Pub Date : 2022-06-01DOI: 10.21608/jppp.2022.138517.1073
Hanaa Elawady, S. Gad., E. A. Elsherbiny, A. El-sherif,
Survey of plants parasitic nematodes gives information about parasitic nematodes distribution and delivers supplementary information to agronomists about phyto-nematodes importance. A survey of four solanaceous plants i.e., potato, tomato, pepper, and eggplant grown within three counties in Dakahlia governorate i.e., El- Sinbillawain, Mansoura and Aga revealed the presence of 10 nematode genera i.e., Dorylaimus, Helicotylenchus, Hoplolaimus, Meloidogyne, Pratylenchus, Rotylenchulus, Trichodorus, Tylenchorhynchus , Tylenchus and Xiphinema . The root knot nematode, Meloidogyne spp. appeared to be the key pest as its documented 108 times with total percent incidence of 72.0 %, whereas, the nematode genera, Rotylenchulus and Trichodorus exhibited modest spreading as they occurred at rates of 55 and 50 times with percent incidence of 36.6 and 33.3%, respectively. On the other hand, Helicotylenchus and Xiphinema had the lowermost values of spreading as they occurred at rate of 13 times with percent incidence of 8.6 % for each one. However, Meloidogyne spp. showed greater rate of occurrence in clayey soil texture at El- Sinbillawain county with value of occurrence 75.8%. Potato and eggplants encountered highest nematode genera numbers with equal number (9), followed by tomato (8), while pepper have the lowest number (7) respectively.
{"title":"Frequency Occurrence and Population Density of Plant-Parasitic Nematodes Associated with Solanaceous Plantations Grown in Dakahlia Governorate","authors":"Hanaa Elawady, S. Gad., E. A. Elsherbiny, A. El-sherif,","doi":"10.21608/jppp.2022.138517.1073","DOIUrl":"https://doi.org/10.21608/jppp.2022.138517.1073","url":null,"abstract":"Survey of plants parasitic nematodes gives information about parasitic nematodes distribution and delivers supplementary information to agronomists about phyto-nematodes importance. A survey of four solanaceous plants i.e., potato, tomato, pepper, and eggplant grown within three counties in Dakahlia governorate i.e., El- Sinbillawain, Mansoura and Aga revealed the presence of 10 nematode genera i.e., Dorylaimus, Helicotylenchus, Hoplolaimus, Meloidogyne, Pratylenchus, Rotylenchulus, Trichodorus, Tylenchorhynchus , Tylenchus and Xiphinema . The root knot nematode, Meloidogyne spp. appeared to be the key pest as its documented 108 times with total percent incidence of 72.0 %, whereas, the nematode genera, Rotylenchulus and Trichodorus exhibited modest spreading as they occurred at rates of 55 and 50 times with percent incidence of 36.6 and 33.3%, respectively. On the other hand, Helicotylenchus and Xiphinema had the lowermost values of spreading as they occurred at rate of 13 times with percent incidence of 8.6 % for each one. However, Meloidogyne spp. showed greater rate of occurrence in clayey soil texture at El- Sinbillawain county with value of occurrence 75.8%. Potato and eggplants encountered highest nematode genera numbers with equal number (9), followed by tomato (8), while pepper have the lowest number (7) respectively.","PeriodicalId":16820,"journal":{"name":"Journal of Plant Protection and Pathology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80475566","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 : 2022-06-01DOI: 10.21608/jppp.2022.142440.1075
A. Khairy, Safaa A. M. Yousef, M. S. Hamada, E. Elsherbiny
Gray mold is a serious rot in postharvest tomato fruits caused by the fungal pathogen Botrytis cinerea . Botrytis is the most prevalent postharvest fungi that cause major losses in fresh fruits, vegetables, and ornamentals as well as can infect more than 500 plant species. This investigation was designed to evaluate the effect of Trichoderma culture filtrate on the fungal pathogen in vitro and in vivo conditions. The culture filtrate significantly reduced B. cinerea growth by 94.6, and 73.7% at concentrations of 70, and 60%, respectively. Moreover, the culture filtrate of T. reesei at 70% concentration caused an enormous reduction in incidence and severity of the disease by 80.5, and 90.5% in comparison with the untreated group respectively. The secondary metabolites of several species of Trichoderma had great antifungal activity on the pathogen B. cinerea , thereby might be a promising and eco-friendly strategy for controlling gray mold in tomatoes and various postharvest fruits and vegetables.
{"title":"Biocontrol of Gray Mold in Tomato Fruits by Trichoderma sp.","authors":"A. Khairy, Safaa A. M. Yousef, M. S. Hamada, E. Elsherbiny","doi":"10.21608/jppp.2022.142440.1075","DOIUrl":"https://doi.org/10.21608/jppp.2022.142440.1075","url":null,"abstract":"Gray mold is a serious rot in postharvest tomato fruits caused by the fungal pathogen Botrytis cinerea . Botrytis is the most prevalent postharvest fungi that cause major losses in fresh fruits, vegetables, and ornamentals as well as can infect more than 500 plant species. This investigation was designed to evaluate the effect of Trichoderma culture filtrate on the fungal pathogen in vitro and in vivo conditions. The culture filtrate significantly reduced B. cinerea growth by 94.6, and 73.7% at concentrations of 70, and 60%, respectively. Moreover, the culture filtrate of T. reesei at 70% concentration caused an enormous reduction in incidence and severity of the disease by 80.5, and 90.5% in comparison with the untreated group respectively. The secondary metabolites of several species of Trichoderma had great antifungal activity on the pathogen B. cinerea , thereby might be a promising and eco-friendly strategy for controlling gray mold in tomatoes and various postharvest fruits and vegetables.","PeriodicalId":16820,"journal":{"name":"Journal of Plant Protection and Pathology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85986676","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 : 2022-06-01DOI: 10.21608/jppp.2022.137671.1072
M. Ragab, A. Abd El-Kareim,, A. Rashed, S. Ahmed
The relationship between certain natural enemies (the pteromalid parasitoid, Anisopteromalus calandrae Howard (Hymenoptera: Pteromalidae); the predatory ant, Monomrium sp. and the predacious mite, Blattisocius sp . ) and some stored-grain insects was investigated under laboratory conditions. The parasitoid, A. calandrae exhibited a positive response to larval feces extracts of the cowpea beetle. Callosobruchus maculatus (F) and grain weevil, Sitophilus granarius (L)in acetone and ethanol solvents. Odors emitted by adult extracts of C. maculatus (in ether and acetone) or by Bruchidius incarnatus (in ethanol and acetone) significantly attracted the workers of the predatory ant, Monomrium sp. The searching rate and mutual interference values of the parasitoid, A. calandrae , and the predatory mite, Blattisocius sp . were estimated in response to different hosts. A. calandrae females showed a relatively higher searching rate and mutual interference value in response to C. maculatus reared on cowpea than those reared on chickpea grains. The predatory mite, Blattisocius sp . exhibited the highest searching rate with low mutual interference values on C. maculatus eggs in comparison with B. incarnatus eggs.
{"title":"Interaction between Certain Natural Enemies and some Stored-Grain Insect Pests","authors":"M. Ragab, A. Abd El-Kareim,, A. Rashed, S. Ahmed","doi":"10.21608/jppp.2022.137671.1072","DOIUrl":"https://doi.org/10.21608/jppp.2022.137671.1072","url":null,"abstract":"The relationship between certain natural enemies (the pteromalid parasitoid, Anisopteromalus calandrae Howard (Hymenoptera: Pteromalidae); the predatory ant, Monomrium sp. and the predacious mite, Blattisocius sp . ) and some stored-grain insects was investigated under laboratory conditions. The parasitoid, A. calandrae exhibited a positive response to larval feces extracts of the cowpea beetle. Callosobruchus maculatus (F) and grain weevil, Sitophilus granarius (L)in acetone and ethanol solvents. Odors emitted by adult extracts of C. maculatus (in ether and acetone) or by Bruchidius incarnatus (in ethanol and acetone) significantly attracted the workers of the predatory ant, Monomrium sp. The searching rate and mutual interference values of the parasitoid, A. calandrae , and the predatory mite, Blattisocius sp . were estimated in response to different hosts. A. calandrae females showed a relatively higher searching rate and mutual interference value in response to C. maculatus reared on cowpea than those reared on chickpea grains. The predatory mite, Blattisocius sp . exhibited the highest searching rate with low mutual interference values on C. maculatus eggs in comparison with B. incarnatus eggs.","PeriodicalId":16820,"journal":{"name":"Journal of Plant Protection and Pathology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73705942","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 : 2022-05-01DOI: 10.21608/jppp.2022.132496.1066
M. Zayed
Under laboratory conditions, the sub-lethal effects of four agents [silica bulk, silica nanoparticles (NPs), two synthesis agents (silica bulk-abamectin, silica NPs-abamectin)] were compared to one synthetic acaricide (abamectin) against Tetranychus urticae immature stages. Sublethal concentrations (LC 25 ) of the tested agents against adult females of T. urticae were determined using standard bioassay procedures. The effects of sublethal concentrations of the investigated compounds on egg deposition and egg hatchability were measured over five days at 22 and 28 degrees Celsius, respectively. The effects of the investigated substances on the duration (in hours) of T.urticae developmental phases were evaluated at two different temperatures 22 and 28 o C. The results showed that silica nanoparticles (NPs) coated with abamectin had a significant influence on egg deposited decrease by T. urticae adult females. By the way, silica NPs-abamectin was the most effective therapy for egg deposition and hatchability over five days at 22 and 28 o C respectively, followed by abamectin. Furthermore, silica NPs-abamectin was found to be very beneficial in prolonging the length (in hours) of T.urticae developmental stages at different temperatures. This research reveals that silica bulk and silica nanoparticles (NP) might be employed as replacements for conventional acaricides and are compatible with IPM approaches. They could be useful in the future for pest management.
{"title":"Silica Nanoparticles Boosted Abamectin's Acaricidal Bioactivity Against Tetranychus urticae Koch's Two Spotted Spider Mite Developmental Stages","authors":"M. Zayed","doi":"10.21608/jppp.2022.132496.1066","DOIUrl":"https://doi.org/10.21608/jppp.2022.132496.1066","url":null,"abstract":"Under laboratory conditions, the sub-lethal effects of four agents [silica bulk, silica nanoparticles (NPs), two synthesis agents (silica bulk-abamectin, silica NPs-abamectin)] were compared to one synthetic acaricide (abamectin) against Tetranychus urticae immature stages. Sublethal concentrations (LC 25 ) of the tested agents against adult females of T. urticae were determined using standard bioassay procedures. The effects of sublethal concentrations of the investigated compounds on egg deposition and egg hatchability were measured over five days at 22 and 28 degrees Celsius, respectively. The effects of the investigated substances on the duration (in hours) of T.urticae developmental phases were evaluated at two different temperatures 22 and 28 o C. The results showed that silica nanoparticles (NPs) coated with abamectin had a significant influence on egg deposited decrease by T. urticae adult females. By the way, silica NPs-abamectin was the most effective therapy for egg deposition and hatchability over five days at 22 and 28 o C respectively, followed by abamectin. Furthermore, silica NPs-abamectin was found to be very beneficial in prolonging the length (in hours) of T.urticae developmental stages at different temperatures. This research reveals that silica bulk and silica nanoparticles (NP) might be employed as replacements for conventional acaricides and are compatible with IPM approaches. They could be useful in the future for pest management.","PeriodicalId":16820,"journal":{"name":"Journal of Plant Protection and Pathology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79615897","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 : 2022-05-01DOI: 10.21608/jppp.2022.137239.1070
M. El-Deriny, E. Hammad
Nematodes are considered a severe agricultural concern. Meloidogyne nematodes can attack a wide range of plants, necessitating a variety of management techniques to reduce their population. The current study compared AGRN compost, VERMI compost in solid and tea shapes, and COMPOSTIVE compost to oxamyl as a chemical nematicide on cantaloupe (Cucumis melo var. cantalupensis) infected with root-knot nematode to determine its effect on cantaloupe growth under greenhouse and plastic house conditions. The results showed that all treatments improved plant growth parameters significantly in greenhouse settings. They also lowered the final population and rate of Meloidogyne incognita reproduction in soil and roots. The COMPOSTIVE compost and VERMI compost tea had the best effect on decreasing root-knot nematode population in the soil, number of galls, and egg masses on roots under plastic house conditions. In comparison to untreated plants, all treatments increased fruit weight. They also improved the fruit quality, with 12.7 % Total soluble solids (TSS), 3.90 mg/100ml total protein, and 15.31 mg/100ml total sugar after treatment with COMPOSTIVE compost.
线虫被认为是一个严重的农业问题。丝状线虫可以攻击范围广泛的植物，需要各种管理技术来减少其数量。本研究通过比较agn堆肥、VERMI固体和茶形堆肥以及复合堆肥与化学杀线虫剂oxamyl对根结线虫侵染的哈密瓜(Cucumis melo var. cantalupensis)在温室和塑料棚条件下对哈密瓜生长的影响。结果表明，在温室条件下，所有处理均显著改善了植株的生长参数。它们还降低了在土壤和根系中的最终种群数量和繁殖率。在塑房条件下，堆肥和VERMI堆肥茶对土壤根结线虫数量、虫瘿数和根上虫卵的减少效果最好。与未经处理的植株相比，所有处理均增加了果实重量。堆肥处理后果实总可溶性固形物(TSS)含量为12.7%，总蛋白含量为3.90 mg/100ml，总糖含量为15.31 mg/100ml。
{"title":"Efficiency of Amended Composts for Biocontrol of Root-Knot Nematode Infected Cantaloupe, Cucumis melo Var. Cantalupensis in Egypt","authors":"M. El-Deriny, E. Hammad","doi":"10.21608/jppp.2022.137239.1070","DOIUrl":"https://doi.org/10.21608/jppp.2022.137239.1070","url":null,"abstract":"Nematodes are considered a severe agricultural concern. Meloidogyne nematodes can attack a wide range of plants, necessitating a variety of management techniques to reduce their population. The current study compared AGRN compost, VERMI compost in solid and tea shapes, and COMPOSTIVE compost to oxamyl as a chemical nematicide on cantaloupe (Cucumis melo var. cantalupensis) infected with root-knot nematode to determine its effect on cantaloupe growth under greenhouse and plastic house conditions. The results showed that all treatments improved plant growth parameters significantly in greenhouse settings. They also lowered the final population and rate of Meloidogyne incognita reproduction in soil and roots. The COMPOSTIVE compost and VERMI compost tea had the best effect on decreasing root-knot nematode population in the soil, number of galls, and egg masses on roots under plastic house conditions. In comparison to untreated plants, all treatments increased fruit weight. They also improved the fruit quality, with 12.7 % Total soluble solids (TSS), 3.90 mg/100ml total protein, and 15.31 mg/100ml total sugar after treatment with COMPOSTIVE compost.","PeriodicalId":16820,"journal":{"name":"Journal of Plant Protection and Pathology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87373791","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 : 2022-05-01DOI: 10.21608/jppp.2022.135468.1069
A. Allah, U. Razek, R. Soleiman
Under environmental conditions of Burj El-Arab warehouse, Alexandria Governorate, Egypt, a storage experiment was carried out from 30 May 2020 to 26 February 2021 to become conscious of the effect of treatment with some chemical compounds (insecticides) i.e. deltamethrin at 1 and 2 ppm, malathion at 10 and 15 ppm and phosphine at 3 and 5 tablets/m and natural compounds (botanical oils) i.e. clove, coriander and lemongrass oils at 10 and 15% on storage efficiency of wheat after 9 months from harvesting time. The experiment had arranged in a factorial experiment in a randomized complete block design (RCBD) with three replications. The lowest insect infestation percentage and grains weight loss percentage and highest number of dead insects/samples were resulted from treating wheat grains with phosphine at 5 tablets/m. Treating wheat grains with lemongrass oil at the rate of 15% recorded the lowest insect infestation percentage and grains weight loss percentage and highest number of dead insects/sample. This study recommended treating samples of wheat grains with phosphine at 5 tablets/m besides lemongrass oil at 15% to enhance storage efficacy characters under the environmental conditions of Burj El-Arab district, Alexandria Governorate, Egypt.
{"title":"Lemongrass Oil Enhances the Storage Efficacy of Phosphine-Treated Grains Wheat","authors":"A. Allah, U. Razek, R. Soleiman","doi":"10.21608/jppp.2022.135468.1069","DOIUrl":"https://doi.org/10.21608/jppp.2022.135468.1069","url":null,"abstract":"Under environmental conditions of Burj El-Arab warehouse, Alexandria Governorate, Egypt, a storage experiment was carried out from 30 May 2020 to 26 February 2021 to become conscious of the effect of treatment with some chemical compounds (insecticides) i.e. deltamethrin at 1 and 2 ppm, malathion at 10 and 15 ppm and phosphine at 3 and 5 tablets/m and natural compounds (botanical oils) i.e. clove, coriander and lemongrass oils at 10 and 15% on storage efficiency of wheat after 9 months from harvesting time. The experiment had arranged in a factorial experiment in a randomized complete block design (RCBD) with three replications. The lowest insect infestation percentage and grains weight loss percentage and highest number of dead insects/samples were resulted from treating wheat grains with phosphine at 5 tablets/m. Treating wheat grains with lemongrass oil at the rate of 15% recorded the lowest insect infestation percentage and grains weight loss percentage and highest number of dead insects/sample. This study recommended treating samples of wheat grains with phosphine at 5 tablets/m besides lemongrass oil at 15% to enhance storage efficacy characters under the environmental conditions of Burj El-Arab district, Alexandria Governorate, Egypt.","PeriodicalId":16820,"journal":{"name":"Journal of Plant Protection and Pathology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89678656","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 : 2022-04-01DOI: 10.21608/jppp.2022.135170.1067
The tomato leafminer, Tuta absoluta is one the most important insect pests on tomato in both greenhouses and open field and can cause losses up to 80–100 % in tomato plants. Field study was carried out in a research farm located in Kafr El-Sheikh governorate during two successive years 2020 and 2021 to examine the influence of different tomato planting dates (February, June and September) on population density of T. absoluta and its predatory insects. The populations of T. absluta and its associated predators were affected by the date of plantation during both years. Using the direct count method, the highest peaks of T. absoluta larvae were recorded in June plantation during the first and second years (124 and 130 larvae/plant, respectively). Using male trap method, the highest peaks of T. absoluta male moths were recorded in June plantation during the first and second years (770 and 800 males/trap), respectively. By using both methods, September plantation of both years hosted the lowest average number of T. absoluta larvae and moths. In respect to the predatory insects of T. absoluta , the tomato bug, Nesidiocoris tenuis recorded the highest number in June plantation in the first and second years that represented by 300.0±70.5 and 286.9±89.9 individuals, respectively. Meanwhile, Coccinella undecimpunctata occupied the first rank in February plantation and represented by 3.4±0.7 and 3.0±0.5 individuals during the first and second years, respectively. September plantation came in the last category and recorded the lowest total average numbers of the predatory insects.
{"title":"Influence of Tomato Planting Dates on Population Density of the Tomato Leafminer Tuta absoluta and its Associated Predatory Insects","authors":"","doi":"10.21608/jppp.2022.135170.1067","DOIUrl":"https://doi.org/10.21608/jppp.2022.135170.1067","url":null,"abstract":"The tomato leafminer, Tuta absoluta is one the most important insect pests on tomato in both greenhouses and open field and can cause losses up to 80–100 % in tomato plants. Field study was carried out in a research farm located in Kafr El-Sheikh governorate during two successive years 2020 and 2021 to examine the influence of different tomato planting dates (February, June and September) on population density of T. absoluta and its predatory insects. The populations of T. absluta and its associated predators were affected by the date of plantation during both years. Using the direct count method, the highest peaks of T. absoluta larvae were recorded in June plantation during the first and second years (124 and 130 larvae/plant, respectively). Using male trap method, the highest peaks of T. absoluta male moths were recorded in June plantation during the first and second years (770 and 800 males/trap), respectively. By using both methods, September plantation of both years hosted the lowest average number of T. absoluta larvae and moths. In respect to the predatory insects of T. absoluta , the tomato bug, Nesidiocoris tenuis recorded the highest number in June plantation in the first and second years that represented by 300.0±70.5 and 286.9±89.9 individuals, respectively. Meanwhile, Coccinella undecimpunctata occupied the first rank in February plantation and represented by 3.4±0.7 and 3.0±0.5 individuals during the first and second years, respectively. September plantation came in the last category and recorded the lowest total average numbers of the predatory insects.","PeriodicalId":16820,"journal":{"name":"Journal of Plant Protection and Pathology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80832539","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 : 2022-04-01DOI: 10.21608/jppp.2022.137527.1071
H. Mohamed, H. Gad, H. Oraby
Culex pipiens was the main vector of Bancroftian filariasis that causes filariasis disease in Egypt. Effect of chlorpyrifos on field strains of C. pipiens in laboratory and their field breeding habitats were evaluated in village of Saft, Beni Suef Governorate, Egypt. Under laboratory conditions, all tested concentrations (0.5-25 ppm) of chlorpyrifos caused complete mortality of the larval instars compared to the control treatment. While, the pupal mortality significantly increased with increasing concentrations of chlorpyrifos and the highest pupal morality of C. pipiens was obtained at 25 ppm. Under semi field trials, the highest morality in immature stages of C. pipiens was obtained at concentration of 25 ppm which were 100.0, 100.0 and 96.7% for second and fourth larval instars and pupal stage, respectively after 48 h. While in under field conditions, the complete reduction in density of immature stages of C. pipiens in treated cement tanks with chlorpyrifos was at 25 ppm after 24 h. The reduction in C. pipiens density was slightly lower in other breeding habitats (Agriculture canals and drains). In agricultural canals, the percentages of reduction in density of second and fourth instars and pupal stage were 95.3, 81.9 and 87.5%, respectively after 24 h, while in drains were 87.0, 70.9 and 50.0%, respectively. Our results were indicated that chlorpyrifos was effective on C. pipiens in most of their breeding habitats.
{"title":"Effect of Chlorpyrifos on Field Strains of Culex Pipiens in their Breeding Habitats in Beni Suef Governorate, Egypt","authors":"H. Mohamed, H. Gad, H. Oraby","doi":"10.21608/jppp.2022.137527.1071","DOIUrl":"https://doi.org/10.21608/jppp.2022.137527.1071","url":null,"abstract":"Culex pipiens was the main vector of Bancroftian filariasis that causes filariasis disease in Egypt. Effect of chlorpyrifos on field strains of C. pipiens in laboratory and their field breeding habitats were evaluated in village of Saft, Beni Suef Governorate, Egypt. Under laboratory conditions, all tested concentrations (0.5-25 ppm) of chlorpyrifos caused complete mortality of the larval instars compared to the control treatment. While, the pupal mortality significantly increased with increasing concentrations of chlorpyrifos and the highest pupal morality of C. pipiens was obtained at 25 ppm. Under semi field trials, the highest morality in immature stages of C. pipiens was obtained at concentration of 25 ppm which were 100.0, 100.0 and 96.7% for second and fourth larval instars and pupal stage, respectively after 48 h. While in under field conditions, the complete reduction in density of immature stages of C. pipiens in treated cement tanks with chlorpyrifos was at 25 ppm after 24 h. The reduction in C. pipiens density was slightly lower in other breeding habitats (Agriculture canals and drains). In agricultural canals, the percentages of reduction in density of second and fourth instars and pupal stage were 95.3, 81.9 and 87.5%, respectively after 24 h, while in drains were 87.0, 70.9 and 50.0%, respectively. Our results were indicated that chlorpyrifos was effective on C. pipiens in most of their breeding habitats.","PeriodicalId":16820,"journal":{"name":"Journal of Plant Protection and Pathology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82005931","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 : 2022-04-01DOI: 10.21608/jppp.2022.135171.1068
S. Awadalla, M. Bayoumy, E. Abdou, M. Olyme, Nesreen EL-Mowafy
Tuta absoluta is a serious pest infesting tomato with 80-100% losses. Nesidiocoris tenuis is a zoophytophagous species that feed on both tomato plants and T. absoluta . Effect of plantation dates on both species during 2020 and 2021 seasons was examined. Further, effect of food types on biological aspects of N. tenuis was investigated. In February plantation, the highest density of N. tenuis was recorded on the fourth-week of May of both seasons, while the highest density for T. absoluta was on the fourth-and second-weeks of April and May during the first and second seasons, respectively. In June plantation, the highest densities of N. tenuis and T. absoluta were on the fourth-weeks of September and August during both seasons, respectively. In September plantation, the highest density of N. tenuis was on the second- and third-weeks of October during the first and second seasons, respectively, while the highest density for T. absoluta was on the first-week of January during both seasons. The numbers of N. tenuis positively coincided with those of T. absoluta during February and June plantations. No significant difference in egg period between females that fed on tomato plants or infested tomato plants with T. absoluta was detected. The nymphal stage duration of N. tenuis was shorter when fed on infested tomato plants with T. absoluta than on tomato plants or T. absoluta larvae. The adult fed with the infested tomato plants with T. absoluta lived and produced more eggs than those fed tomato plants or T. absoluta larvae.
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Pub Date : 2022-04-01DOI: 10.21608/jppp.2022.131827.1064
حيدر عباس الجنابي, عبد الأمير سمير سعدون, عامر عبد الحسين عباس
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