Arab Journal for Plant Protection最新文献

{"title":"Effect of Humic Acid and Henna Extract Lawsonia inermis on Dubas Bug Ommatissus binotatus on Date Palm Trees in the South of Iraq","authors":"Ghazwan Faisal Al-Saedi","doi":"10.22268/ajpp-41.1.058064","DOIUrl":"https://doi.org/10.22268/ajpp-41.1.058064","url":null,"abstract":"Al-Saedi, G.F. 2023. Effect of Humic Acid and Henna Extract Lawsonia inermis on Dubas Bug Ommatissus binotatus on Date Palm Trees in the South of Iraq. Arab Journal of Plant Protection, 41(1): 58-64. https://doi.org/10.22268/AJPP-41.1.058064 Date palm is infected by many harmful insect pests, which lead to significant economic losses, among these pests is the dubas bug, Ommatissus binotatus (De Berg). This study was conducted to determine the effect of adding humic acid to NPK fertilizer and the use of henna extract Lawsonia inermis to reduce the effect of dubas bug on date palm trees. The spring insect infestation began at the beginning of March and reached its peak during April of 30.50% insect/leaf of untreated trees, 25% for trees treated with humic acid and henna extract, and 27.30% for trees treated with henna extract only. As for its autumn activity, it started at the beginning of October, and the peak infestation reached 25.60% for untreated trees, 18.70% for trees treated with humic acid and henna extract, and 20.60% for trees treated with henna extract only. The results also showed that trees treated with humic acid and henna extract were less infested with dubas bug, reaching 5.52%, with a significant difference from untreated trees, which amounted to 7.88%. The results also showed that treating infested leaves with dubas bug with humic acid increased the leaf content of total chlorophyll, wax and phenolic compounds compared with untreated leaves infested with dubas bug. Keywords: Dubas bug, humic acid, Lawsonia inermis, date palm, phenolic substances","PeriodicalId":8105,"journal":{"name":"Arab Journal for Plant Protection","volume":"27 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75805525","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Lethal and Sublethal Effects of Mixed Pesticides on Tetranychus urticae Koch and its Predator Phytoseiulus persimilis","authors":"Dina A. M. Abdou, Mohammed M. Elbokl, Ahmed E.M. Abd Elmageed, Mariam G. Habashy","doi":"10.22268/ajpp-41.1.040047","DOIUrl":"https://doi.org/10.22268/ajpp-41.1.040047","url":null,"abstract":"Abdou, D.A.M., M.M. Elbokl, A.E.M. Abd Elmageed and M.G. Habashy. 2023. Lethal and Sublethal Effects of Mixed Pesticides on Tetranychus urticae Koch and its Predator Phytoseiulus persimilis. Arab Journal of Plant Protection, 41(1): 40-47. https://doi.org/10.22268/AJPP-41.1.040047 Tetranychus urticae Koch is considered one of the most economically important pests on a wide range of crops in orchards worldwide. T. urticae control has been largely based on the utilization of acaricides. Sublethal effects of Romectin gold 32.8% SC (Abamectin 2.8% + Imidaclopride 30%) and AgriFlix 18.56% SC (Thiamethoxam 15.24% + Abamectin 3.23%) were studied on toxicity index and life-table parameters of T. urticae. LC25 concentration of Romectin gold and AgriFlix that were 0.0019 and 0.013 ppm, respectively, were utilized for sublethal studies. All acaricides showed a significant effect on T. urticae. Results obtained indicated that Romectin gold was the compound that had the higher effect on adult females of T. urticae and its predatory mite P. persimilis than AgriFlix. Sublethal concentrations of Romectin gold and AgriFlix may influence the durability of pre-adult stages, longevity, and biological parameters of T. urticae. The duration of life cycle of both females and males decreased significantly compared to the control with no significant effect between the two tested compounds. At the same time, Romectin gold produced the highest life cycle and life span. AgriFlix significantly decreased the pre-oviposition period with the lowest time of 1.10 days compared with 2.00 days for the control. To the contrary, Romectin gold had no significant effect on the preoviposition period. On the other hand, treatments with both Romectin gold and AgriFlix decreased significantly the oviposition period compared with the control. Romectin gold and AgriFlix significantly reduced the total number of eggs produced per female. AgriFlix acaricide decreased the total number and the daily rate of eggs produced by 73.36 and 65.05%, respectively. Results showed that exposure of females to sublethal concentrations of Romectin gold and AgriFlix reduced the net reproductive rate (R0), while intrinsic rate (rm) was increased compared to the control. Similarly, the finite rate of increase (exprm) for the control was significantly higher than that for Romectin gold and AgriFlix. Additionally, it was found that mean generation time (T) of the control was significantly shorter than that of Romectin gold and AgriFlix. Meanwhile, sex ratio was the same for control, Romectin gold and AgriFlix. Keywords: Sublethal effects, toxicity index, Life-table parameters, Abamectin, Imidaclopride and Thiamethoxam.","PeriodicalId":8105,"journal":{"name":"Arab Journal for Plant Protection","volume":"106 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76141560","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Studying the Efficiency of Essential Oil Blends with the Pesticide Abamectin against Adult and Larvae of Trogoderma granarium (Everts)","authors":"Dina Al Mansoori, Firas S. Al Bayati, Sahar M. Jawad","doi":"10.22268/ajpp-41.1.018027","DOIUrl":"https://doi.org/10.22268/ajpp-41.1.018027","url":null,"abstract":"Al Mansoori, D.H.H., F.S. Al Bayati and S.M. Jawad. 2023. Studying the Efficiency of Essential Oil Blends with the Pesticide Abamectin against Adult and Larvae of Trogoderma granarium (Everts). Arab Journal of Plant Protection, 41(1): 18-27. https://doi.org/10.22268/AJPP-41.1.018027 Using chemical pesticides has several adverse effects on the environment and human health. Therefore, natural plant extract products may provide an alternative to chemical pesticides for the control of stored pests and reduce the impact caused by chemical pesticides. The use of aromatic essential oils in the management of insect pests has recently gained popularity due to their chemical composition and the presence of many important compounds for controlling harmful insects, such as stored grain pests. A series of laboratory studies were conducted to determine the lowest dosage of the insecticide Abamectin combined as (1:1) with Eucalyptus oil against the insect's adult, third, and fifth stage larvae khapra. In addition, the repellency or attraction of Eucalyptus oil has been examined. The findings indicated that various concentrations of Abamectin were used against the khapra beetle; the death rates of the concentrations (0.6 and 0.15 ml/L) were 91.67 and 78.33% compared to the control. The concentration 0.3 and 0.15 mg/L when mixed with Eucalyptus oil (1:1) gave 98.33 and 86.67% mortality, respectively, compared to the control, which was 0.00%. The result also indicated that mortality rates were highest by the concentration of 0.6 ml/L with a death rate of 85.55 and 80.00% of the third and fifth instar larvae, while the concentration of 0.15 ml/L gave death rates of 74.44 and 67.77%, respectively. the addition of Eucalyptus oil at a ratio of 1:1 to the insecticide concentrations 0.3 ml/L led to an increase in the mortality rates of the third and fifth instar larvae that reached 88.89 and 85.55%, respectively. Likewise, the death rates of using the insecticide concentration of 0.15 ml/L were 81.11 and 82.22%, respectively. The study also indicated the effect of Eucalyptus oil alone on the percentage of death of adults, the third and fifth instars of the Khapra beetle were 83.33, 48.61 and 65.55%, respectively, whereas the death rate for the control treatment was 1.67%. The study also confirmed that Eucalyptus oil had an 83.00% repellant effect on adults, whereas it had an 84.50% attraction effect on fifth-stage larvae. The study suggests using these essential oils as a potential safe alternative to insecticides. Keywords: Khapra Beetle, Eucalyptus oil, pesticides, Essential oils","PeriodicalId":8105,"journal":{"name":"Arab Journal for Plant Protection","volume":"115 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76087641","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Efficiency of Different Local Isolates of Bacillus subtilis in Inducing Resistance Against Tomato spotted wilt virus in Pepper Plants","authors":"Hameed H. Ali, Alaa H. Mohamad, Raghed N. Mhed","doi":"10.22268/ajpp-41.1.071076","DOIUrl":"https://doi.org/10.22268/ajpp-41.1.071076","url":null,"abstract":"Ali, H.H., A.H. Mohamed and R.N. Mhed. 2023. Efficiency of Different Local Isolates of Bacillus subtilis in Inducing Resistance Against Tomato spotted wilt virus in Pepper Plants. Arab Journal of Plant Protection, 41(1): 71-76. https://doi.org/10.22268/AJPP-41.1.071076 The study aimed to try to control Tomato spotted wilt virus (TSWV, genus Orthotospovirus) and reduce pepper yield loss by the application of three local isolates of Bacillus subtillis (B-T isolated from tomato fields, B-G obtained from garden soil, and B-W isolated from wheat fields). The virus was diagnosed based on symptoms produced on pepper plants and DAS-ELISA test. Pepper seeds were treated with a suspension of B. subtillis isolates separately containing 108 CFU/ml after 24 hours. Seeds were dried on filter paper and planted in sterilized soil in 30 cm diameter plastic pots, and placed in cages covered with cheese cloth under greenhouse conditions. The results showed that treatment of pepper seeds with B. subtillis isolates led to an improvement of growth parameters inducing plant growth (plant height, number of leaves, shoot dry weight, disappearance of virus symptoms, and virus inhibition in treated seed plants as compared to the untreated plants. Keywords: Tomato spotted wilt virus, Bacillus spp., pepper, control.","PeriodicalId":8105,"journal":{"name":"Arab Journal for Plant Protection","volume":"5 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87777205","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The First Record of Ero aphana (Araneae: Mimetidae) in Egypt","authors":"Maryham Adel Rezk Sawers, Shahira Mohamad Onsy El-Bishlawy, Morad Fahmy Hassan, Gihan Mohamed El Sayed Sallam","doi":"10.22268/ajpp-41.1.015017","DOIUrl":"https://doi.org/10.22268/ajpp-41.1.015017","url":null,"abstract":"Sawers, M.A.R., S.M.O. El-Bishlawy, M.F. Hassan and G.M.S. Sallam. 2023. The First Record of Ero aphana (Araneae: Mimetidae) in Egypt. Arab Journal of Plant Protection, 41(1): 15-17. https://doi.org/10.22268/AJPP-41.1.015017 This investigation presents a new record, Ero aphana (Walckenaer, 1802) (Araneae: Mimetidae) in the Egyptian fauna. It was found in the Experimental Station of the Faculty of Agriculture, Cairo University, Giza Governorate, Egypt on grapefruit trees (Citrus paradise) on October 1, 2018. Six Specimens; one male and five Juveniles of E. aphana were collected and identified. In addition, notes on the description, environmental conditions and collection data of this species are given. Photos of general habitus and palpal organ of the male and measurements of leg segments are illustrated. Keywords: Araneae, Mimetidae, Ero aphana, new record, Egypt","PeriodicalId":8105,"journal":{"name":"Arab Journal for Plant Protection","volume":"38 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77651186","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Effect of Using Solarized and Methanized Manure on Weeds Control in Eastern Moroccan Saffron Cultivation","authors":"I. Mzabri","doi":"10.22268/ajpp-040.1.070077","DOIUrl":"https://doi.org/10.22268/ajpp-040.1.070077","url":null,"abstract":"Cultivated for its red stigmas, saffron is arguably the most expensive and precious spice in the world. However, saffron production is limited by a number of factors, including weed infestation which causes damage to this crop both quantitatively and qualitatively. Solarization and anaerobic digestion are techniques used to control weeds and plant diseases. It is for this purpose an experiment was conducted in 2018 with an objective to compare solarized manure and that resulting from anaerobic digestion on the development of weeds associated with saffron crop. During the trial, the parameters measured correspond, on the one hand, to morpho-metric measurements and the determination of saffron stigmas yield and, on the other hand, to the determination of density, dry biomass and weed control capacity. In this study, 16 weed species were recorded. The two treatments applied reduced weed density and biomass by about 55% of the weed species, including problematic species such as Cynodon dactylon, Cyperus rotundus and Convolvulus arvensis. However, there was no effect of manure treatment (T2, T3) on the populations of Chenopodium album, Aster squamatus and Medicago truncatula. The average stigmata yield from the addition of digested manure was 4% higher than the control. Similarly, the number, weight and percentage of daughter corms with a large diameter were higher for plants grown on treated manure. It was concluded that the incorporation of treated manure as a soil amendment slightly increased saffron yield and effectively controlled more than half of the weed species present. Keywords: Solarization, saffron, weeds, management strategies, manure, anaerobic digestion","PeriodicalId":8105,"journal":{"name":"Arab Journal for Plant Protection","volume":"23 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73799823","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Occurrence of the Hyperparasite Ampelomyces quisqualis on Golovinomyces neosalviae (Erysiphaceae), Causal Agent of Powdery Mildew on Common Sage (Salvia officinalis)","authors":"Shady Hamzeh, W. Nafaa, F. Azmeh","doi":"10.22268/ajpp-040.2.158163","DOIUrl":"https://doi.org/10.22268/ajpp-040.2.158163","url":null,"abstract":"Hamzeh, S., W. Naffaa and M.F. Azmeh. 2022. Occurrence of the Hyperparasite Ampelomyces quisqualis on Golovinomyces neosalviae (Erysiphaceae), Causal Agent of Powdery Mildew on Common Sage (Salvia officinalis). Arab Journal of Plant Protection, 40(2): 158-163. https://doi.org/10.22268/AJPP-040.2.158163 Ampelomyces quisqualis, the oldest mycoparasite of powdery mildew (PM), has been widely studied due to its potential in biocontrol. Many strains of this hyperparasite have been experimented worldwide and some of them were successfully applied for biocontrol, but others have been less efficient. No previous identification of Ampelomyces strains has been done in Syria, but some isolates were morphologically identified in the coastal region. There was no indication of Ampelomyces occurrence in any other location in Syria. During this three years survey (2019–2021), 73 plant samples were collected from five governorates, including coastal and southern regions in Syria. Ampelomyces pycnidia were detected in five samples from the coastal area and a new unpredictable finding of Ampelomyces sp. was found in southern Syria. This new occurrence of Ampelomyces isolate (S.ham82) is documented on a new mycohost; Golovinomyces neosalviae, the causal agent of PM on common sage (Salvia officinalis). Successful isolation of S.ham82 on PDA was conducted and parasitic activity was assessed by artificial inoculation using In vitro detached leaf assay. Morphological characteristics of this isolate were determined and compared with isolate Bah1 from the coastal region. Ampelomyces sp. (S.ham82) pycnidia size were 77.44 (±17.16) x 25.28 (±6.12) µm in natural host, 125.27 (±42.34) x 115.95 (±40.14) µm, 189.51 (±60.06) x 167.64 (±52.41) µm on PDA media pre and post artificial inoculation, respectively, and 88.24 (±20.05) x 27.98 (±5.68) µm on inoculated detached leaves. Conidia were also morphologically characterized and measured 8.11 (±0.87) x 3.88 (±0.51) µm in natural host, 8.86 (±1.65) x 3.18 (±0.80) µm in PDA pre and post artificial inoculation, respectively, and 7.82 (±0.69) x 3.61 (±0.37) µm in inoculated detached leaves. To our knowledge, this is the first report of the natural occurrence of Ampelomyces sp. in G. neosalviae on Saliva officinalis. Keywords: Ampelomyces sp., Common sage, Golovinomyces neosalviae, Syria.","PeriodicalId":8105,"journal":{"name":"Arab Journal for Plant Protection","volume":"7 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73271362","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of Different Treatments on Producing in vitro Healthy Vitis vinifera L. cv. Halwani Free From Grapevine Leafroll-Associated Virus-3","authors":"Mayada El-samin, Khalil El- Maari, Fahed El Biski","doi":"10.22268/ajpp-40.4.334339","DOIUrl":"https://doi.org/10.22268/ajpp-40.4.334339","url":null,"abstract":"El-Samin, M., K. El-Maari and F. El-Biski. 2022. Effect of Different Treatments on Producing in vitro Healthy Vitis vinifera L. cv. Halwani Free From Grapevine Leafroll-Associated Virus-3. Arab Journal of Plant Protection, 40(4): 334- 339. https://doi.org/10.22268/AJPP-40.4.334339 This study was carried out during the period 2020-2021, to produce virus-free propagation material from Halwani cultivar of grape infected with Grapevine leafroll-associated virus 3 (GLRaV-3), by using the meristem tip culture technique together with thermal and chemical treatments. The meristem tip of 500 micrometers was excised from infected plants and placed on 1/2 MS medium which contains 0.5 mg/l BAP and 30 g/l sucrose. Virus presence or absence was confirmed by the ELISA test (DAS-ELISA). Results showed that the highest Percentage of virus free plantlets (87.67%) was obtained from the combined treatment, whereas the thermal treatment resulted in the lowest percentage of virus-free plants (56.25%). The results obtained also showed the significant superiority of using meristem-tip culture compared with all other treatments in terms of percent growing plants, which reached 98.13%. This study indicated that there were negative effects of all treatments on plant elongation, especially the thermal treatment, which gave the least plant growth elongation (0.33 cm). Keywords: Grapevine leafroll-associated virus, grape, meristem, thermal treatment, chemical treatment, DAS-ELISA","PeriodicalId":8105,"journal":{"name":"Arab Journal for Plant Protection","volume":"76 2 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87856420","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Effect of Palizin, Tondexir and Pymetrozine on The Green Cotton Aphid Aphis gossypii","authors":"Majid Moghadam, B. Amiri-Besheli, M. Sharifi","doi":"10.22268/ajpp-40.4.340345","DOIUrl":"https://doi.org/10.22268/ajpp-40.4.340345","url":null,"abstract":"Moghadam, M., B. Amiri-Besheli and M. Sharifi. 2022. The Effect of Palizin, Tondexir and Pymetrozine on The Green Cotton Aphid Aphis gossypii. Arab Journal of Plant Protection, 40(4): 340-345. https://doi.org/10.22268/AJPP-40.4.340345 The aim of this study was to evaluate the effect of plant-based pesticides on the green aphid A. gossypii and also investigating the effect of adding citral oil to the plant pesticides. To carry out experiments on A. gossypii in nymph and adult stages, young soybean leaves of DPX cultivar were used (Katoul). For bioassay, first, the bulk solution was prepared and then, other concentrations (eight concentrations for each insecticide) were prepared and used. The results of this study showed that the palizin insecticide with citral oil at LC50 of 359.669 ml/l had the greatest effect on nymphs in-vitro, but when the same nymph stage was evaluated under greenhouse conditions, the highest efficacy was obtained with the mixture of pymetrozine and citral oil with LC50 of 295.242 ml/L. In the experiments performed on the adult stage under both greenhouse and laboratory conditions, the most desirable treatment was that of the mixture of herbal insecticide palizin and citral oil, and the LC50 obtained was 807.88 and 1249.14 ml/L under laboratory and greenhouse conditions, respectively. Keywords: Palizin, pymetrozine, tondexir, citral oil, cotton green aphid.","PeriodicalId":8105,"journal":{"name":"Arab Journal for Plant Protection","volume":"50 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87583925","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of Chemical and Biological Control Components in Protecting Potatoes from Infection with Early Blight Disease Caused by Alternaria solani and its Impact on Growth and Yield","authors":"Elissar Shaabo","doi":"10.22268/ajpp-40.4.325333","DOIUrl":"https://doi.org/10.22268/ajpp-40.4.325333","url":null,"abstract":"Shaabo, A., N. Deeb, M. Mufleh, R. Zaydan, A. Haj Hasan, L. Adra, A. Askriyeh and N. Sakkour. 2022. Effect of Chemical and Biological Control Components in Protecting Potatoes from Infection with Early Blight Disease Caused by Alternaria solani and its Impact on Growth and Yield. Arab Journal of Plant Protection, 40(4): 325-333. https://doi.org/10.22268/AJPP-40.4.325333 This study was carried out at Alsonawbar Station of the Agricultural Scientific Research Center in Lattakia, Syria during the spring of 2021 to evaluate the effect of different treatments for the control of potato early blight disease, and their effect on plant growth and potato yield and quality. Six treatments were evaluated: two chemical pesticides: Ranman 20% SC (cyazofamid), Moximate 50% WP (cymoxanil + mancozeb), three biological pesticides Bacillus subtilis, Beauveria bassiana and Trichoderma harizianum, in addition to the control. Results showed that Ranman treatment was superior, as it led to reduction of 20.18 and 5.61 % in disease severity and infection rate, respectively, two weeks after treatment, with a decrease of 25.80 and 20.46 %, respectively, compared to the control. With the same treatment, the leaf area and leaf area index reached 8438.75 cm2 /plant and 3.45 m2 /m2 , respectively, with an increase of 4827.75 cm2 /plant, and 1.97 m2 /m2 over the control treatment. Results also showed the superiority of Bacillus subtilis treatment in terms of tubers number, tubers weight, yield, and the proportion of marketable yield which reached 8.16 tuber/plant, 93.47 g/tuber, 3126.94 kg/donum, 95.30% marketable yield, respectively, which represented a reduction rate of 20.09%, 30.99%, 42.31%, 9.72%, respectively, over the control treatment. In addition, results showed that the highest dry matter and starch content was obtained in response to the chemical pesticides treatments. Key words: Alternaria solani, potato, chemical control, biological control, production","PeriodicalId":8105,"journal":{"name":"Arab Journal for Plant Protection","volume":"7 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81038161","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}