Download or read book Kentucky Bluegrass Versus Hybrid Bluegrass for the Elimination of Sod Net in Production Turf type Tall Fescue written by Rhonda Conn Britton and published by . This book was released on 2006 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Marketing of Kentucky Bluegrass and Orchard Grass Seeds written by Dana George Card and published by . This book was released on 1923 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Development and Characterization of Texas Bluegrass X Kentucky Bluegrass Interspecific Hybrids for the Southern United States written by Meghyn Brianne Meeks and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Kentucky bluegrass (Poa pratensis L.) and tall fescue (Festuca arundinacea Schreb.) are commonly grown cool-season grasses in the United States for home lawns and various sports turf applications. However, environmental conditions such as prolonged periods of drought and heat as well as heavy shade often result in a loss of visual appeal, early dormancy, or death of the turf stand. Hybrid bluegrass (Poa spp.) cultivars derived from Texas bluegrass (P. arachnifera Torr.) x Kentucky bluegrass interspecific crosses may serve as viable alternatives for perennial turfgrass in the southern United States. Methods to aid in the breeding and selection of Texas x Kentucky bluegrasses for these environmental conditions would be useful. The goals of this research were to 1) develop new interspecific hybrid bluegrasses and optimize a seed germination technique, 2) use flow cytometry and molecular markers for the characterization of hybrid progeny, and 3) evaluate the growth response and performance of hybrid bluegrasses maintained in shade. In 2012 and 2013, controlled pollinations were made between different Poa species. Seed from these crosses were germinated through two different techniques that resulted in 61 new interspecific hybrids. A higher percentage of individuals (89%) were recovered through germination on nutrient agar medium than soil. In addition to these hybrids, 52 Texas x Kentucky hybrids created in 2001 were tested for three years in multiple locations across the southern states and the transition zone. Experimental hybrid TAES 5653, registered as DALBG 1201, was the superior genotype. Flow cytometry was used to estimate the DNA content of 19 Texas bluegrass genotypes, and four Texas x Kentucky bluegrass hybrids from two different pedigrees. Variability in DNA content suggested variability in the ploidy levels of Texas bluegrass. Texas x Kentucky bluegrass interspecific hybrids had an intermediate DNA content demonstrating flow cytometry can identify true hybrids between parents with vastly different DNA content. A thioredoxin-like (trx) nuclear gene was also useful in identifying true Texas x Kentucky bluegrass hybrids. A distinctive 851 bp trx allele with a 163 bp insertion site was also identified. The insertion is evidently a transposable element that may help to elucidate ancestors of Texas bluegrass. Another study was conducted to develop a method of comparing Texas x Kentucky bluegrass hybrids to commercial cultivars for shade tolerance. It was determined that evaluations should be conducted in the spring to early summer months using moderate shade (50%) levels, and high turfgrass quality and slower leaf elongation rates as selective traits. Trinexapac-ethyl was not necessary to reduce the leaf elongation rate or increase quality of dwarf hybrids under shade. In summary, several methods have been tested to generate and evaluate new Texas x Kentucky bluegrass hybrids. Seed germination conducted under controlled conditions using agar medium, and flow cytometry and the trx nuclear gene can be employed in bluegrass breeding programs to identify true interspecific hybrids. Finally, improved dwarf-type hybrid bluegrasses, such as DALBG 1201 and TAES 5654, seem to have enhanced shade tolerance and potential for use as perennial turfgrass alternatives in the southern and transition zone regions of the United States. The electronic version of this dissertation is accessible from http://hdl.handle.net/1969.1/155246
Download or read book Kentucky Bluegrass and Tall Fescue Varieties For Lawns and Turf written by University of Kentucky. Dept. of Agronomy and published by . This book was released on 1974 with total page 3 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Farming with Bluegrass written by John B. Hutson and published by . This book was released on 1925 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Evaluation of Kentucky Bluegrass Poa Pratensis L and Red Fescue Festuca Rubra L Cultivars and Mixtures for Use in Sod Production written by Richard H. Hurley and published by . This book was released on 1972 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Seed Production of Kentucky Bluegrass as Influenced by Insects Fertilizers and Sod Management written by Jack Taif Spencer and published by . This book was released on 1949 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Tall Fescue and Tall Fescue Kentucky Bluegrass Turf as Influenced by Cutting Height Nitrogen and Irrigation written by Dale Thomas Duff and published by . This book was released on 1964 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Lawn Establishment written by R. C. Newman and published by . This book was released on 1988 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Kentucky Bluegrass in Missouri written by Bascom Milton King and published by . This book was released on 1927 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Tall Fescue and Tall Fescue Kentucky Bluegrass Turf as Influenced by Cutting Height Nitrogen Application and Irrigation written by Dale Thomas Duff and published by . This book was released on 1964 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Selective Control of Tall Fescue in Kentucky Bluegrass Turf and Pastures written by James Michael Goatley and published by . This book was released on 1985 with total page 326 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effects of Weed Control and Fertilization on Botanical Composition and Forage Yields of Kentucky Bluegrass Pasture written by Elroy John Peters and published by . This book was released on 1971 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Influence of Domestic Ryegrass and Redtop Upon the Growth of Kentucky Bluegrass and Chewing s Fescue in Lawn and Turf Mixtures written by M. H. Erdmann and published by . This book was released on 1946 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Comparative Analysis of Tall Fescue and Kentucky Bluegrass Cultivars in the Transition Zone written by Dave Fox and published by . This book was released on 1989 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Performance of Kentucky Bluegrass Tall Fescue and Buffalograss Under Line Source Irrigation written by Erik H. Ervin and published by . This book was released on 1995 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Management of Hybrid Bluegrass Poa Arachnifera Torr X Poa Pratensis L in the Transition Zone written by and published by . This book was released on 2006 with total page 159 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dura Blue[superscript TM] and Thermal Blue[superscript TM] hybrid bluegrass (Poa arachnifera Torr. x Poa pratensis L.) have been selected for increased heat and drought tolerance and offer an alternative to traditional Kentucky bluegrass and tall fescue in the transition zone. DuraBlue and Thermal Blue were compared to Apollo[superscript TM] Kentucky bluegrass, Dynasty[superscript TM] tall fescue, and Kentucky 31 tall fescue. All turfgrass species tested were acceptable for use in the transition zone. Thermal Blue should be seeded from 50 to 150 kg seed/ha. Thermal Blue should be seeded in September for highest quality and most rapid turf cover. However, January and April provided complete turf cover 7 months after seeding. Thermal Blue should be fertilized with 100 to 300 kg N/ha/yr. However, higher nitrogen fertility reduced turf quality in late summer and early fall. Thermal blue can be mowed at heights from 20 to 50 mm, although, mowing heights should be [greater than, less than] 35 mm to avoid decreased turf quality in the late summer and fall. Applications of the plant growth regulators ethephon and paclobutrazol caused injury to Thermal Blue during the summer and should be avoided. Thermal Blue exhibited a significant reduction in cover (>57%) from dithiopyr, oryzalin, oxadiazon, pendimethalin, prodiamine, quinclorac, and trifluralin applied at turf seeding. Postemergence applications of foramsulfuron and trifloxysulfuron on established Thermal Blue decreased turf quality and caused unacceptable injury (>15%). Established Thermal Blue treated with clethodim, fluazifop-p-butyl, and sethoxydim showed decreased quality and unacceptable injury (>15%). Hybrid bluegrass is thought to have increased heat tolerance based on greater total nonstructural carbohydrate (TNC) accumulation. Thermal Blue hybrid bluegrass, Apollo Kentucky bluegrass, Supranova[superscript TM] supina bluegrass, and Laser[superscript TM] rough bluegrass showed linear decreases in TNC accumulation in the leaves from April to July. However, hybrid bluegrass and Kentucky bluegrass showed a linear increase in TNC accumulation in the roots from April to July. This research indicated that hybrid bluegrass and Kentucky bluegrass may have more heat tolerance due to a reallocation of TNC from the leaves in April to the roots in July.
