Minnesota Farmer


Soybean aphids
August 6, 2010, 5:40 am
Filed under: Farm, Soybeans | Tags: , , , ,

The soybean aphids have not been much of a problem until this week.  Now the population has exploded.  It’s time to spray for aphids.

Aphids can be frustrating creatures.  They seem to prefer the youngest plants and those plants that are already under stress from some other source.  They seem to appear overnight, and the population can go from just a few per plant to a thousand or more in just a day or so.

We run the risk of spraying too early and then having to re-spray too close to harvest.  Luckily this year the aphids waited until now and spraying with a pesticide with a 21 day residual will hold them off for just enough of the year.  Once we get to the end of August the beans have set their pods and the weather is getting cooler so an aphid infestation is not a problem.  Just another challenge in farming.

Michael

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