High-yield orange orchards: Management practices and soil conditions studied in 43 mature, high-performance orchards in California
R. B. Harding, University of California College of Agriculture
California Agriculture 5(9):12-14. DOI: 10.3733/ca.v005n09p12.
Not available – first paragraph follows:
High-yielding orange orchards are being sampled throughout southern California to find clues as to management practices and soil conditions that will produce excellent citrus.
R. B. Harding is Assistant Chemist, University of California College of Agriculture, Riverside.
The above progress report is based on Research Project No. 1188.