Author: Raymond G. Jaindl
Publisher:
ISBN:
Category : Grazing
Languages : en
Pages : 258
Book Description
Perennial ryegrass (Lolium perenne) - white clover (Trifolium repens) hill-land pastures were grazed at different times in the winter to study the effect of time of winter grazing on plant response and forage production. The same pastures were grazed by sheep once in early December, January, February, March, or April and compared to an ungrazed control in each of three forage years (December 1983 to July 1986). Winter stock grazing densities were based on a three day grazing period and a 400 kg ha−1 dry matter residual. Grazing in the winter reduced herbage mass but had relatively little effect on subsequent forage production. This is consistent with the poor conditions for growth (relatively cold and low light levels) during the winter. Rates of herbage accumulation on the ungrazed control treatment averaged 6, -9, 2, 13, and 53 kg dry matter ha−1 day−1 in December, January, February, March, and April, respectively. Dead material accounted for more than 50% of the herbage mass in almost every month between December and March. By May, herbage mass on grazed treatments was similar to the ungrazed control except for treatments grazed in December and April which averaged 20 and 47% less forage than the ungrazed control, respectively. In May of the third year the December grazed treatment had significantly less perennial ryegrass and numerically more annual grass than the ungrazed control, and the January, February, and March grazed treatments. Total annual forage production and forage harvested annually were highly variable but tended to be higher on the January, February, and March grazed treatments than on the ungrazed control, and the December and April grazed treatments. Grazing management programs in temperate hill land pastures, such as are found in western Oregon, would require that forage grown in the fall be carried into the winter if pasture is to be used as a winter feed source. Date of winter grazing has minimal effect on subsequent spring production except for grazing in December which results in lower yields in May. Repeated annual grazing in December may reduce pasture production and increase annual grass dominance after several years.
The Effect of Winter Grazing on Production and Dynamics of a Lolium Perenne (L.)-Trifolium Repens (L.) Pasture
Effects of Grazing Management and Pasture Type on Perennial Ryegrass (Lolium Perenne L.) Persistence and Sheep Production in the Summer-dry Climate of South-western Victoria
Author: Raquel Anne Waller
Publisher:
ISBN:
Category : Arid regions climate
Languages : en
Pages : 322
Book Description
Publisher:
ISBN:
Category : Arid regions climate
Languages : en
Pages : 322
Book Description
Dissertation Abstracts International
Author:
Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 802
Book Description
Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 802
Book Description
New Zealand Journal of Agricultural Research
Pasture Management
Author: D Kemp
Publisher: CSIRO PUBLISHING
ISBN: 0643106197
Category : Technology & Engineering
Languages : en
Pages : 249
Book Description
This book looks at current knowledge on management of pastures and rangelands for sheep production, of problems, of practical solutions where possible, and of priority areas for research. The areas considered extend from the high rainfall perennial pastures of south-east Australia and New Zealand, through the annual pasture, cropping zones to the semi-arid rangelands. Pasture Management is the major reference on managing Australia's greatest natural resource: the resource which provides directly and indirectly a major part of Australia's export income.
Publisher: CSIRO PUBLISHING
ISBN: 0643106197
Category : Technology & Engineering
Languages : en
Pages : 249
Book Description
This book looks at current knowledge on management of pastures and rangelands for sheep production, of problems, of practical solutions where possible, and of priority areas for research. The areas considered extend from the high rainfall perennial pastures of south-east Australia and New Zealand, through the annual pasture, cropping zones to the semi-arid rangelands. Pasture Management is the major reference on managing Australia's greatest natural resource: the resource which provides directly and indirectly a major part of Australia's export income.
Environmental Effects of Conservation Practices on Grazing Lands
Author:
Publisher:
ISBN:
Category : Agricultural conservation
Languages : en
Pages : 402
Book Description
Publisher:
ISBN:
Category : Agricultural conservation
Languages : en
Pages : 402
Book Description
Advances in Agronomy
Author:
Publisher: Academic Press
ISBN: 0080524354
Category : Technology & Engineering
Languages : en
Pages : 303
Book Description
Advances in Agronomy continues to be recognized as a leading reference and a first-rate source of the latest research in agronomy. Major reviews deal with the current topics of interest to agronomists, as well as crop and soil scientists. As always, the subjects covered are varied and exemplary of the myriad subject matter dealt with by this long-running serial. Editor Donald Sparks, former president of the Soil Science Society of America and current president of the International Union of Soil Science, is the S. Hallock du Pont Chair of Plant and Soil Sciences at The University of Delaware. Volume 83 contains five excellent reviews that discuss topics critical to agricultural and environmental sustainability. - Maintains the highest impact factor among serial publications in Agriculture - Presents timely reviews on important agronomy issues - Enjoys a long-standing reputation for excellence in the field
Publisher: Academic Press
ISBN: 0080524354
Category : Technology & Engineering
Languages : en
Pages : 303
Book Description
Advances in Agronomy continues to be recognized as a leading reference and a first-rate source of the latest research in agronomy. Major reviews deal with the current topics of interest to agronomists, as well as crop and soil scientists. As always, the subjects covered are varied and exemplary of the myriad subject matter dealt with by this long-running serial. Editor Donald Sparks, former president of the Soil Science Society of America and current president of the International Union of Soil Science, is the S. Hallock du Pont Chair of Plant and Soil Sciences at The University of Delaware. Volume 83 contains five excellent reviews that discuss topics critical to agricultural and environmental sustainability. - Maintains the highest impact factor among serial publications in Agriculture - Presents timely reviews on important agronomy issues - Enjoys a long-standing reputation for excellence in the field