Pub Date : 2023-01-01DOI: 10.21608/mjapam.2023.284479
A. Abotaleb, R. Zinhoum
{"title":"EVALUATION OF THE MORTALITY EFFECT OF NATURAL ZEOLITE FORMULATION AND THE MODE OF ACTION IN THE PROTECTION OF DRY FRUITS FROM EPHESTIA CAUTELLA AND STEGOBIUM PANICEUM INFESTATION","authors":"A. Abotaleb, R. Zinhoum","doi":"10.21608/mjapam.2023.284479","DOIUrl":"https://doi.org/10.21608/mjapam.2023.284479","url":null,"abstract":"","PeriodicalId":332125,"journal":{"name":"Menoufia Journal of Plant Protection","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122327564","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 : 2022-11-01DOI: 10.21608/mjapam.2022.273462
N. Shaaban, A. El-Shazly, A. M. Alnaggar
,
，
{"title":"BIOLOGICAL CONTROL OF WHITE MOULD DISEASE ON DRY BEAN CAUSED BY SCLEROTINIA SCLEROTIORUM IN EGYPT","authors":"N. Shaaban, A. El-Shazly, A. M. Alnaggar","doi":"10.21608/mjapam.2022.273462","DOIUrl":"https://doi.org/10.21608/mjapam.2022.273462","url":null,"abstract":",","PeriodicalId":332125,"journal":{"name":"Menoufia Journal of Plant Protection","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124646740","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 : 2022-11-01DOI: 10.21608/mjapam.2022.273704
M. Ammar, Rehab Harfoush, H. Awad
{"title":"EFFECT OF SOME PLANT EXTRACTS AND ESSENTIAL OILS ON FABA BEAN WILT CAUSED BY FUSARIUM OXYSPORUM F.SP. FABAE","authors":"M. Ammar, Rehab Harfoush, H. Awad","doi":"10.21608/mjapam.2022.273704","DOIUrl":"https://doi.org/10.21608/mjapam.2022.273704","url":null,"abstract":"","PeriodicalId":332125,"journal":{"name":"Menoufia Journal of Plant Protection","volume":"70 3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124107257","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 : 2022-11-01DOI: 10.21608/mjapam.2022.273829
Ahmed Mohamed Mansour Mohamed, M. Sweelam, H. Heikal, Amal I Abo Zaed
{"title":"Advanced studies on spiders associated with pests on cotton plants in Egypt","authors":"Ahmed Mohamed Mansour Mohamed, M. Sweelam, H. Heikal, Amal I Abo Zaed","doi":"10.21608/mjapam.2022.273829","DOIUrl":"https://doi.org/10.21608/mjapam.2022.273829","url":null,"abstract":"","PeriodicalId":332125,"journal":{"name":"Menoufia Journal of Plant Protection","volume":"1053 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123153877","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 : 2022-08-01DOI: 10.21608/mjapam.2022.258135
H. Awad, M. El-Khafagy, Sanaa El-khateeb, M. Ammar
: Pestalotiopsis mangiferae the causal organism of Mango fruits black spot, was highly isolated from three governorates in Egypt. Plant extracts of Clove, Camphor, Oleander, Gall, and Garlic, also some essential oils such as clove, mint, garlic, and camphor were tested on the inhibition, growth, and sporulation of Pestalotiopsis mangifera both under laboratory and field conditions. Under laboratory condition, clove plant extracts suppressed the growth of Pestalotiopsis mangiferae at all tested concentration (10, 15 and 20%). The extracts of garlic and galls had the second and third ranks, in this respect. All tested plant oils reduced the growth of Pestalotiopsis mangiferae significantly in comparison with control. Mint oil followed by camphor on had the best efficiency in reducing the fungal growth. Under field condition application of either galls and/or clove oil and clove extracts (5%) gave the best result. Moreover, the average number of healthy fruits per tree recorded 35 and 34, respectively, in response to the application of galls and clove plant extracts. Also, the Shelf-life period of mango fruit; both artificially inoculated with Pestalotiopsis mangiferae or not; was increased in response to the application of either plant extracts and/or plant oil; significantly.
{"title":"EFFECT OF PLANT EXTRACTS AND ESSENTIAL OILS ON PESTALOTIOPSIS MANGIFERA; CAUSING BLACK SPOT DISEASE ON MANGO","authors":"H. Awad, M. El-Khafagy, Sanaa El-khateeb, M. Ammar","doi":"10.21608/mjapam.2022.258135","DOIUrl":"https://doi.org/10.21608/mjapam.2022.258135","url":null,"abstract":": Pestalotiopsis mangiferae the causal organism of Mango fruits black spot, was highly isolated from three governorates in Egypt. Plant extracts of Clove, Camphor, Oleander, Gall, and Garlic, also some essential oils such as clove, mint, garlic, and camphor were tested on the inhibition, growth, and sporulation of Pestalotiopsis mangifera both under laboratory and field conditions. Under laboratory condition, clove plant extracts suppressed the growth of Pestalotiopsis mangiferae at all tested concentration (10, 15 and 20%). The extracts of garlic and galls had the second and third ranks, in this respect. All tested plant oils reduced the growth of Pestalotiopsis mangiferae significantly in comparison with control. Mint oil followed by camphor on had the best efficiency in reducing the fungal growth. Under field condition application of either galls and/or clove oil and clove extracts (5%) gave the best result. Moreover, the average number of healthy fruits per tree recorded 35 and 34, respectively, in response to the application of galls and clove plant extracts. Also, the Shelf-life period of mango fruit; both artificially inoculated with Pestalotiopsis mangiferae or not; was increased in response to the application of either plant extracts and/or plant oil; significantly.","PeriodicalId":332125,"journal":{"name":"Menoufia Journal of Plant Protection","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116294630","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/mjapam.2022.247520
M. Abo-Korah
: This experiment was conducted to evaluate the efficacy of saponin extract, algae, Chlorella vulgaris , and a bio-nematicide BioNematon (commercial formulation of the Paecilomyces lilacinus, half dose) and the possibility of creating an integrated control program on root-knot nematodes infected cowpea under field conditions compared to chemical nematicide, Carbofuran, as well as the effect of these treatments on the vegetative characteristics of cowpea plants. All treatments caused reduction percentages in root-knot nematode Meloidogyne incognita juveniles, to take into the triple treatment (saponin extract + algae + BioNematon half dose) which gave the highest reduction percentage (82.6%), followed by the chemical nematicide Carbofuran (80.3%), then the BioNematon half dose, algae and saponin extract solely by achievement (67.3, 66.3 and 58.4%), respectively, compared with control. Tribble treatment (saponin extract + algae + BioNematon) caused significant decrease in mature females, egg masses and root galls (82.9, 85.8, 80%) and it was (81.1, 82.8 and 80.0%) for Carbofuran treatment , respectively. As well as, triple treatment also improved the vegetative properties of cowpea plants, caused an increase in plant height, shoot weight and root weight by percentages (75.3, 78.8 and 96.3%) while contrariwise occurred by appliance of Carbofuran (46.9, 38.7 and 83.7%), respectively, compared to the control. This study succinct recommended that, the use of triple treatment (saponin extract + algae + BioNematon half dose) as an integrated control program for M. incognita which infected cowpea plants practically considerable by its safety, inexpensive, harmlessness, in addition it also reduced root-knot nematode, M. incognita juveniles, mature females, root galls, and improved the vegetative properties of cowpea plants in greater proportions than the chemical nematicide Carbofuran.
{"title":"INTEGRATED MANAGEMENT OF ROOT- KNOT NEMATODE, MELOIDOGYNE INCOGNITA INFECTING COWPEA PLANTS","authors":"M. Abo-Korah","doi":"10.21608/mjapam.2022.247520","DOIUrl":"https://doi.org/10.21608/mjapam.2022.247520","url":null,"abstract":": This experiment was conducted to evaluate the efficacy of saponin extract, algae, Chlorella vulgaris , and a bio-nematicide BioNematon (commercial formulation of the Paecilomyces lilacinus, half dose) and the possibility of creating an integrated control program on root-knot nematodes infected cowpea under field conditions compared to chemical nematicide, Carbofuran, as well as the effect of these treatments on the vegetative characteristics of cowpea plants. All treatments caused reduction percentages in root-knot nematode Meloidogyne incognita juveniles, to take into the triple treatment (saponin extract + algae + BioNematon half dose) which gave the highest reduction percentage (82.6%), followed by the chemical nematicide Carbofuran (80.3%), then the BioNematon half dose, algae and saponin extract solely by achievement (67.3, 66.3 and 58.4%), respectively, compared with control. Tribble treatment (saponin extract + algae + BioNematon) caused significant decrease in mature females, egg masses and root galls (82.9, 85.8, 80%) and it was (81.1, 82.8 and 80.0%) for Carbofuran treatment , respectively. As well as, triple treatment also improved the vegetative properties of cowpea plants, caused an increase in plant height, shoot weight and root weight by percentages (75.3, 78.8 and 96.3%) while contrariwise occurred by appliance of Carbofuran (46.9, 38.7 and 83.7%), respectively, compared to the control. This study succinct recommended that, the use of triple treatment (saponin extract + algae + BioNematon half dose) as an integrated control program for M. incognita which infected cowpea plants practically considerable by its safety, inexpensive, harmlessness, in addition it also reduced root-knot nematode, M. incognita juveniles, mature females, root galls, and improved the vegetative properties of cowpea plants in greater proportions than the chemical nematicide Carbofuran.","PeriodicalId":332125,"journal":{"name":"Menoufia Journal of Plant Protection","volume":"113 21","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120826595","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/mjapam.2022.247518
,. A. Abd El-Raheem, ,. M. Sweelam, ,. S. M. Abo Taka, ,. M. M. Mousa
{"title":"FUMIGANT TOXICITY OF SOME PLANT VOLATILE OILS AGAINST STORED GRAIN WEEVILS","authors":",. A. Abd El-Raheem, ,. M. Sweelam, ,. S. M. Abo Taka, ,. M. M. Mousa","doi":"10.21608/mjapam.2022.247518","DOIUrl":"https://doi.org/10.21608/mjapam.2022.247518","url":null,"abstract":"","PeriodicalId":332125,"journal":{"name":"Menoufia Journal of Plant Protection","volume":"120 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116358854","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 : 2022-03-01DOI: 10.21608/mjapam.2022.228662
,. S. H. Elhelaly, ,. M. El-shennawy
: Tomato mosaic virus (ToMV) was isolated from naturally infected bell pepper plants in different areas at Menoufia Governorate, Egypt. The isolates were characterized by its reaction in indicator host ( Nicotiana glutinosa L.) and systemic host ( Capsicum annum L cv. Balady), serological reaction (DAS-ELISA, TIBA and DIBA) and electron microscope (EM). In addition to estimate the effect of four plants leaf extracts, guava ( Psidium guajava ), solanum ( Solanum nigrum ), spinach( Spinacea oleracea ) and thyme ( Thymus vulgaris ) with three concentrations ( 2.5-5-10 % of stock ethanolic crude extract) on ToMV infection. Results showed that all plant extracts were efficient in reducing the local lesion formation by the virus on Nicotiana glutinosa . The extract of Solanum nigrum gave the highest inhibition percentage at all concentrations. Percentage of infection and disease severity (%) of bell pepper plants ( Capsicum annum L cv. Balady) were measured in response to systemic induced resistance (SIR) to ToMV infection. Treating of all inducers on infected bean leaves were effective in reducing infection percentage and disease severity compared to infected control. Extract of Solanum nigrum L. was the greatest efficient against ToMV as a factor of resistance induction. It reduced percentage of infection by (20 %) compared to un-treated control (92%) and reduced disease severity by (15 %) compared to untreated control (89.34%).
:从埃及梅努菲亚省不同地区自然感染的甜椒植株中分离到番茄花叶病毒(ToMV)。该菌株对指示寄主(Nicotiana glutinosa L.)和系统寄主(Capsicum annum L cv.)均有反应。Balady)，血清学反应(DAS-ELISA, TIBA和DIBA)和电子显微镜(EM)。此外，对番石榴(Psidium guajava)、龙葵(solanum nigrum)、菠菜(Spinacea oleracea)和百里香(thyymus vulgaris)三种浓度(2.5-5- 10%乙醇粗提物)四种植物叶片提取物对ToMV感染的影响进行了评估。结果表明，所有植物提取物均能有效减少病毒对烟叶的局部损害。在不同浓度下，龙葵提取物的抑菌率最高。甜椒(Capsicum annum L cv)植株侵染率和病害严重程度百分比(%)。Balady)对ToMV感染的系统性诱导抗性(SIR)反应进行了测量。所有诱导剂在感染的豆叶上处理，与感染对照相比，都能有效降低侵染率和疾病严重程度。作为诱导因子，茄提取物对ToMV的抗性最强。与未经治疗的对照组(92%)相比，感染百分比降低了(20%)，疾病严重程度与未经治疗的对照组(89.34%)相比降低了(15%)。
{"title":"DIFFERENT DETECTION METHODS OF TOMATO MOSAIC VIRUS (TOMV) AND INDUCING RESISTANCE ON BELL PEPPER BY SOME PLANT EXTRACTS","authors":",. S. H. Elhelaly, ,. M. El-shennawy","doi":"10.21608/mjapam.2022.228662","DOIUrl":"https://doi.org/10.21608/mjapam.2022.228662","url":null,"abstract":": Tomato mosaic virus (ToMV) was isolated from naturally infected bell pepper plants in different areas at Menoufia Governorate, Egypt. The isolates were characterized by its reaction in indicator host ( Nicotiana glutinosa L.) and systemic host ( Capsicum annum L cv. Balady), serological reaction (DAS-ELISA, TIBA and DIBA) and electron microscope (EM). In addition to estimate the effect of four plants leaf extracts, guava ( Psidium guajava ), solanum ( Solanum nigrum ), spinach( Spinacea oleracea ) and thyme ( Thymus vulgaris ) with three concentrations ( 2.5-5-10 % of stock ethanolic crude extract) on ToMV infection. Results showed that all plant extracts were efficient in reducing the local lesion formation by the virus on Nicotiana glutinosa . The extract of Solanum nigrum gave the highest inhibition percentage at all concentrations. Percentage of infection and disease severity (%) of bell pepper plants ( Capsicum annum L cv. Balady) were measured in response to systemic induced resistance (SIR) to ToMV infection. Treating of all inducers on infected bean leaves were effective in reducing infection percentage and disease severity compared to infected control. Extract of Solanum nigrum L. was the greatest efficient against ToMV as a factor of resistance induction. It reduced percentage of infection by (20 %) compared to un-treated control (92%) and reduced disease severity by (15 %) compared to untreated control (89.34%).","PeriodicalId":332125,"journal":{"name":"Menoufia Journal of Plant Protection","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114233756","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 : 2022-03-01DOI: 10.21608/mjapam.2022.228663
,. H. M. Mahfouz, M. A. Abd Al-Fattah,
The climatic changes during the last two decades enhanced the invasion and establishment of Vespa orientalis in North Sinai governorate. This study was carried out using the modified hive trap in honeybee apiary at Al-Arish province, to monitor the seasonal abundance, diurnal activity and negative impact of Vespa orientalis as predartor on bee colonies for two successive years (2019 & 2020). The relationships between optimum air temperatures and relative humidity and the dynamic fluctuations of hornet are taken in consideration. The results showed that there are increase in temperature and RH by means of 4.7C° and 2.9 % after thirteen years of the first record of this hornet in North Sinai region. High significant and significant positive correlations were found between the population dynamic of oriental hornet and both temperature and RH, respectively. Few individuals of hornet start to appear from March till May, then low population was observed in June followed by gradual increase from the first week of July up to the end of October. In the two studied years, the highest numbers of hornet were recorded during the first and fourth weeks of September. The wasp tends to disappear from the second fortnight of November. For the diurnal activity of hornet, the highest significant numbers were caught during the periods from 9am till 12 pm and from 12 pm till 3pm in July and August, meanwhile the period before 9 am and after 3pm recorded the lowest numbers of hornet. However, during September and October the highest trapped numbers was alternate toward the second half of the daytime, (12pm to 6pm). The effects of hornet attacking pressure on honeybee colonies start to appear from the 4th week of August in 2019 and from the 2nd week of September in 2020. The highest eradication percentages of bee colonies were in October (25.3% in 2019) and November (19.1% in 2020). The total wiped out percentages of attacked colonies were 57.3 % and 44.1 % during the two years, respectively. It concluded that the future sustainable beekeeping in North Sinai under a great thereat due to the predator of V. orientalis and the efforts must be cooperative to introduce an Integrated Management Control Program included the modified hive traps.
{"title":"CLIMATIC CHANGES EXPOSE HONEYBEE COLONIES TO ERADICATION DUE TO INCREASING FEROCITY OF ATTACKING PREDATOR, ORIENTAL HORNET VESPA ORIENTALIS L, IN NORTH SINAI REGION","authors":",. H. M. Mahfouz, M. A. Abd Al-Fattah,","doi":"10.21608/mjapam.2022.228663","DOIUrl":"https://doi.org/10.21608/mjapam.2022.228663","url":null,"abstract":"The climatic changes during the last two decades enhanced the invasion and establishment of Vespa orientalis in North Sinai governorate. This study was carried out using the modified hive trap in honeybee apiary at Al-Arish province, to monitor the seasonal abundance, diurnal activity and negative impact of Vespa orientalis as predartor on bee colonies for two successive years (2019 & 2020). The relationships between optimum air temperatures and relative humidity and the dynamic fluctuations of hornet are taken in consideration. The results showed that there are increase in temperature and RH by means of 4.7C° and 2.9 % after thirteen years of the first record of this hornet in North Sinai region. High significant and significant positive correlations were found between the population dynamic of oriental hornet and both temperature and RH, respectively. Few individuals of hornet start to appear from March till May, then low population was observed in June followed by gradual increase from the first week of July up to the end of October. In the two studied years, the highest numbers of hornet were recorded during the first and fourth weeks of September. The wasp tends to disappear from the second fortnight of November. For the diurnal activity of hornet, the highest significant numbers were caught during the periods from 9am till 12 pm and from 12 pm till 3pm in July and August, meanwhile the period before 9 am and after 3pm recorded the lowest numbers of hornet. However, during September and October the highest trapped numbers was alternate toward the second half of the daytime, (12pm to 6pm). The effects of hornet attacking pressure on honeybee colonies start to appear from the 4th week of August in 2019 and from the 2nd week of September in 2020. The highest eradication percentages of bee colonies were in October (25.3% in 2019) and November (19.1% in 2020). The total wiped out percentages of attacked colonies were 57.3 % and 44.1 % during the two years, respectively. It concluded that the future sustainable beekeeping in North Sinai under a great thereat due to the predator of V. orientalis and the efforts must be cooperative to introduce an Integrated Management Control Program included the modified hive traps.","PeriodicalId":332125,"journal":{"name":"Menoufia Journal of Plant Protection","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127651977","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 : 2022-03-01DOI: 10.21608/mjapam.2022.229336
,. L. T. Zidan, M. Abd-elaziz, ,. G. E. Abouelghar, ,. A. E. Elsheikh, ,. H. A. Ammar
: Responses of whitefly, Bemisia tabaci (Gennadius), adults to several classes of insecticides were determined using two different bioassays. The toxicity data showed that adult-vial bioassay was more sensitive technique than leaf-residue bioassay. LC 50 values of most insecticides tested were < 1.0 µg/vial. The neonicotinoid imidacloprid was the most toxic insecticide (0.11 µg/vial) followed by buprofezin, abamectin, thiamethoxam and pyriproxyfen, whereas methomyl had the lowest toxicity. Status of insecticide resistance levels in three field strains of whitefly was reported using leaf-residue technique. The resistance levels to most selected insecticides were lower especially in BNS-strain indicating RR 2.1-fold compared to the Lab-SUS strain, whereas slight increases in resistance levels ranged from 3.0- to 5.4- fold for the conventional insecticides tested were detected in all three field strains. The acetylcholinesterase (AChE), non-specific esterases (EST), and phosphatase activities in the tested field strains and susceptible laboratory strain were examined to better understand biochemical mechanisms of resistance. Highest esterase activity was observed for the MNF and FYM strains in comparison with that for the Lab-SUS. AChE activity was also significantly higher in all field strains tested by ~ 5.3-7.6-fold more than that in the SUS strain. In addition, significant increases in the activities of both acid- and alkaline-phosphatase were reported for MNF and FYM strains than these in the SUS strain. These results provide baseline information for further research on the involvement of esterases in the resistance mechanisms of field populations of the
{"title":"BIOCHEMICAL MECHANISMS OF INSECTICIDE RESISTANCE IN SOME FIELD POPULATIONS OF BEMISIA TABACI (HEMIPTERA: ALEYRODIDAE)","authors":",. L. T. Zidan, M. Abd-elaziz, ,. G. E. Abouelghar, ,. A. E. Elsheikh, ,. H. A. Ammar","doi":"10.21608/mjapam.2022.229336","DOIUrl":"https://doi.org/10.21608/mjapam.2022.229336","url":null,"abstract":": Responses of whitefly, Bemisia tabaci (Gennadius), adults to several classes of insecticides were determined using two different bioassays. The toxicity data showed that adult-vial bioassay was more sensitive technique than leaf-residue bioassay. LC 50 values of most insecticides tested were < 1.0 µg/vial. The neonicotinoid imidacloprid was the most toxic insecticide (0.11 µg/vial) followed by buprofezin, abamectin, thiamethoxam and pyriproxyfen, whereas methomyl had the lowest toxicity. Status of insecticide resistance levels in three field strains of whitefly was reported using leaf-residue technique. The resistance levels to most selected insecticides were lower especially in BNS-strain indicating RR 2.1-fold compared to the Lab-SUS strain, whereas slight increases in resistance levels ranged from 3.0- to 5.4- fold for the conventional insecticides tested were detected in all three field strains. The acetylcholinesterase (AChE), non-specific esterases (EST), and phosphatase activities in the tested field strains and susceptible laboratory strain were examined to better understand biochemical mechanisms of resistance. Highest esterase activity was observed for the MNF and FYM strains in comparison with that for the Lab-SUS. AChE activity was also significantly higher in all field strains tested by ~ 5.3-7.6-fold more than that in the SUS strain. In addition, significant increases in the activities of both acid- and alkaline-phosphatase were reported for MNF and FYM strains than these in the SUS strain. These results provide baseline information for further research on the involvement of esterases in the resistance mechanisms of field populations of the","PeriodicalId":332125,"journal":{"name":"Menoufia Journal of Plant Protection","volume":"52 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120841863","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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