Results 181 to 190 of about 1,870 (201)
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Functional Plant Biology, 2011
Defoliation severity affects grass regrowth. The changes to biological processes affecting regrowth induced by severe defoliation are not fully understood, nor have they been investigated at a molecular level in field-grown plants. Field-grown perennial ryegrass (Lolium perenne L.) plants were defoliated to 20, 40 or 60 mm during winter.
Julia M, Lee +3 more
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Defoliation severity affects grass regrowth. The changes to biological processes affecting regrowth induced by severe defoliation are not fully understood, nor have they been investigated at a molecular level in field-grown plants. Field-grown perennial ryegrass (Lolium perenne L.) plants were defoliated to 20, 40 or 60 mm during winter.
Julia M, Lee +3 more
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THE EFFECT OF SEVERITY OF DEFOLIATION AND NITROGEN FERTILIZER ON THE GROWTH OF PHALARIS TUBEROSA L.
Grass and Forage Science, 1967The responses of Phalaris tuberosa L. to cutting to 1/2‐ and to 3‐in. at 3 levels of nitrogen (0, 23 and 92 lb/ac after each cut) were investigated in two irrigated, small‐plot trials. A technique involving the use of sheet‐iron borders embedded in the soil to contain root systems, irrigation water and fertilizer was developed. The 3‐in. cutting height
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Entomologia Experimentalis et Applicata, 1997
AbstractEight potato (Solanum tuberosum L.) lines and a control (cv. Russet Burbank) were screened for suitability to Colorado potato beetle, Leptinotarsa decemlineata (Say) (Chrysomelidae), and for defoliation levels in the field to determine whether laboratory‐obtained measures of performance are useful for predicting defoliation.
David R. Horton +5 more
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AbstractEight potato (Solanum tuberosum L.) lines and a control (cv. Russet Burbank) were screened for suitability to Colorado potato beetle, Leptinotarsa decemlineata (Say) (Chrysomelidae), and for defoliation levels in the field to determine whether laboratory‐obtained measures of performance are useful for predicting defoliation.
David R. Horton +5 more
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Sugar Maple Borer (Coleoptera: Cerambycidae) Activity Associated With Periods of Severe Defoliation
The Great Lakes Entomologist, 2018A perusal of previous research on sugar maple borer, Glycobius speciosus, in northern New York State strongly associates severe early and late season defoliation with increased borer damage. This re-examination of earlier work suggests foliage protection may be necessary when forest management objectives are concerned with wood volume and quality.
Robert A Wink, Douglas C Allen
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Severity of Soybean Stem Canker Disease Affected by Insect-Induced Defoliation
Plant Disease, 1989Greenhouse studies using the soybean (Glycine max) cultivar Bragg showed a significant ...
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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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The effects of severity of defoliation and soil moisture stress on Desmodium intortum
Australian Journal of Experimental Agriculture and Animal Husbandry, 1971The responses of five introductions and one cultivar of Desmodium intortum to two defoliation intensities under stress and non-stress soil moisture regimes were studied in a pot experiment. Both heavy defoliation and moisture stress reduced yield. Significant line X defoliation interactions occurred, including differences among the component lines of ...
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Grass and Forage Science, 1994
AbstractRegrowth of 3‐ and 4‐month old (‘young’ and ‘old’ respectively) sheep's burnet [Sanguisorba minor ssp. muricata (Spach) Briq.] was studied under limiting and non‐limiting moisture conditions in a glasshouse. Moisture deficits were imposed by using a single cycle of withholding moisture until first wilting.
G. B. DOUGLAS +3 more
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AbstractRegrowth of 3‐ and 4‐month old (‘young’ and ‘old’ respectively) sheep's burnet [Sanguisorba minor ssp. muricata (Spach) Briq.] was studied under limiting and non‐limiting moisture conditions in a glasshouse. Moisture deficits were imposed by using a single cycle of withholding moisture until first wilting.
G. B. DOUGLAS +3 more
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Canadian Journal of Forest Research, 1988
Balsam fir (Abiesbalsamea (L.) Mill.) trees that had been heavily defoliated by the spruce budworm (Choristoneurafumiferana (Clem.) were felled and examined for decays and secondary insect activity during the declining phase of the budworm outbreak. Trees were sampled in (i) a 25- to 30-year-old stand that had been spaced a decade earlier to about 2.4
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Balsam fir (Abiesbalsamea (L.) Mill.) trees that had been heavily defoliated by the spruce budworm (Choristoneurafumiferana (Clem.) were felled and examined for decays and secondary insect activity during the declining phase of the budworm outbreak. Trees were sampled in (i) a 25- to 30-year-old stand that had been spaced a decade earlier to about 2.4
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INFLUENCE OF DEFOLIATION TIMING AND SEVERITY ON CAULIFLOWER EARLINESS, YIELD AND QUALITY
Acta Horticulturae, 2003R.J. Dufault, B. Ward
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