Citrus leaf analysis: Nutrient deficiencies, excesses and fertilizer requirements of soil indicated by diagnostic aid
H. D. Chapman
California Agriculture 3(11):10-14. DOI: 10.3733/ca.v003n11p10.
H. D. Chapman is Professor of Soils and Plant Nutrition and Chemist in the Experiment Station, Riverside.
Not available – first paragraph follows:
Analysis of citrus leaves as an aid in the diagnosis of the nutritional status of orchard trees—with particular attention given to the potassium state of orange trees—has been under study for a number of years at the Riverside Experiment Station.
The above progress report is based on Research Project No. 1373.