Shorter sprinkler irrigations reduce Botryosphaeria blight of pistachio

Michailides, T; Morgan, D; Grant, J; Olson, W

Shorter sprinkler irrigations reduce Botryosphaeria blight of pistachio

Authors

Themis J. Michailides
David P. Morgan
Joseph A. Grant
William H. Olson

Authors Affiliations

T. J. Michailides is Associate Research Plant Pathologist, Department of Plant Pathology, UC Berkeley, located at the Kearney Agricultural Center Parlier; D. P. Morgan is Staff Research Associate, Department of Plant Pathology, UC Berkeley, located at the Kearney Agricultural Center Parlier; J. A. Grant is Farm Advisor, Sun Joaquin County; W. H. Olson is Farm Advisor, Butte County.

Publication Information

Hilgardia 46(6):28-32. DOI:10.3733/ca.v046n06p28. November 1992.

PDF of full article, Cite this article

Abstract

Botryosphaeria panicle and shoot blight of pistachio caused by the fungus Botryosphaeria dothidea is favored by high temperatures, 80° to 85° F, and wetness periods longer than 12 hours. Based on these requirements, the disease becomes severe in late spring and summer when temperatures increase and after sprinkler irrigations begin. The disease was substantially reduced by shortening sprinkler irrigations from 24 to 12 hours and from 48 to 24 hours in two commercial pistachio orchards in the Sacramento and San Joaquin valleys, respectively.

Also in this issue:

Lessons from 1991 for a new era of water management

Conflict within irrigation districts may limit water transfer gains

Lessons of the Rosen study: District control of water transfers likely to benefit landowners

Imported parasite may help control European asparagus aphid

Furrow torpedoes improve irrigation water advance

Salt deposits in evaporation ponds: an environmental hazard?

In laboratory and field tests, water conditioners fail to improve infiltration or prevent clogging

Cover crops lower soil surface strength, may improve soil permeability

Eutypa armeniacae in apricot: Pathogenesis and induction of xylem soft rot