News
Blightline July 26, 2013
Current recommendations: Late blight has not been reported in North Dakota, Minnesota or Manitoba. The cool weather has resulted in morning dews that favor late blight infection, but late blight severity values still remain relatively low. The non-irrigated stations that have reached the late blight threshold severity value of 15 are: Eldred, Humboldt, Perley, Rolla and Sabin. The irrigated stations that have reached the late blight threshold value of 15 are: Beach, Hofflund, Inkster, Karlsruhe, Leonard, Linton, Michigan, Oakes and Robinson. Growers should be ready to apply the first protectant fungicide when late blight threshold severity value of 15 occurs, just prior to row closure, or if late blight is found in your area, whichever occurs first. Thank you for using the NDSU Potato Blightline.
Aphid Alert for Week Ending July 21
This season looks to have significant potential vector activity. Complete weekly and cumulative seasonal results can be found at: aphidalert.blogspot.com
Aphid Alert for Week Ending July 5
Early aphid populations in small grains and soybeans indicates this may well be an aphid year! Vigilant scouting and management is very important this season!
MN Area II Potato Growers Field Day July 16, 2013
The Minnesota Area II Potato Growers Field Day will be held on July 16, 2013 at the Sand Plains Research Farm in Becker, MN. The Field Day will begin at 5pm and a dinner will be served after the field demonstrations.
Aphid Alert for week ending June 28
Here's the catch for the Trapping Period ending June 28, 2013 from Ian MacRae. In addition, on Friday, July 05, a colony of soybean aphids were found in Crookston. This colony is no more than 4 days old. These populations may indicate 2013 will become an aphid year. Vigilant scouting for and management of aphids is advised.
Physiological Age of Seed Potato
The 2011 growing year was late with late emergence and later readings in the winter test. The 2012 growing season was exceptionally early in North Dakota. There was an early planting and an early harvest. The physiological age of the seed starts when the tubers are being formed. It is influenced by variety, temperature, day length and stress etc.
Physiological Potato Seed Age Can Cause Emergence Problems
Growing conditions last year included warmer than normal temperatures and less precipitation, which increased the bruising of potatoes during harvest. These stresses increased the physiological age of potato seed. When planting potatoes, use certified seed that does not have long sprouts, sprout tubers or second growth, and/or is soft or dehydrated.
Late Blight Information For 2013
Here are some links for late blight information 2013. The North Dakota Agriculture Weather Service (NDAWN) has a nice website setup that calculates late blight severity values. The Blightline phone number for many states can be found here. And other information for growers, consultants, and others involved in potato production. This information can also be found on the left-side column of the Potato Extension webpage.
Focus on Potato Presentation: Effect of Glyphosate on Potatoes
Summary: This presentation will assist growers, consultants, and other practitioners involved in all regions of the potato industry to better understand and identify the effects of glyphosate in potatoes and how it can be managed. The presentation provides a short background on glyphosate, describes injury symptoms of glyphosate in potatoes, and details symptoms of glyphosate residues that remain in seed through storage and are planted the following year. Strategies to manage glyphosate in potato are discussed.
The Economic Commission for Europe (UNECE) to Provide a New Pest and Disease Guide
The “Specialized Section on Standardization of Seed Potatoes” of the Economic Commission for Europe, (UNECE) held its 41st session in Geneva, March 11-13 March 2013. Seed certification officials of Austria, Belgium, Denmark, Finland, France, Italy, Netherlands, Russian Federation, Spain, Sweden, Switzerland, United Kingdom of Great Britain and Northern Ireland, and United States of America attended the meeting as well as a representative of the European Union. The funding for the certification official from the US is from the US Potato Board on request from the Seed Certification and Disease Management Sub-Committee of the National Potato Council.
2013 International Crop Expo
The potato educational meetings of the International Crop Expo in Grand Forks, North Dakota held on February 20th and 21st. This article contains a summary of the various talks given by the National Potato Council, United States Potato Board, United Potato Growers of America, the potato industry, and NDSU and U of M scientists.
Effect of Glyphosate on Potatoes
A new NDSU Extension publication describing the effect of glyphosate on potatoes. This publication includes many pictures and descriptions to help growers, industry, and those associated with potato production to identify the effects of glyphosate in potato and in potato seed with glyphosate residues.
MN and ND Potato Seed Directories - 2012
The Minnesota and North Dakota potato seed directories have information about the potato cultivars or selection, acres planted, and the growers. These directories and seed directories from other states and Canada can be found on the navigation panel on the left under "Certified Seed" or at http://www.ag.ndsu.edu/potatoextension/certified-seed.
International Crop Expo Potato Presentations
The International Crop Expo was held February 20th and 21st , 2013 at the Aleus Center in Grand Forks. This contains selected reports from both days, made available by the presenters.
NPPGA Research Reporting Conference Presentations
Selected reports from the NPPGA Research Reporting Conference are available. Included are presentations from both NDSU and U of M potato researchers. Topics cover glyphsoate and potatoes, potato breeding updates, nitrogen management and acrylamide content, aphids and beetles.
Potato Rotation Restrictions for North Dakota
Herbicide carryover in soil can affect potato planting in many fields. This table gives plant back restrictions for North Dakota. Please see the NDSU Weed Control Guide for more information on herbicide carryover in other crops (http://www.ag.ndsu.edu/weeds/weed-control-guides/nd-weed-control-guide-1).
International Crop Expo Potato Program
The International Crop Expo will be held February 20th and 21st at the Aleus Center in Grand Forks. The show floor is once again sold out, making it one of the biggest ag shows in the valley. Keynote speaker will be Michele Payn-Knoper at 1:00 p.m.on Wednesday. The topic will be "Celebrating Agriculture... from the farm gate to the consumer plate." For a complete list of events and times, including bean and small grains programming, log onto www.cropexpo.com. The following is the potato programming schedule for the International Crop Expo.
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