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

Breeding for a better squash

Logan Duncan is working with Dr. Hwang on a squash breeding project. He is making inter-specific crosses between different squash species and will evaluate the progeny as to fruit quality and heat, disease and insect resistance.

Logan is planting squash species to use in his breeding project.
Logan is planting squash species to use in his breeding project.
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Grape phenology and GDD accumulation

GDD base 50 accumulated since April 1 = 966
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

Fruit set on Chambourcin and Traminette was adversely affected by the weather during bloom.

 

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Spray damage on Catawba and Norton

We saw some damage from sulfur and boron sprays applied due to humid and overcast weather conditions for several days. Catawba showed symptoms of damage from boron and Norton showed symptoms of damage from boron and sulfur (Captan) application. Catawba is not listed as sensitive to sulfur. We hope to see the vines grow out of this problem.

Marginal necrosis on Catawba from boron spray.
Marginal necrosis on Catawba from boron spray.
Catawba leaf with boron spray injury.
Catawba leaf with boron spray injury.

 

Norton
Norton symptoms of boron and sulfur burn.
Close up of marginal burn
Close up of marginal burn on Norton.
Close up of damage on Norton
Close up of damage on Norton
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Grape phenology and GDD accumulation

GDD base 50 accumulated since April 1 = 841
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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Shoot positioning grapevines

Nathan Bock is shoot positioning the Sunbelt grapes on a high bilateral cordon system. We completed most of the necessary shoot thinning and are working on the first shoot positioning of the more vigorous grape cultivars including Norton and Catawba.

Nathan is shoot positioning Sunbelt grapevines.
Nathan is shoot positioning Sunbelt grapevines.
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Vineyard scouting

Nathan Bock is a UMC student working as a student intern at the Missouri State Fruit Experiment Station this summer. One of his responsibilities is to scout the vineyards for problems. Here are photos of what he found in the vineyards today.

Phylloxera on Traminette
Phylloxera on Traminette
Open phylloxera gall with creature inside
Open phylloxera gall with creature inside
Grape tumid gallmaker galls on stems and tendrils of Traminette
Grape tumid gallmaker galls on stems and tendrils of Traminette
Tumid galls on upperside of leaf
Tumid galls on upper side of leaf

 

Tumid galls on leaf underside
Tumid galls on leaf underside
Possible phomopsis leaf spot on Seyval Blanc
Phomopsis leaf spot on Seyval Blanc
Possible downy mildew on Catawba
Downy mildew on Catawba
Downy mildew on underside of leaf.
Downy mildew on underside of leaf.

 

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Grape phenology and GDD accumulation

GDD base 50 accumulated since April 1 = 686
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

Our Concord is in full bloom (50%) and I saw some open flowers on Delaware, Valvin Muscat, Sunbelt and Catawba. So begins grape flowering – we keep our fingers crossed for nice warm and dry weather for good pollination.

GDD base 50 accumulated since April 1 = 544
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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High tunnel raspberries and veggies

Today the Crimson Giant raspberry plugs came in from North American Plants. They were planted in the grow bags and complete the group of cultivars that were selected for the “High Tunnel Production Rotation of Primocane Bearing Raspberries in Grow Bags” project funded by a Specialty Crop Block Grant. Susanne Howard harvested vegetables today including the second harvest of Alcosa savoy type mini cabbage and the first harvest of Caraflex pointed mini cabbage. The vegetables will be removed after harvest and the raspberry grow bags will be rotated into the space.

The Crimson Giant raspberries were planted in grow bags today.
The Crimson Giant raspberries were planted in grow bags today.
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