Suggestions for efficient phosphorus with corn, sugarbeet and soybean
University of Minnesota Extension soil fertility specialist Daniel Kaiser talks with the Red River Farm Network about options for efficient use of phosphorus with corn, sugarbeet and soybean.
TRANSCRIPT
Red River Farm Network: This is the soil fertility minute presented by the Agricultural Fertilizer Research and Education Council. We’re joined by Daniel Kaiser, professor and Extension soil fertility specialist with the University of Minnesota.
Daniel Kaiser: With corn and sugar beets, there’s always a starter fertilizer option which could have some replacement value where, you know, we’ve seen, especially with sugar beet, three gallons of 10-34-0, replacing about 60 units P2O5.
Corn, you might be able to do some of the same thing, you know, maybe five gallon 10-34-0 and replacing about four units P2O5.
So the other thing is then just to look at what crops. I mean, if you’ve been fertilizing soybean consistently, unless the phosphorus soil test, the Olsen is below seven, I really don’t see a whole lot of advantage for direct application, so it may be just, better just to try to concentrate on small grains corn, you know, sugar beet, some of those, crops that might get a little bit more benefit from the phosphorus application.
Red River Farm Network: AFREC is a farmer led program advancing soil fertility research. Find out more at mnsoilfertility.com.