University of Minnesota, Duluth
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Transmission of tomato yellows, or curly top of the sugar beet, by Eutettix tenellus (Baker)
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Control of postharvest fruit decays in relation to residues of 2,6-dichloro-4-nitroaniline and difolatan
No full textField spray applications in 1961 on peach and apricot indicated lasting residual activity of DCNA under the California environment of high temperature with no rain, and high activity of residual DCNA against Rhizopus stolonifer with 1 and with 0.5 pound of DCNA in 100 gallons of water. Some activity against R. stolonifer was observed with 1 pound of captan and of folpet. DCNA activity was comparable with that of captan and folpet on Monilinia fructicola on peach and apricot, but not on apricots that showed little to no DCNA residue after seven days
Ecological factors limiting epidemics of hop downy mildew in arid climates
No full textThis study reports on factors affecting the development of hop downy mildew during the dry, hot season in the Sacramento Valley, as well as on factors contributing to the paucity of disease development in apparently favorable conditions. In flood-irrigated commercial hop yards, systemically infected shoots (which can be sources of inoculum) were present until late in the growing season. Dew and guttation fluid appeared on leaves and stems at the base of the plants after irrigation, but only a few lesions developed on the leaves