Improved mite sampling may reduce acaricide use in roses
AuthorsJohn F. Karlik
Peter B. Goodell
Gary W. Osteen
Authors AffiliationsJ.F. Karlik is Farm Advisor, Kern County; P.B. Goodell is Regional IPM Advisor, Kearney Agricultural Center, Parlier; G.W. Osteen is an independent Pest Control Advisor based in Kern County.
Hilgardia 49(3):38-40. DOI:10.3733/ca.v049n03p38. May 1995.
Spider mites are considered to be the most important invertebrate pests of commercial field-grown rose plants, but sampling methods and treatment thresholds have been subjective. This study shows that roses exhibit a higher tolerance for spider mites than previously thought. Quality rose plants were produced with fewer acaricide treatmentsby using a rapid presence/absence field sampling method and treatment thresholds for spider mites.
Also in this issue:Epidemiology of stem rot disease of rice: Effects of burning vs. soil incorporation of rice residue
Charting DANR's future
Minimizing the hazards of dormant sprays to wildlife
Gomes named new DANR VP
March was the cruelest month
How new crop disaster policy could affect California
Can retailers depress lettuce prices at farm level?
New equations estimate evapotranspiration in Delta
Stylet oil provides limited control of aphid-transmitted viruses in melons
Efforts to reduce stratospheric ozone loss affect agriculture
Leafhopper prefers vines with greater amounts of irrigation
Postemergence herbicide controls johnsongrass, other weeds in field corn