Results 261 to 270 of about 18,042 (296)
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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
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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
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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
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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
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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
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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
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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
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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
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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
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Frequency and Severity of Defoliation of Crownvetch Stems by Grazing Sheep1
Agronomy Journal, 1970AbstractWhen crownvetch (Coronilla varia L.) was grazed by sheep (21 sheep/ha for 9 days), the probability that a leaf‐bearing stem would be grazed on any day was .134. Over O% of the leaves were removed from nearly all grazed stems, but 21 to 40, 41 to 60, 61 to 80, and 81 to 100% of the leaves were removed from equal numbers of stems. Stem tissue was
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Frequency and severity of defoliation of grass and clover by sheep at different stocking rates
Grass and Forage Science, 1982AbstractThe frequency and severity of defoliation of individual grass tillers and clover plant units was studied in Lolium perenne‐Trifolium repens swards grazed by sheep at stocking rates ranging from 25 to 55 sheep ha‐1 and either receiving no N fertilizer or 200 kg N ha‐1.
M. L. CURLL, R. J. WILKINS
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Effect of defoliation frequency on growth and survival of four accessions of Psoralea eriantha
Australian Journal of Experimental Agriculture and Animal Husbandry, 1975Four accessions of the semi-arid shrub legume Psoralea eriantha were evaluated under three six and nine week cutting regimes for 72 weeks in pots in the glasshouse. Total yield increased in all accessions with increasing intervals between cutting.
RC Gutteridge, PC Whiteman
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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
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Effect of Frequency and Method of Defoliation and Plant Size on the Survival of Multiflora Rose
Biological Agriculture & Horticulture, 1988ABSTRACT Multiflora rose (Rosa multiflora Thunb.), widely promoted in the 1930's and 1940's for soil stabilization in the USA, has become a serious weed in hill land pastures. Appropriate grazing management can provide biological control of undesirable plants, however, little information is available on the response of multiflora rose to defoliation ...
W. B. Bryan, T. A. Mills
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