CHE REFERENCE LIBRARY - ZetaTalk

CrFRTAIN ELEMENTS IN NUIHERY PRACTICE 173greenhouse bench or a garden, whether the plants are orchidsor ferns or raspberries, and whether for one’s own use or forsnle. In North America, the growing of fruit-trees is supposedto be the chief concern of a nursery. We have had acontinent to transform into or(41ards.Present, practice ill Sort11 Amerkan m~rst:ries is to use heavymachinery allcl imp1emeut.s fo1 major operatioils. The mechanicaltractor is used forroad work and sometimesin fitting the land. Heavys0iLcutting tools are emplayed(Plate XI). Overrowtillage is facilitated byWhet4 Ativators (PlateI\‘). A mechanical peaclk ~ i;pit planter is invented. -‘--c;-Root-grafts arc wrapped1)) njacl~iI~es (Plate 1’). , ^ -.;yL;;ze- 2:..- Ii----.- cLe;~f-]loppers aye captured - y ‘LiG .5->-:~~~~~~-. Iii&, wncl tlltl old hancL61igging 1)~ means of thelong spades is a thill g of the past in the large-area fruit-treeplantations. They are drawn by several teams of horses cbrmules, and sometimr3 l)JV wire &les pulled by stationaryeugines. Two of tile tree ploIvs are shown in Figs. 199 aurl200, md agairl in Plate XI. Two forms of tree-diggers usedin the Vnited States Forest Servir*c (Ml. -I?!)) are illustrateclin Figs. 201, WL1lkwyltrlltL!! ill lY!ltlfit~rl to ~“‘o~“‘~tx.tiolr.The best lard for general nursery purposes is heavy ratherthan light, containing a good percentage of clay beneath,