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

Soon to harvest onions

Simpsons Family Farm just north of Mountain Grove began their onion harvest today. They have an outdoor test plot of Alyssa Craig onions and we have this variety planted in the high tunnel. Both are about the same level of development, but Simpsons onions are larger! Deb French advised that we pick onions when the tops fall over – which should be happening in the next week or so.

Alyssa Craig onions at Simpson's Family Farm.
Alyssa Craig onions at Simpson’s Family Farm.
Alyssa Craig onions in high tunnel at the State Fruit Experiment Station.
Alyssa Craig onions in high tunnel at the State Fruit Experiment Station.
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MSU Students and faculty present information at ASEV

Dr. Chin-Feng Hwang and five of his students attended the 65th American Society of Enology and Viticulture (ASEV) National Conference June 25-26 in Austin, Texas. Dr. Hwang was invited to present a talk entitled “Optimization of Vitis aestivalis-derived ‘Norton’ Grape Breeding Using Molecular Genetic and Genomic Approaches” and served as a moderator for a “Vineyard Practices” session at the conference.Dr. Karl Wilker and I also attended the conference.

Back from left: Dr. Hwang, Dr. Andy Walker, Logan Duncan, Bridgette Williams. Front from left: Surya Sapkota, Pradya, Mia Mann.
Back from left: Dr. Hwang, Dr. Andy Walker, Logan Duncan and Bridgette Williams. Front from left: Surya Sapkota, Pragya Adhikari and Mia Mann.

Three of the students presented posters on their research and participated in the flash talk where students gave timed, three minute presentations on their research.

Surya discusses his poster entitled
Surya discusses his poster entitled “Fungal Diseases in Grapevine: Phenotypic Assays on a Vitis aestivalis-derived ‘Norton’ Based Population”
Fungal Diseases in Grapevine: Phenotypic Assays on a Vitis aestivalis-derived ‘Norton’ Based Population
Surya presenting his flash talk.

 

  • Pradya talks about her poster entitled
    Pragya talks about her poster entitled “Identification of True Hybrids of Vitis aestivalis-derived Norton-Based Populations Using Molecular Markers”
Pradya presenting her flash talk.
Pragya presenting her flash talk.
Mia discussing her poster entitled
Mia discussing her poster entitled “Are Norton and Cynthiana Synonyms? – A Genome-Wide Comparative Assessment Using Microsatellite Markers”
Mia presenting her flash talk.
Mia presenting her flash talk.
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Grape phenology and GDD accumulation

GDD base 50 accumulated since April 1 = 1304
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

Vivant was defruited due to low vine size and will not be included in the phenology at from this point until leaf fall.

 

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Grape phenology and GDD accumulation

GDD base 50 accumulated since April 1 = 1148
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

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
Posted in Grapes | Leave a comment

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

Posted in Grapes, Phenology | Leave a comment

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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