Friday, July 3, 2015

Armyworms in small grains

from Dr. Ian MacRae, UMN Entomologist, NWROC - Crookston

Folks,

We are receiving calls regarding armyworms in small grains in NW MN.

At this time they are small larvae (1/2"-3/4" long) and feeding in the lower foliage.  Scout for armyworms at grassy margins of the fields, low, weedy areas in fields or in lodged grain; populations are more likely to develop in these areas first.  Armyworms prefer the edges of leaves first and are messy, wasteful eaters.  They generally retreat during the day under soil and plant residue on the ground and feed more often beginning at dusk, it’s easier to scout for armyworm damage than the armyworms themselves.  Look for leaves that have been notched/cut, partially eaten leaf material on the ground, and small round pellets (armyworm frass, i.e. poop) near the base of the plants.

Thursday, July 2, 2015

Iron Deficiency Chlorosis Refresher by Dr. David Franzen, NDSU Extension Soil Specialist

Following the significant rains of the past month/weeks, yellow soybeans are appearing across the region. So, rather than an entomologist like myself reviewing Iron Deficiency Chlorosis (IDC) for you, I have provided a write-up from Dr. Dave Franzen, NDSU Extension Soil Specialist, who does a much better job summarizing the topic than I could.

Phillip Glogoza

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Source:   NDSU Crop and Pest Report Newsletter
                Issue #9                                 July 2, 2015 
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Growers and crop consultants in the Red River Valley are well acquainted with iron deficiency chlorosis (IDC) through years of experience. Not everyone in the Valley (few, really) follow the best advice in dealing with it, but many growers have made great strides in the past 20 years in being able to live with it. A fully explained narrative of the causes of IDC in soybean is available in the soybean fertility circular available at:


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When I moved the Cropping Issues in Northwest Minnesota on-line newsletter to the blog format, I have sought the best way to deliver updates to interested readers in a way that is efficient, quick and not too annoying. I have suggested using RSS feeds, subscribing to automatic updates (Atom), and my e-mailing a compilation of recent posts into a Table of contents with links. Each has had weaknesses in my opinion.

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Thanks,

Phil

Wednesday, July 1, 2015

Post-Anthesis Foliar N Applications to Boost Grain Protein in HRSW.

Interest in improving grain protein in hard red spring wheat (HRSW) with in-season applications of nitrogen (N) fertilizer is on everyone mind, since protein premiums and discounts are rumored to be even greater this year than last. 

A "Cliff Notes" summary of foliar feeding of N immediately after anthesis can be found here.  The original Minnesota Crop News article, published in 2006 and reprinted in 2014, explaining the practice in more detail can be found here.

information provided by Jochum Wiersma