ORGANIZATION OF THE UNITED STATES DEPARTMENT OF AGRICULTURE August 20, 1926 Secretary of Agriculture_. Director of Scientific Work_--- Director of Personnel and Business Administration. Solicitor Weather Bureau_-- Bureau of Agricultural Economics_. Bureau of Animal Industry---- Forest Service__--- Bureau of Dairying---- Fized Nitrogen Research Laboratory. Office of Experiment Stations___ Office of Cooperative Extension Work----- Federal Horticultural Board.. W. M. JARDINE. R. W. DUNLAP. WALTER G. CAMPBELL. C. W. WARBURTON. NELSON ANTRIM CRAWFORD. W. W. STOCK BERGER. R. W. WILLIAMS. CHARLES F. MARVIN, Chief. L. O. HOWARD, Chief. E. W. NELSON, Chief. THOMAS H. MACDONALD, Chief. LOUISE STANLEY, Chief. C. W. LARSON, Chief. F. G. COTTRELL, Director. E. W. ALLEN, Chief. C. B. SMITH, Chief. J. R. MAGNESS, Physiologist, H. C. DIEHL, Assistant Physiologist, M. H. HALLER, Ohio Agricultural Experiment Station, R. E. MARSHALL, Mich- CONTENTS 1.-Studies of the Ripening of Apples . . Page II.-The Ripening of Apples in Storage as Influenced by Temperature. 25 51 GOVERNMENT PRINTING OFFICE ADDITIONAL COPIES OF THIS PUBLICATION MAY BE PROCURED FROM THE SUPERINTENDENT OF DOCUMENTS WASHINGTON, D. C. AT 20 CENTS PER COPY In Cooperation with the Agricultural Experiment Stations of Massachusetts, New York (Cornell DEPARTMENT BULLETIN No. 1406 Washington, D. C. August, 1926 THE RIPENING, STORAGE, AND HANDLING OF APPLES By J. R. MAGNESS, Physiologist, H. C. DIEHL, Assistant Physiologist, M. H. HALLER, Junior Pomologist, and W. S. GRAHAM, Junior Physiologist, Office of Horticulture, Bureau of Plant Industry, with the cooperation of D. B. CARRICK, New York Agricultural Experiment Station at Cornell University, F. S. HOWLETT, Ohio Agricultural Experiment Station, R. E. MARSHALL, Michigan Agricultural Experiment Station, H. H. PLAGGE, Iowa Agricultural Experiment Station, and G. J. RALEIGH, Massachusetts Agricultural Experiment Station. Summary of Part I. 12 13 15 17 17 21 23 II. The ripening of apples in storage as influenced by temperature_ Influence of temperature on rate of softening-. Rates of softening at different temperatures. Influence of storing at low temperatures on softening rate when removed 35 Influence of time of picking on softening of apples stored at various 37 Yellowing of fruit in storage as affected by temperature. 39 Changes in chemical composition of apples stored at different tempera- The determination of the best time to remove apples from the tree is one of the most important problems which the fruit grower must 'Part I of this bulletin is based on contributions of data supplied jointly by the nine persons mentioned under the general title. 82956-26-1 1 |