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New and emerging
potato cultivars produce higher yields and quality than existing
cultivars used in commercial potato production. However, the new
cultivars are being grown under cultural practices for the old cultivars.
Potato research at the University of Idaho Parma Research and Extension
Center focuses on optimizing fertilizer recommendations for the
best yield and quality of the new cultivars.
At-plant fungicides and insecticides are also tested to determine
their efficacy against many of the diseases and insects that infect/feed
on potatoes. Fungicide tests focus on Rhizoctonia, black dot, and
seed piece decay control. Insecticide tests focus on the longevity
of at-plant products to control Colorado Potato Beetle and the Green
Peach Aphid.
Onion research
at the Parma R & E Center focuses on reducing onion storage
rot and the use of biofumigants to enhance onion production and
minimize soil pathogens. Losses following onion storage average
20% in the Treasure Valley, and most can be attributed to environmental
conditions, but there are factors that influence how the onion bulb
will respond to the environment and long-term storage. Our goal
is to understand the factors and reduce storage losses. Biofumigants
such as canola, mustard or oil radish can be planted following a
small grain crop and then worked into the soil in the fall. Anticipated
benefits include increased water infiltration and holding capacity,
decrease in soil pathogens, weeds and nematodes.
For more information
contact: Bradley D. Geary
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