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Genoa City, WI | As a poster above mentioned, there really isn't any reason to apply N to soybeans unless you need the space for manure disposal. Which a lot of hog operations need. What makes me mad is the people claiming that 'soybeans don't need N'. They do, a lot of it. Soybeans will use N available to them in the soil before fixing their own, but it doesn't seem to lead to any appeciable yield increase, and I wouldn't recommend actually spending any money on N fertilizer for beans. Foliar feeding just before bloom using a product like Awaken which has a bit of N in it, along with potash, zinc, and some other micronutrients does seem to lead to yield increases, but I think that's more to do with the zinc and micronutrient package than it does with the N content.
As for #2, the idea that soybeans actually provide an N credit to corn is actually a fallacy. Dr. Fred Below out of the University of Illinois gave a presentation on this at a Syngenta event, recently...I'll try and find the presentation notes, as a five minute Google search didn't turn up anything useable.
Not sure about your third question, I don't have any experience doing anything like that. | |
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Illegal to spread manure on soys in Iowa???
