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peaches in corvallis
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cmullin
Philomath, OR
64 Posts
(Offline)
1
July 13, 2022 - 9:58 am

One of our local upick farms, they only do peaches, has a total loss because of an April frost. Did anybody have losses in peaches(or anything else) due to the late frost? They said the late spring frost wiped them out. I am in the west mid willamette valley, so maybe not everyone experience that. I know peaches are tough,(peach leaf curl) but they are my wife's favorite. We are planning to order several bare root peaches this fall. 

 

Chris

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Larry_G
142 Posts
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2
July 13, 2022 - 11:06 am

Wvalley frosts can occur until early May. This year, many locations  in the Valley had a mid-April hard freeze.

It affected many mid-valley grapes also.

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jafar
590 Posts
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3
July 13, 2022 - 11:12 am

I'm not sure the cause, but I had almost no fruit set on pears or European plums this year.   Peach and apple set is light.  Japanese plums are fine.

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cmullin
Philomath, OR
64 Posts
(Offline)
4
July 13, 2022 - 11:19 am

My pears or asian pears and apples are all none. No plums which I guess means they are European. I haven't checked grapes, they only leafed out about three weeks ago, so they might not even have fruit yet.

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Rooney
Vancouver SW Washington
656 Posts
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5
July 14, 2022 - 11:36 pm

I can see why it is that Jafar has almost no fruit set on pears and European plums. Being in Jafar's neck of the woods we got snow accumulation on the flowers and thus no bee activity. The one pear tree in my yard not very far from Orcas pear had two pears and only due to a controlled cross from pollen that originated from George Barton's Mishirasu pear. The colorful charts uploaded by Larry_G tell the rest of the story (ie. 2022) of how weather is the driving force of all this. 

For pear productivity, then of the two pear cultivars I mentioned, Mishirasu is far more productive in my parts compared to Orcas, but the latter (orcas) is much better desert quality. 

Now back from Alaska I should upload another option for pear trees that I got going. Will see if I can get the idea across on another topic of how happy I am in these lean years having aronia berry high grafted onto pear to produce large quantities of high antioxidant berries. 

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Rooney
Vancouver SW Washington
656 Posts
(Offline)
6
July 22, 2022 - 12:58 pm

cmullin said
One of our local upick farms, they only do peaches, has a total loss because of an April frost. Did anybody have losses in peaches(or anything else) due to the late frost? They said the late spring frost wiped them out. I am in the west mid willamette valley, so maybe not everyone experience that. I know peaches are tough,(peach leaf curl) but they are my wife's favorite. We are planning to order several bare root peaches this fall. 

Chris

There is more a concern than frost. There's this possibility if peach flowers as they are in development in the year previous they fall outside the proper environmental tolerance. 

What I am pointing towards is a lack of flower production in any one year of crop failures or low fruit set on the basis of if your location has too high a temperature in months following summer. The referral I am wanting you to consider is the first PDF document and page 17 when you use "thesis Gordon Arthur Stevens cherry" (without quotes), but it is referencing two other external studies that are not cherry specific but are peach specific. 

I don't have either of these two studies but fortunately the cherry thesis makes the summary of it on page 17 after you download it and open it.

There is a refrigeration supplier in California that sells inexpensive electronic recording devices that can generate a years worth of temperatures. I have several and find them easy because they are small and fit into a thumb-drive slot. 

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cmullin
Philomath, OR
64 Posts
(Offline)
7
July 23, 2022 - 3:44 pm

Sorry Rooney, where is the PDF? I don't see any attachments or links.

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Rooney
Vancouver SW Washington
656 Posts
(Offline)
8
July 23, 2022 - 5:42 pm

Go ahead and download it from >> here.

Hardly anybody knows what causes bud drop which is why it's important to scour resources the best you can. 

The recording device from California is valuable in this too. The model I have for about 15 dollars records about 4 months every few minutes another data point. I changed the sampling interval to about 4 per hour to get a full years worth+. The data handling software installs on computers then when inserted via usb is able to be graphed or handled as an export into PDF pages. then capable for further computer spreadsheet programs if you know how the way Larry_G knows. But none of that software is necessary because you can get by without using computers through the front button interface anyways and the little paper manual shows you how. You can always PM me and I can send you where I bought it.

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