Upcoming Pest Events | Phenologies | Trap Catches | Pest Focus | Insects | Chem News

Upcoming Pest Events | Phenologies | Trap Catches | Pest Focus | Insects | Chem News

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Upcoming Pest Events | Phenologies | Trap Catches | Pest Focus | Insects | Chem News

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Upcoming Pest Events | Phenologies | Trap Catches | Pest Focus | Insects | Chem News

Newfield (Tompkins Co.) and Red Jacket (Wayne Co.): 1st codling moths caught
5/8.
Highland: Obliquebanded Leafroller late stage larvae observed.
Pear Psylla hardshells observed.
Rosy Apple Aphids evident in curled leaves.
Degree days (base 45F) from Oriental Fruit Moth biofix = 132.
Degree days (base 50F) from March 1 predicting San Jose Scale 1st
generation crawlers (at 500 DD) = 220.

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Geneva Predictions:
Roundheaded Appletree Borer
RAB adult emergence begins: May 27; Peak emergence: June 12.
RAB egglaying begins: June 7. Peak egglaying period roughly: June 28 to July 12.

Lesser Appleworm
1st LAW flight, first trap catch expected: May 8; Peak trap catch: May 18.

Mullein Plant Bug
Expected 50% egg hatch date: May 15, which is 5 days before rough estimate of Red Delicious petal fall date.
The most accurate time for limb tapping counts, but possibly after MPB damage has occurred, is when 90% of eggs have hatched.
90% egg hatch date: May 20.

Obliquebanded Leafroller
1st generation OBLR flight, first trap catch expected: June 9.

Oriental Fruit Moth
Optimum 1st generation first treatment date, if needed: May 3.

San Jose Scale
First adult SJS caught on trap: May 14.

Spotted Tentiform Leafminer
1st STLM flight, peak trap catch: May 9.
1st generation sapfeeding mines start showing: May 18.
Optimum sample date is around May 20, when a larger portion of the mines have become detectable.

White Apple Leafhopper
1st generation WALH found on apple foliage: May 11.

   Before we get into the thick of the internal worm management decision process this season, here is a synopsis of a small-plot efficacy trial conducted against oriental fruit moth in a NYSAES research orchard last year.

   Seasonal insecticide programs were applied with an airblast sprayer at 50 gpa.  One treatment received the first application at tight cluster (4 May), and the remainder of the treatments received their initial applications at petal fall (1 Jun), and then approximately every 14d depending on weather conditions.  Treatments, including an untreated check, were replicated 3 times in 4-tree blocks and arranged in a RCB design.  Cultivars within the treatment blocks were Empire, Cortland, Jonagold, and Delicious.  Treatments, materials and timings are listed on Table 1.

   First generation damage from the internal Lepidoptera complex (combination of oriental fruit moth, lesser appleworm, and codling moth) was taken from fruit on the tree on 11 Jul.  Final harvest evaluations were made on 27–29 Sept. by inspecting 100 fruit from each replicate.  Data was then subject to an analysis of variance.  Means were separated with Fisher's Protected LSD Test (P≤0.05).  Data was transformed arcsine (Sqrt x) prior to analysis.

   First generation damage from internal Lepidoptera was relatively low.  However, the damage found during harvest increased significantly.  Programs that contained a pyrethroid or an organophosphate controlled the worms fairly well, as well as the reduced-risk materials found in treatments 3 and 4.  However, all treatments were significantly better than the untreated check plot (41.3%).

Table 1.

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Upcoming Pest Events | Phenologies | Trap Catches | Pest Focus | Insects | Chem News

   The NYS DEC has announced the registration of Calypso 4F (Bayer CropScience, EPA Reg. No. 264-806) for use on apple, pear and quince in NYS.  The active ingredient, thiacloprid, is another new neo-nicotinoid insecticide.  Calypso possesses both excellent systemic activity and excellent crop safety.  Its mode of action is through interference with the nicotinergic acetylchloline receptor and controls pests by both contact and stomach activities.  Calypso has a low acute toxicity to warm-blooded animals; however, it is highly toxic to marine/estuarine invertebrates.  Calypso possesses activity on apples against aphids (except woolly apple aphid), leafminers, leafhoppers, mirid bugs, codling moth, oriental fruit moth, plum curculio, apple maggot, and European apple sawfly.  It will also suppress scale insects (crawler stage).  On pears, it is active against pear psylla, aphids, codling moth, mealybugs, leafminers, and the pear midge.  It will also suppress scale insects on pears.  Calypso has a 12-hour restricted entry interval (REI) and may not be applied less than 30 days before harvest (PHI = 30 days) on both apples and pears.  Do not apply more than 8 fl oz per acre in a single application and no more than 16 fl oz per acre per year on either apples or pears.  Not registered for use in Nassau or Suffolk Counties.

This material is based upon work supported by Smith Lever funds from the Cooperative State Research, Education, and Extension Service, U.S. Department of Agriculture. Any opinions, findings, conclusions, or recommendations expressed in this publication are those of the author(s) and do not necessarily reflect the view of the U.S. Department of Agriculture.

Scaffolds is published weekly from March to September by Cornell University -- NYS Agricultural Experiment Station (Geneva), and Ithaca -- with the assistance of Cornell Cooperative Extension. New York field reports welcomed. Send submissions by 3 p.m. Monday to:

Scaffolds Fruit Journal
Editors: A. Agnello, D. Kain
Dept. of Entomology, NYSAES
P.O. Box 462
Geneva, NY 14456-0462
Phone: 315-787-2341 FAX: 315-787-2326
E-mail: ama4@cornell.edu

Online at <http://www.nysaes.cornell.edu/ent/scaffolds/>