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Field Evaluation of Contans for Sclerotinia Control

The research results posted below are from trials conducted at the NDSU Carrington Research Extension Center.

Evaluation of the application rate and application timing of Contans; Carrington, ND (2012):  Contans reduced both the viability and vigor of sclerotia, fall applications of Contans were more effective than spring applications, and Contans performed equivalently at 1 lb/ac and 2 lbs/ac.  The results suggest that Contans may be a useful tool for degrading sclerotia of Sclerotinia sclerotiorum and reducing Sclerotinia disease pressure.

   User-friendly summary of key results (PDF)     Full technical report (PDF)   

Evaluation of spring application timing of Contans; Carrington, ND (2012):  Contans applications made in the spring sharply reduced the number of apothecia produced per sclerotium but had only a modest impact on the viability of sclerotia.  Contans performed similarlly irrespective of when it was applied in the spring; applications made 2 days prior to planting soybeans performed similarly to applications made 38 days prior to planting soybeans.

   User-friendly summary of key results (PDF)  Full technical report (PDF) 

Evaluation of incorporation methods of Contans; Carrington, ND (2012):  Under the conditions tested in this trial (sclerotia primarily on the soil surface at the time of Contans application and moist soils at the time of Contans application) manual incorporation of Contans (by harrowing to 1.5 inches), water incorporation (with 1 inch of water), and no incorporation performed similarly.  Different results may be obtained when sclerotia are evenly distributed in the soil profile.

   User-friendly summary of key results (PDF)    Full technical report (PDF) 


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