Anhydrous isn't common here, so the only way I've seen it applied is with shanks that cut everything up to inject high rates maybe not even annually.

So how would farmers familiar with anhydrous use "A box that makes 330lbs of ammonia a day"? Treat an acre a day? Apply a 1/300th rate and do 300 applications a year? Maintain a high-pressure 100,000lb tank of ammonia slowly being drip-filled until they need it all in fall? Buy 50 sea-cans and leave them shut off for 51 weeks a year?