Eastern New York Commercial Horticulture Enrollment

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2018 Hudson Valley Crop Assessment for Thinning

May 21, 2018

During our tour of Hudson Valley orchards on Tuesday, we observed:

  • Overall, good return bloom on most varieties, especially when considering the large 2017 crop.

 

  • Honeycrisp were generally good with some light blocks where thinning was insufficient last year.

 

  • Some Fuji, Red Delicious, Golden Delicious, and Jonagold blocks have poor return bloom.

 

  • There were plenty of opportunities for good pollination, so a strong set is expected.

 

  • Depending on the variety and site, southern locations were approaching petal fall, northern locations were around petal fall king bloom.

 

  • Plenty of microclimate variability between sites, local scouting of blocks is essential.

 

  • Where we could tell, set appeared to be strong, plenty of 4's and 5's.

 

  • Severe storm activity on Tuesday afternoon from Albany, south.  One location was hailed severely, but the hope is that at this early stage, a marketable crop will make it through.

 

  • Can we summarize two days of scouting and meetings in a single phrase?  "Be prepared to thin early, thin hard, and thin often".

 

  • A bloom (now past in the HV) application of NAA at 10 ppm was a good idea this season, especially Gala.

 

  • We recommend an intensive block-by-block scouting to make good thinning decisions, and be aggressive when heavy bloom and good set are evident.

 

  • Use the Cornell Carbohydrate Model to adjust rates for 8 - 12 mm thinning.  However, use full rates at petal fall.

 

  • A reminder that old trees on more vigorous rootstocks thin easier (MM.111, MM.106, M.7), lower rates may be more appropriate in these orchards.  Trees on M.9 clones, Bud.9 and G-series rootstocks set more fruit and thin harder. Young trees thin very easy, see the guidance for young trees in the "Thinning Suggestions" article below.

 

  • There is a window for thinning Thursday afternoon and Friday of this week.  Temperatures will cool off for Friday and Saturday, then rise back up into the 70's for next week.  Not ideal conditions for 6BA products (MaxCel, Excilis 9.5SC, Exilis Plus) were we like to see three consecutive post-application days of 70+F temperatures, but just fine for NAA, and if you are in petal fall, carbaryl.

Do not skip the petal fall spray thinning spray due to the cool temperatures forecasted, Recall that last year we did see solid thinning activity from NAA/carbaryl combinations even though the weather was cool and wet.

 

  • At average growth rates, under these forecasted conditions, we can expect orchards at petal fall today will reach 8 mm on next Tuesday, although the strong set (4's & 5's) may slow that pace a bit. 

 

  • The weather forecast next week looks excellent for 6BA thinners.  However, weather forecasts have been highly inaccurate this season, and are likely to change.  Also, the forecasted weather looks to be excellent for carbohydrate production, which suggests that trees will be more difficult to thin. 

 

  • Our strong recommendation is to start thinning now (if not sooner), and don't wait until 8-10 mm.


more crops
Apples

Apples

Apricots

Apricots

Asparagus

Asparagus

Beets

Beets

Blueberries

Blueberries

Broccoli

Broccoli

Brussels Sprouts

Brussels Sprouts

Cabbage

Cabbage

Carrots

Carrots

Cauliflower

Cauliflower

Cherries

Cherries

Cucumbers

Cucumbers

Dry Beans

Dry Beans

Eggplant

Eggplant

Ethnic Vegetables

Ethnic Vegetables

Garlic

Garlic

Grapes

Grapes

Horseradish

Horseradish

Kohlrabi

Kohlrabi

Leeks

Leeks

Lettuce / Leafy Greens

Lettuce / Leafy Greens

Melons

Melons

Nectarines

Nectarines

Onions

Onions

Parsnips

Parsnips

Peaches

Peaches

Pears

Pears

Peas

Peas

Peppers

Peppers

Plums

Plums

Potatoes

Potatoes

Pumpkins / Gourds

Pumpkins / Gourds

Radishes

Radishes

Raspberries / Blackberries

Raspberries / Blackberries

Rhubarb

Rhubarb

Rutabaga

Rutabaga

Snap Beans

Snap Beans

Squash - Summer

Squash - Summer

Squash- Winter

Squash- Winter

Strawberries

Strawberries

Sweet Corn

Sweet Corn

Sweet Potatoes

Sweet Potatoes

Tomatoes

Tomatoes

Turnips

Turnips

more crops

Upcoming Events

2021 Spring Turn-Out Grazier Meeting

April 29, 2021

2021 Spring Turn-Out Grazier Meeting: Adapting livestock, Pasture Forbs, Spending Money. Presented by Cornell Cooperative Extension Educators: Ashely Pierce, Dayton Maxwell, and Aaron Gabriel.

view details

Announcements

U-Pick Farm Practices During Covid-19 Pandemic

U-Pick is a critical direct marketing approach for many of our farms and provides
customers with a unique connection to fresh produce grown close to home. In light
of what we understand about the spread of COVID-19, new management practices
will be needed to protect your farm team and your customers. This document
provides recommended practices and communication strategies for U-Pick
operations for the 2020 season.

https://rvpadmin.cce.cornell.edu/uploads/doc_864.pdf

Growers-are you running low on fall pumpkins, etc?

The Produce Auctions located around the state may have what you need.  Check out all of the opportunities here: https://harvestny.cce.cornell.edu/submission.php?id=4

Resources from CCE ENYCHP!

We are developing new ways to connect with the CCE ENYCHP team this year! We have a Youtube page located at this link. Check out videos on Table Grape Production, Pest Updates and the 20 Minute Ag Manager - in 4 Minutes series

We have a Facebook Page here as well as an Instagram page. We keep these places updated with current projects, events, and other interesting articles and deadlines.

There are also text alerts available. Fruit and vegetable farmers in 17 Eastern NY counties can now receive real time alerts on high risk disease and pest outbreaks texted directly to their cell phone. The Eastern NY Commercial Horticulture program, which is supported by local Cornell Cooperative Extension associations, will now offer text alerts to those that enroll in our program in 2019. 

The text alerts will be reserved for important crop alerts that could impact management decisions immediately. For instance, if there were an outbreak of Late Blight in the area, this would be transmitted to vegetable growers.

Farmers can choose the crop for which they wish to receive updates. Additionally they can request that Ag Business Alerts be sent to them. These alerts might include due dates for crop insurance deadlines, market opportunities etc.

If you have questions, please contact enychp@cornell.edu


Podcasts

Allium Leafminer (ALM) Update

April 8, 2021
Allium leafminer (ALM), a relatively new invasive species in the region, can cause devastating losses to scallions and leeks. Teresa Rusinek and Ethan Grundberg discuss their research to identify effective management strategies for the pest with host Crystal Stewart-Courtens.


Northeast SARE Progress Report: https://projects.sare.org/project-reports/one19-336/

Details the findings from Rusinek and Grundberg’s research to evaluate row cover and insect netting compared to two applications of Entrust and M-Pede to manage ALM.

University of Massachusetts 2020 Pests of the Year ALM Presentation: https://www.youtube.com/watch?v=IadfeJ1dWVo for the recording and https://cornell.box.com/s/wbtigjuuc82ufktu1ghfb0b2dh166mk5 for the slides in PDF

ALM Lookalikes and Visual Lifecycle PDF: https://cornell.box.com/s/q2rdq3vuih5xzoy8dwfu63mm5q980drn

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