Poma Tech News

Knowledge is power, which is why Poma Tech is passionate about communicating horticultural and pest emergence events to tree fruit growers throughout the Hudson Valley and beyond. Browse our archives of posts to find information relevant to your orchards.

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1st Plum Curculio Egg Laying Scars: Ginger Gold Fruitlets Beyond 10mm As Bloom Wains

Peter Jentsch | May 17, 2026 | Uncategorized

Overview: The Plum Curculio (PC)(Conotrachelus nenuphar) beetle is a primary insect pest of apples and stone fruit. It is is a true native weevil, found throughout the eastern states to the Rocky Mountains of the…


Signs of Green in Early Varieties Along the Mid-Hudson Valley of NY March 29th, 2026

Peter Jentsch | March 29, 2026 | Uncategorized

Overview: Weather in March over the past four weeks has not provided sound conditions for copper and oil applications to manage disease, mite and scale. Now that green tissue is showing, and warmer evening temperatures…


First Psylla Eggs Found on Mid-Hudson Valley Bartlett Pear. March 26th, 2026

Peter Jentsch | March 26, 2026 | Uncategorized

First Psylla Eggs Found on Mid-Hudson Valley Bartlett Pear. March 26th, 2026   Summary for Mid-Hudson Valley: Pear trees are moving through early bud development into delayed dormant. The first psylla eggs of the season were…


Early Flyers: Pre-Bloom ‘Worm Management’ in NY Apple Orchards. March 26th, 2026

Peter Jentsch | March 26, 2026 | Uncategorized

Looking ahead in the mid-Hudson Valley: The nest 7-days will bring warmer temperatures (Weather Underground – Click Image Right), with European Red Mite eggs beginning to respire, making them vulnerable to oil applications. Night temperatures…


Factors Contributing to the 2025 Mid-Hudson Valley Apple Pest Management Anomalies

Peter Jentsch | February 27, 2026 | Uncategorized

Rainfall accumulations & temperature events:  Total rainfall accumulations for the growing season between March 1st and November 1st in Milton, NY was 33.7”, significantly higher than 2024 with 27.5”. The start of the 2025 season…


Curculio Draws Nigh: Stone Fruit At Greatest Risk As Apple Bloom Wains.

Peter Jentsch | May 7, 2025 | Uncategorized

Overview: Plum Curculio (PC)(Conotrachelus nenuphar) and apple curculio adults have been found in Mid-Hudson Valley traps, employing a Benzaldehyde lure and Tedders Traps, over the past 10 days. Sustained rain driven cool temperature have kept…


Black Stem Borer Adults, Active Boring Observed In Orange County, NY April 21st 2025

Peter Jentsch | April 22, 2025 | Uncategorized

Brief: As of yesterday, black stem borer (BSB) adults have been found in Orange County, NY. Traps baited with ETOH in various commercial orchards in the Hudson Valley have recently shown dramatic increases in populations.…


Tarnished Fruitlets: Tight Cluster Tarnished Plant Bug Management.

Peter Jentsch | April 17, 2025 | Uncategorized

Overview: Southern winds are predicted to begin coasting into the Hudson Valley with increasing temperatures into this weekend, bringing pome fruit into late tight cluster and early pink in the earliest varieties. It seems like…


Enhance Cropping Of Apple After Cold Injury. Cornell & Michigan Studies.

Peter Jentsch | April 9, 2025 | Uncategorized

To enhance apple cropping after cold injury this season, consider pre-bloom foliar sprays, which may accelerate recovery of damaged vascular tissue and increase fruit set. Two studies have shown good results in supporting crop development…


First Pear Psylla Eggs on Bartlett Pear. March 28th, 2025

Peter Jentsch | March 29, 2025 | Uncategorized

Summary for the Mid-Hudson Valley: European pear trees are moving through the early swollen tip stage. The first psylla eggs of the season were found on Bartlett and Bosc pear trees on March 27th in…


Early Flyers: Pre-Bloom ‘Worm Management’ Considerations in ENY Apple Orchards. March 27th, 2025

Peter Jentsch | March 27, 2025 | Uncategorized

Summary:  Typically, the early ‘worm’ complex found in commercial apple emerge during the delayed dormant through pre-bloom period. This first flight begins with the emergence of red banded leafroller (RBLR) and the green fruit worm…


A Hint of Green in Early Apple Varieties in Southern & Mid-Hudson Valley of NYS. March 22, 2025

Peter Jentsch | March 22, 2025 | Uncategorized

Overview: Recent rains and wind over the past week have provided somewhat challenging conditions for copper and oil applications now that buds are showing the onset of green tissue. This is an import time to…


2024 Factors Contributing to Pest Management in the Hudson Valley .

Peter Jentsch | January 24, 2025 | Apples, Fruit Trees, Uncategorized

Rainfall accumulations & temperature events: Winter temperatures remained historically ‘mild’ with lowest temperatures in Milton, NY dipping below the teens during January 21st-22nd of 3.9o-7.0oF respectively. The lack of significant and long-term freeze events may…


Dry Conditions Increasing BMSB Movement Into Tree Fruit. Adult Threshold Exceeded in Mid-Hudson Valley. September 16th, 2024

Peter Jentsch | September 16, 2024 | Uncategorized

Synopsis: 1st and 2nd generation adult Brown Marmorated Stink Bug, Halyomorpha halys (BMSB) are increasing, nearing or exceeding threshold throughout Orange and Ulster County. Overwintering adults are now highly attracted to the ‘aggregation’ pheromone, making…


BMSB 2nd Generation. Adult threshold exceeded in Mid-Hudson Valley. September 9th, 2024

Peter Jentsch | September 9, 2024 | Uncategorized

Synopsis: Newly emerging nymphs and 1st generation adults have been on the increase, nearing or exceeding threshold throughout Orange and Ulster County. The early instar stages of Brown Marmorated Stink Bug (BMSB) Halyomorpha halys (Stål),…


Management: Apple Maggot & The Stink Bug Complex. August 16th, 2024

Peter Jentsch | August 16, 2024 | Apple MAggot, Apples, Stink Bug, Two-Spotted Spider Mite, Wooly Apple Aphid

Introduction: Mid-August: Apple Maggot (Rhagoletis pomonella) (AM) is one of the most important economic insect pests of apples in New York. We are in the tail end of peak emergence in the Hudson Valley with…


Apple Maggot: Flight Begins in the Mid-Hudson Valley.

Peter J Jentsch | July 7, 2024 | Apples, Fruit Trees, Oblique Banded Leafroller, Wooly Apple Aphid

Brief: Our orchards have multiple insect pests, some of which may require management this week. Oblique Banded Leafroller (OBLR) is well beyond peak hatch. The 1st hatch occurred 14th June, approximately 350DD from first sustained…


On the Wing: Codling Moth Emerges & PC Delays in the Mid-Hudson Valley Orchards. May 24th, 2024

Peter J Jentsch | May 24, 2024 | Apples, Codling Moth, Insects, Plum Curculio

1ST GEN. CM LARVA. The Brief: The first sustained adult Codling moth (CM) flight occurring on the 14th of May in Milton signals the adult biofix and start of the temperature modeling for the prediction…


May Madness…Reigning In Plum Curculio and Codling Moth

Peter J Jentsch | May 15, 2024 | Apples, European Apple Sawfly, European Red Mite, Insects, Lesser Appleworm, Mullein Plant Bug, Oblique Banded Leafroller, Oriental Fruit Moth, Red banded leafroller, Rosy Apple Aphid, San Jose Scale, Spongy Moth, Tarnished Plant Bug, White Apple Leafhopper , Wooly Apple Aphid

PC Damage during Early Fruit Set (5mm) Synopsis: We have seen fairly consistent and strong flowering and subsequent set this season. Fuji, Golden Delicious and other varieties with biannual propensity displaying variable in flower density…


Pink: Spray or Not to Spray (TPB)

Peter J Jentsch | April 24, 2024 | Apples, European Red Mite, Tarnished Plant Bug

TPB INJURY TO GALA.HUDSON, NY 2008 The most effective period of the season to control San Jose scale is during the pre-bloom period. Less foliage provides the best opportunity for greater application coverage to the…