Download or read book An Investigation Into the Effect of Seasonal Root Replacement Upon Plant Longevity in Perennial Ryegrass Lolium Perenne Italian Ryegrass L Multiflorum Tall Fescue Festuca Arundinacea and Annual Meadow Grass Poa Annua written by R. H. Schwass and published by . This book was released on 1955 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Competitiveness of Perennial Ryegrass Lolium Perenne L and Its Ability to Withstand the Invasion of Annual Bluegrass Poa Annua L microform written by Daniels, Robert Wesley and published by Ann Arbor, Mich. : University Microfilms International. This book was released on 1989 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Management and Uses of Annual Ryegrass lolium Multiflorum in California written by United States. Soil Conservation Service and published by . This book was released on 1973 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Study of Seasonal Root and Tiller Dynamics in Swards of Perennial Ryegrass Lolium Perenne L written by Cory Matthew and published by . This book was released on 1992 with total page 494 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Cellular Effects in Perennial Ryegrass Lolium Perenne L Associated with the Root Inhibiting Compound Alaninyl alanine written by Joseph Bryan Unruh and published by . This book was released on 1995 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Forage Plant Ecophysiology written by Cory Matthew and published by MDPI. This book was released on 2018-03-16 with total page 221 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a printed edition of the Special Issue "Forage Plant Ecophysiology" that was published in Agriculture
Download or read book Evaluating Commercial Cultivars and Farm collected Biotypes of Italian Ryegrass lolium Perenne L Ssp Multiflorum lam Husnot for Potential Herbicide Resistance in Georgia written by Danielle Burke Simmons and published by . This book was released on 2017 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt: Italian ryegrass [Lolium perenne ssp. multiflorum (Lam.) Husnot] is known for being the most troublesome weed in small grains in Georgia. This Lolium species is also a highly recommended cool-season forage that becomes problematic when total control is never achieved in warm-season bermudagrass or tall-fescue hayfields. Concerns about the lack of control in Italian ryegrass require Georgia populations be evaluated. Therefore, the response of Italian ryegrass populations to small grain herbicides was assessed. Greenhouse experiments from 2015 to 2017 indicate that post-emergence use herbicides lack control of some Georgia commercialized Italian ryegrass cultivars and farm-collected biotypes. A continuation of these experiments within the field setting are needed to determine if the responses can be replicated, and further analyses on other ryegrass populations should be conducted to determine if these trends are developing in experimental seed lots and currently available populations.
Download or read book Agrobacterium mediated Transformation of Perennial Ryegrass Lolium Perenne L for Cold Tolerance written by Carmille Joanna C. Bales and published by . This book was released on 2010 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Perennial Ryegrass Lolium Perenne L Cultivar Response to a Postemergence Application of Mesotrione written by Barbara J. Hinds-Cook and published by . This book was released on 2017 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt: Perennial ryegrass (Lolium perenne L.) is a widely grown cool season, bunch type, short lived perennial grass that is native to Europe, Asia, and North Africa, but has been adapted globally. Perennial ryegrass is quick to establish, has a long growing season, and produces high seed yield and forage or turf quality (high density, fine leaves, and dark green color). Mesotrione is a selective 4-hydroxyphyenyl pyruvate dioxygenase (HPPD) inhibiting herbicide used for weed control in perennial ryegrass seed production and turfgrass in the USA. HPPD inhibiting herbicides cause a reduction in carotenoids which protect chlorophyll from high energy light. The photodegradation of chlorophyll results in a bleaching of leaf tissue in susceptible plants. In seed production, mesotrione, commercialized in the USA as Callisto®, is applied postemergence in the spring to fall planted perennial ryegrass seed crops. Mesotrione for use in turfgrass, commercialized in the USA as Tenacity®, is applied pre or postemergence. The effects of a postemergence application of mesotrione on chlorophyll concentration, dry biomass, plant height, and seed yield and germination compared to an application of another HPPD inhibitor, pyrasulfotole-bromoxynil, on perennial ryegrass cultivars were evaluated. There were differences in perennial ryegrass cultivar response to a postemergence application of both HPPD inhibitors in chlorophyll concentration and to a postemergence application of pyrasulfotole-bromoxynil in dry biomass. No reduction in plant height was caused by the HPPD inhibitors. Seed yield of the perennial ryegrass cultivars was not negatively impacted by a postemergence application of mesotrione. However, only twelve perennial ryegrass cultivars were evaluated in this study; therefore, caution may be warranted when using mesotrione with other perennial ryegrass cultivars. The effects of mesotrione applied postemergence on perennial ryegrass cultivars at three different temperatures, 5, 25, and 35°C, on chlorophyll concentration, leaf color, and total chlorophyll were investigated. At each temperature, there was a response within some cultivars. The cultivar ‘Derby Xtreme’ exhibited the most sensitivity to mesotrione at 5°C and ‘SR 4660ST’ was the most sensitive at 35C. The cultivar ‘PR 8821’ was the most sensitive overall at all evaluation timings and temperatures. The cultivar exhibiting the most tolerance to mesotrione was ‘Esquire’. Assessing perennial ryegrass cultivar response to mesotrione at one temperature versus another temperature resulted in ‘Allstar 3’ exhibiting less sensitivity at 35 than at 5 or 25°C. The majority of cultivars exhibited more sensitivity at 25 than at either 5 or 35°C. Turfgrass managers should use caution when applying mesotrione postemergence to some perennial ryegrass cultivars if temporary bleaching of the turf is undesirable.
Download or read book Effects of Seeding Rates of Perennial Ryegrass Lolium Perenne L on Sediment Loading and Nutrient Transport Via Surface Runoff written by Jason R. Anderson and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Preliminary Investigation Into the Root Systems of Perennial Ryegrass Lolium Perenne and White Clover Trifolium Repens Using a Prescribed Sampling Method for the Study written by H. G. Hopewell and published by . This book was released on 1939 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Distribution and Control of Herbicide resistant Italian Ryegrass Lolium Perenne L Ssp Multiflorum Lam Husnot in Arkansas written by James Walker Dickson and published by . This book was released on 2012 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt: Italian ryegrass populations have evolved resistance to herbicides that producers rely on for weed control both in wheat and burn-down. The objectives of this research were to: test populations of Italian ryegrass from across Arkansas for resistance to glyphosate, diclofop, pinoxaden, and pyroxsulam; determine if there were any differences in control of 12 glyphosate-resistant populations in relation to glyphosate rate or application timing; determine the level of glyphosate resistance in one selected population versus a susceptible standard and a previously discovered glyphosate-resistant population; and determine the best options for controlling Italian ryegrass prior to planting crops. A total of 215 population samples were tested. On average 17% of the samples were resistant to glyphosate, 95% were resistant to diclofop, 64% were resistant to pyroxsulam, and 12% were resistant to pinoxaden. A few were resistant to all four chemistries tested. Control of glyphosate-resistant populations was improved with the high rate of glyphosate at the three- to four-tiller growth stage; however, results for individual populations were variable. When averaged across populations, no rate or timing of glyphosate controlled these resistant populations greater than 62%. One population was found to be 23 times more tolerant to glyphosate than a susceptible standard. Three field experiments were conducted for Italian ryegrass control in the spring, in no-till production in the fall, and following fall tillage. Herbicide applications in the spring were unsuccessful, especially when glyphosate is not an option. Even when postemergence (POST) treatments visually controlled ryegrass at least 80%, enough ryegrass residue remained that would cause problems with spring tillage, planting, and overall crop stand establishment. In the fall-tilled study, the residual herbicides flumioxazin plus S-metolachlor, S-metolachlor, clomazone, and pyroxasulfone applied immediately following fall tillage reduced Italian ryegrass biomass by 83 to 95% at 200 days after treatment.
Download or read book Segmental Morphology of Perennial Ryegrass Lolium Perenne L written by Arif Hasan Khan Robin and published by . This book was released on 2011 with total page 604 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Effect of Perennial Ryegrass Lolium Perenne Sowing Rates on Weed Establishment After One Year written by Michelle Louise Armstrong and published by . This book was released on 2001 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Sustainable Grassland Productivity written by J. Lloveras and published by . This book was released on 2006 with total page 882 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Molecular Breeding of Forage Crops written by German Spangenberg and published by Springer Science & Business Media. This book was released on 2001-03-31 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of the 2nd International Symposium, Molecular Breeding of Forage Crops, Lorne and Hamilton, Victoria, Australia, November 19-24, 2000
Download or read book Ecological Implications of Livestock Herbivory in the West written by Martin Vavra and published by . This book was released on 1994 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt:
