| Background Information for this page |
| Return to radar list for Sanford ME |
| Weather data for Sanford ME. Forecast values begin October 17, 2008 |
| Key Dates are highlighted in yellow boxes |
| _________________________________________________________________________________ |
| Borers - Roundheaded Appletree Borer RAB & Dogwood Borer |
| RAB
adult emergence begins: June 5. Peak emergence: June 17. RAB egglaying begins: June 11. Peak egglaying period roughly: July 3 to July 16. |
| First RAB eggs hatch roughly: June 26. Peak hatch roughly: July 18 to August 5. |
| First Dogwood borer egg hatch roughly: July 6. Peak hatch roughly: August 7. |
| ____________________________________________________________________ |
| Codling Moth CM |
| Too early for CM status report |
| 1st
generation 3% CM egg hatch: June
12, Thursday (= target date for first spray where multiple sprays needed to control 1st generation CM) See Codling moth tables for follow-up spray dates to maintain protection through 1st generation CM egg hatch. |
| 1st
generation 20% CM egg hatch: June
21, Saturday (= target date where one spray needed to control 1st generation codling moth) |
| 2nd
generation 7% CM egg hatch: August
6, Wednesday (= target date for first spray where multiple sprays needed to control 2nd generation CM) If needed and allowed by preharvest interval, see the August Codling Moth table for follow-up spray dates. |
| 2nd
generation 30% CM egg hatch: August
18, Monday (= target date where one spray needed to control 2nd generation codling moth) |
| ____________________________________________________________________ |
| Lesser Appleworm LAW |
| 1st LAW flight begins around: May 19, Monday. Peak trap catch: May 29. |
| 2nd LAW flight begins around: July 15, Tuesday |
| ____________________________________________________________________ |
| Mullein Plant Bug MPB |
| The
expected 50% egg hatch date is: May
26, Monday, which is 6 days before rough estimate of Red Delicious petal fall date. |
| Most
accurate time for limb tapping counts, but possibly after MPB damage has
occurred, is 90% egg hatch date: May 30, Friday |
| ____________________________________________________________________ |
| Obliquebanded Leafroller OBLR |
| 1st generation OBLR flight begins around: June 15, Sunday |
| Where
waiting to sample late instar OBLR larvae is not an option (= where OBLR is known to be a problem, and will be managed with insecticide against young larvae): |
| Early
egg hatch and optimum date for initial application of B.t., Intrepid,
Proclaim, SpinTor or other insecticide with comparable efficacy against
OBLR (with follow-up applications as needed): July 1, Tuesday |
| Where
waiting to sample late instar OBLR larvae to determine need for
treatment is an option, or to check on results from earlier sprays: |
| Optimum
sample date for late instar summer generation OBLR larvae: July 10, Thursday If first OBLR late instar larvae sample is below threshold, date for confirmation follow-up: July 13, Sunday |
| ____________________________________________________________________ |
| Oriental Fruit Moth OFM |
1st generation OFM flight starts, and first treatment date if needed: May 9, Friday 1st generation - second treatment date, if needed: June 7, Saturday |
| 2nd
generation OFM flight begins around:
July 7, Monday 2nd generation - first treatment date, if needed: July 14, Monday 2nd generation - second treatment date, if needed: July 26, Saturday |
| _____________________________________________________________________ |
| Plum Curculio PC |
| Increased risk of PC damage as McIntosh and
similar cultivars increase fruit size: May 30, Friday |
| Earliest safe date for last PC insecticide spray: June 15, Sunday |
| Plum curculio spray intervals |
| If relying on repellance by Surround instead of PC mortality by insecticide, Surround coverage should be maintained until PC egglaying begins to naturally decline around Saturday, July 5. |
| ____________________________________________________________________ |
| Redbanded Leafroller RBLR |
| 1st
RBLR flight begins around April 24,
Thursday. Peak trap catch and approximate start of egg hatch: May 11, Sunday. |
| 2nd
RBLR flight begins around July 9,
Wednesday. Peak catch and approximate start of egg hatch: July 20 |
| ____________________________________________________________________ |
| San Jose Scale SJS |
| First
adult SJS caught on trap: May 26, Monday 1st generation SJS crawlers appear: June 25, Wednesday |
| ____________________________________________________________________ |
| Spotted
Tentiform Leafminer STLM (and presumably Apple Blotch Leafminer) |
| 1st STLM flight, peak trap catch: May 17, Saturday |
| 1st
generation sapfeeding mines start showing:
May 31, Saturday. Optimum sample date is around Sunday, June 1, when a larger portion of the mines are visible. |
| ____________________ |
| 2nd STLM flight begins around: June 23, Monday |
| Rough guess of when 2nd generation sap-feeding mines begin showing: July 11, Friday. |
| Optimum
first sample date for 2nd generation STLM sapfeeding mines is July 18, Friday |
| Second
optimized sample date for 2nd generation STLM sapfeeding mines, if needed:
July 25, Friday |
| Third
optimized sample date for 2nd generation STLM sapfeeding mines, if needed:
August 5, Tuesday |
| ____________________________________________________________________ |
| Tarnished Plant Bug TPB |
| Rough guess of when TPB begin showing on traps: April 21, Monday |
| Rough
guess of when TPB damage results in deformed fruit at harvest instead of aborted bud: May 5, Monday |
| ____________________________________________________________________ |
| White Apple Leafhopper WAL |
| 1st generation WAL found on apple foliage: May 23, Friday |
| 2nd generation WAL found on apple foliage: August 16, Saturday |
* Rose leafhopper is easily confused with WAL but has different generation dates. Rose leafhoppers typically immigrate into orchards from border row host plants between 1st and 2nd generation WAL. |