Suspected virus disease rusty blotch of Japanese plums found throughout California

Pine, T

Suspected virus disease rusty blotch of Japanese plums found throughout California

Author

T. S. Pine

Author Affiliations

T. S. Pine is Research Associate, University of California, Riverside, and Plant Pathologist, United States Department of Agriculture.

Publication Information

Hilgardia 15(1):15-15. DOI:10.3733/ca.v015n01p15. January 1961.

PDF of full article, Cite this article

Abstract

Plum rusty blotch, a graft-transmissible disease of Japanese-type plums, has been observed on several commercial varieties throughout the plum-growing areas of California. During 1960 trees showing symptoms of plum rusty blotch were found in Fresno, Kern, Madera, Merced, Placer, Riverside, San Bernardino, San Joaquin, Santa Clara, Santa Cruz, Solano, Stanislaus Sutter, Tulare, and Yuba counties. The disease has been noted on the varieties Elephant Heart, Howard's Miracle, Kelsey, Laroda, Late Santa Rosa, Redroy, and Santa Rosa. The transmitting agent is not known.

Also in this issue:

Origin, dispersal, and variability of the lima bean, Phaseolus lunatus

University of California research on pear decline organized to find means to control or to live with the disease

Electronic devices to detect fruit maturity

Flight patterns of the peach twig borer

New method for studies on irrigation efficiencies

Blanching as an aid in dewatering forage

Climatic limitations on plant growth evaluated by balancing soil moisture against evaporation and transpiration

New California pest sorghum midge found in San Joaquin Valley

Disease of corn, sorghum, and sudangrass head smut established in California

Rapid method of estimating lime requirements of acid soils of California

Leaf analysis as a guide to nitrogen fertilization of oranges