Evaluation of chemical treatments on pear, '70, '71
J. A. Beutel
W. J. Moller
W. O. Reil
L. B. Fitch, Sutter County
D. H. Chaney, Yuba County
California Agriculture 27(6):3-4.
Abstract Not Available – First paragraph follows:
Fireblight, caused by the bacterium Erwinia amylovora, was more severe in Sacramento Valley pear orchards during 1970 than any time in the previous 20 years. Following the warm winter of 1969-70, the regular pear bloom was prolonged for approximately a month with first bloom March 16 and petal fall ending in mid-April. “Rat-tail” (late season) bloom continued for several weeks during May and June. During much of this period, weather conditions favoring blight were ideal with temperatures over 65°F, and frequent rains. First widespread fireblight infections were observed in the Sacramento Valley between April 18-21, continuing through May and June.
; ; ; L. B. Fitch is Farm Advisor, Sutter County; D. H. Chaney is Farm Advisor, Yuba County;