Florida Agricultural Experiment Stations


3. CHENG, K. L., and R. H. BRAY. Two specific methods of determining
 copper in soil and in plant material. Anal. Chem. 25: 655-659. 1953.
 4. ERWIN, T. C. Leaching and the availability of copper as affected by
 phosphorus and lime. Proc. Soil Sci. Soc. Fla. 7: 49-57. 1945.
 5. REITZ, II. J., C. D. LEONARD, J. W. SITES, W. F. SPENCER, 1. STEWART,
 and I. W. WANDER. Recommended fertilizers and nutritional sprays
 for ,itrus. Fla. Agr. Expt. Sta. Bul. 536. 1954.
 6. REUTHER, W., and P. F. SMITH. Toxic effect of copper on growth of
 citrus seedlings and its possible relation to acid-soil chlorosis in
 Florida citrus groves. Citrus Magazine 14 (11) : 25-27. 1952.
 7. REUTHER, W., and P. F. SMITH. Iron chlorosis in Florida groves in
 relation to certain soil constituents. Proc. Fla. State Hort. Soc.
 65: 62-69. 1952.
 8. REUTHER, W., P. F. SMITH, and A. W. SPECHT. Accumulation of the
 major bases and heavy metals in Florida citrus soils in relation to
 phosphate fertilization. Soil Science 72: 375-381. 1952.
 9. ROGERS, L. H., O. E. GALL, L. W. GADDUM, and R. M. BARNETTE. Dis-
 tribution of macro and micro elements in some soils of Pensinsular
 Florida. Fla. Agr. Expt. Sta. Bul. 341: 1-31. 1939.
10. STEENBJERG, F. Copper in the soil with special reference to the white
 tip disease. Tids. Planteavl 45: 259-369, 1940, or Chem. Zentr. 1:
 1724. 1941.
11. STEWART, IVAN, and C. D. LEONARD. Iron chlorosis-its possible causes
 and control. Citrus Magazine 14 (10) : 22-25. 1952.
12. VOLK, G. M., and M. PEECH. Factors affecting the soil sampling pro-
 cedure. Proc. Soil Sci. Soc. Fla. 2: 12-20. 1940.
13. WANDER, I. W. Soil reaction or pH. Citrus Magazine 13 (12): 17.
 1951.
14. WANDER, I. W. The relation of soil reaction to retention of applied
 manganese, copper and zinc in Lakeland fine sand. Fla. Agr. Exp.
 Sta. Ann. Rpt. 1953.
15. WESTGATE, P. J. Preliminary report on copper toxicity and iron
 chlorosis in old vegetable fields. Proc. Fla. State Hort. Soc. 65:
 143-146. 1952.