The apple as affected by varying degrees of dormant and seasonal pruning . y Pruning Trees in Feet in Feet Stayman Winesap Heavy 24 Stayman Winesap Moderate 19 Stayman Winesap Light 19 Rome Heavy 13 Rome Moderate 8 Rome Light 11 Gravenstein Heavy 17 Gravenstein Moderate 7 Gravenstein _ Light 10 Stark ; Heavy 19 Stark Light 4 York Imperial, Grimes, and Heavy 7 Rome in Sheets Orchard Moderate 5 Light 6 12 AGRL EXPERIMENT STATION [Bulletin 15S It will
The apple as affected by varying degrees of dormant and seasonal pruning . y Pruning Trees in Feet in Feet Stayman Winesap Heavy 24 Stayman Winesap Moderate 19 Stayman Winesap Light 19 Rome Heavy 13 Rome Moderate 8 Rome Light 11 Gravenstein Heavy 17 Gravenstein Moderate 7 Gravenstein _ Light 10 Stark ; Heavy 19 Stark Light 4 York Imperial, Grimes, and Heavy 7 Rome in Sheets Orchard Moderate 5 Light 6 12 AGRL EXPERIMENT STATION [Bulletin 15S It will be seen from Table V that in no instance is theheight or width of trees as great in the case of heavy and mod-erate pruning as it is in the case of light pruning (see illustra-tion on cover and figs. 1, 2, and 3) and in only one instance,height of Gravenstein trees, is moderate pruning exceeded byheavy pruning. In the latter instance the width of the moder-ately pruned Gravenstein is greater than that of the heavilypruned trees. - ? - . ? - iR •- - - S > K *£. Fig. 2. — Stayman Winesap Given Fig. 3.—Stayman Winesap GivenLight Annual Dormant Pruning. Heavy Annual Dormant Pruning. Effect upon Form of Tree. The question naturally arisesas to what effect heavy and light pruning, particularly heavyand light heading back, may have upon the form of trees. Theeffect is more easily illustrated than described. Figures 4to 15 show typical trees of the different groups as they ap-peared each year. It is noticeable that the primary limb scaf-fold branches are longer following light pruning than follow-ing heavy pruning, and that the secondary branches start outat a greater distance from the trunk. This gives the tree asprawling habit during the first few years which is in sharpcontrast to the compact, neatly-built trees in the more heav-ily pruned plots. After the third or fourth year, however, thisdifference is not so noticeable, due to the thickening of scaf-fold limbs and the
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