Journal of Phytopathology and Pest Management 2019-03-21T20:08:43+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> Role of hydrogen peroxide in management of root rot and wilt disease of thyme plant 2019-03-21T20:06:55+00:00 A. A.M. Ali <p>Thyme (<em>Thymus vulgaris</em>) is an aromatic medicinal plant cultivated in many countries, including Egypt. The plant has many medicinal benefits that make it an important medical crop. In 2017, root rot and wilt symptoms were detected on thyme plants at different locations of Giza governorate and samples were collected from the infected plants. Seven fungi were isolated from the infected plants (<em>Pythium </em>sp., <em>Fusarium solani</em>, <em>Rhizoctonia solani</em>,<em> Macrophomina phaseolina</em>, <em>F. oxysporum</em>, <em>Botryodiplodia </em>sp., <em>Alternaria tennis</em>). Pathogenicity tests of the isolated fungi proved that all of them were pathogenic to thyme. The effect of hydrogen peroxide at different concentrations (0.25%, 0.50%, 1 % and 2%) on linear growth of <em>Botryodiplodia</em> sp., <em>F. oxysporum</em>, <em>F. solani</em>, <em>M. phaseolina</em>, <em>Pythium</em> sp. and <em>R. solani</em> was evaluated<em> in vitro</em>. All concentrations significantly reduced the fungal linear growth of all the tested fungi. However, the concentration of 2% was completely inhibited the fungal growth of <em>R. solani</em>, <em>Pythium </em>sp. and<em> F. solani</em>. Evaluation of hydrogen peroxide application as seed treatment and soil drenching for controlling root rot and wilt disease of thyme was also performed under greenhouse conditions. A remarkable reduction in pre- and post- emergence damping off as a response to hydrogen peroxide was detected with all the tested fungi. Furthermore, the treatment of hydrogen peroxide yielded serious increasing in plant survival with all tested fungi compared with untreated plants.</p> 2018-12-28T09:05:21+00:00 ##submission.copyrightStatement## Relationship between the population density of the white mango scale insect, Aulacaspis tubercularis (Newstead) (Hemiptera: Diaspididae) and the yield loss of mango trees in Luxor Governorate, Egypt 2019-03-21T20:07:27+00:00 Moustafa M.S. Bakry Eman F.M. Tolba <p>The main objective of this work is to estimate the relationship between the pest population, <em>Aulacaspis tubercularis </em>(Newstead), infestation through pest activity peaks in September, November, April and June on the yield loss of Goleck mango trees at the district of Esna, Luxor Governorate through two seasons (2016/2017 and 2017/2018). The results revealed that the&nbsp; increment of population density and incidence infestation by the pest gradually decreased the yield of mango, consequently&nbsp; increased the percentage of the yield loss when the data of the yield were colligated with the pest population peaks and its infestation incidence in September, November, April and June months through 2016/2017 and 2017/2018 seasons.Increasing one individual&nbsp; of pest per leaf caused a reduction of the mango yield by 2.14, 1.56, 2.05 and 4.28 kg/tree and 2.08, 1.42, 2.46 and 1.31 kg/tree through the peaks of the two seasons, respectively. Subsequently, increased the yield loss percentages by 1.52, 1.12, 1.47 and 3.06% and 1.44, 0.98, 1.70 and 0.90% when the yield data were correlated with the population density of the pest in September, November, April and June peaks during the two connective seasons (2016/2017 and 2017/2018), respectively. These results confirmed that the pest population and the percentages of infestation incidence of <em>A. tubercularis</em> during the peak of April caused the least expected values in the yield of mango and the greatest loss in mango yield. On contrary, the peak during November was less effective, causing the highest expected values in mango yield and the lowest reduction in the yield of mango during the seasons of 2016/2017 and 2017/2018. Generally, the reduction in the yield of mango was a summation of different factors (time, level and variety ability to infestation).</p> 2018-12-28T15:51:26+00:00 ##submission.copyrightStatement## Some ecological aspects of main pests and predators incidence on sweet basil in Assiut governorate, Egypt 2019-03-21T20:08:01+00:00 A. K. Abou El-Saad <p>Incidence of arthropod pests and predators on sweet basil, Osimum basilicum L. have been studied during 2017 and 2018 growing seasons in a semi-arid newly reclaimed land (Arab El-Awamer, Abnob, Assiut governorate, Egypt). Results recorded thirty eight arthropod species belong to 27 families and 10 orders incidence on sweet basil. Destructive pest species comprised 20 species belongto 14 families and 7 orders, predaceous species composed 13 species of 10 families and 6 order and five visitor species belong to 5 families and 3 orders. In addition. results showed that Empoasca decipiens (Paoli), Bemisia tabaci (Genn.), Aphis gossypii (Glover), Tetranychus urtica (Koch) and Thrips tabaci (Lind.) were the main pests recorded on sweet basil, and the dominant predaceous species were Coccinella undecimpunctata (L.), Chrysopa carnea (Steph.), Scymnus interruptus (Goeze), Stethorus punctillum (Weise), Orius albidipennis (Rossi) and Scolothrips longicornis (Priesnes) on sweet basil. Results indicated that a heavey infestation with E. decipiens, B. tabaci, T. urticae and T. tabaci to the sweet basil occurred in July, while A. gossypii was found in August during the two seasons. A heavey incidence of predaceous species, S. longicornis, S. punctillum, O. albidipennis and S. interruptus were recorded in July, where C. undecimpunctata and C. carnea were observed in August on sweet basil during the two seasons. Results also cleared that the correlation between the previous pests and predators was highly significant positive or a significant positive. It could be concluded that there are great numbers of predators that they can play an important role in biological control of the main pests attacking sweet basil to avoid hazardous to environment with chemical pesticides.</p> 2018-12-29T00:00:00+00:00 ##submission.copyrightStatement## Influence of some natural products of Moringa oleifera (L.) on some biochemical and economical characters of infected mulberry silkworm, Bombyx mori L. (Lepidoptera: Bombycidae) 2019-03-21T20:08:27+00:00 Eman M. Hassan Ghada M. A. Morsy Mohamed E. Hashish <p>Bacterial diseases of silkworm, Bombyx mori cause serious problem during silkworm rearing. They cause quantitative and qualitative reduction of silk production. Use of botanical materials having anti-microbial property with no side effects is an alternative way for controlling silkworm diseases. This study aims to shed light on the role of some natural products of Moringa oleifera (seed oil, leaves extract, root powder and honey) with different concentrations in treatment of disease silkworm with bacterial infection, by studying their effects on some protein enzymes Alanine transaminase (ALT), Aspartate transaminase (AST) and protease enzymes, cocoon parameters and silk filament characters of Bombyx mori. At the beginning of the 5th larval instar, larvae were fed on fresh mulberry leaves supplemented with different concentrations of extracts (three diets/day, five times during the 5th larval instar). A significant increase of biochemical aspects (protein transaminases and protease enzyme) in all treatments was observed in comparison with control. Root extracts with concentrations (1% &amp; 2%) and 1.5% of seed oil were the best. Similarly, the cocoon characters (cocoon and shell weights) and silk characters (filament length, weight and size) enhanced significantly in high concentrations. Root and seed oil extracts exhibited the highest significant effect, while no significant differences were noticed among shell weight means. Extracts of the different parts of M. oleifera have a protective and therapeutic execution against bacterial infection of B. mori. Furthermore, a highly significant difference was noticed with root extract using followed by the seed oil treatment with higher concentrations among other treatments.</p> 2018-12-29T00:00:00+00:00 ##submission.copyrightStatement## Potential resistance of certain sunflower cultivars and inbred lines against charcoal rot disease caused by Macrophomina phaseolina (Tassi) Goid 2019-03-21T20:08:43+00:00 Marwa M. Taha Amer F. Mahmoud Mohamed A. Hassan Adel M. Mahmoud Mohamed A. Sallam <p>In this study, fourteen sunflower cultivars and inbred lines (Giza 102, Sakha 53, Enosa, Bozoloke, L7, L16, L22, L26, L35, L36, L46, L49, L60 and L63) were evaluated for their resistance to charcoal rot disease. Obtained results indicated that, Giza 102 and Sakha 53 cultivars gave the lowest percentage of charcoal rot disease severity. While, inbred line L46 showed the highest percentage of charcoal rot disease severity. The highest amount of total phenol contents was found in infected plants of the most resistant sunflower cultivars Giza 102 and Sakha 53. While, the most susceptible line L46 showed the lowest amount of total phenol contents. Furthermore, the highest level of all determined enzymes activity Catalase, Peroxidase and polyphenoloxidase, were found in infected plants of the most resistant sunflower cultivars Giza 102 and Sakha 53. However, the lowest activity of enzymes was found in infected of the highest susceptible sunflower inbred line L46. The results of this study indicated that cultivated resistant cultivars are effective and economical method for controlling charcoal rot disease of sunflower.</p> 2018-12-29T00:00:00+00:00 ##submission.copyrightStatement##