How do ground and aerial application of fungicides compare?

Most of the farmers in the central and northern part of Brazil are using aerial applications, so approximately 80% to 90% of their acreage, and they get good results out of it, but it's really important they get good coverage and good penetration, and they are using minimum five gallons an acre down there to get that, and the ground, mostly for the smaller farmers in the southern part of Brazil, of course also very good results on that. Based on the number in Iowa, I think 95% of our acres will probably be done with the ground rigs, so that's what we need to focus on. – Palle Pedersen