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Health and Safety
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It's that time of the year when nursery workers are exposed to long hours in the sun. and are therefore at risk to a number of heat-related illnesses.
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Healthy Roots Lead to Healthy Plants
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Plants with healthy roots have fewer disease problems and should bring higher returns.Sharon M. Douglas
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Heat distribution options
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Heat Injury
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Abiotic Factors, Chapter 28Richard K. Hermann
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A Heat Sum Model For Loblolly Pine Pollen Development
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Catkin development was recorded at 2 to 7-day intervals in February and March of 1988 to 1992 for 90 ramets from 31 families at the Weyerhaueser Company's ...David L. Bramlett, Floyd E. Bridgwater and W. C. Woodbridge
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Heating System, Germination Temperature and Post Germination Fertilizer Regime Effects on White Spruce Nursery Growth
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Morphology of white spruce 1-0 seedlings grown with under bench heating did not differ from those grown with over bench heating. No differences were observed ...Christopher D. B. Hawkins, D. A. Draper and R. Y. N. Eng
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Heavy Duty Tree Planting Machine Developed in Nebraska
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Job quality of machine tree planting depends on the size and shape of the seedling stock and site conditions as well as the equipment use. Topography, soil ...Walter T. Bagley
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Heavy vs. medium choppers for preparing sandhill sites for pine
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In the sandhills of West Florida, sites dominated by scrub hardwoods and wiregrass can be converted to pine after intensive site preparation. The ...Robert D. McReynolds and Russell M. Burns
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Height and Diameter Growth Differences Among Eight Cherrybark Oak Provenances
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Cherrybark oak (Quercus pagoda Raf.) is an important and highly valued southern hardwood timber species. Previous studies have shown that growth differences ...Joshua P. Adams, Randall J. Rousseau and John C. Adams
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Height and Seasonal Growth Pattern of Jack Pine Full-Sib Families
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Total tree height, seasonal shoot elongation, dates of growth initiation and cessation, and mean daily growth rate were measured and analyzed for a ...Donald E. Riemenschneider
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Height Control of Interior Spruce by Means of Photoperiodic Induction
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Four blackout periods were each applied for 3 durations to control height in interior spruce species at Red Rock Research Station (RRRS). In all six seedlots ...Christopher D. B. Hawkins and D. A. Draper
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Height Growth of Loblolly Pine Improved Only Slightly After Ten Years of Tip Moth Control
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This study was designed to measure the influence of Nantucket pine tip moth (Rhyacionia frustrana Comst.) attack on height growth of loblolly pine (Pin us ...R. G. Merrifield, R. R. Foil and Thomas Hansbrough
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Height Growth of Noble Fir 8 Years After Planting in the Olympic Mountains
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Eight years after they were planted in the Olympic Mountains, average height of noble fir trees was 7.9 feet. Annual height growth the previous 3 years ...Marshall D. Murray and Dorothy LaRance
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Height Growth of Planted Shrubs and Trees in a Semiarid Rangeland in Western Montana
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We evaluated height development of restoration spe- cies in two studies in the semiarid foothills of the Sapphire Range in western Montana. In one study, ...Daniel W. Stone, Michael R. McTee, Lucas McIver and Philip W. Ramsey
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Height Growth Performance of White Spruce Provenances in Central Maine
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Height growth measurements were made in a range-wide geographic seed source test of white spruce on the Penobscot Experimental Forest, Bradley, Maine, after ...Ronald Wilkinson
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Height variation in a five-year-old yellow-poplar provenance/progeny test in Illinois
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Yellow-poplar height growth can be increased up to 10 percent by selecting the proper seed source; in southern Illinois this seed source is southwest ...George Rink
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Height, caliper growth, and biomass response of ten shade tree species to treeshelters
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Height-Age Relationships in a Loblolly Pine Varietal Screening Trial: Implications for Stand Yields
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Loblolly pine clonal forestry has progressed substantially in the Southern United States. Over 10 million somatic embryogenesis seedlings have been planted in ...C. O. Sabatia, Harold E. Burkhart and Phillip M. Dougherty
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Height-Related Trends in Leaf Xylem Anatomy and Shoot Hydraulic Characteristics in a Tall Conifer: Safety Versus Efficiency in Water Transport
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Growth and aboveground biomass accumulation follow a common pattern as tree size increases, with productivity peaking when leaf area reaches its maximum and ...B. Lachenbruch, D. R. Woodruff and F. C. Meinzer
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Helicopter Cone Harvesting - Is it Practical?
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An aerial cone rake was used by the Vermont State Tree Nursery and the Georgia-Pacific Nursery to efficiently harvest large quantities of balsam fir cones.William A. Baron
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Helicopter Cone Harvesting- Is It Practical?
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An aerial cone rake was used by the Vermont State Tree Nursery and the GeorgiaPacific Nursery to efficiently harvest large quantities of balsam fir (Abies ...William A. Baron
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Helicopter Seeders Can Damage Conifer Seed
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Helicopters are used in many parts of the country to broadcast tree seed on cutover, burned, or nonstocked lands. To determine if seed germination is ...Richard G. Hallman and Roland M. Stoleson
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Helping growers adapt to changing rules on fumigants
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© Herbicidal activity of glucosinolate degradation products in fermented meadowfoam (Limnanthes alba) seed meal
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Herbicidal Effects of Juglone as an Allelochemical
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Juglone is a natural constituent of walnut with phytotoxic and allelopathic properties. Its herbicidal effects on the weed species wild mustard (Sinapis ...A. Z. Tel, I. Kocacaliskan, O. Arslan and S. Topal
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Herbicide Aids Survival of Douglas-Fir Seedlings Planted on Dry Sites in Oregon; Root Wrapping has Little Effect
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Planting seedlings in containers or wrappers has often resulted in satisfactory survival on sites where planting of bare-rooted stock has been unsuccessful. ...Monroe Bickford and Richard K. Hermann
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Herbicide investigations in coniferous tree nurseries in Saskatchewan and Alberta
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In this paper I will provide a brief overview of the current research in weed control for the production of conifer seedlings and transplants in Alberta and ...R. Esau
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Herbicide Labeling
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Knowledge of pesticide law and regulation is necessary for the proper use of crop protection chemicals and to remain vigilant against the potential loss of ...Ken McNabb
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Herbicide Program at the PFRA Shelterbelt Centre
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The PFRA Shelterbelt Centre is a major supplier of conservation tree and shrub planting stock in Canada. Testing of herbicides for nursery weed control has ...Lyle K. Alspach and William R. Schroeder
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Herbicide Weed Control Results in Pine Seedbeds
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Several pre- and post-emergent herbicides were tested throughout the Southeast from 1974 to 1976 in seedbeds of loblolly, slash, shortleaf, longleaf, and ...David South, R. Hugh Crowley and Dean H. Gjerstad
