News
Identifying Herbicide Injury in Potato Production
In this article I will explain and show specifically what the responses of potato plants are to some common modes of action. Understanding what the mode of action is can help narrow down the type of herbicide and how it can affect plant and tuber growth. I discuss some common translocating herbicides I often observe when determining injury in potato plants and tubers. They are, ALS-inhibitors, growth regulators, and EPSP synthase inhibitor (glyphosate).
Blightline for 2019: Potato Blight App
Last year, the NDAWN Potato Blight app was launched to help potato growers have more accurate late blight and early blight notifications for individual fields. After some updates, we are excited to let you know that the NDAWN Potato Blight will be the key resource for late blight and early blight predictive models for the 2019 growing season. In addition to North Dakota, we expect this app to be available for Minnesota growers in 2019.
ND8068-5Russ 2018 Research Results
The breeding process for potatoes takes a long time, typically 10 to 15 years. However, after new varieties are released potato growers often do not understand how to best grow them because every potato variety responds differently. ND8068-5Russ responded well to high nitrogen rates, early in the season. Future studies should focus on higher nitrogen rates applied early in the growing season.
Tater Talk
We will be having a Tater Talk on April 4 at 10:30-12:00 at Jack and Jim's. This is an opportunity for potato growers to learn about and ask some questions prior to planting. Please come and bring your questions. Lunch will be provided.
2019 Pest Management Guides
The 2019 pest management guides are now available to download or download the NDSU Pest Management app for all the guides in one app for convenient use.
2018 Research Reports
The Minnesota Area II Potato Research and Promotion Council and the Northern Plains Potato Growers Association have provided the 2018 research reports. Reports include research completed on potato breeding, nutrient management, storage, entomology, pathology, and nematodes completed by researchers at North Dakota State University, University of Minnesota, and the USDA-ARS potato worksite.
Recognizing herbicide injury in potato
This presentation is from a talk I gave at the International Crop Expo on February 21, 2019. In this presentation herbicide injury in potato is discussed and shown from common modes of action. Herbicide injury can come from many sources and express in different ways, but other plant stresses can be misdiagnosed as herbicide injury. It's always important to sample tissue for confirmation of herbicide injury.
International Crop Expo - Potato schedule
The International Crop Expo schedule for the potato section
NPPGA Research Reporting Conference
2019 NPPGA Research Reporting Conference schedule
NDSU / UMN Potato Scout School
The NDSU / UMN International Potato Scout School will be held on February 21, 2019 from 12:30 to 5:00pm at the Alerus Center in Grand Forks, ND. This year training will be focused on management of pests. Our guest speaker, Dr. Nora Olsen, will discuss potato storage management.
Improving Potato Uniformity with Plant Growth Regulators - Poster
The application of plant growth regulators (PGRs), most commonly gibberellic acid (GA) has been commonly used to improve emergence and influence stem and tuber number. The challenge has been the treatment of GA has been frustrating because of various measurements and application styles for this very potent product. In this experiment we established a standard seed treatment with known rate applied in combinations of gibberellic acid, cytokinin (CK), indole-3-butyric acid (IBA) and naphthaleneacetic acid (NAA) to 10 potato cultivars in field studies performed in North Dakota. In some varieties, emergence, stem number and plant height were increased, while others did not respond to treatments. Additionally, some varieties experienced tuber elongation and a shift in the tuber profile, but rarely yield was increased. PGRs manipulate stem and tuber number and this can be used to improve tuber size profile for the desired use. PGR sensitivity it tied to variety and seed age.
Aphid Alert for August 25-31
With the season winding down, aphid numbers are definitely trending downwards, only 52 aphids, 38 of which were vector species were recovered from traps at 10 locations this week.
Blightline August 27, 2018
This will be the final regular NDSU Potato Blightline for 2018. Congratulations to all the potato industry in our region. No late blight was reported in ND, MN or MB during this growing season. Late blight has been reported in SE Michigan.
Aphid Alert Week of August 18-24
Aphid vector counts are still decreasing. This week we recovered a total of 133 aphids, 117 of which were vectors. We did, however, only have 10 sites reporting.
Blightline August 20, 2018
No late blight is reported in ND or MN or MB. Late blight is reported in commercial fields in Adams and Marquette counties in Wisconsin. Conditions remain not favorable for late blight the past few days. Continue to apply protectant fungicides on a seven-day schedule for irrigated fields and a 7 to 10 day schedule for non-irrigated fields. Scout fields for late blight until vine kill and harvest.
Aphid Alert week of August 11-17, 2018
Well, the aphid vector numbers are down a bit from last week - we caught approximately what we caught 2 weeks ago. We're still seeing high diversity in the species captured, recovering aphids from 12 different aphid species from 15 of the 16 sites reporting. Hoople (42), Sabin (33), Ada (29), Gully (22), and the site in Nebraska (26) led the counts in trap captures this week.
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