By Dave Nanda
Cover
crops may be a biological 'bug' killer
Northern
corn leaf blight and gray leaf spot damage and insects may be reduced by cover
crops, even in corn-soybean rotations.
Published on: Aug 18, 2015
While scouting corn fields in
southeastern Indiana during the last three years, I've noticed fewer disease
lesions of northern corn leaf blight and gray leaf spot in fields following
cover crops. That could prove to be a major, underemphasized benefit. Disease
lesions were more prevalent even on fields where corn was grown two years ago
in a corn-soybean rotation when no cover crop was used.
I scouted corn fields with NCLB
and GLS where cover crops weren't used. Less than 20 miles away, I had a hard
time finding disease lesions on hybrids with exactly the same genetics – where
cover crops were used.
These fungal disease spores
remain viable for years. Cover crop residue seems to............
To Read More, Follow the link
below:
Sustainable ag cover crops may be biological bug killer
http://farmprogress.com/story-sustainable-agriculture-cover-crops-may-biological-bug-killer-8-131134
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