. Deciduous orchards in California winters. Fruit-culture; Plants. there is not always enough cold weather in some districts to cause the buds to open satisfactorily. In fact, the crop in the southern part of the state has been re- duced greatly after some especially warm winters. This reduction was due in part to dropping of very small fruits after they had grown slightly from flowers that opened very late. Probably many of these fruits were from flowers that had never been pollinated; the pollen may all have been shed before the pistils on the last shoots to grow were ready for it. Crop re-
. Deciduous orchards in California winters. Fruit-culture; Plants. there is not always enough cold weather in some districts to cause the buds to open satisfactorily. In fact, the crop in the southern part of the state has been re- duced greatly after some especially warm winters. This reduction was due in part to dropping of very small fruits after they had grown slightly from flowers that opened very late. Probably many of these fruits were from flowers that had never been pollinated; the pollen may all have been shed before the pistils on the last shoots to grow were ready for it. Crop re- duction also came from failure of many buds to grow after the warmest winters. In figure 19 the crop in southern Cali- fornia counties for each year from 1917 to 1936 is shown in millions of pounds by the black bars. Each bar crossed with diagonal lines shows the mean tempera- ture for December, January, and Febru- ary preceding the crop indicated by the black bar to its right. Since nearly all the crop in those counties is from Santa Bar- bara soft-shell seedlings and varieties, any large reduction must be due to an. Fig. 19. Black bars: walnut crops, orchard run, in southern California counties. White bars with diagonal lines: mean temperatures, in degrees above 50° F, for December, January, and February; each white bar gives the temperature for the winter preceding the crop indicated by the black bar to its right. [35. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Chandler, William Henry, 1878-1970; Brown, Dillon S. , 1912-1998. [Berkeley, Calif. ] : College of Agriculture, University of California
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