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SE PA | Joel,
good example of what tillage radishes will do in taking up left over N. They are a tremendous scavenger of N. On your drilled plot the seeding rate was higher so they effectively got most all the N that was there. The 30" rows have not gotton to the point of getting all the N yet. I've seen this many times in seeding rate strips I've done in the same field. Thicker stands will start yellowing first. When I see this i know I'm minimizing N leaching potential over the winter. However, on the flip side, if soils are low in N to begin with, adding N will help the tillage radishes to maximize their genetic potential of deep rooting action. So, like any other crop it comes down to management and knowing what you are trying to accomplish. Wettness can also be a contributing factor and that may or may not be related to the N already being leached away. Do you concur? | |
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Our tillage radish crop so far
