I have about a Three-acre lawn, wide open. I have become obsessed with keeping it looking its best. I applied Broad Leaf treatment earlier this spring as usual and have things cleaned up pretty good. I have notice that as the summer goes on I have a few new weeds appearing. My question is this. Can I tank mix my broad leaf spray with liquid nitrogen (28)? If so, what is the recommended tank mix using my 25 gal.sprayer? (Liquid 28/H2O) Im thinking that the 28 will deepen the green, and besides I have easy access to it. I applied a slow release high nitrogen fertilizer about 4-6 weeks ago, but want more green. My lawn is 50% Blue Grass, 25% Rye Grass, 25% Creeping Red Fescue, Mowed at 3.75 I use Triplet Broad Leaf Herb. by Riverdale. If Im crazy, just tell me so. Thanks!