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At the Missouri State Fruit Experiment Station

Ningxia grape and wine students complete practicum at Mountain Grove

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Ten students from Ningxia University completed their practicum at the Mountain Grove Campus today. Activities included shoot positioning grapevines in the Genomics vineyard under the direction of Susanne Howard, training young Catawba vines, recording grape phenology, collecting disease and insect samples in the vineyard and looking at the problems under the microscope to verify identification, and measuring grape canopy density using point quadrat analysis.

Japanese beetles were eating leaves and were difficult to work around.
Japanese beetles were eating leaves and were difficult to work around.
Grape developmental stages were recorded.
Grape developmental stages were recorded.
After the point quadrat data was recorded, we did the calculations to develop a table that compared the grape canopies. The Foundation vineyard where the measurements were taken was planted in 2014.
After the point quadrat data was recorded, we did the calculations to develop a table that compared the grape canopies. The Foundation vineyard where the measurements were taken was planted in 2014.

 

Results from the canopy measurements taken July 2, 2019 in the Foundation Vineyard

Cultivar Leaf Layer Number %Gaps % internal leaves % internal cluster
Cayuga White 1.3 8% 13% 0
Chambourcin 1.36 10% 4% 3%
Chardonel 1.32 8% 3% 0
Norton 2.34 8% 29% 0
Traminette 1.94 8% 20.6% 0
Vidal Blanc 1.12 8% 1.8% 4.3%
Vignoles 1.56 16% 17.9% 0
IDEAL CANOPY 1.0 – 1.5 or less 20 – 40% < 10% < 40%