. Bulletin . uned treesand, at the same time, the scaffold limbs were well placed with noweak crotches. Details of this pruning are given under the differ-ent fruits. Pruning Bearing Trees for Fruitfulness Terminal Growth.—As the trees come into bearing, the pro-duction of fruit and the increasingly large top change the relation-ship of the parts of the tree. Annual growth becomes less witheach succeeding year until in a short time it affects fruitfulnessPruning and the application of fertilizers then become necessaryto keep the annual terminal growth at the right stage and to keepup fruitfuln
. Bulletin . uned treesand, at the same time, the scaffold limbs were well placed with noweak crotches. Details of this pruning are given under the differ-ent fruits. Pruning Bearing Trees for Fruitfulness Terminal Growth.—As the trees come into bearing, the pro-duction of fruit and the increasingly large top change the relation-ship of the parts of the tree. Annual growth becomes less witheach succeeding year until in a short time it affects fruitfulnessPruning and the application of fertilizers then become necessaryto keep the annual terminal growth at the right stage and to keepup fruitfulness. Fruit Spurs.—Fruit spurs must be kept in a vigorous condi-tion. In the same way that the medium terminal growth is the most fruitful, the medium-sized fruit spur is also the most fruitfulIn old trees, the fruit spurs are often undersized, and annualpruning with cuts well distributed is needed to keep them up to theproper growth standard. Individual fruit spurs on an apple tree do not bear every a- Fig. 4.—A bud study of apple wood. The buds a are large and strongand are probably fruit buds. Buds h are small and pointed and are prob-ably leaf buds. Where there are three or more large, healthy leaves on thespur to feed it, buds like a develop. Where there is a small leaf surfaceattached to the spur, a bud like 6 develops. Where there are no attachedleaves on the spur, the buds die out as at c. One year a spur bears. The next year this spur usually developsanother fruit bud. Thus each spur usually bears biennially. Some trees tend to grow spurs that are all uniform in growth,and all bloom and fruit together in the same year. Such trees arebiennial bearers. other trees grow fruit spurs of unequal length. As a result,only a part of these spurs bloom and fruit together one year, whilesome of the others bloom and fruit the following year. Such treesare annual bearers. Still other trees fruit largely from terminal buds and are an-nual bearers, because terminal fruit b
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