Corn fungicide efficacy ratings
The Corn Disease Working Group has prepared an updated table of efficacy ratings for corn fungicides.
This table only provides efficacy ratings for diseases. It does not rank fungicides for physiological “plant health” effects.
Diseases of primary concern to us in Kentucky would include gray leaf spot and, sometimes, Northern leaf blight. In selected fields in some years, southern rust may justify a fungicide application under Kentucky conditions, but in most fields, levels of southern rust are so low that routine fungicide application is difficult to justify.
It would be very uncommon for the other diseases listed to pose yield-impacting threats under Kentucky conditions.
This table is a “work in progress,” so efficacy ratings are subject to change, should ongoing research indicate that changes are justifiable. In the meantime, these ratings may be useful to corn producers.
- Farmland price outlook in 2014 and beyond
- Climate change to cut South Asia's growth 9% by 2100
- Tumbling livestock quotes led ag commodites lower Wednesday
- As risk of drought rises, Australian farmers struggle to invest
- Soybean aphids make an unusual appearance
- Livestock futures led most ag markets lower Wednesday morning
- Suspected Bt corn rootworm resistance in Pennsylvania
- No El Niño in 2014? Drought-weary California in trouble
- BioNitrogen to build second fertilizer plant in Texas
- Commentary: Setting the record straight on 'Waters of the U.S.'
- Soybean aphid numbers on the rise
- Agricultural associations respond to government shutdown