News
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.
NPPGA Research Reporting Conference
The Northern Plains Potato Growers Association 2013 Research Reporting Conference will be held Tuesday, February 19 at the Alerus Center in Grand Forks. It is free and open to the public.The moderator will be North Dakota State University/University of Minnesota Potato Extension Agronomist Dr. Andy Robinson. The following is a schedule of the day's events.
Off-site Movement of 2,4-D and Dicamba in Soybean and Glyphosate in Potatoes
Learn about the effects of 2,4-D and dicamba drift in soybean! The presentation covers crop injury, yield loss, and predicting yield loss using crop injury ratings. It also covers the effects of glyphosate in potatoes. Contains pictures of the effects of glyphosate residues in seed potatoes planted the following year.
Strategies for Selecting the Best Performing Varieties
How to select the most stable and high yielding varieties. Yield trials, multi-year and multi-environment data.
When Selecting Seed, Consider Silver Scurf
Selection of potato seed is one of the first steps to a successful potato production to maximize yield potential. Identifying and purchasing high-quality seed will encourage vigorous growth and healthy plants. If a seed lot is suspected to have silver scurf the disease, tubers can be sent to a laboratory to confirm the presence of the disease. This is done by placing the tubers in a humid chamber for two to three weeks then assessing the tubers under a microscope. This article contains information and management tips on silver scurf.
Best of the Best in Wheat and Soybean Research
The North Dakota State University and the University of Minnesota Extension Services, along with MAWG, MWR&PC, MSR&PC, NDSC, NDGGA, and NDWC have joined together to present producers with current research information. In this day-long workshop, growers will have the opportunity to learn from researchers and extension specialists. These sessions are Free. Pre-registration is encouraged. To register call, (800) 242-6118, ext 3 or go onlineat www.smallgrains.org and click on Best of the Best link.
Identifying and Assessing Delayed Emergence and Reduced Yield from Glyphosate Residues in Seed Potato
Seed potato fields can unintentionally come into contact with glyphosate by physical drift, contamination of spraying equipment, inversions, or misapplication. Glyphosate translocates to the daughter tubers and can be stored there until planting the next spring. This results in delayed emergence when potato seed is planted the next growing season. Symptomology of potato clones with glyphosate residues may include erratic emergence, malformed leaves, multiple shoots from a single eye, and enlarged shoots.
Using the Web to Stay Informed—Potato Extension Style!
Technology has provided us immediate access to information, allowing us to research various topics, conduct business, make business decisions, and connect with friends and family. To provide easy and immediate access to information for those in the potato community, I have started a webpage (www.ag.ndsu.edu/potatoextension), Facebook page (www.facebook.com/potatoextension), Twitter account (www.twitter.com/spudology), LinkedIn account (www.linkedin.com/in/spudology), and Pinterest account (www.pinterest.com/spudology). I welcome questions or comments on any of these. Additionally, if you would like to receive emails there is an email signup on this webpage. Emails will be used to send out notifications of important information.
Documentation for Suspected Spray Drift
Herbicide drift to nontarget plants can cause damage sufficient to result in a significant monetary loss. Documentation of chemical damage is required if compensation for loss will be pursued. In addition, establish the source of drift and amount of loss caused by the damage. NDSU Extension publication WC-751.
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