Missouri State University
What's happening in the field?
At the Missouri State Fruit Experiment Station

Grape phenology and GDD accumulation

GDD base 50 accumulation since April 1 = 411.   http://agebb.missouri.edu/weather/reports/gddTable.asp

Phenology stages according to the Modified E-L system http://door.uwex.edu/files/2010/10/ModifiedEichhornLorennzsystem.pdf

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Wine Appreciation Class of 2017

Dr. Karl Wilker and I held our last Wine Appreciation for Consumers class yesterday evening with our food and wine pairing. The students paired 8 wines with foods including maple bacon wrapped kielbasa, sausage and cheese stuffed mushrooms, fruity bruschetta on crostini, buffalo chicken dip, strawberries, cheese, mini cheesecakes, pineapple salsa with tortilla chips and brownie bites.

Class of 2017
Best of luck to our Class of 2017

Here are some pics from the food line. Click on a photo to enlarge it.

And here are some pics from the class. Click on a photo to enlarge it.

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Grape phenology and GDD accumulation

GDD base 50 accumulation since April 1 = 299.   http://agebb.missouri.edu/weather/reports/gddTable.asp

Phenology stages according to the Modified E-L system http://door.uwex.edu/files/2010/10/ModifiedEichhornLorennzsystem.pdf

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Peach Thinning

Even with the late frost and cold temperatures the peach trees still needed to be thinned this year.  We decided not to mechanically thin them since about 30% of the buds had damage.  We waited until they set fruit and are manually thinning them to one peach every 6-8 inches.  Thinning immature fruit will allow the remaining fruit to develop into higher quality fruit.  Less crowding of the fruit also allows more sunlight which will result in improved color and flavor.  Proper thinning can also reduce the amount of limb breakage due to the weight of the fruit.  Fruit trees have a natural fruit drop usually called “June Drop”.  During May to June, the flowers and fruits will naturally thin themselves.  Blossoms that were not pollinated will die and fall off, while small immature fruits often naturally drop.   Even with “June Drop”, Stone fruits (Peaches, Apricots, Nectarines, Cherries and Plums etc.) generally require additional thinning.

 

Photos to be posted later…

 

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A bit of hail injury and phomopsis on grapes

I saw a few instances of phomopsis on grapes and hope to get the fungicide sprays on this week. It has rained quite a bit and has made it difficult to apply pesticides. I also saw hail damage on most of the grapes, but nothing too serious. This was most likely from the major storm on Saturday, April 29.

Hail injury on Catawba leaf.
Hail injury on Catawba leaf.
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Raspberries rotated into high tunnel May 1

The raspberries were rotated into the high tunnel on May 1, earlier than last year, but they are further in development compared to last year and we see flower buds on the earlier cultivars. There was hail and high winds with lots of rain on Saturday. We saw unprecedented flooding in Mountain Grove and the surrounding areas. The raspberries were outdoors during the storms and sustained some hail damage as well as a few broken shoots, but nothing looks too serious.

The raspberries were rotated into the high tunnel on Monday, May 1, 2017. The irrigation system was repaired and installed and the trellis was set up.
The raspberries were rotated into the high tunnel on Monday, May 1, 2017. The irrigation system was repaired and installed and the trellis was set up.
Raspberry leaves sustained some injury from hail.
Raspberry leaves sustained some injury from hail.
We have also seen a few broken shoots from high winds.
We have also seen a few broken shoots from high winds.
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Grape phenology and GDD accumulation

GDD base 50 accumulation since April 1 = 253.   http://agebb.missouri.edu/weather/reports/gddTable.asp

Phenology stages according to the Modified E-L system http://door.uwex.edu/files/2010/10/ModifiedEichhornLorennzsystem.pdf

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Grape phenology and GDD accumulation

GDD base 50 accumulation since April 1 = 207.   http://agebb.missouri.edu/weather/reports/gddTable.asp

Phenology stages according to the Modified E-L system http://door.uwex.edu/files/2010/10/ModifiedEichhornLorennzsystem.pdf

Posted in Grapes, Phenology | Leave a comment