Analyses of irrigation water: Waters of six rivers and nine wells in California studied to establish their usefulness for irrigation
AuthorL. D. Doneen
Author AffiliationsL.D. Donnen is Lecturer in Irrigation and Associate Agronomist, University of California College of Agriculture, Davis.
Hilgardia 4(11):6-14. DOI:10.3733/ca.v004n11p6. November 1950.
This is the second of two articles on the quality of water and plant tolerance to salts. The previous article, in the October issue of California Agriculture, explained the classification of irrigation waters in three groups:
Class I. Excellent to Good—Safe and suitable for most plants under any condition of soil and climate.
Class II. Good to Injurious—Possibly harmful for certain crops under certain conditions of soil OT climate.
Class III. Injurious to Unsatisfactory—Probably harmful to most crops and unsatisfactory for all but the most tolerant.
Also in this issue:Farm prices and production: Index numbers of prices received by farmers and of production indicate relative changes
Systemic insecticides: Control of plant feeding pests by poisoning plant juices studied
Olive flower-bud formation: Nutrients essential to tree during March and April when flower-buds are forming tests show
Smog in the south coastal area: Injury to herbaceous plants in the affected area found to be result of air pollution by gases and aerosols
Diagnoses of insect diseases: Microbial infections in insects diagnosed as part of the research in developing new ways of controlling crop pests
Orange fruit size: Five-year study of small fruit size covered 429 groves in six counties
Wind machines cost analysis: Cost records studied for effectiveness of machines in frost protection, operation and maintenance
Effects of various treatments on the carbon dioxide and oxygen in dormant potato tubers