Making Sense Of Weight Loss
Obesity is on the march. The numbers are plain. - 127 million adults within the U.S. Are ob…
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Showing posts with the label WeatherShow all
Disease management
Rain rain rain... What should we do?
As if almost a week of thunderstorms and rains was not enough, it looks like we are expecting even more rain in the coming week. Hopefully, you had a good protection before the rain, but even if you did, rain more than 1-2 inches can wash the material away from the canopy. Pleas…
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Disease management
A quick reminder before in-coming rain events
Looks like we will likely to have another round of rain from Hurricane Irma sometimes next week. Just a reminder that we do not have any curative materials for Botrytis and other late season rots. In order to obtain better results, you need to protect your vines before the rain!…
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Botrytis
Rain rain...
It has been pretty wet week so far. At Winchester, we observed about 11 hours of wetness on the 26th with an average temperature of 64F, 50+ hours (and counting) from the 28th to today with an average temperature of 61F. It is certainly long and warm enough for Botrytis infectio…
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Weather
On these unusually slow ripening issues
Maybe I should keep posting that rains are coming... Each time I do, it looks like rains disappear. ;) If you have not subscribed to the email list of Dr. Tony Wolf, who is our viticulturist, please do. It always have a wealth of information. In his latest newsletter, he explore…
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Fungicide application
List of low PHI materials for Botrytis, powdery mildew, and downy mildew
Well, I was hoping that the rest of the season would be nice and sunny, but I was little naive. Looks like some portion of VA may be affected by tropical storm Hermine. Plus, probably due to the hot several weeks with no cooling time during the night in August, some cultivars ha…
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Disease management
Last stretch!!
I heard that some of early cultivars are ready to be picked on 7-10 days. Looks like no tropical storms to worry, yet... (crossing my fingers!) There have been frequent thunderstorms went through our area, and some of them (like the one we had last night) resulted in a signific…
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Weather
Another extensive rain event recorded
As many other parts of VA, we have been experiencing thunderstorms running through our area in the past week for so. Yesterday, we had about 9 hours of wetness with an average temperature of low 70's, then followed by a very humid night with an average temperature of mid-60&…
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Disease management
An extensive wetness event recorded (and still going)
A cool and wet Fourth of July weekend resulted in a very long leaf wetness hours. So far, more than 12 hours of wetness has been recorded at Winchester AREC, and at this rate, it will go on over the night (= potentially it will be a longer than 24 hours of wetness event). As not…
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Disease management
What to do when you receive a lots of rain after fungicide application?
At Winchester area, we ended up having a pretty good weekend. There were several periods with rain, but it was not as extensive as the forecast. We received about an inch total over 2-3 days. However, it looks like the central VA received more rain than we did. I would like to s…
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Disease management
Another rain events in the forecast...
Our Chardonnay vines are getting close to full bloom, and of course, we are expecting more rain over the weekend. Just an another reminder that from bloom to 4-5 weeks after bloom is the critical period for downy mildew, black rot, and powdery mildew infection on clusters, and a…
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Black Rot
Quick reminder about black rot
I noticed that some of our 'Cheloir' vines are in trace bloom and also it has quite a bit of black rot. As I suspected, the cold rains we received were long enough for pathogens beyond Phomopsis to be able to infect vines. If you have not seen black rot lesions on leaves…
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Risk events
More on Phomopsis and other disease concerns
Well, it looks like we will see more rains coming in next week or so. Sounds like a typical start of the season for VA vineyards, doesn't it? Since most of vines have 2-10 inches of shoots, our main focus will still be Phomopsis , especially if your vineyard(s) experienced P…
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Frost injury
Disease management after frost events...
Several growers contacted me recently to discuss about disease management after recent frost events. Here are my take on it. 1) If you have some damages on your shoots/buds. As usual, you work with the growth of the vine, but not with the calendar dates. If you have lost a lots …
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Weather
It's tempting, but it's not the time to use pruning shears, yet.
Please see the message below from Dr. Sara Spayd, who is an extension viticulture specialist at NCSU. The information is probably more applicable to people in the southern VA, but we have not really seen cold temperature in the northern VA either. While we can enjoy outdoor act…
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Disease management
Pre-harvest disease management considerations
Now the season is wrapping up, and one of questions I get often is “when to spray what to protect your crop at the last stretch”. Unfortunately (as with everything else), my answer to the question is “it depends.” But it won’t help anybody, so, let’s go o…
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Disease management
For this Saturday's and next week's rain events
Since we are expecting heavy rain event on Saturday, plus about to be done with the critical time for cluster infection by downy mildew, powdery mildew, and black rot (which last 4-5 weeks after bloom), I received a several emails about the application timing. As with other tim…
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Risk events
Warm and wet weekend
Winchester area received a series of rain over the weekend, and it looks like we may see more coming in the next few days. There were three days of low and moderate Phomopsis infection risk events over the weekend. Also, humid and warm nights can promote development of downy m…
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Risk events
Low Phomopsis risk
Two days of intermittent rain brought a low infection risk event for Phomopsis. Also, these spring rain events can be precursor events for both downy and powdery mildew. As noted in the previous posts, keep protecting young shoots from these pathogens. At this point, you can …
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Weather
Dews and humidity in the past few days
We have not received precipitation since the 21st, but every night since then has been humid. Dews that formed 3-4 AM stayed until 9-10 AM in some days. Once again, these conditions favors downy mildew spore development. If your vines are covered with a previous application, …
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Weather
Potential disease events coming up
Looks like we will rains throughout the week. Our chardonnay vines are about 1-2 inches shoot length, and we have been spraying mancozeb and sulfur this morning to provide protection against Phomopsis (+powdery mildew, sulfur at this time of the season is more like an insurance…
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