Application of micronutrient elements to crop may avoid failure and cost is low
D. I. Arnon, Experiment Station
California Agriculture 1(3):4-4. DOI: 10.3733/ca.v001n03p4b.
D. I. Arnon, is Assistant Professor of Plant Nutrition and Assistant Plant Physiologist in the Experiment Station.
Not available – first paragraph follows:
Important crops in certain areas are saved from failure by application of small amounts of micronutrient chemical elements—sometimes of not more than 20 to 50 pounds to the acre.