Pub Date : 2023-03-22DOI: 10.24425/JPPR.2018.124646
N. Khaledi, F. Hassani
Anthracnose disease caused by Colletotrichum lindemuthianum (Sacc. and Magnus) Lams-Scrib is one of the most devastating seed-borne diseases of common bean (Phaseolus vulgaris L.). In the present study, we evaluated the antifungal activity of Bunium persicum essential oil (EO) and its main constituents on mycelial growth, sporulation and spore germination inhibition of C. lindemuthianum. The main objective of this study was to investigate the effect of EO and its main constituents on decreasing the activity of cell wall degrading enzymes (CWDEs) produced by C. lindemuthianum, which are associated with disease progress. Also, the effects of seed treatment and foliar application of EO and its main constituent, cuminaldehyde, on anthracnose disease severity was investigated. The essential oil of B. persicum, was obtained by using a clevenger apparatus and its major constituents were identified by gas chromatography-mass spectrometry (GC-MS). The EO was characterized by the presence of major compounds such as cuminaldehyde (37.7%), γ-terpinene (17.1%) and β-pinene (15.4%), which indicated antifungal effects against C. lindemuthianum. This pathogen did not grow in the presence of EO, cuminaldehyde and γ-terpinene, β-pinene at 1,500; 1,010 and 1,835 ppm concentrations, respectively. Also, sporulation and spore germination of C. lindemuthianum was completely inhibited by EO and cuminaldehyde. Synergistic effects of the main constituents showed that combing γ-terpinene with cuminaldehyde induced a synergistic activity against C. lindemuthianum and in combination with β-pinene caused an additive effect. Activities of pectinase, cellulase and xylanase, as main CWDEs, were decreased by EO and its main constituents at low concentration without affecting mycelial growth. Seed treatment and foliar application of peppermint EO and/or cuminaldehyde significantly reduced the development of bean anthracnose. We introduced B. persicum EO and constituents, cuminaldehyde and γ-terpinene, as possible control agents for bean anthracnose.
{"title":"Antifungal activity of Bunium persicum essential oil and its constituents on growth and pathogenesis of Colletotrichum lindemuthianum","authors":"N. Khaledi, F. Hassani","doi":"10.24425/JPPR.2018.124646","DOIUrl":"https://doi.org/10.24425/JPPR.2018.124646","url":null,"abstract":"Anthracnose disease caused by Colletotrichum lindemuthianum (Sacc. and Magnus) Lams-Scrib is one of the most devastating seed-borne diseases of common bean (Phaseolus vulgaris L.). In the present study, we evaluated the antifungal activity of Bunium persicum essential oil (EO) and its main constituents on mycelial growth, sporulation and spore germination inhibition of C. lindemuthianum. The main objective of this study was to investigate the effect of EO and its main constituents on decreasing the activity of cell wall degrading enzymes (CWDEs) produced by C. lindemuthianum, which are associated with disease progress. Also, the effects of seed treatment and foliar application of EO and its main constituent, cuminaldehyde, on anthracnose disease severity was investigated. The essential oil of B. persicum, was obtained by using a clevenger apparatus and its major constituents were identified by gas chromatography-mass spectrometry (GC-MS). The EO was characterized by the presence of major compounds such as cuminaldehyde (37.7%), γ-terpinene (17.1%) and β-pinene (15.4%), which indicated antifungal effects against C. lindemuthianum. This pathogen did not grow in the presence of EO, cuminaldehyde and γ-terpinene, β-pinene at 1,500; 1,010 and 1,835 ppm concentrations, respectively. Also, sporulation and spore germination of C. lindemuthianum was completely inhibited by EO and cuminaldehyde. Synergistic effects of the main constituents showed that combing γ-terpinene with cuminaldehyde induced a synergistic activity against C. lindemuthianum and in combination with β-pinene caused an additive effect. Activities of pectinase, cellulase and xylanase, as main CWDEs, were decreased by EO and its main constituents at low concentration without affecting mycelial growth. Seed treatment and foliar application of peppermint EO and/or cuminaldehyde significantly reduced the development of bean anthracnose. We introduced B. persicum EO and constituents, cuminaldehyde and γ-terpinene, as possible control agents for bean anthracnose.","PeriodicalId":16848,"journal":{"name":"Journal of Plant Protection Research","volume":" ","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41709952","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}
L. Bacci, J. F. Rosado, M. Picanço, A. H. R. Gonring, Galdino Tarcísio Visintin da Silva, J. C. Martins
Control failure of pests and selectivity of insecticides to beneficial arthropods are key data for the implementation of Integrated Pest Management (IPM) programs. Therefore, the aim of this study was to assess the control failure likelihood of Plutella xylostella and the physiological selectivity active ingredients to parasitoid Oomyzus sokolowskii (Hymenoptera: Eulophidae) and to predators Polybia scutellaris (Hymenoptera: Vespidae) and Lasiochilus sp. (Hemiptera: Anthocoridae). In bioassays, P. xylostella larvae and O. sokolowskii, P. scutellaris and Lasiochilus sp. adults were used. Concentration-mortality curves of six insecticides for P. xylostella were established. These curves were used to estimate the mortality of P. xylostella at the recommended concentration, in order to check a control failure of insecticides to this pest. Furthermore, the lethal concentration for 90% of populations (LC90) and the half of LC90 were used in bioassays with the natural enemies to determine the selectivity of these insects to insecticides. All tested insecticides showed control failure to P. xylostella, indicated by high LC90 and low estimated mortalities (less than 80%). The cartap insecticide was selective in half of LC90 to Lasiochilus sp. and moderately selective in LC90 and the half of LC90, to Lasiochilus sp. and P. scutellaris, respectively. Deltamethrin was moderately selective in the half of LC90 to predator Lasiochilus sp. Cartap, carbaryl, and deltamethrin reduced the mortality of Lasiochilus sp. in the half LC90. The results also showed that the insecticides methamidophos, carbaryl, parathion methyl and permethrin were not selective to any of the tested natural enemies. The role of insecticides in IPM systems of Brassica crops is discussed based on their control failures to P. xylostella and selectivity to their natural enemies.
{"title":"Failure control of Plutella xylostella (Lepidoptera: Plutellidae) and selectivity of their natural enemies to different insecticides","authors":"L. Bacci, J. F. Rosado, M. Picanço, A. H. R. Gonring, Galdino Tarcísio Visintin da Silva, J. C. Martins","doi":"10.24425/122931","DOIUrl":"https://doi.org/10.24425/122931","url":null,"abstract":"Control failure of pests and selectivity of insecticides to beneficial arthropods are key data for the implementation of Integrated Pest Management (IPM) programs. Therefore, the aim of this study was to assess the control failure likelihood of Plutella xylostella and the physiological selectivity active ingredients to parasitoid Oomyzus sokolowskii (Hymenoptera: Eulophidae) and to predators Polybia scutellaris (Hymenoptera: Vespidae) and Lasiochilus sp. (Hemiptera: Anthocoridae). In bioassays, P. xylostella larvae and O. sokolowskii, P. scutellaris and Lasiochilus sp. adults were used. Concentration-mortality curves of six insecticides for P. xylostella were established. These curves were used to estimate the mortality of P. xylostella at the recommended concentration, in order to check a control failure of insecticides to this pest. Furthermore, the lethal concentration for 90% of populations (LC90) and the half of LC90 were used in bioassays with the natural enemies to determine the selectivity of these insects to insecticides. All tested insecticides showed control failure to P. xylostella, indicated by high LC90 and low estimated mortalities (less than 80%). The cartap insecticide was selective in half of LC90 to Lasiochilus sp. and moderately selective in LC90 and the half of LC90, to Lasiochilus sp. and P. scutellaris, respectively. Deltamethrin was moderately selective in the half of LC90 to predator Lasiochilus sp. Cartap, carbaryl, and deltamethrin reduced the mortality of Lasiochilus sp. in the half LC90. The results also showed that the insecticides methamidophos, carbaryl, parathion methyl and permethrin were not selective to any of the tested natural enemies. The role of insecticides in IPM systems of Brassica crops is discussed based on their control failures to P. xylostella and selectivity to their natural enemies.","PeriodicalId":16848,"journal":{"name":"Journal of Plant Protection Research","volume":"1 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68943170","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}
I. Elshahawy, H. Abouelnasr, S. Lashin, O. Darwesh
In August 2016, tomato plants grown during a hot, wet summer with heavy soil flooding, displaying symptoms of wilting, dead plant, root rot with crown and stem rot, at Beni Suef and Fayoum governorates were examined. A number of 16 fungal isolates were isolated from tomato plants displaying the above symptoms. These isolates were classified as belonging to six species, namely: Alternaria solani, Chaetomium globosum, Fusarium solani, Fusarium oxysporum, Pythium spp. and Rhizoctonia solani. Isolates of Pythium spp. were prevalent and were found to be more pathogenic than the other fungal isolates. This species causes damping-off, root rot, sudden death, stem rot and fruit rot. The pathogen was identified as Pythium aphanidermatum based on morphological, cultural, and molecular characteristics. Biogenic silver nanoparticles (AgNPs) were produced using the F. oxyspo rum strain and characterized by transmission electron microscopy (TEM). The size of these spherical particles ranged from 10 to 30 nm. In vitro, biogenic AgNPs showed antifungal activity against P. aphanidermatum. In greenhouse and field experiments, AgNPs treatment significantly reduced the incidence of dead tomato plants due to root rot caused by P. aphanidermatum compared to the control. All of the investigated treatments were effective and the treatment of root dipping plus soil drenching was the most effective. To the best of our knowledge, this study describes P. aphanidermatum on tomato in Egypt for the first time. Also, biogenic AgNPs could be used for controlling root rot disease caused by this pathogen.
{"title":"First report of Pythium aphanidermatum infecting tomato in Egypt and its control using biogenic silver nanoparticles","authors":"I. Elshahawy, H. Abouelnasr, S. Lashin, O. Darwesh","doi":"10.24425/122929","DOIUrl":"https://doi.org/10.24425/122929","url":null,"abstract":"In August 2016, tomato plants grown during a hot, wet summer with heavy soil flooding, displaying symptoms of wilting, dead plant, root rot with crown and stem rot, at Beni Suef and Fayoum governorates were examined. A number of 16 fungal isolates were isolated from tomato plants displaying the above symptoms. These isolates were classified as belonging to six species, namely: Alternaria solani, Chaetomium globosum, Fusarium solani, Fusarium oxysporum, Pythium spp. and Rhizoctonia solani. Isolates of Pythium spp. were prevalent and were found to be more pathogenic than the other fungal isolates. This species causes damping-off, root rot, sudden death, stem rot and fruit rot. The pathogen was identified as Pythium aphanidermatum based on morphological, cultural, and molecular characteristics. Biogenic silver nanoparticles (AgNPs) were produced using the F. oxyspo rum strain and characterized by transmission electron microscopy (TEM). The size of these spherical particles ranged from 10 to 30 nm. In vitro, biogenic AgNPs showed antifungal activity against P. aphanidermatum. In greenhouse and field experiments, AgNPs treatment significantly reduced the incidence of dead tomato plants due to root rot caused by P. aphanidermatum compared to the control. All of the investigated treatments were effective and the treatment of root dipping plus soil drenching was the most effective. To the best of our knowledge, this study describes P. aphanidermatum on tomato in Egypt for the first time. Also, biogenic AgNPs could be used for controlling root rot disease caused by this pathogen.","PeriodicalId":16848,"journal":{"name":"Journal of Plant Protection Research","volume":" ","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48398897","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}
The vegetation of allotment gardens is an important element of urban green areas and constitutes a habitat where many groups of insects exist, including aphids. This research involved the monitoring of winged morphs of aphids in allotment gardens in the area of Poznań with the use of Moericke traps. The fauna structure of aphids in two large allotment gardens was demonstrated by comparing the activity of winged morphs of aphids in 2000–2001 and 2014–2015. The vegetation of these gardens was accompanied by the rich fauna of aphids. For four growing seasons, 113 species or groups of aphid species were captured with the traps. Major changes were reported in the structure of the collected fauna in the period of time when the research was conducted. The differences concerned particular positions of collected species in aphid communities. The abundance of Anoecia corni, Aphis sambuci, Phorodon humuli and Periphyllus testudinaceus increased, and now hold the position of subdominants of the communities, whereas Myzus persicae and Hyalopterus pruni decreased in comparison with the situation more than ten years ago. Rhopalosiphum padi still remains an eudominant in the communities. The main reason for this phenomenon is thought to be due to changes in the vegetation composition of gardens because the gardens are being used differently. The production function has changed to recreation.
{"title":"Changes over the last ten years in the fauna structure of aphids inhabiting the vegetation of allotment gardens in Poznań","authors":"B. Wilkaniec, B. Borowiak-Sobkowiak, A. Wilkaniec","doi":"10.24425/119111","DOIUrl":"https://doi.org/10.24425/119111","url":null,"abstract":"The vegetation of allotment gardens is an important element of urban green areas and constitutes a habitat where many groups of insects exist, including aphids. This research involved the monitoring of winged morphs of aphids in allotment gardens in the area of Poznań with the use of Moericke traps. The fauna structure of aphids in two large allotment gardens was demonstrated by comparing the activity of winged morphs of aphids in 2000–2001 and 2014–2015. The vegetation of these gardens was accompanied by the rich fauna of aphids. For four growing seasons, 113 species or groups of aphid species were captured with the traps. Major changes were reported in the structure of the collected fauna in the period of time when the research was conducted. The differences concerned particular positions of collected species in aphid communities. The abundance of Anoecia corni, Aphis sambuci, Phorodon humuli and Periphyllus testudinaceus increased, and now hold the position of subdominants of the communities, whereas Myzus persicae and Hyalopterus pruni decreased in comparison with the situation more than ten years ago. Rhopalosiphum padi still remains an eudominant in the communities. The main reason for this phenomenon is thought to be due to changes in the vegetation composition of gardens because the gardens are being used differently. The production function has changed to recreation.","PeriodicalId":16848,"journal":{"name":"Journal of Plant Protection Research","volume":" ","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44218799","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 : 2023-03-22DOI: 10.24425/jppr.2022.140297
{"title":"Allelopathy of invasive weed Solanum elaeagnifolium Cav.: an investigation in germination, growth and soil properties","authors":"","doi":"10.24425/jppr.2022.140297","DOIUrl":"https://doi.org/10.24425/jppr.2022.140297","url":null,"abstract":"","PeriodicalId":16848,"journal":{"name":"Journal of Plant Protection Research","volume":" ","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46096545","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 : 2023-03-22DOI: 10.24425/jppr.2022.142134
Salit Supakitthanakorn, Kanjana Vichittragoontavorn, K. Kunasakdakul, O. Ruangwong
Chrysanthemum stunt viroid (CSVd) is a serious pathogen infecting chrysanthemum worldwide. To improve and enhance the detection procedure, a colorimetric loop-me-diated isothermal amplification (LAMP) technique was developed. Six LAMP primers were newly designed and tested to determine the optimal conditions using a recombinant plasmid of CSVd as a DNA template. The optimal conditions for colorimetric LAMP were incubation at 65°C for 45 min. Under these conditions, a ladder-like pattern of LAMP products was detected along with a change of color from pink to yellow in the positive reactions. Limits of the detection (LOD) of colorimetric LAMP were up to 1 fg ∙ µl –1 of plasmid DNA concentration which was 10 4 times greater than that of polymerase chain reaction (PCR). The developed colorimetric LAMP was not cross reacted to other viruses and viroids. From detection of actual samples and chrysanthemum plantlets which were obtained from meristem tip culture, the colorimetric LAMP showed effective potential in detecting CSVd. Therefore, the colorimetric LAMP can be used as a main technique to detect CSVd and ensure CSVd-free chrysanthemum plantlet production due to its accuracy, rapidness and sensitivity.
{"title":"Development of the colorimetric loop-mediated isothermal amplification technique for rapid and sensitive detection of chrysanthemum stunt viroid in chrysanthemum","authors":"Salit Supakitthanakorn, Kanjana Vichittragoontavorn, K. Kunasakdakul, O. Ruangwong","doi":"10.24425/jppr.2022.142134","DOIUrl":"https://doi.org/10.24425/jppr.2022.142134","url":null,"abstract":"Chrysanthemum stunt viroid (CSVd) is a serious pathogen infecting chrysanthemum worldwide. To improve and enhance the detection procedure, a colorimetric loop-me-diated isothermal amplification (LAMP) technique was developed. Six LAMP primers were newly designed and tested to determine the optimal conditions using a recombinant plasmid of CSVd as a DNA template. The optimal conditions for colorimetric LAMP were incubation at 65°C for 45 min. Under these conditions, a ladder-like pattern of LAMP products was detected along with a change of color from pink to yellow in the positive reactions. Limits of the detection (LOD) of colorimetric LAMP were up to 1 fg ∙ µl –1 of plasmid DNA concentration which was 10 4 times greater than that of polymerase chain reaction (PCR). The developed colorimetric LAMP was not cross reacted to other viruses and viroids. From detection of actual samples and chrysanthemum plantlets which were obtained from meristem tip culture, the colorimetric LAMP showed effective potential in detecting CSVd. Therefore, the colorimetric LAMP can be used as a main technique to detect CSVd and ensure CSVd-free chrysanthemum plantlet production due to its accuracy, rapidness and sensitivity.","PeriodicalId":16848,"journal":{"name":"Journal of Plant Protection Research","volume":" ","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45700223","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}
R. V. Filho, A. F. M. Silva, A. Albrecht, Damião Vitor Wilson, A. L. Giraldeli, Lucas Rafael de Marco, H. F. Placido, Albrecht Leandro Paiola
The aim of the present work was to evaluate the selectivity of nicosulfuron, alone and in combinations, applied in post-emergence (V4) of glyphosate and sulfonylurea tolerant (RR/STS) soybean. The experiments were conducted in 2015/16 and 2016/17, in Piracicaba – state of São Paulo (SP). In 2016/17, the experiment was also conducted in Palotina – state of Paraná (PR). The experiment was a randomized block design, with four repetitions and 16 treatments, with combinations of nicosulfuron, glyphosate, chlorimuron, sulfometuron and cloransulam, applied alone or in tank mixture. Crop injury and variables related to agronomic performance were evaluated. Data were subjected to analysis of variance and treatment means were compared by the Tukey test. The results obtained are significant in the positioning of herbicides in RR/STS soybean, since in the five experiments, all the treatments were selective, except for glyphosate + sulfometuron which reduced the yield of a cultivar (CD 2630 RR/STS) in the 2015/16 season.
{"title":"Selectivity of nicosulfuron isolated or in tank mixture to glyphosate and sulfonylurea tolerant soybean","authors":"R. V. Filho, A. F. M. Silva, A. Albrecht, Damião Vitor Wilson, A. L. Giraldeli, Lucas Rafael de Marco, H. F. Placido, Albrecht Leandro Paiola","doi":"10.24425/122930","DOIUrl":"https://doi.org/10.24425/122930","url":null,"abstract":"The aim of the present work was to evaluate the selectivity of nicosulfuron, alone and in combinations, applied in post-emergence (V4) of glyphosate and sulfonylurea tolerant (RR/STS) soybean. The experiments were conducted in 2015/16 and 2016/17, in Piracicaba – state of São Paulo (SP). In 2016/17, the experiment was also conducted in Palotina – state of Paraná (PR). The experiment was a randomized block design, with four repetitions and 16 treatments, with combinations of nicosulfuron, glyphosate, chlorimuron, sulfometuron and cloransulam, applied alone or in tank mixture. Crop injury and variables related to agronomic performance were evaluated. Data were subjected to analysis of variance and treatment means were compared by the Tukey test. The results obtained are significant in the positioning of herbicides in RR/STS soybean, since in the five experiments, all the treatments were selective, except for glyphosate + sulfometuron which reduced the yield of a cultivar (CD 2630 RR/STS) in the 2015/16 season.","PeriodicalId":16848,"journal":{"name":"Journal of Plant Protection Research","volume":" ","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44647684","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 : 2023-03-22DOI: 10.24425/jppr.2022.142130
{"title":"First report of the Nearctic planthopper Metcalfa pruinosa (Say, 1830) in Poland, its current status and potential threats (Hemiptera: Fulgoromorpha: Flatidae)","authors":"","doi":"10.24425/jppr.2022.142130","DOIUrl":"https://doi.org/10.24425/jppr.2022.142130","url":null,"abstract":"","PeriodicalId":16848,"journal":{"name":"Journal of Plant Protection Research","volume":" ","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42241948","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 : 2023-03-22DOI: 10.24425/jppr.2022.142135
The paper describes the impact of two different plant protection products on silkworm ( Bombyx mori L.) development. These products are commonly used in agrotechnical treatments and are officially allowed to use in ecological agriculture. They are also fungicides, which suggests lower negative impact on other groups of organisms. The two used products were Biosept Active Spray (grapefruit extract) and Miedzian 350 SC (copper oxychlo-ride) which were sprayed on mulberry leaves used to feed silkworms from the beginning of the 4th instar. As to measure the level of impact, the mortality of larvae (percentage of dead specimens) and cocoon shell ratio (percentage of shell weight in whole cocoon) were checked. The highest mortality was recorded in the group treated with 0,7% Miedzian solution (92,5%) as well as the lowest shell ratio (12,06) comparing to the control group (mortality 7,5% and shell ratio 17,43). In the Biosept group, no significant mortality was recorded (comparing to the control group) but mean shell ratio showed a significant decrease in the cocoon quality. The study shows that one of the pesticides is highly effective against a non-target organism.
{"title":"Impact of ecological plant protection products on mortality and cocoon shell ratio of mulberry silkworms ( Bombyx mori L.) – pilot studies","authors":"","doi":"10.24425/jppr.2022.142135","DOIUrl":"https://doi.org/10.24425/jppr.2022.142135","url":null,"abstract":"The paper describes the impact of two different plant protection products on silkworm ( Bombyx mori L.) development. These products are commonly used in agrotechnical treatments and are officially allowed to use in ecological agriculture. They are also fungicides, which suggests lower negative impact on other groups of organisms. The two used products were Biosept Active Spray (grapefruit extract) and Miedzian 350 SC (copper oxychlo-ride) which were sprayed on mulberry leaves used to feed silkworms from the beginning of the 4th instar. As to measure the level of impact, the mortality of larvae (percentage of dead specimens) and cocoon shell ratio (percentage of shell weight in whole cocoon) were checked. The highest mortality was recorded in the group treated with 0,7% Miedzian solution (92,5%) as well as the lowest shell ratio (12,06) comparing to the control group (mortality 7,5% and shell ratio 17,43). In the Biosept group, no significant mortality was recorded (comparing to the control group) but mean shell ratio showed a significant decrease in the cocoon quality. The study shows that one of the pesticides is highly effective against a non-target organism.","PeriodicalId":16848,"journal":{"name":"Journal of Plant Protection Research","volume":" ","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45296629","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：