set out my markers to 30 inch row and left center row empty on my planter. Fungicide/insecticide cost around $30 and total micro after 2 passes was $10 Looking around that pass added at least 10 bushel and the micros added another 5-10. A lot of SDS but our fields never had it show up. Lots of tile and we are not suffering from compaction. Also try to plant resistant varieties. too much risk not to.