| Background Information for this page |
| Return to radar list for Middletown RI |
| Weather data for Middletown RI. Forecast values begin September 2, 2008 |
| Key Dates are highlighted in yellow boxes |
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| Borers - Roundheaded Appletree Borer RAB & Dogwood Borer |
| RAB
adult emergence begins: May 31. Peak emergence: June 11. RAB egglaying begins: June 9. Peak egglaying period roughly: June 26 to July 9. |
| First RAB eggs hatch roughly: June 24. Peak hatch roughly: July 11 to July 29. |
| First Dogwood borer egg hatch roughly: June 30. Peak hatch roughly: August 1. |
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| Codling Moth CM |
| 1st
generation, first sustained trap catch biofix date: May 17, Saturday Codling moth development as of September 2: 2nd generation adult emergence at 100% and 2nd generation egg hatch at 95% In most orchards, insecticide targetted against plum curculio and apple maggot prevent codling moth damage. If targetted codling moth control is needed, key management dates are shown below: |
| 1st
generation 3% CM egg hatch: June
9, Monday (= 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
14, Saturday (= target date where one spray needed to control 1st generation codling moth) |
| 2nd
generation 7% CM egg hatch: July
27, Sunday (= 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
4, Monday (= target date where one spray needed to control 2nd generation codling moth) |
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| Lesser Appleworm LAW |
| 1st LAW flight begins around: May 11, Sunday. Peak trap catch: May 22. |
| 2nd LAW flight begins around: July 8, Tuesday |
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| Mullein Plant Bug MPB |
| The
expected 50% egg hatch date is: May
25, Sunday, which is -1 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 29, Thursday |
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| Obliquebanded Leafroller OBLR |
| 1st generation OBLR flight begins around: June 10, Tuesday |
| 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): June 25, Wednesday |
| 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 4, Friday If first OBLR late instar larvae sample is below threshold, date for confirmation follow-up: July 7, Monday |
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| Oriental Fruit Moth OFM |
1st generation OFM flight starts, and first treatment date if needed: April 30, Wednesday 1st generation - second treatment date, if needed: June 2, Monday |
| 2nd
generation OFM flight begins around:
June 29, Sunday 2nd generation - first treatment date, if needed: July 6, Sunday 2nd generation - second treatment date, if needed: July 17, Thursday |
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| Plum Curculio PC |
| Increased risk of PC damage as McIntosh and
similar cultivars increase fruit size: May 22, Thursday |
| Earliest safe date for last PC insecticide spray: May 29, Thursday |
| 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, June 28. |
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| Redbanded Leafroller RBLR |
| 1st
RBLR flight begins around April 19,
Saturday. Peak trap catch and approximate start of egg hatch: May 2, Friday. |
| 2nd
RBLR flight begins around July 2,
Wednesday. Peak catch and approximate start of egg hatch: July 10 |
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| San Jose Scale SJS |
| First
adult SJS caught on trap: May 17, Saturday 1st generation SJS crawlers appear: June 19, Thursday |
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| Spotted
Tentiform Leafminer STLM (and presumably Apple Blotch Leafminer) |
| 1st STLM flight, peak trap catch: May 10, Saturday |
| 1st
generation sapfeeding mines start showing:
May 22, Thursday. Optimum sample date is around Saturday, May 24, when a larger portion of the mines are visible. |
| ____________________ |
| 2nd STLM flight begins around: June 16, Monday |
| Rough guess of when 2nd generation sap-feeding mines begin showing: July 4, Friday. |
| Optimum
first sample date for 2nd generation STLM sapfeeding mines is July 11, Friday |
| Second
optimized sample date for 2nd generation STLM sapfeeding mines, if needed:
July 17, Thursday |
| Third
optimized sample date for 2nd generation STLM sapfeeding mines, if needed:
July 26, Saturday |
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| Tarnished Plant Bug TPB |
| Rough guess of when TPB begin showing on traps: April 13, Sunday |
| Rough
guess of when TPB damage results in deformed fruit at harvest instead of aborted bud: April 24, Thursday |
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| White Apple Leafhopper WAL |
| 1st generation WAL found on apple foliage: May 15, Thursday |
| 2nd generation WAL found on apple foliage: August 3, Sunday |
* 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. |