Plant Health Progress最新文献_第2页

Isolates of Corynespora cassiicola, Causal Agent of Target Spot of Soybean, in Kentucky Contain the G143A Mutation Conferring Resistance to Quinone Outside Inhibitor Fungicides 肯塔基州大豆靶斑病原菌 Corynespora cassiicola 的分离株含有 G143A 突变，对醌外抑制剂杀菌剂产生抗性

IF 2.3

Plant Health Progress Pub Date : 2024-05-16 DOI: 10.1094/php-12-23-0108-br

D. Neves, Carl A. Bradley

引用次数: 0

Effect of Stenocarpella maydis and Stenocarpella macrospora inoculation timing on Diplodia ear rot of corn Stenocarpella maydis 和 Stenocarpella macrospora 的接种时间对玉米 Diplodia 穗腐病的影响

IF 2.3

Plant Health Progress Pub Date : 2024-05-15 DOI: 10.1094/php-01-24-0008-rs

Nolan Anderson, Kiersten A. Wise

{"title":"Effect of Stenocarpella maydis and Stenocarpella macrospora inoculation timing on Diplodia ear rot of corn","authors":"Nolan Anderson, Kiersten A. Wise","doi":"10.1094/php-01-24-0008-rs","DOIUrl":"https://doi.org/10.1094/php-01-24-0008-rs","url":null,"abstract":"Stenocarpella maydis (Berk.) Sutton and Stenocarpella macrospora (Earle) Sutton are both causal agents of Diplodia ear rot (DER) of corn in the United States, however DER caused by S. macrospora has not been as well studied as S. maydis in trials examining disease development. Field experiments were established from 2019 to 2021 in Kentucky to examine the effect of inoculation timing at one of four growth stages (eight leaf collar (V8), silking (R1), blister (R2), milk (R3)) of each pathogen on DER severity, yield and test weight. Experiments were conducted under dryland and irrigated conditions in 2019 and 2020, and under irrigated conditions in 2021. Treatments inoculated by either pathogen at silking (R1) resulted in higher DER than treatments where inoculation occurred at milk stage (R3) in all years. Yield was reduced in treatments inoculated at R1 compared to the non-inoculated treatment in all trials and years, except the irrigated trial in 2019. A negative relationship was found between DER severity and corn yield and test weight: As DER severity increased, subsequent yield and test weight of corn decreased. This research indicates that an R1 inoculation timing of both Stenocarpella pathogens can negatively impact yield and grain quality.","PeriodicalId":20251,"journal":{"name":"Plant Health Progress","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2024-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140972397","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

Susceptibility of Zucchini Cultivars to Powdery Mildew (Podosphaera xanthii) under High and Low Nitrogen Regimes 高氮和低氮条件下西葫芦品种对白粉病（Podosphaera xanthii）的敏感性

IF 2.3

Plant Health Progress Pub Date : 2024-05-07 DOI: 10.1094/php-12-23-0105-rs

Rachel E. Rudolph, E. Dixon, Misbakhul Munir, Kimberly Leonberger, Kathryn Pettigrew, Martin Polo, Henry S. Smith, N. W. Gauthier

{"title":"Susceptibility of Zucchini Cultivars to Powdery Mildew (Podosphaera xanthii) under High and Low Nitrogen Regimes","authors":"Rachel E. Rudolph, E. Dixon, Misbakhul Munir, Kimberly Leonberger, Kathryn Pettigrew, Martin Polo, Henry S. Smith, N. W. Gauthier","doi":"10.1094/php-12-23-0105-rs","DOIUrl":"https://doi.org/10.1094/php-12-23-0105-rs","url":null,"abstract":"Powdery mildew, primarily caused by Podosphaera xanthii, threatens cucurbit crop yield and longevity. Fungicides and resistant cultivars cannot fully manage or prevent the disease. Previous work has shown that powdery mildew incidence and severity can increase under high soil nitrogen. This study was conducted in Kentucky to determine disease severity and yield using a split plot design with nitrogen fertility (high: 140 kg/ha, low: 84 kg/ha) and zucchini cultivar (Cash Machine, Cue Ball, Desert, Dunja, Eight Ball, Emerald Delight, Golden Glory, Mexicana, and Spineless Perfection) as the main plot and subplot factors, respectively. In year one, powdery mildew severity was significantly higher in high soil nitrogen and varied significantly among cultivars. Yield was significantly lower in high soil nitrogen. Significant differences in fruit count, but not fruit weight, were observed among the cultivars. In year two, nitrogen did not significantly affect disease severity, but fruit weight and count were significantly lower in the high soil nitrogen treatment. ‘Golden Glory’ had significantly higher powdery mildew severity while ‘Mexicana’ and ‘Eight Ball’ had significantly lower severity compared to all other cultivars. Spineless Perfection had the highest fruit weight and was significantly higher than all other cultivars except for Cue Ball and Eight Ball. ‘Golden Glory’ had the highest fruit count and was significantly higher than all others except for ‘Dunja’. Nitrogen did not consistently affect disease severity throughout the study. The effects of powdery mildew on yield should be explored further, as heavily diseased plants did not always have low yield.","PeriodicalId":20251,"journal":{"name":"Plant Health Progress","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2024-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141004107","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

Assessment of the Distribution of Dagger Nematodes and Associated Nematode Transmitted Viruses in Pacific Northwest Small Fruit Crops 评估西北太平洋小型水果作物中匕首线虫和相关线虫传播病毒的分布情况

IF 2.3

Plant Health Progress Pub Date : 2024-05-02 DOI: 10.1094/php-04-24-0034-rs

Cristian Olaya, Lauri Reinhold, McKenna Platt, A. Peetz, Kelly Donahue, I. Zasada

{"title":"Assessment of the Distribution of Dagger Nematodes and Associated Nematode Transmitted Viruses in Pacific Northwest Small Fruit Crops","authors":"Cristian Olaya, Lauri Reinhold, McKenna Platt, A. Peetz, Kelly Donahue, I. Zasada","doi":"10.1094/php-04-24-0034-rs","DOIUrl":"https://doi.org/10.1094/php-04-24-0034-rs","url":null,"abstract":"Small fruit production is an important component of the agricultural sector in the Pacific Northwest of the United States (Oregon and Washington). A diversity of small fruits is produced in the region including wine grape, blueberry, strawberry, and caneberry (red raspberry, black raspberry, and blackberry). Plant-parasitic nematodes and viruses both impact the production of small fruits in the region; there is not an up-to-date understanding of the distribution of potential virus-vectoring dagger nematodes (Xiphinema spp.) and associated nematode-transmitted viruses. Soil and leaf samples were collected from 43 wine grape vineyards and 24 blueberry, 23 caneberry, 5 strawberry and one currant field (s) in 2021 and 2023. The samples were analyzed to determine the presence of dagger nematodes and the nepoviruses tomato ringspot virus (ToRSV) and tobacco ringspot virus (TRSV). Dagger nematodes were found in 52% of the fields. ToRSV was detected in two blueberry fields in Washington, while in Oregon ToRSV was detected in one field each of blueberry, red raspberry, currant, and wine grape. TRSV was not conclusively found in any of the surveyed samples. To the best of our knowledge, this is the first time ToRSV is reported in wine grapes in Oregon and in the red currant species, Ribes spicatum. This study provides an up-to-date assessment of the distribution of dagger nematodes and nepoviruses associated with small fruits in the Pacific Northwest.","PeriodicalId":20251,"journal":{"name":"Plant Health Progress","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2024-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141018287","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

The Influence of Sprinkler and Drip Irrigation on the Incidence and Severity of Bacterial Disease in Onions Grown in Northeast California 喷灌和滴灌对加利福尼亚东北部种植的洋葱细菌性病害的发生率和严重程度的影响

IF 2.3

Plant Health Progress Pub Date : 2024-04-17 DOI: 10.1094/php-01-24-0002-rs

Rob G. Wilson, Brenna J. Aegerter, Gabe LaHue

{"title":"The Influence of Sprinkler and Drip Irrigation on the Incidence and Severity of Bacterial Disease in Onions Grown in Northeast California","authors":"Rob G. Wilson, Brenna J. Aegerter, Gabe LaHue","doi":"10.1094/php-01-24-0002-rs","DOIUrl":"https://doi.org/10.1094/php-01-24-0002-rs","url":null,"abstract":"Overhead sprinkler irrigation and its effect on leaf wetness is often referenced as a key factor for bacterial disease spread in onions grown in arid climates. A study was conducted in 2021 and 2022 in Tulelake, CA to compare the incidence and severity of bacterial disease under sprinkler and drip irrigation. The experiment was a split-plot randomized complete block design with drip and solid-set sprinkler as the main plot treatments and inoculated and non-inoculated with plant pathogenic bacteria as the split-plot treatments. The entire study area was irrigated with solid-set sprinklers from planting until the five-leaf stage to facilitate uniform onion germination and chemigation of herbicides for weed control. After the five-leaf stage, irrigation treatments were imposed for the remainder of the growing season. Total irrigation water amount and irrigation frequency were similar for both irrigation methods. Foliar disease severity and the incidence of bulb rot were 170% and 186% higher, respectively, for solid-set sprinkler compared to drip. Leaf wetness within the plant canopy during onion bulbing was on average 36% higher in solid-set sprinkler compared to drip while relative humidity and temperature were similar between irrigation methods. Drip maintained lower soil water tension and increased average bulb size by 9% compared to solid-set sprinkler. This study confirms historic observations that overhead irrigation can extend leaf wetness and increase bacterial disease in onions in arid production areas, and highlights the potential benefits associated with the adoption of drip irrigation.","PeriodicalId":20251,"journal":{"name":"Plant Health Progress","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2024-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140690441","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

Turf-Type Tall Fescue Brown Patch Resistance as Influenced by Morphological Characteristics 草坪型高羊茅褐斑病抗性受形态特征的影响

IF 2.3

Plant Health Progress Pub Date : 2024-04-17 DOI: 10.1094/php-10-23-0082-rs

Jada S. Powlen, M. Fidanza, J. Kerns, Lori A. Hoagland, C. Bigelow

{"title":"Turf-Type Tall Fescue Brown Patch Resistance as Influenced by Morphological Characteristics","authors":"Jada S. Powlen, M. Fidanza, J. Kerns, Lori A. Hoagland, C. Bigelow","doi":"10.1094/php-10-23-0082-rs","DOIUrl":"https://doi.org/10.1094/php-10-23-0082-rs","url":null,"abstract":"Brown patch (caused by multiple species of Rhizoctonia and Rhizoctonia-like fungi) is one of the major turfgrass diseases impacting turf-type tall fescue [ Schedonorus arundinaceus (Schreb.) Dumort., nom. cons.] lawns during the summer season. Selection of tall fescue cultivars with brown patch resistance is an important cultural management practice to reduce disease severity and limit reliance on fungicides. A greenhouse experiment was conducted to quantify differences in brown patch resistance among 15 tall fescue cultivars and correlate disease resistance with plant morphological characteristics. Prior to R. solani inoculation, leaf blade width, sheath width and length, endophyte stem infection, and relative growth rate were measured. Disease resistance was determined as a percentage of the canopy blighted as measured using digital image techniques. Brown patch severity after 21 days in Experiments 1 and 2 ranged from 36.7 to 72.7% and 20.8 to 41.8%, respectively, among all cultivars. There were significant differences among morphological characteristics for the cultivars. Increased brown patch was associated with cultivars with a faster growth rate, wider sheath width, and decreased sheath length. This study demonstrates the importance of cultivar selection for reducing brown patch severity in tall fescue lawns. Additionally, tall fescue cultivars with higher shoot density and narrow leaves should not be avoided due to concerns of increased brown patch susceptibility.","PeriodicalId":20251,"journal":{"name":"Plant Health Progress","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2024-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140694644","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

Diagnostic Guide for Sclerotial Blight and Circular Spot of Sweetpotato 甘薯硬斑病和圆斑病诊断指南

IF 2.3

Plant Health Progress Pub Date : 2024-04-16 DOI: 10.1094/php-12-23-0110-dg

Jack Mascarenhas, Lina Quesada-Ocampo

引用次数: 0

Evaluation of a novel fungicidal extract from blue spruce, Picea pungens 评估从蓝云杉（Picea pungens）中提取的新型杀菌提取物

IF 2.3

Plant Health Progress Pub Date : 2024-04-12 DOI: 10.1094/php-10-23-0089-rs

Yonghong Guo, Bin Zhou, Margaret Pooler

引用次数: 0

Occurrence of Stemphylium leaf spot caused by Stemphylium vesicarium in commercial celery production following an onion rotation 在洋葱轮作后的商品芹菜生产中出现由 Stemphylium vesicarium 引起的 Stemphylium 叶斑病

IF 2.3

Plant Health Progress Pub Date : 2024-04-02 DOI: 10.1094/php-07-23-0067-rs

Abdelrazek S. Abdelrhim, Douglas S. Higgins, M. Hausbeck

{"title":"Occurrence of Stemphylium leaf spot caused by Stemphylium vesicarium in commercial celery production following an onion rotation","authors":"Abdelrazek S. Abdelrhim, Douglas S. Higgins, M. Hausbeck","doi":"10.1094/php-07-23-0067-rs","DOIUrl":"https://doi.org/10.1094/php-07-23-0067-rs","url":null,"abstract":"In 2022, lesions were observed on the lower leaves of ‘Fandango’ celery (Apium graveolens L) growing in a commercial field located in Hamilton, MI. Brown spots were observed on the leaves’ adaxial surface and border extending to the petiole. Conidia were observed on the symptomatic tissue and 25 fungal isolates, morphologically similar to S. vesicarium, were obtained. DNA was extracted from three isolates and two primer sets were used to amplify and sequence the internal transcribed spacer (ITS) region and partial calmodulin (cmdA) and glyceraldehyde-3-phosphate dehydrogenase (gapdh) genes. The obtained sequences of the three isolates had 100% pairwise identity with S. vesicarium sequences MW798751 (ITS), MK675706 (cmdA) and OQ925923 (gapdh). A multilocus phylogenetic analysis (neighbor-joining tree) strongly supported clustering Michigan isolates into a single clade with S. vesicarium reference sequences. Isolates recovered from celery were pathogenic to ‘CR1’, ‘Tall Utah’ and ‘Challenger’ celery and ‘Bradley’ onion. S. vesicarium isolates isolated from symptomatic onion volunteers were pathogenic to the three celery cultivars. To our knowledge, this is the first report of Stemphylium vesicarium as a pathogen on celery causing leaf spot, and volunteer onion may be a source of Stemphylium in celery fields.","PeriodicalId":20251,"journal":{"name":"Plant Health Progress","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2024-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140753203","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

Incidence and Distribution of the Fusarium Sambucinum Species Complex associated with Cannabis sativa in Kentucky 肯塔基州与大麻相关的镰刀菌 Sambucinum 种群的发生率和分布情况

IF 2.3

Plant Health Progress Pub Date : 2024-03-29 DOI: 10.1094/php-12-23-0106-s

Henry S. Smith, E. Dixon, Misbakhul Munir, N. W. Gauthier

引用次数: 0