Potato Extension
Blightline June 1
As you all know, potato planting and emergence are ahead of normal and off to a good start. Most of the potato acreage is planted, and much of it is already emerge. The recent wet weather will favor late blight from infected seed, and also favor both bacterial seed decay and Rhizoctonia stem canker of the emerging sprouts. It is not too early to remind the potato community to prepare for late blight, and even though we did not have late blight in our area the past three years, infected seed could from other areas could act as a source of inoculum. The risk of late blight now is low, but continuing wet weather during the season will provide conditions favorable for late blight if inoculum is present. Severity values are beginning to acuclulate in northern and eastern ND due to the recent rains.
Dickeya: A Scottish, UK and European Perspective - Focus on Potato
Blackleg, a disease that has had little impact on potato production in North America over the years is showing worrying signs in recent times that it’s on the move. It’s a disease that has plagued potato production in Europe for decades and can be caused by a number of different bacteria Dickeya and Pectobacterium species. Potatoes producers up and down the East Coast are rightly concerned and this presentation should give practitioners and growers an overview of the European experience of the disease, update them on ongoing research and explain what the European authorities and industry are doing to combat the problem. By the end of this presentation, the practitioner should have a better understanding of the disease, the pathogens involved and current advice on disease management practice.
Integrated Late Blight Management - Focus on Potato
Late blight is a potentially destructive disease of potato and tomato crops worldwide. While the disease has been studied by many for over a century, changes within the Phytophthora infestans pathogen population have required further in depth investigation for management. From 2009 to the current, a group of newly identified genotypes/clonal lineages/strains of the pathogen were identified, with US-23 becoming most predominant in both tomato and potato production areas of the continental U.S. This presentation will offer new information on the characterization of US-23 and other newer clonal lineages as it pertains to pathogen persistence and management. Further, a process for integrated late blight management, established for Wisconsin, will be shared to aid practitioners in understanding critical concepts of the pathogen and fungicides to enhance overall disease management.
Irrigated Cultivar Trial 2015
As part of a North Dakota Specialty Crop Block grant we tested ten different cultivars for their agronomic performance. This trial was planted at the irrigated research site near Inkster, ND.
Understanding and Managing Blemish Problems in Fresh Market Potato
Blemishes are a big problem fresh market potato growers often face. They can cause 15% or more of potatoes to be culled or cause rejected loads. Smooth-skinned tubers in particular are especially vulnerable to blemishes because they are easily observed. This work evaluated blemishes on tubers from a survey of potatoes collected from potato growers, and evaluated the effects of fungicides on blemishes.
2016 NDSU Pest Management Guides Available
The 2016 NDSU Pest Management Guides are now available. These can be found under the "Pest Management Guides" link on the left side of the website or by clicking the link below. Or you can download the NDSU Pest Management App for Pest Management information.
Blemishes of Table Potatoes: Common Biotic Causes by Jacquie van der Waals, PhD
Potato tubers are affected by a number of blemishes, which can cause severe economic losses, in terms of rejection of seed batches, yield losses, downgrading of potatoes on the market, or rejection of processing potatoes. Despite the fact that many blemishes are merely cosmetic in nature, the demand by consumers for washed potatoes has exacerbated the problem of rejection of blemished tubers. Tuber blemishes are broadly classified as typical or atypical. Typical blemishes have known causes, for example pests, pathogens or specific abiotic factors; while the cause(s) of atypical blemishes have yet to be determined. Correct diagnosis of a tuber blemish is important in management of the disease and prevention of future occurrences of the blemish. This presentation covers the causal agents, symptoms and management of the most common typical tuber blemishes with biotic causes, and can serve as a guide for growers and others in the potato industry to help with identification of these blemishes.
National Fry Processor Trials
2015 Potato Cultivars tested at East Grand Forks, MN in 2015. This article was put together by the United States Potato Board
Minnesota Area II and NPPGA Research Reports
Potato research reports from research conducted in Minnesota and North Dakota by researchers at North Dakota State University and University of Minnesota. The research covers a variety of topics on potato production.
Minnesota Area II Potato Growers 25th Annual Educational Workshop
You are invited to attend the 25th Annual Potato Workshop on Tuesday, March 1st 2016. This workshop gives us the opportunity to get together, learn and share ideas. We feel this program will be useful to everyone in the potato industry. We hope to see you there.
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