马铃薯缺陷和疾病

Potato Plant wilting due to Dickeya (Courtesy: Cornell University)
七月 17, 2016
Dickeya Blackleg: New Potato Disease Causing Major Impact
Dickeya blackleg, often just called Dickeya, is a new disease in the United States. It was severe in 2015 at least partly reflecting hotter weather than previous 2 years when the pathogen likely was present and is developing again in 2016.
From the archive
Plants infected with the original strain of PVY are difficult to see (pale center plant). However, the newer strains are virtually undetectable with the naked eye (Courtesy: Washington State University).
七月 13, 2016
New Potato Virus Y strains very difficult to detect with the naked eye
Several newly evolved strains of the disease known as potato virus Y, or PVY, can render potatoes unmarketable and reduce crop yield. What’s worse is the new viruses are particularly difficult to detect with the naked eye.
From the archive
Potato Aphids (Macrosiphum euphorbiae) alatae (insect form with wings) , apterae (wingless female form) and cast skins (Courtesy: Wikimedia)
七月 06, 2016
AUSVEG: Wasp warfare with avid aphid-eating parasites can help prevent pesticide resistance
With pesticide resistance rising in species of aphids which feed on potatoes and spread viruses, one of the best control options for growers battling these pests may be found in nature, free of charge: parasitic wasps.
From the archive
Three of Agrico's proprietary potato varieties with a high resistency against Phytophthora infestans: Carolus, Twinner and Alouette
七月 05, 2016
Extreme rainfall triggers first Phytophthora cases in the potato fields in The Netherlands
Every once in a while the potato disease Phytophthora crops up in the Netherlands, and this year is no exception. Especially potato farmers in the South of the Netherlands are worried.
From the archive
Potatoes ready for transport (Gujarat, India)
七月 05, 2016
To boost potato export, India considers establishment of 'pest-free zones'
Aiming to boost potato exports, the Indian government is considering identifying ‘pest-free zones’ for the staple in production clusters of the growing states like Uttar Pradesh and West Bengal.
From the archive
In the Red River Valley, 2016 is shaping up to be the year of the Colorado Potato Beetle (Leptinotarsa decemlineata).(Courtesy: @spudology / twitter)
七月 02, 2016
Colorado Potato Beetles are munching on in the Red River Valley
According to the University of Minnesota Extension 'Spudbug' Newsletter, it is shaping up to be a Colorado Potato Beetle (CPB) year in the Red River Valley.
From the archive
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Signing in for the annual potato field day at OSU Hermiston Agricultural Research and Extension Center
(Courtesy: OSU Hermiston Agricultural Research and Extension Center / Facebook)
六月 29, 2016
Searching for genes to make potatoes resistant to nematodes
Potato breeders at Oregon State University are working to identify the gene that makes certain potatoes resistant to nematodes, which could then be used to create new varieties.
From the archive
Islas Canarias ayudará agricultores con cosechas de papas afectadas por la polilla
六月 27, 2016
Islas Canarias ayudará agricultores con cosechas de papas afectadas por la polilla
Los agricultores de la zona de medianías de La Orotava cuyas cosechas de papas estén afectadas por la polilla guatemalteca, recibirán ayudas tanto del ayuntamiento de este municipio como del Cabildo de Tenerife.
From the archive
Potato and oat fields can be seen on the last day of planting on June 18 at Hemphill Farms in Presque Isle. The farm rotates fields between oats and potatoes. (Courtesy: Hemphill Farms / Bangor Daily News)
六月 27, 2016
Potato planting in Maine complete after winter dealing with Dickeya
Maine potato farmers have wrapped up planting and are hoping for a good year.
From the archive
[Potato Psyllid nymphs damage crops by feeding on foliage and by vectoring the bacterial pathogen Candidatus Liberibacter, resulting in the Zebra Chip disease (Courtesy : EPA)
六月 20, 2016
Biological control of Potato Psyllids by Parasitic Wasp approved by New Zealand Authority
The Environmental Protection Authority (EPA) of New Zealand has approved a type of parasitic wasp as a biological control agent to combat the tomato potato psyllid (a plant louse), which attacks tomatoes, potatoes, capsicums and tamarillos in the country.
From the archive
A potato field in Hassan, Karnataka. The pictures was taken mid July in 2009.
六月 18, 2016
Delayed monsoon spells trouble for potato growers in Hassan, Karnataka
Lack of rain has left potato growers of Hassan - a district in the Southern Indian state of Karnataka in distress.
From the archive
Robert Green at work on his farm in Bedeque, Prince Edward Island (P.E.I.)
六月 16, 2016
Potato Farming on Prince Edward Island: Trying Something New
For years, PEI potato farmer Robert Green has been growing barley and canola in rotation with potatoes. This season, he’s decided to try something new.
From the archive
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The webcast is developed by Amanda Gevens, Associate Professor and Extension Plant Pathologist and the University of Wisconsin–Madison
六月 16, 2016
‘Focus on Potato’ Webinar: Late Blight Management
Late blight is a potentially destructive disease of potato and tomato crops worldwide that can result in significant losses if detected too late, diagnosed incorrectly, or if not treated properly.
From the archive
Drones will fly over fields with their tanks filled with ladybirds, predatory mites or parasitic wasps and spread the insects precisely where pests are ravaging the crops.
六月 15, 2016
Research: Drones as delivery vehicle for biological control agents
The University of Southern Denmark is developing an ecodrone that will combat pests in completely new ways.
From the archive
Cyst on a potato root
六月 14, 2016
Potato parasite’s `toolkit’ revealed
An international group of researchers has detailed the genome sequence and inner workings of the yellow Potato Cyst Nematode (PCN), providing new insights into how it can be stopped.
From the archive
A million Irish died during the great famine in the country in the 1840s. The same number emigrated to the USA or other countries. The culprit was potato blight, which still plagues potato farmers today.
六月 10, 2016
The potato disease that changed the world
Potato blight changed Europe and America, and led to widespread deaths and mass emigration. And we’re not rid of it yet. But where did it come from?
From the archive
Nematodes are a microscopic worms that threaten potato production
六月 03, 2016
University of Idaho leads major research effort to reduce the threat of nematodes
The University of Idaho is leading a $3.2 million project to combat microscopic worms (nematodes) that threaten potato production.
From the archive
Blackleg symptoms in the potato plant and tuber.
五月 26, 2016
New ‘Focus on Potato’ Webcast Helps Potato Growers Minimize the Spread of Blackleg
Blackleg, caused by strains of soft rot bacteria known as Dickyea, has traditionally had little impact on North American potato production, but it now appears to be on the move throughout Europe and could increasingly threaten growers in the Eastern United States.
From the archive

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