What's happening in the field? http://blogs.missouristate.edu/fruitexperimentstation At the Missouri State Fruit Experiment Station Mon, 21 May 2012 21:40:06 +0000 en hourly 1 http://wordpress.org/?v=3.3.2 Grape phenology and GDD accumulation http://blogs.missouristate.edu/fruitexperimentstation/2012/05/21/grape-phenology-and-gdd-accumulation-31/ http://blogs.missouristate.edu/fruitexperimentstation/2012/05/21/grape-phenology-and-gdd-accumulation-31/#comments Mon, 21 May 2012 21:40:06 +0000 Marilyn Odneal http://blogs.missouristate.edu/fruitexperimentstation/?p=2122 GDD base 50 accumulated since April 1 = +629 (+244 departure from normal) at Mountain Grove 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

Photos and stages will be uploaded shortly

]]> http://blogs.missouristate.edu/fruitexperimentstation/2012/05/21/grape-phenology-and-gdd-accumulation-31/feed/ 0 Grape phenology and GDD accumulation http://blogs.missouristate.edu/fruitexperimentstation/2012/05/14/grape-phenology-and-gdd-accumulation-30/ http://blogs.missouristate.edu/fruitexperimentstation/2012/05/14/grape-phenology-and-gdd-accumulation-30/#comments Mon, 14 May 2012 19:44:02 +0000 Marilyn Odneal http://blogs.missouristate.edu/fruitexperimentstation/?p=2104 GDD base 50 accumulated since April 1 = +503 (+213 departure from normal) at Mountain Grove 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

N Traminette E-L Stage 26-27 N Concord E-L Stage 29-31 N Sunbelt E-L Stage 31 N Norton E-L Stage 23 MVEC Chambourcin E-L Stage 26-27 MVEC Valvin Muscat E-L Stage 26-27 W Catawba E-L Stage 29-31 R Vignoles E-L Stage 26-29 R Cayuga White E-L Stage 29-31 R Vidal Blanc E-L Stage 26-29 R Seyval Blanc E-L Stage 29-31 R Catawba E-L Stage 31 D Chardonel E-L Stage 26-27 D Vivant E-L Stage 26-29 ]]> http://blogs.missouristate.edu/fruitexperimentstation/2012/05/14/grape-phenology-and-gdd-accumulation-30/feed/ 0 Grape fertilizer application http://blogs.missouristate.edu/fruitexperimentstation/2012/05/10/grape-fertilizer-application/ http://blogs.missouristate.edu/fruitexperimentstation/2012/05/10/grape-fertilizer-application/#comments Thu, 10 May 2012 15:17:02 +0000 Marilyn Odneal http://blogs.missouristate.edu/fruitexperimentstation/?p=2102 We just fertilized the Delaware vines that were planted earlier with 1/2 cup of 10-0-10 per plant. The second split of 30 pounds nitrogen was just put on the grapes (during bloom) as well.

]]> http://blogs.missouristate.edu/fruitexperimentstation/2012/05/10/grape-fertilizer-application/feed/ 0 Last class for wine appreciation http://blogs.missouristate.edu/fruitexperimentstation/2012/05/10/last-class-for-wine-appreciation/ http://blogs.missouristate.edu/fruitexperimentstation/2012/05/10/last-class-for-wine-appreciation/#comments Thu, 10 May 2012 14:54:46 +0000 Marilyn Odneal http://blogs.missouristate.edu/fruitexperimentstation/?p=2099 We had a wine and food pairing exercise for the last Wine Appreciation for Consumers class.

Eighty-four students completed the Wine Appreciation Course this semester
Eighty-four students completed the Wine Appreciation Course this semester
]]> http://blogs.missouristate.edu/fruitexperimentstation/2012/05/10/last-class-for-wine-appreciation/feed/ 0 Grape phenology and GDD accumulation http://blogs.missouristate.edu/fruitexperimentstation/2012/05/07/grape-phenology-and-gdd-accumulation-29/ http://blogs.missouristate.edu/fruitexperimentstation/2012/05/07/grape-phenology-and-gdd-accumulation-29/#comments Mon, 07 May 2012 14:26:26 +0000 Marilyn Odneal http://blogs.missouristate.edu/fruitexperimentstation/?p=2081 GDD base 50 accumulated since April 1 = +421 (+221 departure from normal) at Mountain Grove 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

N Traminette E-L Stage 21 N Concord E-L Stage 26-29 N Sunbelt E-L Stage 27-29 N Norton E-L Stage 18-19 MVEC Chambourcin E-L Stage 25-26 MVEC Valvin Muscat E-L Stage 19-20 W Catawba E-L Stage 25-26 R Vignoles E-L Stage 21-26 R Cayuga White E-L Stage 26-29 R Vidal Blanc E-L Stage 18-25 R Seyval Blanc E-L Stage 26 R Catawba E-L Stage 25-29 D Chardonel E-L Stage 20-21 D Vivant E-L Stage 19-26 ]]> http://blogs.missouristate.edu/fruitexperimentstation/2012/05/07/grape-phenology-and-gdd-accumulation-29/feed/ 0 Traps for grape berry moth http://blogs.missouristate.edu/fruitexperimentstation/2012/05/02/traps-for-grape-berry-moth/ http://blogs.missouristate.edu/fruitexperimentstation/2012/05/02/traps-for-grape-berry-moth/#comments Wed, 02 May 2012 19:10:12 +0000 Marilyn Odneal http://blogs.missouristate.edu/fruitexperimentstation/?p=2076 Dr. Maciej Pszczolkowski, who studies insect pests of fruit crops, is putting up grape berry moth traps in the vineyards in order to monitor the insect population. He put the first trap in the Norton variety in the Research Vineyard on Monday, and put additional traps out in the Vignoles, West Catawba and North Vineyard today.

Dr. Pszczolkowski puts up a grape berry moth trap in the Traminette grapes in the North Vineyard
Dr. Pszczolkowski puts up a grape berry moth trap in the Traminette grapes in the North Vineyard

 

The pheromone attractant is placed in middle of a grid lined sticky board
The pheromone attractant is placed in middle of a grid lined sticky board
]]> http://blogs.missouristate.edu/fruitexperimentstation/2012/05/02/traps-for-grape-berry-moth/feed/ 0 Leafrollers in the high tunnel raspberries again http://blogs.missouristate.edu/fruitexperimentstation/2012/04/30/leafrollers-in-the-high-tunnel-raspberries-again/ http://blogs.missouristate.edu/fruitexperimentstation/2012/04/30/leafrollers-in-the-high-tunnel-raspberries-again/#comments Mon, 30 Apr 2012 21:34:59 +0000 Marilyn Odneal http://blogs.missouristate.edu/fruitexperimentstation/?p=2073 We are seeing a few leafrollers in the high tunnel raspberries again this year. We also see a few in the adjacent raspberries outside the tunnel. We just picked them off last year and unless they become more of a problem, we will do the same this year.

Leafroller in the rasbperry leaf
Leafroller in the rasbperry leaf
]]> http://blogs.missouristate.edu/fruitexperimentstation/2012/04/30/leafrollers-in-the-high-tunnel-raspberries-again/feed/ 0 Clusterless Catawbas http://blogs.missouristate.edu/fruitexperimentstation/2012/04/30/clusterless-catawbas/ http://blogs.missouristate.edu/fruitexperimentstation/2012/04/30/clusterless-catawbas/#comments Mon, 30 Apr 2012 21:32:38 +0000 Marilyn Odneal http://blogs.missouristate.edu/fruitexperimentstation/?p=2070 Last year we skipped several vines that had no fruit when we were havesting the West Catawba. This year we noticed several vines with no clusters. We did have some Chambourcin vines that did not have clusters either and we found that they were propagated from the same vine (which had been removed so we were not sure if it was fruitless or not). Anyway, we are tagging these vines as we shoot thin so we can see if they are fruitless again next year. If so, we will plan to replace them.

Several vines in the West Catawba have no clusters at all
Several vines in the West Catawba have no clusters at all
]]> http://blogs.missouristate.edu/fruitexperimentstation/2012/04/30/clusterless-catawbas/feed/ 0 Grape phenology and GDD accumulation http://blogs.missouristate.edu/fruitexperimentstation/2012/04/30/grape-phenology-and-gdd-accumulation-28/ http://blogs.missouristate.edu/fruitexperimentstation/2012/04/30/grape-phenology-and-gdd-accumulation-28/#comments Mon, 30 Apr 2012 21:28:46 +0000 Marilyn Odneal http://blogs.missouristate.edu/fruitexperimentstation/?p=2054 GDD base 50 accumulated since April 1 = +267 (+132 departure from normal) at Mountain Grove 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

N Traminette E-L Stage 14-17 N Concord E-L Stage 21 N Sunbelt E-L Stage 23 N Norton E-L Stage 15-16 MVEC Chambourcin E-L Stage 15-16 MVEC Valvin Muscat E-L Stage 14-15 W Catawba E-L Stage 19-20 R Vignoles E-L Stage 19 R Cayuga White E-L Stage 19-20 R Vidal Blanc E-L Stage 17 R Seyval Blanc E-L Stage 19 R Catawba E-L Stage 19 D Chardonel E-L Stage 17-19 D Vivant E-L Stage 15-17 ]]> http://blogs.missouristate.edu/fruitexperimentstation/2012/04/30/grape-phenology-and-gdd-accumulation-28/feed/ 0 Concord problem http://blogs.missouristate.edu/fruitexperimentstation/2012/04/25/eutypa-on-concord/ http://blogs.missouristate.edu/fruitexperimentstation/2012/04/25/eutypa-on-concord/#comments Wed, 25 Apr 2012 18:18:12 +0000 Marilyn Odneal http://blogs.missouristate.edu/fruitexperimentstation/?p=2030 I noticed that vines in our row of Concords looked unusual when I recorded phenology last week. At first I thought it might be a freeze injury, but we really only got close to freezing here and other vines in the vicinity looked fine.

I also thought it might be Eutypa dieback. Our yield for Concord was drastically reduced last year (the reference vines in 2009 yielded 16.6 pounds per vine; 13.7 pounds per vine in 2012; and only 3.5 pounds per vine in 2011). At the time, I thought the low yield in 2011 was due to cool and wet conditions during bloom. Concord is susceptible to Eutypa, however, we are not seeing just one side of the plant affected, but the entire row.  If it were cold injury, it may be that the Concord was further along in development than the Sunbelt and Norton nearby. We will continue to keep our eye on it.

Symptoms on Concord on April 16, 2012
Symptoms on Concord on April 16, 2012
Another photo of symptoms
Another photo of symptoms

 

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