Pub Date : 2022-12-03DOI: 10.21608/eajbsf.2022.272777
A. M., A. Abdallah
The Laboratory study was administrated to evaluate the toxic and latent effect of, fenpyroximate, Lufenuron, Spinosad
采用室内研究方法评价了芬吡肟酸酯、鲁非努伦、思必诺沙的毒性和潜在作用
{"title":"Toxicological and Biological studies of Some Pesticides from Different Groups on Red Mite, tetranychus urticae. Under Laboratory Conditions","authors":"A. M., A. Abdallah","doi":"10.21608/eajbsf.2022.272777","DOIUrl":"https://doi.org/10.21608/eajbsf.2022.272777","url":null,"abstract":"The Laboratory study was administrated to evaluate the toxic and latent effect of, fenpyroximate, Lufenuron, Spinosad","PeriodicalId":34633,"journal":{"name":"Egyptian Academic Journal of Biological Sciences F Toxicology and Pest Control","volume":"33 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81297994","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}
Pub Date : 2022-11-30DOI: 10.21608/eajbsf.2022.272162
Noha Elnajjar, Shaymaa Abdelrahman, A. Marei, Y. Marei, Sally Elsharkawey, Y. Marei
_________________
_________________
{"title":"Prophylactic Resveratrol Ameliorates Thioacetamide Hepatotoxicity in A Dose-Dependent Fashion Through the Regulation of Gene Expression Levels of MiR-155 and MiR-21","authors":"Noha Elnajjar, Shaymaa Abdelrahman, A. Marei, Y. Marei, Sally Elsharkawey, Y. Marei","doi":"10.21608/eajbsf.2022.272162","DOIUrl":"https://doi.org/10.21608/eajbsf.2022.272162","url":null,"abstract":"_________________","PeriodicalId":34633,"journal":{"name":"Egyptian Academic Journal of Biological Sciences F Toxicology and Pest Control","volume":"7 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78451415","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}
Pub Date : 2022-11-30DOI: 10.21608/eajbsf.2022.269500
E. S., A. A
and also seedling growth. Therefore, the present study was carried out to evaluate the effect of Difenoconazole and Azoxystrobin as fungicides on the germination of monocotyledonous seed (wheat; Triticum aestivum L . ), and dicotyledonous seeds (radish; Raphanus sativus ), then effect on Tomato ( Solanum lycopersicum L.) seedling growth. Seeds of wheat and radish and seedling of tomato were treated with different concentrations of the tested fungicides; recommended, half and the double recommended dose compared with the untreated control. The results showed that the two tested fungicides significantly decreased seed germination%, root and shoot length of both wheat and radish seeds at the different applied doses compared to the control. The highly significant reduction in relative root and shoot length% and the relative germination% of wheat and radish seeds were observed when exposed to Difenoconazole or Azoxystrobin in which double recommended doses being 23.20, 27.88, and 43% or 13.20, 26.02, and 30.10% in wheat seeds, however, the reduction were 22.30, 37.69, and 63.0% or 17.67, 51.67, and 40.70% in radish seeds, respectively. In the case of tomato seedlings; carotene, chlorophyll a, chlorophyll b and total chlorophyll were significantly decreased after three weeks from both fungicides application by the double recommended doses, which recorded 0.04, 2.25, 0.15, 2.40 mg/g fresh weight for difenoconazole or 0.06, 1.66, 0.39, 2.05 mg/g fresh weight for azoxystrobin, respectively. Because Difenoconazole is less hazardous than Azoxystrobin, it might be advised that wheat and radish seeds be treated with it before sowing. Three weeks after being exposed to the fungicides, tomato plants treated with Azoxystrobin displayed a decrease in the a/b ratio at the indicated dose.
{"title":"Effect of Difenoconazole and Azoxystrobin on Wheat and Radish Seeds Germination and Tomato Seedling Growth","authors":"E. S., A. A","doi":"10.21608/eajbsf.2022.269500","DOIUrl":"https://doi.org/10.21608/eajbsf.2022.269500","url":null,"abstract":"and also seedling growth. Therefore, the present study was carried out to evaluate the effect of Difenoconazole and Azoxystrobin as fungicides on the germination of monocotyledonous seed (wheat; Triticum aestivum L . ), and dicotyledonous seeds (radish; Raphanus sativus ), then effect on Tomato ( Solanum lycopersicum L.) seedling growth. Seeds of wheat and radish and seedling of tomato were treated with different concentrations of the tested fungicides; recommended, half and the double recommended dose compared with the untreated control. The results showed that the two tested fungicides significantly decreased seed germination%, root and shoot length of both wheat and radish seeds at the different applied doses compared to the control. The highly significant reduction in relative root and shoot length% and the relative germination% of wheat and radish seeds were observed when exposed to Difenoconazole or Azoxystrobin in which double recommended doses being 23.20, 27.88, and 43% or 13.20, 26.02, and 30.10% in wheat seeds, however, the reduction were 22.30, 37.69, and 63.0% or 17.67, 51.67, and 40.70% in radish seeds, respectively. In the case of tomato seedlings; carotene, chlorophyll a, chlorophyll b and total chlorophyll were significantly decreased after three weeks from both fungicides application by the double recommended doses, which recorded 0.04, 2.25, 0.15, 2.40 mg/g fresh weight for difenoconazole or 0.06, 1.66, 0.39, 2.05 mg/g fresh weight for azoxystrobin, respectively. Because Difenoconazole is less hazardous than Azoxystrobin, it might be advised that wheat and radish seeds be treated with it before sowing. Three weeks after being exposed to the fungicides, tomato plants treated with Azoxystrobin displayed a decrease in the a/b ratio at the indicated dose.","PeriodicalId":34633,"journal":{"name":"Egyptian Academic Journal of Biological Sciences F Toxicology and Pest Control","volume":"41 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81944708","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}
Pub Date : 2022-10-04DOI: 10.21608/eajbsf.2022.270433
Nashwa Amein, A. Mohammad
The biological and histological effect of insect growth regulator (flufenoxuron) evaluated on 2 nd larval instar of Agrotis ipsilon as a chitin synthesis inhibitor. The effect of sublethal dose LC 50 was used to investigate its effect on some developmental and reproductive parameters of Agrotis ipsilon that survived treatment of newly molted second instars. Results indicated that the flufenoxuron significantly enhanced the mean larval and pupal durations, whereas they significantly declined the mean percentage pupation, adult emergence, adult longevity, fecundity, and fertility compared to untreated insects. Also, our studies recorded many histological aberrations to the ovary of Agrotis ipsilon female moth.
{"title":"The Biological and Histopathological Aspects of The Black Cutworm, Agrotis ipsilon (Hufnagel) (Lepidoptera: Noctuidae) Treated with Flufenoxuron","authors":"Nashwa Amein, A. Mohammad","doi":"10.21608/eajbsf.2022.270433","DOIUrl":"https://doi.org/10.21608/eajbsf.2022.270433","url":null,"abstract":"The biological and histological effect of insect growth regulator (flufenoxuron) evaluated on 2 nd larval instar of Agrotis ipsilon as a chitin synthesis inhibitor. The effect of sublethal dose LC 50 was used to investigate its effect on some developmental and reproductive parameters of Agrotis ipsilon that survived treatment of newly molted second instars. Results indicated that the flufenoxuron significantly enhanced the mean larval and pupal durations, whereas they significantly declined the mean percentage pupation, adult emergence, adult longevity, fecundity, and fertility compared to untreated insects. Also, our studies recorded many histological aberrations to the ovary of Agrotis ipsilon female moth.","PeriodicalId":34633,"journal":{"name":"Egyptian Academic Journal of Biological Sciences F Toxicology and Pest Control","volume":"50 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81537609","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}
Pub Date : 2022-09-25DOI: 10.21608/eajbsf.2022.266862
A. Mohammad
the 50 % lethal concentration (colony forming unit, CFU) of against 4 th instars, was 8.31x10 5 CFU -1 in liquid formulation and 6.72 x10 5 CFU gm -1 for wettable powder. Bioassay also that percent and adult emergence were affected more by subjecting the to wettable powder than liquid formulation. The mortality values for the adults ranged between 49.33 & 64.23 when using liquid formulation and wettable powder, respectively.
{"title":"Biological Control of Aedes aegypti Mosquitoes Using Bacillus thuringiensis","authors":"A. Mohammad","doi":"10.21608/eajbsf.2022.266862","DOIUrl":"https://doi.org/10.21608/eajbsf.2022.266862","url":null,"abstract":"the 50 % lethal concentration (colony forming unit, CFU) of against 4 th instars, was 8.31x10 5 CFU -1 in liquid formulation and 6.72 x10 5 CFU gm -1 for wettable powder. Bioassay also that percent and adult emergence were affected more by subjecting the to wettable powder than liquid formulation. The mortality values for the adults ranged between 49.33 & 64.23 when using liquid formulation and wettable powder, respectively.","PeriodicalId":34633,"journal":{"name":"Egyptian Academic Journal of Biological Sciences F Toxicology and Pest Control","volume":"205 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86840333","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}
Pub Date : 2022-09-22DOI: 10.21608/eajbsf.2022.266750
Nagah Al-Maroug, M. Nassar, G. Abdelatef, Mohamed Elshazly, Eman Abd Elfattah, Dina H. Abd El-Monem
Desert locust, Schistocerca gregaria is a serious agricultural pest that causes considerable damage to food crops and pasture grasses . This study was carried out to evaluate the commercial botanical insecticides, Sabadilla, Limonene, Rotenone, and Azadirachtin on Sch. gregaria . Results indicated that the 4 th nymphal instars were affected after feeding on clover leaves treated with the various concentrations of the tested compounds. Early 24hrs. moulted 4th nymphal instar was more sensitive to azadirachtin followed by rotenone, sabadill and finally limonene botanical. The recorded LC 50 value was 3.4, 3.7, 3.9 and 4.2% by the effect of azadirachtin, rotenone, sabadilla and limonene respectively against 4 th nymphal instars 72hrs. post-treatment. While LC90 was 15.2, 18.7, 26.3 and 28.1% in the same previous compound respectively. The higher prolongation of nymphal duration was 17.6 days with azadirachtin at a concentration of 15% and lower prolongation was 10.5 with limonene at a concentration of 5% compared to 10.2 days of control. Also, nymphs suffered from weight loss for all tested botanical insecticides particularly at higher concentrations then died. The morphogenetic effect was obtained at different concentrations of the tested botanical insecticides. Deformation was in the form of abnormal nymphs and nymphal-adult intermediate stages.
{"title":"Assessment of the Commercial Botanical Insecticides Against the desert Locust, Schistocerca gregaria (FORSK.) (Orthoptera: Acrididae)","authors":"Nagah Al-Maroug, M. Nassar, G. Abdelatef, Mohamed Elshazly, Eman Abd Elfattah, Dina H. Abd El-Monem","doi":"10.21608/eajbsf.2022.266750","DOIUrl":"https://doi.org/10.21608/eajbsf.2022.266750","url":null,"abstract":"Desert locust, Schistocerca gregaria is a serious agricultural pest that causes considerable damage to food crops and pasture grasses . This study was carried out to evaluate the commercial botanical insecticides, Sabadilla, Limonene, Rotenone, and Azadirachtin on Sch. gregaria . Results indicated that the 4 th nymphal instars were affected after feeding on clover leaves treated with the various concentrations of the tested compounds. Early 24hrs. moulted 4th nymphal instar was more sensitive to azadirachtin followed by rotenone, sabadill and finally limonene botanical. The recorded LC 50 value was 3.4, 3.7, 3.9 and 4.2% by the effect of azadirachtin, rotenone, sabadilla and limonene respectively against 4 th nymphal instars 72hrs. post-treatment. While LC90 was 15.2, 18.7, 26.3 and 28.1% in the same previous compound respectively. The higher prolongation of nymphal duration was 17.6 days with azadirachtin at a concentration of 15% and lower prolongation was 10.5 with limonene at a concentration of 5% compared to 10.2 days of control. Also, nymphs suffered from weight loss for all tested botanical insecticides particularly at higher concentrations then died. The morphogenetic effect was obtained at different concentrations of the tested botanical insecticides. Deformation was in the form of abnormal nymphs and nymphal-adult intermediate stages.","PeriodicalId":34633,"journal":{"name":"Egyptian Academic Journal of Biological Sciences F Toxicology and Pest Control","volume":"323 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76352818","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}
Pub Date : 2022-09-16DOI: 10.21608/eajbsf.2022.266747
Yasmein A. El Sayed, R. Ahmed
{"title":"Toxicity, Growth Inhibition Effect, Oxidative Stress Induced in Spodoptera littoralis by Zinc Sulfate and Its Histological Alternation of The Reproductive Organs","authors":"Yasmein A. El Sayed, R. Ahmed","doi":"10.21608/eajbsf.2022.266747","DOIUrl":"https://doi.org/10.21608/eajbsf.2022.266747","url":null,"abstract":"","PeriodicalId":34633,"journal":{"name":"Egyptian Academic Journal of Biological Sciences F Toxicology and Pest Control","volume":"9 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81937483","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}
Pub Date : 2022-09-06DOI: 10.21608/eajbsf.2022.262283
R. Saba, Sherif Hamada, S. El-Sagheer
This investigated the efficiency of six Foeniculum and and studied the effects on four commercial insecticides: lambada-cyhalothrin, dimethoate and mineral were tested after under From the results, we decide and suggest that pipiens mosquito develops and increase tolerance and resistance to organophosphates and pyrethroids insecticides with frequent Also, we can be concluded that medicinal plant extracts have the potential to be used as green insecticides for controlling pipiens however, more are to more chemicals for plant derivatives used in C. pipiens mosquito control.
{"title":"Medicinal Plant Extracts as Green Insecticides and Eco-friendly Approach with Study to Reduce the Use of Insecticides for Controlling Culex pipiens larvae","authors":"R. Saba, Sherif Hamada, S. El-Sagheer","doi":"10.21608/eajbsf.2022.262283","DOIUrl":"https://doi.org/10.21608/eajbsf.2022.262283","url":null,"abstract":"This investigated the efficiency of six Foeniculum and and studied the effects on four commercial insecticides: lambada-cyhalothrin, dimethoate and mineral were tested after under From the results, we decide and suggest that pipiens mosquito develops and increase tolerance and resistance to organophosphates and pyrethroids insecticides with frequent Also, we can be concluded that medicinal plant extracts have the potential to be used as green insecticides for controlling pipiens however, more are to more chemicals for plant derivatives used in C. pipiens mosquito control.","PeriodicalId":34633,"journal":{"name":"Egyptian Academic Journal of Biological Sciences F Toxicology and Pest Control","volume":"12 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72371782","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}
Pub Date : 2022-09-02DOI: 10.21608/eajbsf.2022.259585
M. Kandil, E. Fouad, elsayed mokbel
Insecticide combinations are a strategy for increasing toxicity, combating resistance, and overcoming resistance. Neonicotinoid mixtures have been recommended to control a variety of sucking insects. In this study, the combination index (CI) was used to examine the synergistic interactions of certain neonicotinoids (acetamiprid, thiamethoxam, and dinotefuran) with various insecticides. The interactions of neonicotinoid mixtures were assessed by using the experimental combinations (1:1) and the commercial formulation mixtures ratio. The results clarified that the combination between neonicotinoids and acetylcholinesterase inhibitors insecticides had a strong synergistic effect, with (CI) values ranging between 0.05 -0.56. On the other hand, the lowest combination index (CI) value was 0.05 in thiamethoxam/profenofos mixtures, indicating the strongest synergism. Likewise, similar results were obtained with the antifeedant pymetrozine, with CI values ranging between 0.34- 0.68. Neonicotinoids had an additive effect when mixed with the tested pyrethroids and abamectin. Synergized mixtures can help to establish a resistance management strategy, reduce costs, and provide broad spectrum activity to cover multiple target pests at the same time.
{"title":"Efficiency of Certain Neonicotinoid Mixtures Against the Cowpea Aphid, Aphis craccivora (Koch)","authors":"M. Kandil, E. Fouad, elsayed mokbel","doi":"10.21608/eajbsf.2022.259585","DOIUrl":"https://doi.org/10.21608/eajbsf.2022.259585","url":null,"abstract":"Insecticide combinations are a strategy for increasing toxicity, combating resistance, and overcoming resistance. Neonicotinoid mixtures have been recommended to control a variety of sucking insects. In this study, the combination index (CI) was used to examine the synergistic interactions of certain neonicotinoids (acetamiprid, thiamethoxam, and dinotefuran) with various insecticides. The interactions of neonicotinoid mixtures were assessed by using the experimental combinations (1:1) and the commercial formulation mixtures ratio. The results clarified that the combination between neonicotinoids and acetylcholinesterase inhibitors insecticides had a strong synergistic effect, with (CI) values ranging between 0.05 -0.56. On the other hand, the lowest combination index (CI) value was 0.05 in thiamethoxam/profenofos mixtures, indicating the strongest synergism. Likewise, similar results were obtained with the antifeedant pymetrozine, with CI values ranging between 0.34- 0.68. Neonicotinoids had an additive effect when mixed with the tested pyrethroids and abamectin. Synergized mixtures can help to establish a resistance management strategy, reduce costs, and provide broad spectrum activity to cover multiple target pests at the same time.","PeriodicalId":34633,"journal":{"name":"Egyptian Academic Journal of Biological Sciences F Toxicology and Pest Control","volume":"27 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77427520","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}
Pub Date : 2022-08-29DOI: 10.21608/eajbsf.2022.258598
A. Ghanayem, Mohamed. Foad, K. El Dougdoug, H. Eman
caused by Pcc. The results show that up to 90% and 100% of potato tubers inoculated with four Pcc isolates show distinctive soft rot with , 0.9x10 4, 0.3x10 4 and 0.6x10 3 PFU/g for Pcc 1, Pcc 2, Pcc 3 and Pcc 4, respectively, but the longevity of formulated phages not affected by storage more than three weeks with a concentration of 4x10 10 , 2x10 9 , 5x10 7 and 2x10 7 for Pcc 1, Pcc 2, Pcc 3 and Pcc 4, respectively. It was found that 10 7 and 10 9 PFU/ml compared to the initial concentrations did not decrease the efficacy of disease control. Potato yield increased with phage treatment up to 70% when all tubers were inoculated with Pcc isolates. The current findings corroborate those of Balogh (2002), who produced three formulations to increase the lifespan of bacteriophages on plant foliage for the management of tomato bacterial spots. These formulations were (i) PCF (0.5% pregelatinized corn flour (PCPF + 0.5% sucrose), (ii) Casecrete (0.5% Casecrete NH-400, a water-soluble casein protein polymer + 0.5% sucrose + 0.25% PCPF 400)), and (iii) skim milk (0.75% powdered skim milk + 0.5% sucrose). In comparison to non-formulated phage populations, these formulations resulted in a 4,700, 38,500, and 100,000-fold increase in phage populations two days after application. In field testing on tomato, the PCF, Casecrete, and skim milk formulations, as well as the non-formulated phages, all reduced disease severity by 22, 33, 27 and 19 percent, respectively, when compared to the usual copper-mancozeb therapy. In three field studies, the PCF and Casecrete formulations reduced disease severity by 11 and 21%, respectively, when compared to the non-formulated phage. relative the non-formulated
{"title":"Bacteriophage As a Promising Biocontrol Agent for Pectobacterium Carotovorum, Inciting Potato Soft Rot Disease","authors":"A. Ghanayem, Mohamed. Foad, K. El Dougdoug, H. Eman","doi":"10.21608/eajbsf.2022.258598","DOIUrl":"https://doi.org/10.21608/eajbsf.2022.258598","url":null,"abstract":"caused by Pcc. The results show that up to 90% and 100% of potato tubers inoculated with four Pcc isolates show distinctive soft rot with , 0.9x10 4, 0.3x10 4 and 0.6x10 3 PFU/g for Pcc 1, Pcc 2, Pcc 3 and Pcc 4, respectively, but the longevity of formulated phages not affected by storage more than three weeks with a concentration of 4x10 10 , 2x10 9 , 5x10 7 and 2x10 7 for Pcc 1, Pcc 2, Pcc 3 and Pcc 4, respectively. It was found that 10 7 and 10 9 PFU/ml compared to the initial concentrations did not decrease the efficacy of disease control. Potato yield increased with phage treatment up to 70% when all tubers were inoculated with Pcc isolates. The current findings corroborate those of Balogh (2002), who produced three formulations to increase the lifespan of bacteriophages on plant foliage for the management of tomato bacterial spots. These formulations were (i) PCF (0.5% pregelatinized corn flour (PCPF + 0.5% sucrose), (ii) Casecrete (0.5% Casecrete NH-400, a water-soluble casein protein polymer + 0.5% sucrose + 0.25% PCPF 400)), and (iii) skim milk (0.75% powdered skim milk + 0.5% sucrose). In comparison to non-formulated phage populations, these formulations resulted in a 4,700, 38,500, and 100,000-fold increase in phage populations two days after application. In field testing on tomato, the PCF, Casecrete, and skim milk formulations, as well as the non-formulated phages, all reduced disease severity by 22, 33, 27 and 19 percent, respectively, when compared to the usual copper-mancozeb therapy. In three field studies, the PCF and Casecrete formulations reduced disease severity by 11 and 21%, respectively, when compared to the non-formulated phage. relative the non-formulated","PeriodicalId":34633,"journal":{"name":"Egyptian Academic Journal of Biological Sciences F Toxicology and Pest Control","volume":"97 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89494124","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}
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