As you can see from attached 3rd pic, we don't have any rocks. Originally planter had seed containers double size then it has now. Containers can accept seed up to 2 acres. That works for us, as we don't have bigger pieces of soil. We lowered it approx 8" due to slopes, and easier fertilizer filling. Each box can accept about 30 kg (65 lbs) of fertilizer.
Add weight is usuall necessary to close planted rows, and not allways.
Yes, we use that planter only for corn, and on pic is corn planting. Distance between rows is 70cm (28in). This is common distance here, and all picker and corn heads are set up for it.
Here nobody do NO TILL planting, so I don't know what equippment is necessary for that procedure.
We plow in autumn, up to now disk in spring and till.
This year we start to using tiller instead of disk, and will se results. Seems that tiller better cover residues, and not cause planter clodging.
I'm open to any suggestion to improve our way of working /forums/images/graemlins/wink.gif