Results 11 to 20 of about 18,616 (246)
Defoliation intensity and leaf area index recovery in defoliated swards: implications for forage accumulation [PDF]
Scientia Agricola, 2021 ABSTRACT: This study evaluated the leaf area index (LAI) recovery mechanisms and forage accumulation rates on the regrowth of different grass species subjected to different defoliation intensities. For that purpose, plots of Pennisetum clandestinum (kikuyugrass), Lolium multiflorum (annual ryegrass), and Avena strigosa (black oats) were defoliated from
Clóvis David Medeiros Martins +4 more
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Defoliation Frequency and Intensity Effects on Pasture Forage Quality [PDF]
Journal of Range Management, 1990 Both quantity and quality of pasture forage produced generally varies with frequency and intensity of plant defoliation. However, intensity and frequency of defoliation have rarely been evaluated simultaneously. The objective of this study was to quantify forage quality response to simultaneous changes in defoliation treatments over a range of values ...
Iraj Motazedian, Steven H. Sharrow
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Effect of Defoliation Intensity on Regrowth of Tallgrass Prairie [PDF]
Journal of Range Management, 1994 Grazing trials were conducted in north and south-central Oklahoma throughout the growing season of 1989 and 1990 in an attempt to explain live herbage accumulation rate of tallgrass prairie as a function of live residual herbage level. A 1-2 day grazing period on 8 treatment paddocks began 26 May (Trial 1), 7 July (Trial 2), and 18 August (Trial 3 ...
Kenneth W. Tate +3 more
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Crested Wheatgrass Defoliation Intensity and Season on Medusahead Invasion [PDF]
Rangeland Ecology & Management, 2008 The objective of this study was to determine the effects of crested wheatgrass (Agropyron cristatum [L.] Gaertn.) defoliation intensity and timing on medusahead density and biomass. We hypothesized that crested wheatgrass defoliation greater than 60% during the spring would provide maximum medusahead (Taeniatherum caput-medsae [L.] Nevski subsp ...
Roger L. Sheley +2 more
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Bioscience Journal, 2020 This study aimed to evaluate the morphogenetic, structural, and productive characteristics of Andropogon gayanus cv. ‘Planaltina’ subjected to different nitrogen fertilization levels and defoliation intensities.
Sâmara Stainy Cardoso Sanchês +7 more
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Rough Fescue Response to Season and Intensity of Defoliation [PDF]
Journal of Range Management, 1985 Rough fescue (Festuca scabrella Torr.) was subjected to 10 clipping regimes which varied in time or intensity of defoliation. The experiment was repeated at 2 sites for 3 consecutive years. Plant survival and vigor were evaluated the summer following defoliation.
Alastair McLean, Sandra Wikeem
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Grass Defoliation Intensity, Frequency, and Season Effects on Spotted Knapweed Invasion [PDF]
Journal of Range Management, 1999 Preventing the invasion of uninfested rangeland is central to managing spotted knapweed (Centaurea maculosa Lam.). Intensity, frequency, and season of grass defoliation determine the ability of grasses to tolerate grazing and resist weed invasion.
James S. Jacobs, Roger L. Sheley
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Defoliation Time and Intensity of Wall Barley in the Mediterranean Rangeland [PDF]
Journal of Range Management, 1999 Wall barley (Hordeum murinum L.) is the dominant species in northeastern rangeland of Jordan that decreases under grazing. We investigated the responses of wall barley to clipping time and height during 2 growing seasons in the semiarid rangeland of Jordan.
Moh'D Khair J. El-Shatnawi +3 more
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Does the type of silvicultural practice influence spruce budworm defoliation of seedlings?
Ecosphere, 2021 Spruce budworm (Choristoneura fumiferana (Clem)) is the main defoliator in the boreal forest of North America, and its outbreaks have major ecological and economic consequences and represent a challenge for forest management.
Janie Lavoie +3 more
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Effect of timing and intensity of defoliation on yield and quality of sugar beet
پژوهشهای زراعی ایران, 2009 The effect of defoliation on root yield and quality of suagrbeet (Beta vulgaris L.) was examined in a field study in Research Station of Faculty of Agriculture, Ferdowsi University of Mashhd during 2005 growing season.
ali kamandi +3 more
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