Volume
5 Issue
8
July 8, 2008
Upcoming Red River On-Farm Yield Trials - Small Grains
A series of five plot tours to review the University of Minnesota’s
Red River On-Farm Yield Trials and Wheat Fungicide Research will be
held July 14 -21, 2008 at locations throughout the hart of
Minnesota’s wheat-growing region.
Northwest
Research and Outreach Center
Annual Field Day
Thursday
July 17
Registration at 8 a. m.
Additional, Upcoming Plot Tours
Soybean Plots -- Fosston --
July 30
Soybean, Corn, and Fertility Plots -- July 31 --
Crookston
Corn Fertility Plots -- August 1 -- Ogema
Tips to
Reduce Fertilizer Expenses this fall
In the last Issue, George Rehm referred to a conversation with a
farmer in WC Minnesota about fertilizer purchased this fall, the
price per pound of N will be somewhere between $0.53 and $0.64. To
save money on fertilizer without hurting yields, you can do a number
of things.
Ag
Calculators for Crop Input Decisions
While checking bookmarks for useful tools on the internet, the
following links were noted under the American Crystal Agronomy Tools
web site. Many of the tools they have provided are specific to
sugarbeets, but the Fertilizer calculator and
RoundUp calculator should be useful to all.
Additional
Tebuconazole Formulations
Registered for Wheat and Barley
Things have come a long way since January ‘08 when EPA let it be
known that tebuconazole would not likely receive a Section 18
exemption for this year. Since then, several changes have led to
tebuconazole receiving a Section 3 label for wheat and barley in
May. Now, additional tebuconazole formulations are receiving EPA
approval for supplemental labels allowing the use of other brands.
Watch for
Potato Leafhopper
Potato leafhoppers cause damage by piercing the stem and underside
of the leaf with its stylet and feeding on plant sap. As it feeds,
it injects phytotoxic saliva into the plant, which restricts the
flow of carbohydrates within the phloem, and causes the wedge-shaped
yellowing commonly called “hopper burn”.
Soybean Aphids Showing Up in Typical,
Early Hot Spots
Field scouting soybean fields across the region is turning up
soybean aphids in the fields. The populations are small, but some
infested plants, particularly on field margins, have some strong
colony development
(one large
momma aphid and 10 to 20 of her babies)
in plant terminals. These early
infestations are most likely to be found in smaller, well protected
fields where wooded border areas have buckthorn present.
Grasshoppers – Jumping onto the scene
Several locations in NW MN have reported grasshoppers. Surveys have
turned up a mixed bag of species, most of which are not usually
agriculturally damaging species but a couple of the species
typically thought of as agricultural pests have been recovered as
well.
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