Plant Health Progress最新文献_第9页

Integration of host resistance, seed treatment, and seeding rate for management of sudden death syndrome, a disease of soybean caused by Fusarium virguliforme 寄主抗性、种子处理和播种率的整合用于处理由镰刀菌引起的大豆猝死综合征

IF 2.3

Plant Health Progress Pub Date : 2023-05-17 DOI: 10.1094/php-04-22-0036-rs

Y. Kandel, Mariama T. Brown, A. Byrne, J. Jacobs, M. Chilvers, Edward M. Ernat, N. Kleczewski, B. Mueller, D. Telenko, A. Tenuta, Damon L. Smith, D. Mueller

{"title":"Integration of host resistance, seed treatment, and seeding rate for management of sudden death syndrome, a disease of soybean caused by Fusarium virguliforme","authors":"Y. Kandel, Mariama T. Brown, A. Byrne, J. Jacobs, M. Chilvers, Edward M. Ernat, N. Kleczewski, B. Mueller, D. Telenko, A. Tenuta, Damon L. Smith, D. Mueller","doi":"10.1094/php-04-22-0036-rs","DOIUrl":"https://doi.org/10.1094/php-04-22-0036-rs","url":null,"abstract":"Field experiments were conducted in Illinois, Indiana, Iowa, Michigan, Wisconsin and Ontario Canada in 2019 and 2020 to evaluate the integrated effects of host resistance, seed treatment, and seeding rates on root rot (RR) and foliar symptoms of sudden death syndrome (FDX) and soybean yield. Seed treatments included a nontreated control and fluopyram in 2019. In 2020, commercial base treatment, base + fluopyram, and base + pydiflumetofen were tested. Base treatment included metalaxyl + pyraclostrobin + fluxapyroxad + clothianidin. Seed treatments were tested on susceptible and moderately resistant (MR) cultivars, which were planted at 272,277, 346,535 and 420,792 seeds/ha. Seed treatment with fluopyram or pydiflumetofen both reduced FDX and protected yield. Fluopyram reduced RR by about 10%, but RR was not different between pydiflumetofen and the base treatment in 2020. Both seed treatments reduced FDX, but reduction was greater for fluopyram (43.2%) than for pydiflumetofen (24.3%) based on 2020 results. Seeding rate had no effect on foliar symptoms, but the highest seeding rate showed increased RR in 2019, and greater yield both years. Performance of MR cultivars was inconsistent across both years. In 2019, MR cultivars reduced RR by 8.9%, however, in 2020, MR cultivar had more RR than the susceptible cultivar. Also, FDX was only reduced by the MR cultivar in 2020. Integrating seed treatment, host resistance, and adequate seeding rates helped maximize yield in fields with SDS.","PeriodicalId":20251,"journal":{"name":"Plant Health Progress","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2023-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47101864","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}

引用次数: 1

Bacteria disinfection of rice seeds by ultraviolet light irradiation in a biosafe flow cabinet 生物安全流动柜中紫外线对水稻种子的细菌消毒

IF 2.3

Plant Health Progress Pub Date : 2023-05-15 DOI: 10.1094/php-02-23-0017-rs

Yulin Jia, Q. Read

{"title":"Bacteria disinfection of rice seeds by ultraviolet light irradiation in a biosafe flow cabinet","authors":"Yulin Jia, Q. Read","doi":"10.1094/php-02-23-0017-rs","DOIUrl":"https://doi.org/10.1094/php-02-23-0017-rs","url":null,"abstract":"Easy-to-use methods to disinfect microbes on seeds are not available. In the present study, rice 30 seeds were irradiated by 274 nanometer germicidal ultraviolet proton in a biosafe flow cabinet. Seeds (10) without any barrier, in a sterilized mesh bag, or in a sterilized coin envelope were removed each day with sterilized forceps for seven days after UV irradiation and then were placed in nutrient agar media in a dark incubator at 29°C for three days, after which the number of seeds contaminated with bacteria and/or fungi were counted. At the same time, 10 seeds each time were removed from each UV treatment, and kept in a dark incubator at 40 °C for five days to determine the germination rate. Both bacterial and fungal infection rates declined significantly over time. The germination rate with an average of (90% ±7.1) did not change significantly over time. There was no significant difference among treatments for germination rate or fungal infection rate. The UV irradiation of seeds in mesh bags had the strongest effect on reducing bacterial infection rates over time, whereas the direct UV irradiation had a weaker effect on bacterial infection rates than the UV irradiation of seeds in mesh bags. We suggest that UV irradiation of seeds in mesh bags be used to reduce seed bacterial contamination.","PeriodicalId":20251,"journal":{"name":"Plant Health Progress","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2023-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48895208","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}

引用次数: 0

Integration of disease tolerance and fungicide application for management of tar spot on hybrid corn in North Central United States 美国中北部杂交玉米焦油斑病防治中抗病性与杀菌剂应用的结合

IF 2.3

Plant Health Progress Pub Date : 2023-05-10 DOI: 10.1094/php-10-22-0103-rs

T. J. Ross, M. Chilvers, A. Byrne, Damon L. Smith, B. Mueller, S. Shim, D. Telenko

{"title":"Integration of disease tolerance and fungicide application for management of tar spot on hybrid corn in North Central United States","authors":"T. J. Ross, M. Chilvers, A. Byrne, Damon L. Smith, B. Mueller, S. Shim, D. Telenko","doi":"10.1094/php-10-22-0103-rs","DOIUrl":"https://doi.org/10.1094/php-10-22-0103-rs","url":null,"abstract":"Tar spot, caused by Phyllachora maydis, is the most significant disease of corn in the north central United States. Elucidating an integrated management approach to protect grain yield is a high priority. The integration of tillage, hybrid, and fungicide application on tar spot severity, canopy greenness, and grain yield was assessed in Indiana in 2019, 2020, and 2021. A split-plot arrangement of two tillage treatments as main plots with factorial arrangement of subplots with three hybrids (tar spot susceptible and two partially resistant) and fungicide application (propiconazole +benzovindiflupyr +azoxystrobin) were evaluated. Further, a multistate study comparing two hybrids (susceptible and partially resistant) and fungicide application (propiconazole +benzovindiflupyr +azoxystrobin) was conducted in Indiana, Michigan, and Wisconsin in 2020. This research demonstrates that partially resistant hybrids with a sAUDPC of 2.5 and 3.0 had significantly less tar spot than a susceptible hybrid with a sAUDPC of 10.1 and increased canopy greenness rating of 48.1 and 51.5% which were significantly higher than the susceptible hybrid at 13.0% at maturity. Tar spot severity was further reduced and canopy greenness increased with a fungicide application in the susceptible hybrid. These results suggest that partial resistance alone may be used to manage tar spot. Yields did not differ significantly across hybrids with or without a fungicide application. However, a general trend of preserved yield potential was observed in the treatments with fungicide, indicating that knowledge of genetics and yield potential will be necessary to achieve the most benefit from partially resistant hybrids and judicious fungicide applications.","PeriodicalId":20251,"journal":{"name":"Plant Health Progress","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2023-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41973211","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}

引用次数: 0

Commercial Hard Squash Cultivars Exhibit Differences in Susceptibility to Phytophthora Crown Rot 商品硬南瓜品种对疫霉腐病的敏感性差异

IF 2.3

Plant Health Progress Pub Date : 2023-05-04 DOI: 10.1094/php-01-23-0009-rs

David E. Perla, Z. Hayden, M. Hausbeck

{"title":"Commercial Hard Squash Cultivars Exhibit Differences in Susceptibility to Phytophthora Crown Rot","authors":"David E. Perla, Z. Hayden, M. Hausbeck","doi":"10.1094/php-01-23-0009-rs","DOIUrl":"https://doi.org/10.1094/php-01-23-0009-rs","url":null,"abstract":"Crown rot and fruit rot, caused by the oomycete Phytophthora capsici, limit yield and quality of hard squash grown for processing. In a two-year field study, we compared four Butternut types (Cucurbita moschata), two Delicious varietal Hubbard types (Cucurbita maxima), and six Kabocha types (C. maxima) for crown rot resistance, and fruit characteristics relevant to processing including mesocarp soluble solids, percent dry matter, and average fruit weight in 2019 and 2020. To evaluate crown rot, plants were inoculated in replicated field trials. The C. moschata cultivars ‘Dickinson’, ‘Buckskin’, ‘New England Cheddar’, and ‘Ultra Butternut’ had significantly less plant death for both years (<15%) than other cultivars. Significantly fewer 'Thunder' plants died in 2020 (59.6%) compared to the Kabocha cultivars 'Sweet Mama' (>94.2%), 'Delica' (>92.3%), and 'Sunshine' (>90.4%) and had a lower rAUDPC value (≤22.4) in both years. In non-inoculated field trials, mature fruits were assessed for fruit characteristics. Of the resistant C. moschata cultivars, only ‘Ultra Butternut’ exhibited similar °Brix than ‘NK 580’ in both years and had comparable or greater dry matter and fruit weight. Kabocha cultivars with moderate crown rot susceptibility (i.e., ‘Thunder’) exhibited higher °Brix and dry matter and smaller fruit weight compared to ‘NK 580’ each year. Integrated management programs can be advanced by selecting cultivars with crown rot resistance. Further evaluation of desirable yield and quality characteristics of the resistant cultivars could accelerate acceptance of these cultivars by growers and processors.","PeriodicalId":20251,"journal":{"name":"Plant Health Progress","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2023-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46645307","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}

引用次数: 0

Recovery Plan for X-disease in Stonefruit Caused by Candidatus Phytoplasma pruni 候选植物原体核果x病的恢复计划

IF 2.3

Plant Health Progress Pub Date : 2023-05-01 DOI: 10.1094/php-02-23-0016-rp

S. Harper, T. Northfield, Louis R. Nottingham, T. DuPont, A. Thompson, Bernandita V. Sallato, Corina F. Serban, Madalyn K. Shires, A. Wright, Katlyn A. Catron, Adrian T. Marshall, C. Molnar, W. Cooper

{"title":"Recovery Plan for X-disease in Stonefruit Caused by Candidatus Phytoplasma pruni","authors":"S. Harper, T. Northfield, Louis R. Nottingham, T. DuPont, A. Thompson, Bernandita V. Sallato, Corina F. Serban, Madalyn K. Shires, A. Wright, Katlyn A. Catron, Adrian T. Marshall, C. Molnar, W. Cooper","doi":"10.1094/php-02-23-0016-rp","DOIUrl":"https://doi.org/10.1094/php-02-23-0016-rp","url":null,"abstract":"Stone fruits are a multi-billion-dollar industry for the U.S. and Canada, one that has repeatedly suffered significant economic losses to outbreaks of the X-disease phytoplasma (Candidatus Phytoplasma pruni) over the last century. Orchards and entire production areas have been abandoned, with corresponding losses to growers, fruit packers, and consumers. The most recent outbreak, in the U.S. Pacific Northwest, caused an estimated $65 million (USD) in lost revenue between 2015 and 2020 and is only increasing in incidence. Already present across much of the continental U.S. and Canada, the phytoplasma has a broad host range beyond stone fruit and is transmitted by at least eight leafhopper species therefore stone fruit production in any state is at significant risk. This recovery plan was produced as part of the National Plant Disease Recovery System (NPDRS) and is intended to provide a review of pathogen biology, assess the status of critical recovery components, and identify disease management research, extension, and education needs.","PeriodicalId":20251,"journal":{"name":"Plant Health Progress","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2023-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42545475","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}

引用次数: 1

First report of in vitro insensitivity to fluazinam of Clarireedia jacksonii causing dollar spot of turfgrass on New England golf courses 新英格兰高尔夫球场草坪草对杰克逊Clarireedia的氟西南不敏感的首次报道

IF 2.3

Plant Health Progress Pub Date : 2023-04-26 DOI: 10.1094/php-10-22-0113-br

Xiaojing Shi, G. Jung, H. Sang, Toshihiko Yamada

{"title":"First report of in vitro insensitivity to fluazinam of Clarireedia jacksonii causing dollar spot of turfgrass on New England golf courses","authors":"Xiaojing Shi, G. Jung, H. Sang, Toshihiko Yamada","doi":"10.1094/php-10-22-0113-br","DOIUrl":"https://doi.org/10.1094/php-10-22-0113-br","url":null,"abstract":"Dollar spot, caused by the newly renamed ascomycete fungus Clarireedia spp., contributes to the aesthetic and functional damage, and ultimate death of turfgrass. Fluazinam, a protective fungicide belonging to the 2,6-dinitroaniline chemical group has proven to be one of the most efficacious fungicide classes of managing a variety of turfgrass diseases, including dollar spot, due to its low risk for fungicide resistance as a broad-spectrum fungicide. Dollar spot isolates collected from six New England golf courses with suspicious resistance to multiple fungicide classes had shown reduced sensitivity to fluazinam using a mycelial growth inhibition assay. This is the first report of reduced sensitivity to fluazinam in dollar spot field isolates in the United States. Briefly, in-vitro sensitivity assays of a total of 22 isolates collected from 12 golf courses and UMass turf research facilities showed that reduced fluazinam sensitivity of isolates were detected on six golf courses collected since 2017, demonstrating that fungi with higher exposure to fluazinam tend to develop reduced sensitivity over time. To date, there is no reported field resistance of fluazinam in C. jacksonii. However, the findings highlight the need for ongoing monitoring of in vitro and field sensitivity to fluazinam in C. jacksonii, as well as emphasizing judicious use of fluazinam in managing dollar spot disease to delay the development of fungicide resistance.","PeriodicalId":20251,"journal":{"name":"Plant Health Progress","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2023-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47953175","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}

引用次数: 0

Effect of Copper Sulfate Pentahydrate and Cultivar Resistance on Reducing Bacterial Leaf Streak in Hard Red Spring Wheat in North Dakota 五水硫酸铜和品种抗性对北达科他州硬红春小麦减少细菌性叶斑的影响

IF 2.3

Plant Health Progress Pub Date : 2023-04-25 DOI: 10.1094/php-02-23-0018-rs

LeAnn Lux, Jessica M. Halvorson, Bryan Hansen, Scott M. Meyer, G. Shi, Zhaohui Liu, A. Friskop

{"title":"Effect of Copper Sulfate Pentahydrate and Cultivar Resistance on Reducing Bacterial Leaf Streak in Hard Red Spring Wheat in North Dakota","authors":"LeAnn Lux, Jessica M. Halvorson, Bryan Hansen, Scott M. Meyer, G. Shi, Zhaohui Liu, A. Friskop","doi":"10.1094/php-02-23-0018-rs","DOIUrl":"https://doi.org/10.1094/php-02-23-0018-rs","url":null,"abstract":"Bacterial leaf streak (BLS) is one of the most significant foliar diseases affecting hard red spring wheat (HRSW) production in North Dakota (ND). The most effective management tool for BLS is the use of host resistance; however, adoption and availability of resistant cultivars is limited for HRSW producers. This has led to questions pertaining to the use of copper-based products to suppress BLS severity in HRSW production. Four field experiments were conducted from 2020 to 2022 in ND to evaluate the efficacy of copper sulfate pentahydrate (CSP) applied at the flag leaf stage on reducing BLS severity and protecting HRSW yield and test weight. Experiments were conducted in a randomized complete block design with a split-plot arrangement with four replications. Three treatments served as the main plots (non-inoculated, inoculated, and inoculated + CSP applied at flag leaf). Five HRSW cultivars varying in host resistance served as sub-plots. A high level of disease occurred across all experiments. A combined analysis suggested the use of CSP did not provide adequate BLS suppression and did not protect HRSW yield or test weight regardless of HRSW susceptibility. The lowest mean yield loss was associated with the moderately resistant cultivar Boost (9%) and the highest was associated with the susceptible cultivar SY Rockford (19%). Variability in yield loss values amongst cultivars suggests more research is needed to strengthen our understanding of BLS in HRSW.","PeriodicalId":20251,"journal":{"name":"Plant Health Progress","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2023-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47409071","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}

引用次数: 0

Recombinase polymerase amplification did not detect Xylella fastidiosa subsp. multiplex in peach seeds from phony peach disease trees 重组酶聚合酶扩增未检测到苛养木杆菌亚种。在假桃病树的桃种子中多重作用

IF 2.3

Plant Health Progress Pub Date : 2023-04-15 DOI: 10.1094/php-11-22-0121-br

K. A. Johnson, Chunxian Chen, C. Bock, P. Brannen

{"title":"Recombinase polymerase amplification did not detect Xylella fastidiosa subsp. multiplex in peach seeds from phony peach disease trees","authors":"K. A. Johnson, Chunxian Chen, C. Bock, P. Brannen","doi":"10.1094/php-11-22-0121-br","DOIUrl":"https://doi.org/10.1094/php-11-22-0121-br","url":null,"abstract":"Phony peach disease (PPD), caused by Xylella fastidiosa (Xf) subspecies multiplex (Xfm), is an important disease of peach in the southeastern United States. Seed transmission of Xf has not been reported for PPD, and research published in 1933 indicated seedlings grown from seeds of PPD trees did not develop the disease. Recombinase polymerase amplification (RPA) is a relatively new and rapid molecular detection process that has been commercialized as AmplifyRP® XRT + for Xf. We utilized this test to determine whether the Xf bacterium could be detected in peach seeds collected from PPD-infected trees. Initially, 25 seeds and 25 excised embryos were individually tested for Xf using qPCR, and Xf was not detected. In a more extensive study, 300 individual seeds were tested for Xf using RPA, and all seed were again negative for Xf. Our studies provide no new evidence to support vertical transmission of Xf from Xf-infected peach trees to peach seeds. However, prior to concluding that vertical transmission does not occur, additional studies to observe and test seedlings produced from seed collected from PPD trees should be conducted.","PeriodicalId":20251,"journal":{"name":"Plant Health Progress","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2023-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44613998","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}

引用次数: 0

Occurrence and Distribution of Common Diseases and Pests of US Cannabis: A Survey 美国大麻常见病虫害的发生和分布:调查

IF 2.3

Plant Health Progress Pub Date : 2023-04-12 DOI: 10.1094/php-01-23-0004-s

M. Munir, Kimberly Leonberger, K. Kesheimer, Marguerite Bolt, Marion E. Zuefle, E. Aronson, Magdalena Ricciardi, Craig M. Schluttenhofer, D. Joly, Henry S. Smith, Jacqueline Coburn, Jose Franco Da Cunha Leme Filho, S. Rondon, C. Smart, A. Collins, A. Garfinkel, N. Gauthier

{"title":"Occurrence and Distribution of Common Diseases and Pests of US Cannabis: A Survey","authors":"M. Munir, Kimberly Leonberger, K. Kesheimer, Marguerite Bolt, Marion E. Zuefle, E. Aronson, Magdalena Ricciardi, Craig M. Schluttenhofer, D. Joly, Henry S. Smith, Jacqueline Coburn, Jose Franco Da Cunha Leme Filho, S. Rondon, C. Smart, A. Collins, A. Garfinkel, N. Gauthier","doi":"10.1094/php-01-23-0004-s","DOIUrl":"https://doi.org/10.1094/php-01-23-0004-s","url":null,"abstract":"Hemp and marijuana, both Cannabis sativa L., are revitalized crops to U.S. agricultural and horticultural industries. Hemp (Δ⁹-Tetrahydrocannabinol content <0.3%) was reintroduced in 2014 under a pilot research program and legalized in 2018. Hemp can now be grown in all 50 states. Marijuana (Δ⁹-THC content > 0.3%), though classified as a Schedule I narcotic by the U.S. Drug Enforcement Administration (DEA), is legal in 40 states and the District of Columbia for medical and/or recreational use. Although C. sativa is often promoted as a pest-free crop, multiple diseases and arthropod pests have been identified and confirmed in recent years. There are limited options for control of diseases and pests affecting hemp. A survey of diagnosticians, researchers, and industry leaders conducted in 2021-22 sought to determine the distribution and occurrence of 76 common diseases and pests on C. sativa across the U.S. A total of 148 responses were collected and grouped by U.S. region: Western, Great Plains, North Central, Northeastern, and Southern. Survey results suggest that while some pathogens and pests are widely distributed across the U.S., others occur more frequently in specific regions. This finding may indicate variations in economic importance by region. Results from this survey provide a foundation for regional and national prioritization of research and regulatory activities.","PeriodicalId":20251,"journal":{"name":"Plant Health Progress","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2023-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"61308787","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}

引用次数: 1

Effect of different rates, application timing, and combination of non-fumigant nematicides in control of Meloidogyne incognita in watermelon in plasticulture 不同用量、施用时间及非熏蒸杀线虫剂组合对西瓜根结线虫的控制效果

IF 2.3

Plant Health Progress Pub Date : 2023-04-11 DOI: 10.1094/php-01-23-0005-rs

{"title":"Effect of different rates, application timing, and combination of non-fumigant nematicides in control of Meloidogyne incognita in watermelon in plasticulture","authors":"","doi":"10.1094/php-01-23-0005-rs","DOIUrl":"https://doi.org/10.1094/php-01-23-0005-rs","url":null,"abstract":"The use of plasticulture systems, which consist of raised beds, plastic mulch, and drip irrigation for watermelon production, has increased in the Southern United States in recent decades. The root-knot nematode (RKN), Meloidogyne incognita, is a significant pathogen of watermelon production in plasticulture systems and can cause varying levels of yield loss depending on the nematode population density if not properly controlled. Few new non-fumigant nematicides (fluensulfone, fluazaindolizine, and fluopyram) have emerged in the last decade to help manage RKNs. A two-year field study was conducted to examine the impact of different rates, application timing (i.e., days before transplanting [DBT], at transplanting [AT], and days after transplanting [DAT]), and combination of these new nematicides and an older one (oxamyl) in control of RKN in watermelon cv. ‘Fascination’. The nematicide treatments, except for a single-time application of oxamyl in 2019 and 2020, significantly reduced root galling compared to the untreated check. Similarly, all treatments, except a single application of oxamyl in 2020, resulted in a lower soil population level of M. incognita than the untreated check. All nematicide treatments, except a single application of fluensulfone and a two-time application of fluopyram at a half-recommended rate, increased fruit yields when compared to the untreated check. Overall, the drip application of new chemistries, known as 3-F nematicides, shows to be a useful option for RKN management in watermelon. At planting application of fluazaindolizine or fluopyram and two-time applications of oxamyl based on the manufacturer's recommended rate show potential to prevent the crop loss.","PeriodicalId":20251,"journal":{"name":"Plant Health Progress","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2023-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47925608","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}

引用次数: 0