. Vergers à feuilles caduques en Californie hivers. La culture des fruits, des plantes. Fig. 8. Gauche : rameau normal-terminal cluster fleur rouge de apple Canada, il suffit d'ouvrir le 22 juillet 1930, après un hiver chaud, au-dessus du brouillard d'hiver à Berkeley. Droit : un cluster anormale à la fin d'une assez longue, les tirer. berian les crabes, Malus baccata et com- mun des pommes. Quelques variétés de pommes, telles que les riches, sont à partir de croisements entre des pommettes et ap- ple, et ont tendance à avoir des exigences de refroidissement assez courte, donnée par Malus baccata. Variétés d'arbres de la Hume, riches, début de l'hiver, Mcintosh, blanc banane

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. Deciduous orchards in California winters. Fruit-culture; Plants. Fig. 8. Left: normal twig-terminal blossom cluster of Red Canada apple, just open on July 22, 1930, after a warm winter, above the winter fogs in Berkeley. Right: an abnormal cluster at the end of a rather long, leafy shoot. berian crabs, Malus baccata, and com- mon apples. A few varieties of apples, such as Wealthy, are from crosses be- tween crabapples and some common ap- ple, and tend to have fairly short chilling requirements, given by Malus baccata. Trees of the varieties Hume, Wealthy, Early Mcintosh, Winter Banana, White Pearmain, and possibly Wolf River, blossom and set fruit well after winters only a little cooler than most of those at low elevation in southern California, Hume better than the others after the warmest winters. Rhode Island Greening, Yellow Newtown, and Yellow Bellflower tend to require a little more chilling than White Pearmain, to cause the buds to open well; Delicious, Golden Delicious, Jonathan, Gravenstein, and Cox Orange, more than Yellow Newtown; Winesap. Red June, and Red Astrachan, still more; Mcintosh and Wagener still more; while Red Canada, Rome Beauty, Macoun, Twenty Ounce, and Northern Spy, among varieties that have been under observa- tion in California, require for good growth and fruiting the most chilling. Blossoms like that at the left in figure 8, opening in July or later from buds that should have opened in the spring, are common as far north as central Califor- nia. Such delayed blossoming and failure of any buds to grow from many twigs may be seen on trees of such varieties as Winesap in southern California; even buds of such varieties as Winter Banana and White Pearmain may be greatly de- layed in opening. Although the chilling requirement of Mcintosh is nearly that of the longest of [19. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illust

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