CHE REFERENCE LIBRARY - ZetaTalk

PROPAGATION BY MEANS OF SEEDSAND SPORES 55“The seeding-trough is a device for holding theseeds. It is 8 inches deep, rounded slightly onthe bottorll and up one side, from 10 to l-1- in&eswide, 3rd 5 feet long. It is mounted on legs,raising it from 16 to 2-I iiichs Aove the ground.‘J’he trougli is set to straddle aseed-bed in which drills havebeen made, as indicated in theillustration (Fig. 34).”The beds are providedwith protection against winds,rodents, birds, sun and wintercold, by means of windbreaksand divers coverings andscreens. ,Some of these areshown in Figs. 35-35. Theseedlings are given careful\ attention in shading, water-I ,’ing, weeding, tilling, wintermulching an d otherwise.Y~llllg seedlings are shoxnRd. 39. Coniferlings.in Fig.‘, :1 1’: :N. .I very long and undesirable tap-‘.4 \’ root sJWerii is illustrated in Fig. 40.! ,’j sI n, This development is sometimes correc$t*tf!q root-priuliiq in the nursery:\ ILed by means of a knife thrust underlj 1~: ,’*the plants. Fig. 41 d10w a specially1good development. of a season’s growth\- _ as a result of fail seeding, whereby theFIG. 4U. SCNI- plant gets an early start in spring.ling of westernStock larger by one-half inch to twoyellow pine.inches can be produced in one year byfall than by spring sowing. The increased growth maymean the shortening by a year of the length of timenecessary for growing stork to a size suitable for fieldplanting.Forest nurseries operate with such numbers ofplants, wlkh must be cheaply produced, and thespecies involved in the processes are relatively sofew, that highly standardized methods soon arise.seed-FIG. 41. Douglasfir seedling,from fall-sownseed.