International Turfgrass Society Research Journal最新文献_第4页

Effects of spray droplet size on pronamide control of Poa annua 喷雾液滴大小对早熟禾丙酰胺防治效果的影响

International Turfgrass Society Research Journal Pub Date : 2022-03-30 DOI: 10.1002/its2.129

Martin Ignes, Te-Ming P. Tseng, Edicarlos de Castro, Amy L. Wilber, James D. McCurdy

{"title":"Effects of spray droplet size on pronamide control of Poa annua","authors":"Martin Ignes, Te-Ming P. Tseng, Edicarlos de Castro, Amy L. Wilber, James D. McCurdy","doi":"10.1002/its2.129","DOIUrl":"https://doi.org/10.1002/its2.129","url":null,"abstract":"Annual bluegrass (Poa annua L.) is a problematic weed in turfgrass that has evolved resistance to 12 different herbicide sites of action. The mitotic inhibiting herbicide pronamide has both pre- and postemergence activity on susceptible annual bluegrass populations, but on certain resistant populations, postemergence activity is hypothetically compromised due to lack of root uptake or due to an unknown foliar resistance mechanism. Spray droplet size may affect foliar and soil deposition of pronamide, thus potentially explaining variation in population control or differential shoot and root uptake. Greenhouse experiments were conducted to quantify pronamide, flazasulfuron, and pronamide + flazasulfuron (a common tank mixture) deposition on annual bluegrass as affected by spray-droplet size. Five droplet sizes (200, 400, 600, 800, and 1,000 μm) were sprayed in an enclosed spray chamber on two- to three-leaf stage annual bluegrass plants. Fluorescent dye was added to each treatment solution to quantify the effects of herbicide and spray droplet size on herbicide deposition. Results indicate that spray droplet size affects deposition of pronamide and flazasulfuron, applied alone and in combination, on annual bluegrass. The highest foliar deposition was produced with 400-μm spray droplets in pronamide treatments and with 200 μm spray droplets in flazasulfuron and pronamide + flazasulfuron treatments. The addition of flazasulfuron to pronamide did not affect herbicide deposition when compared with pronamide-alone treatments. Results suggest that 200- to 400-μm spray droplets are optimal for foliar deposition of pronamide. Alternatively, larger droplet sizes may facilitate better soil deposition of pronamide where root uptake is optimal.","PeriodicalId":100722,"journal":{"name":"International Turfgrass Society Research Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/its2.129","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72169489","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effects of Spray Droplet Size on Pronamide Control of Poa annua 喷雾雾滴大小对丙烯酰胺防治黄斑病的影响

International Turfgrass Society Research Journal Pub Date : 2022-03-30 DOI: 10.1002/its2.129

Martin Ignes, T. Tseng, E. Castro, Amy L. Wilber, J. McCurdy

引用次数: 0

Domesticating native grasses in New Zealand 在新西兰驯化原生草

International Turfgrass Society Research Journal Pub Date : 2022-03-25 DOI: 10.1002/its2.130

A. Stewart

引用次数: 0

Domesticating native grasses in New Zealand 在新西兰驯化本地草

International Turfgrass Society Research Journal Pub Date : 2022-03-25 DOI: 10.1002/its2.130

Alan V. Stewart

{"title":"Domesticating native grasses in New Zealand","authors":"Alan V. Stewart","doi":"10.1002/its2.130","DOIUrl":"https://doi.org/10.1002/its2.130","url":null,"abstract":"New Zealand produces no commercial seed of any native grass species. All grasses used in agriculture and turf have evolved on other continents, and most natives fail to compete in mown turf or grazed pasture. Is this simply because of a lack of research or the lack of native grazing animals, or is there something fundamentally different about the New Zealand flora? New Zealand has many indigenous species within genera containing known turf species such as Festuca, Poa, Agrostis, Deschampsia, and Zoysia, but most are rare in the modern landscape. After collecting and screening over 50 native species for potential use in turf or pasture, it was apparent that most lacked vigor; were unable to form a turf; had slow establishment, extended flowering periods, poor seed yields, seeds with long awns, or seed that shattered readily; or had other difficulties with harvesting. One of the native grasses that showed promise was Poa imbecilla Spreng., which formed a very fine turf and had seed production characteristics suitable for development as a commercial species. It established readily but was usually dominated by introduced species within a few years. A cultivar was developed from local material, ‘Stewarts’, which is suitable for fine turf and for native grass revegetation and is now in limited commercial production.","PeriodicalId":100722,"journal":{"name":"International Turfgrass Society Research Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/its2.130","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72191874","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

An Improved User Interface to Identify Sustainable Turfgrasses within National Turfgrass Evaluation Program Data 一种改进的用户界面，用于在国家草坪评估计划数据中识别可持续草坪

International Turfgrass Society Research Journal Pub Date : 2022-03-17 DOI: 10.1002/its2.127

Kevin N. Morris, Len Kne, Steve Graham, Yuanshuo Qu

引用次数: 0

An Improved User Interface to Identify Sustainable Turfgrasses within National Turfgrass Evaluation Program Data 在国家草坪草评估项目数据中识别可持续草坪草的改进用户界面

International Turfgrass Society Research Journal Pub Date : 2022-03-17 DOI: 10.1002/its2.127

K. Morris, L. Kne, Steve Graham, Yuanshuo Qu

引用次数: 0

Fall establishment of zoysiagrass on roadsides in the U.S. transition zone 秋季在美国过渡区路边建立结缕草

International Turfgrass Society Research Journal Pub Date : 2022-03-17 DOI: 10.1002/its2.128

Grady Miller, Ben Gragg, Drew Pinnix, Ray McCauley, Susana Milla-Lewis

{"title":"Fall establishment of zoysiagrass on roadsides in the U.S. transition zone","authors":"Grady Miller, Ben Gragg, Drew Pinnix, Ray McCauley, Susana Milla-Lewis","doi":"10.1002/its2.128","DOIUrl":"https://doi.org/10.1002/its2.128","url":null,"abstract":"Vegetation management around roadsides and guardrails is time-consuming and expensive for a department of transportation. These organizations desire dense vegetation that has slow vertical growth and minimal weed invasion once established, and zoysiagrass (Zoysia spp.) is a suitable species for this use. The objective of this study was to compare fall versus spring plantings for establishing zoysiagrass on North Carolina roadsides. ‘Crowne’ (sprigs) and ‘Compadre’ (sprigs and seed) zoysiagrasses (Zoysia japonica Steud.) were planted in fall 2017 (September, October, November) and spring 2018 (March, April, May) in Lenoir and Yadkin Counties, NC. Data collection was initiated in summer of 2018 and continued through July 2019. The mean percentage of zoysiagrass cover was recorded individually for each establishment timing and method. Zoysiagrass planted with seed achieved coverage quicker than sprigging for all monthly plantings. In Yadkin, March and May seedings achieved 95 and 98% coverage in September 2018, respectively; whereas Compadre's sprigging coverage was 67%. In Lenoir, seed planted in November 2017 and March 2018 achieved 32 and 35% cover by September 2018, respectively, whereas sprig plantings showed <6% coverage. Coverage was faster for spring-planted materials, but after one calendar year, fall and spring seed planting had similar coverage. The results from this research suggest that zoysiagrass can be established with minimal inputs in fall as well as spring on North Carolina roadsides.","PeriodicalId":100722,"journal":{"name":"International Turfgrass Society Research Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/its2.128","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72155510","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

An investigation into the principle modes of action of surfactants and how a novel formulation may improve turfgrass quality by increasing the dominance of agrostis spp . in golf greens 研究表面活性剂的主要作用方式，以及一种新配方如何通过增加草锈菌的优势来改善草坪草的质量。在高尔夫球场

International Turfgrass Society Research Journal Pub Date : 2022-03-17 DOI: 10.1002/its2.126

T. Martin, Dr Shane Rothwell, C. Stevens

引用次数: 0

Fall establishment of zoysiagrass ( Z. japonica ) on roadsides in the US transition zone 结缕草(Z. japonica)在美国过渡区路边的秋季建立

International Turfgrass Society Research Journal Pub Date : 2022-03-17 DOI: 10.1002/its2.128

G. Miller, Ben Gragg, Drew Pinnix, Raymond K. McCauley, S. Milla‐Lewis

引用次数: 0

An investigation into the principal modes of action of surfactants and how a novel formulation may improve turfgrass quality by increasing the dominance of Agrostis spp. in golf greens 表面活性剂的主要作用模式以及一种新的制剂如何通过提高Agrostis spp.在高尔夫果岭中的优势来改善草坪草的质量的研究

International Turfgrass Society Research Journal Pub Date : 2022-03-17 DOI: 10.1002/its2.126

Thomas Martin, Shane Rothwell, Carly Stevens

{"title":"An investigation into the principal modes of action of surfactants and how a novel formulation may improve turfgrass quality by increasing the dominance of Agrostis spp. in golf greens","authors":"Thomas Martin, Shane Rothwell, Carly Stevens","doi":"10.1002/its2.126","DOIUrl":"https://doi.org/10.1002/its2.126","url":null,"abstract":"The aim of this study was to establish the mechanisms underpinning the observations made in a field trial that suggested that a novel surfactant treatment could promote bentgrasses (Agrostis spp.) in golf greens that contain annual meadow grass (Poa annua L.). Assessments of the effects of three surfactant treatments (named Treatments 1, 2, and 3) on shoot height, biomass accumulation, rhizosheath properties, soil water distribution, and rooting characteristics were made over the course of two experiments carried out under controlled conditions. We found that the leaf extension rate was significantly affected in the two grass species to different extents, depending on the surfactant used. This finding could have positive implications for turf quality in the field for a newly developed formulation (Treatment 3), which was observed to be the case in the field trial that pre-dated this study. The same treatment also resulted in significant differences in the grasses in terms of rhizosheath size compared with untreated soil. We found that surfactants affected the distribution of water in the soil by increasing the rhizosheath water content to bulk soil water content ratio, potentially maximizing water and nutrient uptake by the roots. The combination of effects observed with use of the novel surfactant treatment may lead to improved water use efficiency and a more desirable sward composition for golf greens.","PeriodicalId":100722,"journal":{"name":"International Turfgrass Society Research Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/its2.126","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72155511","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0