Horticulture, a text book for high schools and normals, including plant propagation; . 6. Give instructions regarding the picking of cherries. 7. What are the three main types of plums? Give examples of each. 8. Why should mummied fruits be removed from plum trees? 9. What crops can be used for inter-cropping? 10. Compare these crops as to suitability for this purpose. 11. Discuss methods of picking plums. 12. What are the chief insects affecting the plum? 13. What are the plums worst diseases. References.—U. S. Farmers Bulletins: 181, Pruning; 776, GrowingCherries East of the Rocky Mountains;
Horticulture, a text book for high schools and normals, including plant propagation; . 6. Give instructions regarding the picking of cherries. 7. What are the three main types of plums? Give examples of each. 8. Why should mummied fruits be removed from plum trees? 9. What crops can be used for inter-cropping? 10. Compare these crops as to suitability for this purpose. 11. Discuss methods of picking plums. 12. What are the chief insects affecting the plum? 13. What are the plums worst diseases. References.—U. S. Farmers Bulletins: 181, Pruning; 776, GrowingCherries East of the Rocky Mountains; 1053, Control of Cherry Leaf Spot;1096, Prevention of Damage from Frost; 1211, Home Canning. See Waughsbook of Plums and Plum Culture. CHAPTER XX STRAWBERRIES The strawberry is grown in all the humid parts of the UnitedStates (Fig. 160). It requires considerable moisture and shouldnot be grown where the rainfall is too light unless irrigation isprovided. Soils.—The best soils for growing strawberries are light sandyloams or medium sandy loams. The clay soils also produce the. UNITED STATES STRAWBERRIES ACREAGEEACH DOT REPRESENTS 100 ACRES Fig. 100.—Strawberry acreage in the United States. Strawberries are intensively cul-tivated for shipment largely to northern markets in several localities along the AtlanticCoast and in the lower Mississippi Valley. Important centers of production are also locatedin the Pacific Coast States. () strawberry well, but if dry weather follows heavy rains, the soil willbake and the yield be greatly reduced. The heavy soils may be made more suitable for strawberries by aheavy application of manure. This will add organic matter andloosen the soil. The addition of lime will also flocculate the soil andmake it more porous. If lime and manure are both added to heavysoils, the results will be very favorable to strawberries. Location.—It is well to have the strawberry plantation in asunny exposure where there is no shade from trees. Near t
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