Volume
2 Issue
1 May 17, 2005
Soybean
Rust: If you’ve been growing wheat,
you’ve been managing its ‘cousins’
Asian soybean rust (caused by Phakopsora pachyrhizi)
has made quite a name for itself across U.S. soybean
producing areas since November of 2004. After being
discovered attacking soybean and other plant species in
nine southern states, the disease is now ‘larger than
life’.
Brown
Root Rot in Alfalfa Identified in Northwest Minnesota
Brown Root Rot (BRR) was first described in North
America on yellow sweetclover (Melilotus) and alfalfa in
Canada in 1933. It can be a serious disease of sweetclover
in Canada. Brown root rot is caused by a cold-loving
fungus, Phoma sclerotioides.
Soybean: Could “Imbibitional Chilling” result
in
reduced plant populations?
One potential effect of planting soybean into cold soils is
the uptake of cold water which may damage cotyledonary and axis tissues.
Look-alike
Winter Annuals
Scentless chamomile, flixweed and tansy mustard all have
finely divided pinnately compound leaves. Superficially,
these plants appear the same but paying attention to
characteristics of the leaves makes separation of these
three plants from each other and from others relatively
simple.
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