Stripping of Soil-Applied Hexazione, Picloram, and Tebuthiuron for Loblolly Pine Site Preperation

1993 ◽  
Author(s):  
James D. Haywood
Keyword(s):  
Loblolly Pine

Polysulfide-borohydride modification of southern pine alkaline pulping integrated with hydrothermal pre-extraction of hemicelluloses

TAPPI Journal ◽  
2011 ◽  
Vol 10 (7) ◽  
pp. 9-16
Author(s):  
SUNG-HOON YOON ◽  
HARRY CULLINAN ◽  
GOPAL A. KRISHNAGOPALAN
Keyword(s):  
Loblolly Pine ◽  
Sodium Borohydride ◽  
Kraft Pulping ◽  
Hot Water ◽  
Pulp Yield ◽  
Paper Strength ◽  
Southern Pine ◽  
Two Stage ◽  
Simultaneous Treatment ◽  
Process Modification

We studied three process modifications to investigate their effects on the property and yield recovery capabilities of kraft pulping integrated with hemicellulose pre-extraction of southern pine. Loblolly pine chips were pre-extracted with hot water until the sugar extraction yield reached the targeted value of 10% and then subjected to conventional and modified kraft pulping. Modification included polysulfide pretreatment; polysulfide-sodium borohydride dual pretreatment, and polysulfide followed by polysulfide-sodium borohydride dual pretreatment two-stage pretreatments prior to kraft pulping. In the first modification, about 5% of the lost pulp yield (total 7%) caused by hemicellulose pre-extraction could be recovered with 15%-20% polysulfide pretreatment. Complete recovery (7%) was achieved with simultaneous pretreatment using 15% polysulfide and 0.5% sodium borohydride with 0.1% anthraquinone in polysulfide-sodium borohydride dual pretreatment. Two-stage pretreatment using recycled 15% polysulfide followed by simultaneous treatment of 6% polysulfide and 0.4%–0.5% sodium borohydride with 0.1% anthraquinone also achieved 100% yield recovery. Continuous recycling of 15% polysulfide employed in the two-stage process modification maintained its yield protection efficiency in a repeated recycling cycle. No significant changes in paper strength were found in handsheets prepared from the three process modifications, except for a minor reduction in tear strength.

Harvester Productivity for Row Thinning Loblolly Pine Plantations

1980 ◽  
Author(s):  
James E. Granskog ◽  
Walter C. Anderson
Keyword(s):  
Loblolly Pine ◽  
Pine Plantations

An Integrated Approach Toward Reducing Losses from Fusiform Rust in Merchantable Slash and Loblolly Pine Plantations

2000 ◽  
Author(s):  
Roger P. Belanger ◽  
Thomas Miller ◽  
Stanley J. Zarnoch ◽  
Stephen W. Fraedrich ◽  
John F. Godbee
Keyword(s):  
Loblolly Pine ◽  
Integrated Approach ◽  
Pine Plantations ◽  
Fusiform Rust

Water Quality Effects of Clearcutting Upper Coastal Plain Loblolly Pine Plantations

1985 ◽  
Vol 14 (3) ◽  
pp. 329-332 ◽  
Author(s):  
D. C. Mc Clurkin ◽  
P. D. Duffy ◽  
S. J. Ursic ◽  
N. S. Nelson
Keyword(s):  
Water Quality ◽  
Loblolly Pine ◽  
Coastal Plain ◽  
Pine Plantations

Atmosphere × Canopy Interactions of Nitric Acid Vapor in Loblolly Pine Grown in Open‐Top Chambers

1993 ◽  
Vol 22 (1) ◽  
pp. 70-80 ◽  
Author(s):  
G. E. Taylor ◽  
J. G. Owens ◽  
T. Grizzard ◽  
W. J. Selvidge
Keyword(s):  
Nitric Acid ◽  
Loblolly Pine ◽  
Acid Vapor ◽  
Open Top Chambers
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