Show leaf area needed for best apple production the washington experiment lation has been bean conducting on the relation of leaf area to fruit it was found that twenty to thirty leaves for each fruit are necessary to produce nn an apple of commercial size under conditions in washington state and that forty to fifty leaves per fruit are needed if fruit buds are wanted for the next seasons crop the maintenance of i i vigorous growth of tree by an available supply of nitrogen abundance of organic matter and sufficient moisture will maintain a large laige lent leaf area there have been indications that in the east moisture Is most commonly the chief limiting factor of these three last iasi items it Is estimated that thal tho the average twenty to twenty five year old apple tree will carry sixty to one hundred thousand leaves which means that tile the crop on such a tree should be limited to otie thousand five hundred to two we thousand live alve hun hundred dried fruits it if best commercial size find and quil rual lity ltv ns well as annual crops are to be obtained |