Rotations, Manuring and Fertilizing 51 



Some prefer to alternate the strawberry plants and the 

 tomatoes in the same row. Snap or string beans, onions, 

 beets, peas, lettuce, radishes and other vegetables are 

 grown between rows of strawberries occasionally. 



Strawberries as fillers between fruit-trees. 



The use of strawberries between fruit-trees is most 

 common in the irrigated sections of the Northwest, be- 

 tween rows of apples and peaches (Plate III) . It is better 

 to leave each row of trees in an unplanted and tilled strip 

 of land from six to ten feet wide. In the Yakima Valley, 

 Washington, strawberries are used as fillers in peach 

 orchards for three years, and in apple orchards for six 

 years. Care must be taken not to injure the trees by 

 the late irrigations that are necessary for strawberries, 

 especially the first season. In humid regions, strawberries 

 require tillage later in the season than is best for tree- 

 fruits. They should be used in the orchard only the 

 first two or three years and kept some distance from the 

 trees. Occasionally, strawberries are grown successfully 

 between rows of grapes, currants and gooseberries. 

 The results from companion cropping w^ill be disappoint- 

 ing unless the land is rich enough to support both crops 

 and is tilled intensively. There is a double drain upon 

 soil moisture and fertility. 



PLANT-FOOD REQUIREMENTS 



The strawberry is not an exhaustive crop. The slight 

 amount of plant-food in the berries is shown by the 

 analyses of L. L. Van Slyke : ^ 



1 Bui. 265, N. Y. (Geneva) Exp. Sta. (1905), p. 227. 



