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Andy Robinson

Potato Extension Agronomist

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Potato Extension

Potato Tuber Second Growth

Potato Tuber Second Growth

Potato tubers are the result of the plant genetics and the environmental conditions in which they are grown. Potato varieties are selected carefully for tubers that have desirable appearance to maximize sales and reduce waste. However, some years can cause more environmental stress than others, resulting in tuber secondary growth. Secondary growth often manifests as heat sprouts, tuber chaining and tuber malformations. This physiological disorder decreases yield and quality of the tubers in the field.

Potato Tuber Second Growth - Read More…

NDSU Potato Breeding Program Handout

NDSU Potato Breeding Program Handout

This is a handout from Dr. Susie Thompson's Potato Breeding Program.

NDSU Potato Breeding Program Handout - Read More…

Spud Scoop, September 12, 2020

Spud Scoop, September 12, 2020

Welcome to Spud Scoop for the week ending on September 12, 2020. No late blight has been reported in ND, MN and MB. This week no late blight spores were found in the spore traps. Aphid vectors were down at all locations this week with cooler temperatures slowing down reproduction and movement. With multiple nights of freezing temperatures, potato vines in many areas have died. Because of this we will be ending the spore trapping network and this newsletter for this growing season. The cooler temperatures have provided favorable harvest conditions. Ideal tuber pulp temperature for harvest is 45 to 65 F. Yesterday was 9/11, and as Dr. Ian MacRae said “let’s take a moment to remember those brave individuals who run towards danger in order to safeguard us all.” Have a happy and safe harvest!

Spud Scoop, September 12, 2020 - Read More…

Spud Scoop, September 7

Spud Scoop, September 7

Welcome to Spud Scoop for the week ending on September 5, 2020. No late blight has been reported in ND, MN and MB. Congratulations to everyone in the potato industry in our area. Stay diligent with fungicide protection and scouting fields as harvest approaches. This week no late blight spores were found in the spore traps. Aphid numbers were down this week buy they’re still flying. Green peach aphids are more dispersed being found in 10 of 19 sites. Good luck with harvest as it gets into full swing.

Spud Scoop, September 7 - Read More…

Spud Scoop August 29, 2020

Spud Scoop August 29, 2020

Welcome to Spud Scoop for the week ending on August 29, 2020. No late blight has been reported in ND, MN and MB. Congratulations to everyone in the potato industry in our area. Stay diligent with fungicide protection and scouting fields as harvest approaches. This week no late blight spores were found in the spore traps. The spore trapping network is winding down as harvest is beginning.

Spud Scoop August 29, 2020 - Read More…

NPPGA Field Day 2020

The NPPGA Potato Field day, originally scheduled for August 27, 2020 was changed to a virtual field day. In these videos, researchers will provide information about their research work in potatoes. Hope you enjoy these presentations.

NPPGA Field Day 2020 - Read More…

Spud Scoop August 22, 2020

Spud Scoop August 22, 2020

Welcome to Spud Scoop for the week ending on August 22, 2020. No late blight has been found in ND, MN or MB. Late blight spores were found in Cavalier, ND and in Little Falls and Rice, MN. Stay diligent with fungicide protection and scouting fields. We had another big week for aphid vector numbers, with very similar numbers to last week. A total of 287 vectors were recovered from 15 sites reporting. In fact, with this week's catch, we've caught up with 2019 and are pretty much at the same levels, but with different levels at different sites.

Spud Scoop August 22, 2020 - Read More…

Spud Scoop August 14, 2020

Spud Scoop August 14, 2020

Hi and welcome to Spud Scoop! Late blight was confirmed in Wisconsin and genotyped as US-23. No late blight spores were found in the traps this week. Aphid numbers took an even bigger jump this week with the vector numbers and the PVY Vector Risk Index tripling over last week. A number of efficient vectors were found at most locations, including Green Peach Aphids being recovered from both the Crookston and Hoople traps.

Spud Scoop August 14, 2020 - Read More…

Spud Scoop August 7

Spud Scoop August 7

Hi and welcome to Spud Scoop this week. No late blight has been reported in potato fields, however weather conditions are favorable for late blight and late spores have been found in Lake Bronson, Oakes and Perham. Keep scouting for late blight. If you have any leaves, you’d like tested for late blight let Gary Secor or Andy Robinson know. Early blight is becoming more prevalent. Aphid numbers have doubled over last week, causing the PVY Vector Risk Index to more than double this week. The good news is PVY Risk Index values are less than half what they were at this time last year. This continues to be a low aphid year, but it only takes a few aphids to move inoculum around in a field. Harvest season is here. Our red and yellow-skinned potato trials are sizing up well. The favorable planting conditions and warm weather has encouraged rapid tuber growth. Some early russets were harvested this week including we harvested an early russet research potato trial. The value of herbicides, from one of our research plots can be seen below, you can see where herbicide treatment was and was not applied.

Spud Scoop August 7 - Read More…

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