Circular, Numerot 51–125The Service |
Kirjan sisältä
Tulokset 1 - 5 kokonaismäärästä 98
Sivu 2
... shade the ground and furnish a litter which will maintain the proper moisture conditions . Without this the threes will neither grow rapidly nor preserve their vigor . On the semiarid plains , however , wide spacing and frequent ...
... shade the ground and furnish a litter which will maintain the proper moisture conditions . Without this the threes will neither grow rapidly nor preserve their vigor . On the semiarid plains , however , wide spacing and frequent ...
Sivu 3
... shade , undergrowth , and litter will be destroyed . In a well - established grove stock may do little harm , but until the crowns of the trees are entirely out of reach cattle should not be admitted . Even then injury may result from ...
... shade , undergrowth , and litter will be destroyed . In a well - established grove stock may do little harm , but until the crowns of the trees are entirely out of reach cattle should not be admitted . Even then injury may result from ...
Sivu 7
... protracted droughts are infrequent . It is rather intolerant of shade , and will not thrive beneath the crowns of taller trees . The rate of growth , except under the best conditions 16761 - No . 56-07 M Issued January 19 , 1907 .
... protracted droughts are infrequent . It is rather intolerant of shade , and will not thrive beneath the crowns of taller trees . The rate of growth , except under the best conditions 16761 - No . 56-07 M Issued January 19 , 1907 .
Sivu 11
... shade at all ages , and there- fore not well adapted for mixed plantations . It is one of the most rapid - growing pines , but is comparatively short lived , reaching maturity in about sixty years . Jack pine suffers little from insects ...
... shade at all ages , and there- fore not well adapted for mixed plantations . It is one of the most rapid - growing pines , but is comparatively short lived , reaching maturity in about sixty years . Jack pine suffers little from insects ...
Sivu
... shade , except when very young , and must always be allowed to keep its crown free . Red oak surpasses all other oaks in the rapidity of its growth , and is therefore a good tree to plant where conditions are suitable . Like the other ...
... shade , except when very young , and must always be allowed to keep its crown free . Red oak surpasses all other oaks in the rapidity of its growth , and is therefore a good tree to plant where conditions are suitable . Like the other ...
Muita painoksia - Näytä kaikki
Yleiset termit ja lausekkeet
acre amount Assistant Forester average black locust board feet catalpa chestnut Chief cost cottonwood creosote cubic foot cultivation Department of Agriculture distillation Douglas fir durable European larch fence posts fire flask FOREST PLANTING Forest Service FOREST SERVICE-Circular fractional distillation fractions GIFFORD PINCHOT grades green ash grow grown hardwoods heartwood honey locust inches in diameter insects land loblolly pine logging longleaf pine manufacture mixture Moisture per cent naphthalene North Platte Norway spruce nursery open-tank method Osage orange plantation poles poplar preservative protection quantity red cedar red oak red pine region retort roots rows seasoning seed seedlings shade soil South spacing species specific gravity sprouts spruce staves strength stumpage sugar maple TABLE tamarack tank temperature tests thinning timber tion transplanted treatment weight white elm white oak white pine windbreaks wood yellow pine young trees