New Labels, Label Additions

Tachigaren Registered on Sugarbeet

Tachigaren fungicide was registered on August 4. This is a new
chemistry, previously not available in the United States. 
Tachigaren has been used on sugarbeet for many years in Europe
and Japan. At low rates it provides control of Pythium seedling
disease and at high rates it provides early season control of
Aphanomyces seedling disease and root rot. It does not provide
full season control, however. Specialty varieties that have
Aphanomyces tolerance do not express this tolerance in the
seedling stage. The combination of Tachigaren and a tolerant
variety is most likely to provide season-long suppression in
areas where Aphanomyces is a common problem. 

Aphanomyces is favored by warm and wet soils. It has been a
severe problem in southern Minnesota and in some fields in the
southern Red River Valley. The prevalence of Aphanomyces has been
greater this year in the Red River Valley than in most other
years.

Tachigaren treated sugarbeet seed will be available for the 1996
growing season as pelleted seed.



Blue Viking Star Glow Powder Registered for Use at Potato
Vine-Kill

A supplemental label was issued for this brand of copper 
sulfate. It is registered for use with Diquat at vine-kill to
enhance vine desiccation and suppress late blight. It is to be
applied at the rate of 10 lb/A in 10-100 gal water for ground
equipment or 5-10 gal water with aerial equipment. Additional
applications can be made with Diquat if needed within 7 days of
harvest. Blue Viking may be applied alone until harvest to
suppress late blight. 

Caution: Copper sulfate is corrosive to equipment.