Poor drainage and excess soil moisture encourage spread of: Avocado root rot
AuthorsR. M. Burns
M. P. Miller
R. B. Harding
K. D. Gowans
G. A. Zentmyer
Authors AffiliationsRobert M. Burns is Extension Horticulture Technologist, University of California, Riverside; M. P. Miller is Farm Advisor, Riverside County; R. B. Harding is Associate Chemist, U.C., Riverside; K. D. Gowans is Extension Soils Specialist, U.C., Davis; G. A. Zent-myer is Plant Pathologist, U.C., Riverside.
Hilgardia 17(8):13-13. DOI:10.3733/ca.v017n08p13. August 1963.
Only seven known avocado root rot infestations have been located out of the 450 acres of avocados grown in Riverside County, and of these, only one grove has been extensively damaged. As previously reported from preliminary results of the statewide survey, this Riverside study also showed that root rot damage is dependent on the introduction of the fungus P. cinna-momi in soils with poor internal drainage. However, even with the best soils, the rate of spread can be increased with excessive soil moisture.
Also in this issue:Rice — and research
Watergrass control in California rice fields
Rice varietal improvement in California
Rice plant injury: By invertebrate pests
Breeding new rice varieties for California: Effects of planting dates, seeding methods, low water temperatures
Nitrogen fertilization of rice in California
Environmental influences on seed and oil characteristics of: Flax
Cutting dates affect cooking quality of dark red kidney beans
Sod webworms and other lawn pests in California