. Deciduous orchards in California winters. Fruit-culture; Plants. Bartlett, and Gorham. Order of blossom- ing may be partly due to the cool springs in Berkeley. Some varieties such as P. Barry and Forelle will start growth at lower temperature than others. The order there is due largely, however, to the amount of rest influence left to retard opening of the buds. That order is very different from the order in a climate like that of New York, where no rest influence is left to retard bud opening in spring. In such a climate, Bartlett blossoms rela- tively early and Winter Nelis late. In Califo
. Deciduous orchards in California winters. Fruit-culture; Plants. Bartlett, and Gorham. Order of blossom- ing may be partly due to the cool springs in Berkeley. Some varieties such as P. Barry and Forelle will start growth at lower temperature than others. The order there is due largely, however, to the amount of rest influence left to retard opening of the buds. That order is very different from the order in a climate like that of New York, where no rest influence is left to retard bud opening in spring. In such a climate, Bartlett blossoms rela- tively early and Winter Nelis late. In California, even at Davis where the amount of winter chilling is considerably greater than at Berkeley, Winter Nelis blossoms earlier than Bartlett, as figure 16 shows, sometimes considerably earlier if the winter is warmer. Most pear varieties blossoming in Berkeley earlier than Packham Choice have a little less chilling requirement than apple varieties except a few, such as Hume, Beverly Hills, Early Mcintosh, Winter Banana, and White Pearmain; but Bartlett has a greater chilling require- ment than medium apple varieties, such as Golden Delicious or even Winesap; and Gorham has still greater so that it will hardly grow at all in Berkeley and will not grow well enough in some good Bartlett districts in California. Bartlett's long chilling requirement tends to make it unsuitable for growing in the orchard or the dooryard at low elevations in southern California and at coastal positions with the warmest, sun- niest winters as far north as central Cali- fornia, but makes it an exceptionally good variety for growing in other dis- tricts. The rest influence remaining in spring delays its blossoming somewhat; this reduces the frost hazard and tends to cause the flowers to be open for polli- nation in better weather. In sunny foot- hill districts, some flower initials may die in the buds during especially warm winters, but even in these districts such losses are small compared with the fro
Size: 1973px × 1266px
Photo credit: © Central Historic Books / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., book, bookcentury1900, booksubjectfruitculture, booksubjectplants
