Twig blight of oaks in California
Eva I. Hecht-Poinar
Laurence R. Costello, University of California
J. R. Parmeter, UC Cooperative Extension
California Agriculture 43(1):15-16. DOI: 10.3733/ca.v043n01p15.
; Eva Hecht-Poinar is Associate Specialist, and John R. Parmeter, Jr., is Professor, Department of Plant Pathology, University of California, Berkeley; Laurence R. Costello is Farm Advisor, UC Cooperative Extension, San Mateo-San Francisco counties.
Twig blight of landscape oak trees was reduced to an acceptable level by pruning or by pruning plus treatment with a fungicide.
The authors thank C. S Koehler, A. H. McCain, R. D. Raabe, and F. W. Cobb, Jr., for many helpful suggestions, G. Slaughter and F. Determan for their help with the field work, C. Sauer (California Conservation Corps Nursery, Napa, California) and the Saratoga Horticultural Foundation for supplying many oak seedlings, the Stanford Grounds Department personnel for making the field study possible, and D. Rowney for statistical analysis of the data. Funds were provided by the Elvenia J. Slosson Endowment Fund.