Results 181 to 190 of about 14,569 (230)
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Computers and Electronics in Agriculture, 2013
Graphical abstractDisplay Omitted Combining ultrasonic and spectral data improved predictions of grassland biomass.Enhancements were particularly obvious at high biomass levels.Ultrasonic sward height explained the majority of variance in predicted biomasses.Two-band vegetation indices performed best along slopes of water absorption bands.Increasing ...
Thomas Fricke, Michael Wachendorf
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Graphical abstractDisplay Omitted Combining ultrasonic and spectral data improved predictions of grassland biomass.Enhancements were particularly obvious at high biomass levels.Ultrasonic sward height explained the majority of variance in predicted biomasses.Two-band vegetation indices performed best along slopes of water absorption bands.Increasing ...
Thomas Fricke, Michael Wachendorf
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Effects of sward height and bulk density on bite dimensions of cattle grazing homogeneous swards
Grass and Forage Science, 1992AbstractEffects of sward height and density on the dimensions and weights of bites taken by cattle were examined. In one experiment, swards of dallisgrass lamina were constructed by hand in a factorial combination of four heights (80, 150, 180 and 300 mm) and three densities (c. 700, 1500 and 2700 g m−3).
E. A. LACA +3 more
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Influence of sward height on bite dimensions of horses
Animal Science, 2003AbstractThe management of pastures used by horses poses various problems: swards are often grazed down rapidly, patches of bare ground and refused areas develop. In order to gain a better understanding of the plant-animal interaction behind this problem the influence of sward height on bite dimensions (bite depth, weight, volume, area) of horses was ...
A. Naujeck, J. Hill
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Precision Agriculture, 2020
Accurate estimation of herbage mass (HM) is essential for optimising grass utilisation and increasing profit for pasture-based livestock agriculture. The rising plate meter (RPM) is used for predicting HM based on average compressed sward height (CSH).
D. J. Murphy +4 more
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Accurate estimation of herbage mass (HM) is essential for optimising grass utilisation and increasing profit for pasture-based livestock agriculture. The rising plate meter (RPM) is used for predicting HM based on average compressed sward height (CSH).
D. J. Murphy +4 more
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Effects of cattle grazing, sheep grazing, cutting and sward height on a grass-white clover sward
The Journal of Agricultural Science, 1981SUMMARYThirteen defoliation treatments were applied to a grass-white clover sward for 2 years to study some effects on the sward of cattle grazing compared with sheep grazing compared with various cutting treatments and to study the effect of height of defoliation.Sheep actively sought out the clover in preference to grass whereas the cattle did not ...
V. M. Briseño De La Hoz, D. Wilman
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Grass and Forage Science, 1997
The influence of sward height at the time of slurry application on sward responses to slurry was investigated using perennial ryegrass (Lolium perenne)/white clover (Trifolium repens) mini‐swards under greenhouse conditions. Pig slurry, cattle slurry and a fertilizer control were applied either to: swards cut 1 d before slurry application to heights of
Wightman, PS, Franklin, MF, Younie, D
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The influence of sward height at the time of slurry application on sward responses to slurry was investigated using perennial ryegrass (Lolium perenne)/white clover (Trifolium repens) mini‐swards under greenhouse conditions. Pig slurry, cattle slurry and a fertilizer control were applied either to: swards cut 1 d before slurry application to heights of
Wightman, PS, Franklin, MF, Younie, D
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Sward Height and Vertical Morphological Differentiation Determine Cattle Bite Dimensions
Agronomy Journal, 1993AbstractTo identify and quantify the influence of sward structure on the intake of grazing animals requires an understanding of sward‐animal interactions at the bite level. We tested the hypothesis that bite dimensions on vertically heterogeneous swards are determined by structural characteristics of the top leaf stratum, independent of those of a ...
Enrique R. Flores +3 more
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Proceedings of the British Society of Animal Production (1972), 1991
There is increasing interest in the development of later lambing systems for crossbred ewes which more closely match ewe nutritional requirements with grass growth (Stone, 1988). Lambing a proportion of the flock during summer potentially ensures a better continuity of lamb supply but the superior growth rate of summer born lambs dictates that ...
Linda M Mitchell +2 more
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There is increasing interest in the development of later lambing systems for crossbred ewes which more closely match ewe nutritional requirements with grass growth (Stone, 1988). Lambing a proportion of the flock during summer potentially ensures a better continuity of lamb supply but the superior growth rate of summer born lambs dictates that ...
Linda M Mitchell +2 more
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Sward Height and a Capacitance Probe for Estimating Herbage Mass
Journal of Agronomy and Crop Science, 1990AbstractEstimation of herbage mass is essential in pasture research and in making practical grazing management decisions. Sward height and a capacitance probe were evaluated as non‐destructive measures of herbage mass at seven dates from April 16 to July 30 on continuously grazed predominantly Kentucky bluegrass (Poa pratensis L.) pasture.
W. B. Bryan, W. V. Thayne, E. C. Prigge
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Proceedings of the British Society of Animal Production (1972), 1989
Lamb performance at grass falls in July/August on upland farms. Allowing sward height to rise has been recognised as having an amoreilating effect. The objective of this trial was to determine the influence of both sward quantity (sward height) and sward quality (sward type) on ewe and lamb performance from mid April to September.
J.E. Vipond +5 more
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Lamb performance at grass falls in July/August on upland farms. Allowing sward height to rise has been recognised as having an amoreilating effect. The objective of this trial was to determine the influence of both sward quantity (sward height) and sward quality (sward type) on ewe and lamb performance from mid April to September.
J.E. Vipond +5 more
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