. Cranberries; : the national cranberry magazine. Cranberries. ^henological Timing of isecticide Applications 3 Control the Cranberry Fruitworm CHARLES F. BRODELi jtract. A phenological wth stage of cranberry i used to time insecticide lications for the control ranberry fruitworm eggs . larvae in Massachusetts. { years of trials, applying 1st treatment 4 to 14 days er "50 percent out of om" led to statistically ivalent crop reductions, ts treated with parathion, zinon, or chlorpyrifos tained 2 to 8 percent of ! losses observed in reated plots. Delaying the treatment until 17 to 22 s
. Cranberries; : the national cranberry magazine. Cranberries. ^henological Timing of isecticide Applications 3 Control the Cranberry Fruitworm CHARLES F. BRODELi jtract. A phenological wth stage of cranberry i used to time insecticide lications for the control ranberry fruitworm eggs . larvae in Massachusetts. { years of trials, applying 1st treatment 4 to 14 days er "50 percent out of om" led to statistically ivalent crop reductions, ts treated with parathion, zinon, or chlorpyrifos tained 2 to 8 percent of ! losses observed in reated plots. Delaying the treatment until 17 to 22 s after "50 percent out of om" resulted in substan- ly greater losses. Data on progress of bloom, moth jrgence, and egg deposi- 1 aided in understanding efficacy of this timing thod. For the last 5 sea- is, the method has been d routinely by Cooperative tension and Cranberry il Program personnel in king recommendations to itrol the cranberry Itworm. he cranberry fruitworm (OF), (rodel conducted these studies while arch and Extension Entomologist at Mass Cranberry Experiment Station, Wareham, Mass. COVER PHOTO OTOGRAPHER ComeUus genbirk captured this nning photo during har- iting at the Lee Brothers' {in Chatsworth, Acrobasis vaccinii Riley (Lepi- ), is the most commonly occurring insect pest on Massachusetts cranberry bogs. Year after year, not many of the nearly 12,000 acres in the State escape evidences of an infestation. That is why one will not likely overhear a grower ask- ing, "Do I have CF on my bog this year?" Instead, his query will almost certainly be, "When should I apply insecticide to incur the least damage from this pest?" In the past, insecticide appli- cations for the control of CF eggs and larvae were scheduled according to one of 2 methods. The first involved calendar dates. It was noticed that, on average. firuit appeared on a particular bog by a certain date. This date was recorded as a reference point. Each
Size: 2051px × 1218px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookcontributorumassamherstlibraries, bookspons
