Anyone spray their own chemicals on their dove fields? I'm fixing to plant about an acre and my local farmer's co-op is giving me the run-around on spraying, so I may do it myself. I know the pre-emergent chemicals are Spartan and Dual Magnum, but what about liquid nitrogen? I believe my local co-op uses nitrogen in the mix, but I can't seem to find any information about application rates and mixing. Can I mix it with the herbicides? What is the general application rate for nitrogen? I've seen 20-0-0 liquid fertilizer. Is that what I should use?