Potato Extension
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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