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Fusarium and Soft Rot

Disease Watch: Fusarium Seed Piece Decay, Fusarium Dry Rot

Fusarium is the most common fungus responsible for seed-piece decay and dry rot. Although Fusarium is found in most soils, infected seed tubers are the most important sources of inoculum. Planting infected seed results in poor stands and serious economic losses. Soft rot bacteria often invade tubers with dry rot, which causes the seed to rot very quickly. Identification External lesions are sunken and shriveled with concentric wrinkles. Cracks often form in…

Potato field with PED

Feds Earmark $2.3 Million for PED Research

The Canadian government is giving the Canadian Horticultural Council $2.3 million for research on managing Potato Early Dying (PED) disease, Canadian Minister of Agriculture and Agri-food Marie-Claude Bibeau says in an announcement at the Canadian Horticultural Council AGM today in Ottawa on March 11. The research work is meant to provide potato growers with the knowledge, tools and technologies they need to manage PED. As part of the project the Canadian Horticulture…

Potato plants growing in a field

New Research Highlights Drop in New Brunswick PVY levels

Potato Virus Y (PVY) levels in the New Brunswick potato industry have dropped dramatically in the last decade following the instituting of strict regulatory limits on PVY in seed lots and through careful in-field management by growers of this aphid-spread disease, Potatoes New Brunswick says in a news release. Average PVY level in all tested potato seed lots harvested in 2009 was 11.8 per cent — a decade later in 2019 it…

P.E.I. Farmers Fight Back Against Late Blight With Ag Tech

To cut down on costs and make their operations more efficient Prince Edward Island potato farmers have started using precision agriculture technology to prevent late blight, according to a news release from the Prince Edward Island Potato Board. Farmers usually use fungicides throughout the growing season to protect from late blight which can cause millions of dollars in crop losses. Many P.E.I. farmers though have started using precision agriculture technology like localized…

Potato field with PED

Research Roundup: Potato Early Dying Complex

POTATO EARLY DYING COMPLEX (PED) is one of the most economically devastating diseases Canadian potato growers face each year, and incidence has been on the rise in fields across the country. With few registered chemicals available, an integrated management approach is the best means of control.  Early dying in potato occurs when potato plants fail to reach full maturity. As its name suggests, early dying is a complex issue due to a…

Potato plants in a row in a field

BASF Launches Cevya Fungicide in Canada

 BASF introduces Cevya fungicide featuring the new Revysol fungicide active ingredient (AI) which is now registered in Canada*. Cevya fungicide offers fast and continuous control of key diseases in fruits and vegetables including apples, potatoes and sugar beets.  “Cevya fungicide is a systematic fungicide providing preventative and post infection control of key diseases for growers challenged with resistance and seeking to maximize their yields. The fungicide controls biotypes that may have developed…

Potato plants growing in a field

GM Potato Trials Point to Blight-Resistant Crops of the Future

A genetically modified potato with improved tuber quality and resistance to the devastating disease late blight has progressed successfully through the latest stage of trials. The field trials follow successful lab experiments to modify Maris Piper potatoes with late blight resistance genes from wild relatives of potato called Solanum americanum and Solanum venturii. To improve tuber quality, the modified Maris Piper lines also have genes switched off – or “silenced” – to…

Potato Virus Y is the Most Serious Threat to Potato — Some Strains More than Others

By American Phytopathological Society Potato virus Y (PVY) is the most serious problem facing the potato industry in the United States and is the main cause for rejection of seed potato lots. The virus affects potatoes in two ways: It reduces the yield of potato tubers by 70-80% and also negatively affects the quality of the remaining tubers due to necrotic reactions. PVY encompasses a complex network of strains with a range…

Ontario Crop Production Update Oct. 11

Sunny, balmy weather this week allowed growers to make lots of progress with the harvest.  Many growers have finished digging. According to Mark VanOostrum, 80 per cent of the chipping crop has been dug.  The size profile is better than expected, and the quality is very good.  Rainfall was below average in June, July and August in the Alliston area, which resulted in poor crops in non-irrigated fields. I visited P &…

Driving Out Blight With Dual Control

Combining methods of disease control rather than relying on a single resistance strategy can extend the durability of crops by many years, confirms computer modelling that draws on classical population genetics theory. The finding comes from assessing the spread and virulence of the pathogen responsible for late blight of potato, Phytophthora infestans. The pathogen, which caused the Great Irish Famine in the mid-nineteenth century and led to the new science of plant…

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