Controlling rhizoctonia seedling disease of cotton in Southern California
AuthorsA. O. Paulus
Authors AffiliationsAlbert O. Paulus is Extension Plant Pathologist, Department of Plant Pathology, University of California, Riverside; Fugio Shibuya is Extension Laboratory Technician, Department of Plant Pathology, University of California, Riverside; Joseph Osgood, formerly in Imperial County, is now Farm Advisor in Tehama County; Thomas DeWolfe is Specialist, Department of Plant Pathology, University of California, Riverside; David Cudney is Farm Advisor, Imperial County; James House is Farm Advisor, Imperial County.
Hilgardia 24(8):12-14. DOI:10.3733/ca.v024n08p12. August 1970.
Best treatments for control of Rhizoctonia pre- and post-emergence damping-off of cotton seedlings were: (1) Terra-Coat L-21 (PCNB-Terrazole) seed treatment plus PCNB-Terrazole in-furrow granular; and (2) Demosan seed treatment. Demosan seed treatment plus Demosan in furrow granular was no better than Demosan seed treatment alone. Terra-Coat L-21 seed treatment plus PCNB-Terrazole in-furrow granular gave excellent control in one trial without the basic mercury treatment.
Intermediate in effectiveness were: (1) Vitavax seed treatment; (2) Terra-Coat L-21 seed treatment; and (3) PCNB in-furrow granular. However, Vitavax seed treatment was one of the best materials tested in two trials at the UC Meloland Field Station in Imperial Valley. Bay 78175 in-furrow spray effectively cantrolled Rhizoctonia damping-off in the only trial where it was applied.
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