strong></p> 2019-05-14T00:00:00+00:00 ##submission.copyrightStatement## Diversity of pollen species in commercial honey samples collected from different governorates of Egypt 2019-07-22T16:18:21+00:00 Salah H. Rateb Heba R. Abd-El Karim Mohamed O. M. Omar Mostafa H. Hussein <p><strong>Analysis of pollen species in bee honey reflects the nectar sources of specific honey. It is a very important method to evaluate honey quality situation and frequency of adulteration. To determine dominant sources of Egyptian honeys, 16 commercial honey samples were collected from supermarkets during season of 2017.&nbsp; Using mellissopalynology technique, a total of 27 pollen species belonging to 18 families were identified in tested honey samples. The predominant pollen sources were clover, alfalfa, date palm, faba bean, coriander, eucalyptus, sunflower and citrus, while the other pollen species were present in honey samples as secondary pollen sources. Most of pollen types identified in honey samples were from necteriferous plants. The date palm was the only main polleneferous plant in the pollen spectrum of studied honeys. Pollen diversity was higher in summer honey samples in comparison with spring honey samples. The present results showed that all sixteen trademark tested honey samples had a natural source and unadulterated.</strong></p> 2019-05-15T00:00:00+00:00 ##submission.copyrightStatement##