Orange fruit size: Five-year study of small fruit size covered 429 groves in six counties
J. C. Johnston, University of California College of Agriculture, Citrus Experiment Station
California Agriculture 4(11):12-12. DOI: 10.3733/ca.v004n11p12.
Not available – first paragraph follows:
Two outstanding causes of small fruit size in oranges are poor physical conditions of the soil and inadequate irrigation.
J. C. Johnston is Extension Specialist in Citriculture, University of California College of Agriculture, Citrus Experiment Station, Riverside.