. Better fruit. Fruit-culture. April, ig20 BETTER FRUIT Page bloom, especially where the enforced dormant season of winter is very long. The blossoms, on the other hand, are very tender. There is a great range in the degree of frost which will cause injury, depending largely on the condi- tion of the tree during the time that the fruit buds are forming and developing, as well as on the duration and severity of the frost. Buds and blossoms on trees which have been forced into premature dormancy, either by lack of moisture or by severe attacks of red spider, arc much more susceptible to frost th
. Better fruit. Fruit-culture. April, ig20 BETTER FRUIT Page bloom, especially where the enforced dormant season of winter is very long. The blossoms, on the other hand, are very tender. There is a great range in the degree of frost which will cause injury, depending largely on the condi- tion of the tree during the time that the fruit buds are forming and developing, as well as on the duration and severity of the frost. Buds and blossoms on trees which have been forced into premature dormancy, either by lack of moisture or by severe attacks of red spider, arc much more susceptible to frost than those on trees which have continued growth late enough in the fall to pro- vide for the proper development and maturity of the buds. After differentia- tion of fruit buds commences in the summer, the almond leaves should re- main on the tree until late into the fall in order to strengthen and develop the fruit buds and store up the elaborated food material for the use of the buds in their normal development through the winter. Studies of almond buds gathered from healthy trees which held their leaves until late fall frosts at Davis, showed the first evidence of dif- ferentiation between fruit and flower buds commencing about August 18, while the flower was not completely developed until February 18 following. During the intervening time develop- ment proceeded unchecked through the winter even though the tree was ap- parently dormant. During the time the crop is ripening on the trees, little is done toward storing food material for the buds. If the leaves turn yellow or drop soon after harvest, the trees do not have the opportunity of storing a sufficient supply of plant food for their normal requirements and the buds are insufTiciently nourished during the winter period. The resulting buds are weakened and the indications are that they are unable to endure unfavorable climatic conditions in the spring, such as light frosts, continued cold weather. Courtesy College of Agricu
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