Results 231 to 240 of about 17,840 (262)
Some of the next articles are maybe not open access.
Molecular Ecology, 1998
Permanent pastures and meadows are species‐rich vegetation systems that play an important role in the ecology and agriculture of temperate climates. Intensive management reduces species diversity and may also influence the genetic diversity within individual species and populations.
KÖLLIKER, R. +3 more
openaire +1 more source
Permanent pastures and meadows are species‐rich vegetation systems that play an important role in the ecology and agriculture of temperate climates. Intensive management reduces species diversity and may also influence the genetic diversity within individual species and populations.
KÖLLIKER, R. +3 more
openaire +1 more source
Grass and Forage Science, 2009
AbstractIn continuously stocked swards or pastures the frequency at which individual tillers and individual leaves are defoliated by ruminant livestock, relative to leaf lifespan of the grass species within the sward, determines the proportion of each leaf defoliated before senescence, and hence the efficiency of harvesting of herbage.
Lemaire, Gilles, G. +4 more
openaire +3 more sources
AbstractIn continuously stocked swards or pastures the frequency at which individual tillers and individual leaves are defoliated by ruminant livestock, relative to leaf lifespan of the grass species within the sward, determines the proportion of each leaf defoliated before senescence, and hence the efficiency of harvesting of herbage.
Lemaire, Gilles, G. +4 more
openaire +3 more sources
THE EFFECT OF FERTILIZER NITROGEN AND FREQUENCY OF DEFOLIATION ON YIELD OF GRASSLAND HERBAGE
Grass and Forage Science, 1965The effects of 4 levels of applied nitrogen, ranging from nil to a maximum of 417 lb N/ acre/annum, in all combinations with 3 frequencies of defoliation, ranging from 2 to a maximum of 10 cuts per annum, on herbage production from a perennial ryegrass/ timothy/meadow fescue/white clover sward were measured. These treatments were operative for 2J years,
R. Holliday, D. Wilman
openaire +1 more source
Rangeland Ecology & Management, 2018
Abstract Our ability to restore rangelands is limited, and it is unknown if seedling herbivory on its own, or in interaction with other stressors, is a major contributor to restoration failure. To address this, we conducted two experiments: a No Defoliation (ND) experiment (n = 48), in which seedlings from three perennial grasses (crested wheatgrass [
Elsie M. Denton +3 more
openaire +1 more source
Abstract Our ability to restore rangelands is limited, and it is unknown if seedling herbivory on its own, or in interaction with other stressors, is a major contributor to restoration failure. To address this, we conducted two experiments: a No Defoliation (ND) experiment (n = 48), in which seedlings from three perennial grasses (crested wheatgrass [
Elsie M. Denton +3 more
openaire +1 more source
Journal of Agronomy and Crop Science, 1988
AbstractResearch has identified changes in competitive abilities and relationships between herbage grasses due to seasonal variations and defoliation pressures. Thus, a study was carried out to evaluate the effects of these variables on competitive relationships between three popular herbage grasses of New Zealand, using the replacement series ...
U. R. Sangakkara, E. Roberts
openaire +1 more source
AbstractResearch has identified changes in competitive abilities and relationships between herbage grasses due to seasonal variations and defoliation pressures. Thus, a study was carried out to evaluate the effects of these variables on competitive relationships between three popular herbage grasses of New Zealand, using the replacement series ...
U. R. Sangakkara, E. Roberts
openaire +1 more source
Journal of Animal Science, 1995
Two experiments were conducted to determine the seasonal effects of N fertilizer (NF) and defoliation interval (DI) on specific N fractions within annual ryegrass (AR) and overall usage of AR N by growing lambs. In Exp. 1, NF (0, 112, 224, and 336 kg of N/ha) and DI of 2, 4, or 6 wk were factorially applied to AR plots.
Y, Zhang +3 more
openaire +2 more sources
Two experiments were conducted to determine the seasonal effects of N fertilizer (NF) and defoliation interval (DI) on specific N fractions within annual ryegrass (AR) and overall usage of AR N by growing lambs. In Exp. 1, NF (0, 112, 224, and 336 kg of N/ha) and DI of 2, 4, or 6 wk were factorially applied to AR plots.
Y, Zhang +3 more
openaire +2 more sources
The dynamics of lucerne (Medicago sativa L.) yield components in response to defoliation frequency
European Journal of Agronomy, 2007Abstract The productive life of lucerne (Medicago sativa L.) stands depends on the rate of mortality of individual plants. However, self-thinning of plant populations may be compensated for by increases in other yield components, namely shoots/plant and individual shoot mass.
Edmar I. Teixeira +3 more
openaire +1 more source
PHYLLOCRON IN A LOLIUM PERENNE L. SWARD: EFFECT OF DEFOLIATION FREQUENCY AND NITROGEN ADDITION
2011The aim of this study was to test the effect of three defoliation frequencies and three levels of nitrogen fertilization on the dynamics of growth, yield and nutritive value of Lolium perenne L. The trial was conducted from June 21st to November 7th, 2008. Mini-swards were established in 125 L containers. The experimental design was a randomized
Balocchi L., Oscar +4 more
openaire +2 more sources
The response to Anthephora pubescens Nees to different intensities and frequencies of defoliation
African Journal of Range and Forage Science, 1975A factorial experiment with four frequencies (2, 4, 6 or 8-weekly) and five intensities (2, 5, 8, 11 and 14 cm height) of clipping was carried out on Anthephora pubescens in a pot soil culture. Response was measured in terms of total dry matter clipping yield, root production and top growth/root ratio.Keywords: responses|defoliation intensities ...
SJ, Burger, J. O, Grunow, JW, Rabie
openaire +1 more source
2016
In Colombia at 2,560 m.a.s.l. the effect of three defoliation frequencies (3, 4.5 and 6 leaves tiller-1) was evaluated, during four months (August - November), on growth and nutritional quality of Kikuyu (Pennisetum clandestinum Hochst.ex Chiov). Nine plots of 6 x 4 m were established, which were distributed in a complete randomized block repeated ...
Balocchi, O. +3 more
openaire +2 more sources
In Colombia at 2,560 m.a.s.l. the effect of three defoliation frequencies (3, 4.5 and 6 leaves tiller-1) was evaluated, during four months (August - November), on growth and nutritional quality of Kikuyu (Pennisetum clandestinum Hochst.ex Chiov). Nine plots of 6 x 4 m were established, which were distributed in a complete randomized block repeated ...
Balocchi, O. +3 more
openaire +2 more sources