|
Volume
4 Issue
9
July 17, 2007
Polk
County Soybean Variety Plot Tours
Wednesday July 25 - Fosston
Thursday July 26 - Crookston
Plot
tours will begin at 9:30 am, each day
Watch
for Variegated Cutworms in Sugar beets
Several weeks ago, alerts went out about watching for armyworm and
variegated cutworms due to large numbers of moths captured in the
region. We now have received reports of
variegated cutworm in sugar
beet. We've seen this before, back in August 2001, when both
variegated and black cutworm were a late season (July/August)
problem in beets.
Soybean Aphid Update
A few reports of increasing numbers, maybe even a few
justifiable treatments in smaller fields where there is significant,
wooded habitat nearby. It is time to begin
scouting more earnestly as we approach the time when populations in
normal years begin to increase.
Field
Cages: How they may influence soybean aphid populations
Here is an excellent example of the importance of predation in
delaying the development of soybean aphid populations.
Soybean Aphid Speed Scouting: An Overview
It has been several years now since this field scouting method
for making soybean aphid treatment decisions was introduced. The
procedure was called “Speed Scouting” by the
researchers who developed it.
Use Caution
When Harvesting and Feeding Ditch Hay
Harvesting ditch hay (grass and legumes growing
alongside the roadways) is a common practice in Minnesota.
However, there have been several cases of significant soybean
injury as a result of manure applications from livestock fed ditch
hay that was treated with picloram or clopyralid.
Poisonous
Plants That May be of Concern in Ditch Hay
There have also been a number of livestock health issues correlating
to poisonous or harmful plants that commonly grow in ditches that
are harvested for hay.
< previous issue next issue >
|
