Pocket gophers cause extensive damage to reforestation plantings in the western United States, and pose acute and chronic problems for forest managers. We examine the components of an integrated pest management strategy for reducing pocket gopher damage to conifers: the predictive factors for assessing the risk for damage, techniques for monitoring gopher populations and assessing efficacy of c...

The Development of Views regarding the Nature of Scientific Apparatus and Laboratory Methods: Chemical Forces: PROiFESSOR KASIMIR FAJANS ...... 99 A Manifold Desiccating Apparatus for DeterScientific Events: mining the Dry Weight of Small Samples of Historic Apparatus; British Air Route to the Wool: PROFESSOR JULIUS E. NORDBY. The PrepaArctic Regions; A Primary Standard of Light; ration of Perm...

This review compares fall acclimation patterns and lift/store practices for Pseudotsuga menziesii var. menziesii, Picea glauca (Moench) Voss x P. engelmannii Parry ex engelm and Pinus taeda L. seedlings. Spruce seedlings achieve budset and an endodormant state in late summer, coastal Douglas-fir in early fall, while loblolly pine achieves a less endodormant state with a limited amount of mitoti...

BACKGROUND The purpose of this study was to quantify the physical exertion during tree planting work and to examine the relationships between exertion, task efficiency, and productivity. METHODS Heart rate (HR) was monitored on 34 tree planters while they worked. HR data was collected for a complete working day on 19 subjects and for shorter periods of time on 15 subjects. Video of work tasks...

This study was carried out to find the economic value of forests by woodwork enterprises for reforestation Softwood Pine trees in Eastern Ethiopia, namely Dire Dawa administrative council, Harari regional state, and Deder district East Hararghe Zone. Forests Ethiopia were major sources softwood pine logs. Nowadays, some commercially important species are over-exploited short supply. The underta...