Ca:Al Ratio Effects on Growth and Competitive Interactions of Northern Red Oak (Quercus rubra) and Yellow-Poplar (Liriodendron tulipifera)

1997 ◽  
Vol 124 (4) ◽  
pp. 286 ◽  
Author(s):  
Kelly L. M. Decker ◽  
Ralph E. J. Boerner
Keyword(s):  
Quercus Rubra ◽  
Liriodendron Tulipifera ◽  
Competitive Interactions ◽  
Red Oak ◽  
Northern Red Oak ◽  
Yellow Poplar

scholarly journals Spray deposition inside multiple-row nursery trees with a laser-guided sprayer1

2017 ◽  
Vol 35 (1) ◽  
pp. 13-23 ◽  
Author(s):  
H. Zhu ◽  
H. Liu ◽  
Y. Shen ◽  
Hengyu Liu ◽  
R. H. Zondag
Keyword(s):  
High Speed ◽  
Laser Scanning ◽  
Quercus Rubra ◽  
Spray Deposition ◽  
Field Tests ◽  
Red Oak ◽  
Northern Red Oak ◽  
Tree Structures ◽  
Speed Sensor ◽  
Tilia Tomentosa

Abstract Multiple-row container-grown trees require specially designed sprayers to achieve efficient spray delivery. A five-port air-assisted sprayer with both automatic and manual control modes was developed to discharge adequate spray deposition inside multiple-row trees. The sprayer resulted from integration of a high-speed laser-scanning sensor with a sophisticated nozzle flow control system, an embedded computer with a touch screen, a Doppler speed sensor, a specially-designed algorithm and an air-assisted sprayer base. It was able to detect target tree presence and measure target tree size, shape and leaf density. The sprayer then controlled the spray output of each nozzle to match tree structures. The sprayer was tested for its sprayer deposition quality inside canopies in a four-row sterling silver linden (Tilia tomentosa 'Sterling Silver' Moench) field and another six-row northern red oak (Quercus rubra L.) field. Tests were conducted with the sprayer in variable-rate application (VRA) and constant-rate application (CRA) modes. The average spray deposit on foliage of trees was 1.37±0.47 μL cm−2 from VRA and 1.29±0.42 μL cm−2 from CRA in linden, and was 2.15±0.57 μL cm−2 from VRA and 2.72±0.94 μL cm−2 from CRA in red oak, respectively. In comparison, spray coverage on foliage of trees was 19.8±3.0% from VRA and 20.9±4.3% from CRA in the linden trial, and was 27.9±3.7% from VRA and 30.5±5.4% from CRA, respectively, in the red oak trial. The newly developed air-assisted sprayer in both VRA and CRA modes would be able to discharge adequate spray deposition inside multiple-row tree plants while conserving pesticide. Index words: environmental protection, pest control, pesticide, precision sprayer, spray coverage. Species used in this study: sterling silver linden (Tilia tomentosa 'Sterling Silver' Moench), northern red oak (Quercus rubra L.).

scholarly journals Nanofibrillated Cellulose from Appalachian Hardwoods Logging Residues as Template for Antimicrobial Copper

2017 ◽  
Vol 2017 ◽  
pp. 1-14 ◽  
Author(s):  
Masoumeh Hassanzadeh ◽  
Ronald Sabo ◽  
Alan Rudie ◽  
Richard Reiner ◽  
Roland Gleisner ◽  
...  
Keyword(s):  
Oxidation Process ◽  
Metallic Copper ◽  
Nanofibrillated Cellulose ◽  
Strength Properties ◽  
Red Oak ◽  
Northern Red Oak ◽  
Yellow Poplar ◽  
Tempo Oxidation ◽  
Mechanical Fibrillation ◽  
Appalachian Hardwoods

TEMPO nanofibrillated cellulose (TNFC) from two underutilized Appalachian hardwoods, Northern red oak (Quercus rubra) and yellow poplar (Liriodendron tulipifera), was prepared to determine its feasibility to be used as template for antimicrobial metallic copper particles. In addition, a comparison of the TNFC from the two species in terms of their morphological, chemical, thermal, and mechanical properties was also performed. The woody biomass was provided in the form of logging residue from Preston County, West Virginia. A traditional kraft process was used to produce the pulp followed by a five-stage bleaching. Bleached pulps were then subjected to a TEMPO oxidation process using the TEMPO/NaBr/NaClO system to facilitate the final mechanical fibrillation process and surface incorporation of metallic copper. The final TNFC diameters for red oak and yellow poplar presented similar dimensions, 3.8±0.74 nm and 3.6±0.85 nm, respectively. The TNFC films fabricated from both species exhibited no statistical differences in both Young’s modulus and the final strength properties. Likely, after the TEMPO oxidation process both species exhibited similar carboxyl group content, of approximately 0.8 mmol/g, and both species demonstrated excellent capability to incorporate antimicrobial copper on their surfaces.

Precommercial Thinning Increases Diameter Growth of Appalachian Hardwood Stump Sprouts

1983 ◽  
Vol 7 (2) ◽  
pp. 93-97 ◽  
Author(s):  
Neil I. Lamson
Keyword(s):  
Quercus Rubra ◽  
Acer Rubrum ◽  
Height Growth ◽  
Prunus Serotina ◽  
Black Cherry ◽  
Northern Red Oak ◽  
Red Maple ◽  
Yellow Poplar ◽  
Precommercial Thinning ◽  
Stump Sprouts

Abstract In West Virginia crop trees were selected from 7- or 12-year-old yellow-poplar (Liriodendron tulipifera L.), basswood (Tilia americana L.), red maple (Acer rubrum L.), black cherry (Prunus serotina Ehrh.), and northern red oak (Quercus rubra L.) stump sprouts. Crop trees were dominant or codominant, well-formed sprouts that originated not more than 6 inches above groundline and did not fork in the lower 17 feet. Four treatments were evaluated: (1) control; (2) thinning; (3) pruning; and (4) thinning plus pruning. Five years after treatment the diameter (d.b.h.) growth of thinned sprouts was 1.5 times greater than that of control sprouts. Pruning did not cause a significant decrease in five-year d.b.h. growth. Height growth was not affected by the treatments. Most of the epicormic branches produced by pruning were dead five years after treatment. Natural pruning was reduced by thinning; the average clear bole length of thinned sprouts was about 2 feet shorter than that of the control sprouts. Survival was nearly 100 percent.

scholarly journals Auger Planting of Oak Seedlings

2003 ◽  
Vol 20 (2) ◽  
pp. 92-93
Author(s):  
Eric Heitzman ◽  
Adrian Grell
Keyword(s):  
Quercus Rubra ◽  
Red Oak ◽  
Northern Red Oak ◽  
White Oak ◽  
Growing Seasons ◽  
Oak Seedlings

Abstract In 2001, we used power augers to plant 1-0 northern red oak (Quercus rubra) and white oak (Q. alba) seedlings in stony soils in Arkansas. After two growing seasons, red oak and white oak survival was 86% and 91%, respectively. Both species had only grown an average of 1 ft in height in 2 yr. North. J. Appl. For. 20(2):92–93.

scholarly journals Effect of Overstory and Understory Vegetation Treatments on Removal of Planted Northern Red Oak Acorns by Rodents

2002 ◽  
Vol 19 (2) ◽  
pp. 88-92 ◽  
Author(s):  
Terry L. Sharik ◽  
David S. Buckley
Keyword(s):  
Quercus Rubra ◽  
Canopy Cover ◽  
Pinus Resinosa ◽  
Red Pine ◽  
Red Oak ◽  
Northern Red Oak ◽  
Herb Layer ◽  
Oak Regeneration ◽  
Layer Removal ◽  
Acorn Removal

Abstract We documented patterns in the removal of planted northern red oak (Quercus rubra) acorns by rodents in red pine (Pinus resinosa) stands during a field study of oak regeneration in northern Lower Michigan. Each stand contained four overstory treatments assigned at random: clearcut, 25% cover, 50% cover, and uncut (control). Each level of canopy cover contained four randomly assigned understory treatments: shrub-layer removal, herb-layer removal, litter removal, and a control. Rodents removed acorns from 59% of the seed spots in the uncut control and 12% of the seed spots in the clearcut treatment. This five-fold difference was significant. Acorns were removed from 48% and 40% of the seed spots in the 75% and 50% canopy cover treatments, respectively. Differences in acorn removal between understory treatments were not significant. These results suggest that overstory vegetation treatments can influence the removal of planted acorns by rodents, which has implications for the use of direct seeding for artificially regenerating northern red oak.

Acorns of invasive Northern Red Oak (Quercus rubra) in Europe are larval hosts for moths and beetles

2017 ◽  
Vol 19 (8) ◽  
pp. 2419-2425 ◽  
Author(s):  
Łukasz Myczko ◽  
Łukasz Dylewski ◽  
Artur Chrzanowski ◽  
Tim H. Sparks
Keyword(s):  
Quercus Rubra ◽  
Red Oak ◽  
Northern Red Oak
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