Download or read book Comparative Response of Tall Fescue Lolium Arundinaea Schreb and Perennial Ryegrass Lolium Perenne L Swards to Variation in Defoliation Interval and Height written by Salesi Kaufononga and published by . This book was released on 2015 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Agrindex written by and published by . This book was released on 1995 with total page 1390 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Evaluation of tall fescue Festuca Arundinacea Schreb perennial ryegrass Lolium Perenne L and Kentucky bluegrass Poa Pratensis L turfgrass cultivars in Italy written by Simone Magni and published by . This book was released on with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Physiological Effects of Drought on Perennial Ryegrass Lolium Perenne L and Tall Fescue Festuca Arundinacea Schreb written by Tony R. Butler and published by . This book was released on 2008 with total page 149 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Growth and Forage Quality of Tall Fescue Festuca Arundinacea Schreb and Perennial Ryegrass Lolium Perenne L as Affected by Mefluidide written by Sabam Oloan Manurung and published by . This book was released on 1982 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt: Field study with 5 tall fescue genotypes treated at the vegetative growth stage, with 0, 0.28, 0.56, and 0.84 kg/ha of mefluidide was initiated in July, 1980. The regrowth of these plants were again treated at the booting growth stage in April, 1981, with the same rates of mefluidide as in the first experiment. In addition, three rates of mefluidide (0, 0.28, and 0.56 kg/ha) were applied at the floral initiation stage of perennial ryegrass cv. Linn in March, 1981. Four varieties of tall fescue were transplanted from the field into 6-inch pots in February, 1981, and grown under 50/60°F and 70/80°F night/day temperature regimes in growth chambers. Mefluidide at the rate of 0, 0.28, and 0.56 kg/ha were applied at the pre-floral or at floral initiation growth stage. The same varieties were again transplanted from the field into 6-inch pots in April, 1981, and grown under the same temperature regimes and treated at pre-booting or at booting growth stage with the same rate of mefluidide as those in the first growth chamber experiment. Mefluidide interacted with tall fescue genotypes and also resulted in a reduction in dry matter yield, ADF (Acid Detergent Fiber) and increased CP (Crude Protein) content in both tall fescue trials in the field. The WSC (Water Soluble Carbohydrate) concentration was reduced by mefluidide applied at the vegetative growth stage in the first experiment, but it was increased at the booting growth stage application of mefludide on regrowth of these plants. Late applications of mefluidide did maintain forage quality of tall fescue with some elimination of dry matter yield reduction caused by earlier application. In perennial ryegrass cv. Linn, mefluidide reduced stem dry matter production, but did not affect leaf dry matter yield. This was accompanied by high leaf/stem ratios and retardation of plant height. Fertile tiller production was inhibited, accompanied by reduction in ADF, increased stem CP and increased WSC of leaf and stem tissue. Under the 70/80°F night/day temperature regime, all varieties produced a higher dry matter yield than plants under a 50/60°F night/ day temperature regime. However, WSC content of leaf and stem were higher in the low temperature regime. There were indications that mefluidide reduced ADF and WSC content of leaf and stem tissues, but increased leaf and stem CP under both temperature regimes in both experiments. This was accompanied by high leaf/stem ratios of treated plants.
Download or read book Evaluation of Species Composition by Four Methods on Two Perennial Grass Pastures Festuca Arundinacea Schreb and Lolium Perenne L Grazed Lightly and Heavily in Western Oregon written by Rafael Pessot Zorich and published by . This book was released on 1966 with total page 93 pages. Available in PDF, EPUB and Kindle. Book excerpt: The present study was undertaken to evaluate the seasonal botanical composition of two grass pastures, tall fescue (Festuca arundinacea Schreb.) and perennial ryegrass (Lolium perenne L.). Botanical composition was determined by four methods: dry-weight-rank, weight-estimate, hand separation, and the constituent differential, with cattle and sheep grazing at two intensities. The pastures were sampled eight times during the growing season (March 23-July 8), taking 50, 25, 5, and 5 observations with the dry-weight-rank, weight-estimate, hand separation, and constituent differential methods, respectively, using a 2.4-square-foot circular plot. New sets of multipliers had to be determined for the dry-weight-rank method. Three different ways of grouping the data were tested. Best results were obtained in both pastures when all the data were grouped from all grazing treatments, because no significant differences were detected among the experimental errors in the analyses of variance used to test data arrangements. Consequently, the use of only one set of multipliers was found to be more practical. The same ways of grouping the data were used to calculate the regression equations to give the most accurate correction for the weight-estimate method. Uncorrected data were also tested. It was determined that best results were obtained in the fescue pastures when all the data were grouped within each of the grazing treatments. In the ryegrass pastures, on the other hand, all data collected in each sampling period was found to be the best arrangement, provided that the number of observations is increased to compensate for greater pasture variability. An analysis of variance was run on the information obtained with each method in both pastures. It was concluded that, in the fescue sections, the methods gave similar results regardless of the kind of livestock, grazing intensity, and sampling period. Units grazed by cattle showed a lower fescue percentage, especially those heavily grazed, than those grazed by sheep; grazing intensity did not affect the trend of the fescue percentages in the mixture which declined as the season progressed. In ryegrass pastures, the ryegrass percentages obtained in each case were influenced by all four treatments: methods, kind of livestock, grazing intensity, and sampling periods. It is apparent from this study that the constituent differential method is the most promising one, and more attention should be directed to it in the future. A study is proposed to explore some of the factors influencing the use of the constituent differential method for determining production and botanical composition on mixed grass-legume pastures.
Download or read book Bibliography of Agriculture written by and published by . This book was released on 1998 with total page 2312 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Root and Top Growth of Tall Fescue Festuca Elatior L and Perennial Ryegrass Lolium Perenne L as Influenced by Defoliation and Levels of Soil Nitrogen written by Nephus Jefferson and published by . This book was released on 1958 with total page 52 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 Evaluation of Turf Type Intergeneric Hybrids of Lolium Perenne with Festuca Pratensis for Improved Stress Tolerance written by Brent D. Barnes and published by Proquest, UMI Dissertation Publishing. This book was released on 2012-10 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recurrent selection for drought and heat tolerance among hybrids of perennial ryegrass ( Lolium perenne L.) with meadow fescue ( Festuca pratensis Huds.), was used to develop turf-type populations with a marked increase in stress tolerance. Increased tolerance was associated with the presence of an introgression of F. pratensis chromatin on chromosome 3 of L. perenne . To determine if root characteristics were responsible for the improved stress tolerance, a greenhouse study was conducted to compare sister lines of Festulolium both with or without the introgression; the recurrent backcross parent; a representative F. pratensis ; and turf-type tall fescue ( Festuca arundinacea Schreb.) grown under well-watered conditions in 5.1-cm diam. x 160-cm long tubes containing sand. Two separate 120-day experiments revealed that F. pratensis produced deeper roots, more root biomass, and a higher root:shoot, while the industry standard, F. arundinacea , ranked at or near the lowest value. For the hybrids and ryegrass, the root parameters were intermediate between the 2 fescues, with no statistically significant difference among the 3 lines tested. The results indicate that in the tested Festulolium turf, drought and heat tolerance were not a consequence of increased root depth or root biomass as reported in previous reports for forage-type intergeneric hybrids of ryegrass and fescue.
Download or read book An Evaluation of Tall Fescue Lolium Arundinaceum as an Alternative to Perennial Ryegrass Lolium Perenne for Use on Dairy Farms in the Waikato written by Elena Minneé and published by . This book was released on 2011 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 Factors Affecting the Response of Perennial Ryegrass Lolium Perenne L white Clover Trifolium Repens L Swards to Fertilizer Nitrogen written by Eid Elsayed Mohamed Elorong and published by . This book was released on 1993 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Factors Affecting the Response of Perennial Ryegrass Lolium Perenne L White Clover Trifolium Repens L Swards to Fertilizer Nitrogen written by E. E. M. Elorong and published by . This book was released on 1993 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Response of Tall Fescue to Variation in Mowing Height and Frequency written by Warren Edward Rickard and published by . This book was released on 1967 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Selection for Desirable Traits in Tall Fescue with Genetic Linkage and QTL Mapping written by Bryce A. Wehmeyer and published by . This book was released on 2016 with total page 139 pages. Available in PDF, EPUB and Kindle. Book excerpt: To investigate the genetic influences on tall fescue’s (Lolium arundinaceum [Schreb.] Darbysh.=Schedonorus arundinaceus [Schreb.] Dumort., formerly Festuca arundinacea Schreb. var. arundinacea Schreb.) performance, a number of studies were performed utilizing a pseudo F1 tall fescue population developed by crossing a drought tolerant female (B348) to a drought susceptible male (W947). These studies were designed to investigate the genetic influences over several agronomically relevant growth traits (plant height, tiller count, leaf width, water content (WC), and dry biomass yield (DBY). To investigate genetic influences using an agronomic approach, a number of analysis of variance (ANOVA) models were constructed, each focusing on a different component of tall fescue growth. The models measured different components of the total observed variation within that specific trait in response to two water treatment conditions (irrigated and rainfed). Selection within each of these traits was carried out using Fisher’s protected least significant difference (LSD) as well as a mean-adjusted index of merit for DBY. Additionally, a product moment correlation analysis measured correlations between traits, separated by water treatment, which suggested potential options for indirect selection. Results indicated a strong potential for tall fescue cultivar improvement via breeding trials and recurrent selection. The precursors for such a breeding program are presented here in the form of significant genotype main effect, selection within desirable agronomically relevant traits, and correlation data for several phenotypic traits. To investigate performance with respect to molecular genetics, genotypes and parental linkage maps were constructed with simple sequence repeat (SSR) markers. The female map covered 1,071 cM of tall fescue genome with, on average, a marker every 6.53 cM. The male parent map spanned 1,280 cM with an average marker density of 6.85 cM per marker. The future integration of this research with the existing SSR/amplified fragment length polymorphism (AFLP) map will allow for more complete molecular maps of tall fescue’s complex genome. Using the generated linkage maps, quantitative trait loci (QTL) were identified for the agronomically relevant traits of WC, tiller count, plant height and DBY. Each trait showed QTL which increased and/or decreased respective performance. All traits showed QTL effects that varied in response to water treatment. Several of the mapped linkage groups (LG) showed overlapping confidence intervals for QTL in different traits, indicating possible pleiotropic effects. A notable example of this occurred at 32.0 to 37.1 cM on LG 3F, where primary QTLs for plant height, tiller number, and a suggestive QTL for DBY were all detected. Additionally, several primary QTL were detected in either rainfed or irrigated conditions, but lacked a corresponding QTL in the contrasting water treatment. These results may correspond with significant genotype × irrigation interaction effects observed in the agronomic study. Each parent contributed QTL with positive and negative effects on growth and performance, but some traits showed significantly more QTL inherited from one parent and not the other. This was the case in tillering and DBY, which showed considerably more QTL in the maternal and paternal maps, respectively. The collection of synthesized data presented in this study will be directly relevant to future tall fescue breeding studies. This is especially true for studies that utilize marker-assisted breeding techniques or comparative mapping.
Download or read book Fodder Crops and Amenity Grasses written by Beat Boller and published by Springer Science & Business Media. This book was released on 2010-01-14 with total page 527 pages. Available in PDF, EPUB and Kindle. Book excerpt: Grassland farming in Europe was already established during the settlement of the rst farmers together with their domesticated animals after the last ice age. Since then, grassland provides the forage basis to feed ruminant animals for the p- duction of meat and milk. Depending on the ecological conditions and intensity of usage, various plant communities with different species developed, displaying a rich biodiversity. With the introduction of improved crop rotations at the end of the 16th century, grasses and legumes were also grown to an important extent as forage crops on arable land. In the last decades the importance of amenity grasses increased markedly, due to the demand of the society for new usages like landscape protection. Around 1900 interested farmers and academics identi ed the need for gra- land improvement through systematic selection and seed production. This marks the beginning of breeding and research in companies but also at universities and specialized research institutes. Plant collection started with many of the species that are still of importance today. The collected materials were grouped according to the intended use and some type of phenotypic selection was applied. Seed mul- plication of such populations was performed in pure stands and the harvested seed was marketed. Although the vegetative biomass and its quality are of utmost imp- tance in forage crop breeding, it is the seed yield potential which determines the commercial success of a new variety.
