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| They backfill the mains with a D4 dozer. On the submains & laterals they have a 3 pt tool bar with 2 large covering discs that do the backfilling. Usually we have the tile installed in the fall and then in the spring we come back in with a soil finisher & work the lines down. The lines settle quite a bit over winter & they will also settle even more during the summer not enough to do any damage to equipment, about like driving over a small pot hole in a gravel road. On this field we'll probably run our Dominator over the lines in the spring then come back & work the whole field with it. Normally don't like to use the Dominator in the spring as our ground tends to work chunky when worked deep but hopefully the tile will help that. After the Dominator we will probably work it a couple times with a CIH 330 Turbo Till ahead of the planter.
Our problem is the opposite of your. Our ground is mostly Sable & Ipava loams which are poorly drained, especially the Sable. Underneath the black dirt is yellow clay & in some areas a blue clay beneath that.Tiling is essential to get top yields. This is a 68 ac field that we are having grid tiled. Laterals are 4", part of the field is on 50' sppacing & part is on 40'. In the lowest area they came back in & split the 50s so that the laterals are on 35' spacings. Last yr we planted part of it twice & still ended up with some drowned out spots. In a "normall" year this is a very productive field for this area. Even as wet as this year was this field made over 200 bpa dry corn.
The day after the 12" main was installed, when they tapped in for the first submain the 1" was running 2/3rds full of water. Hooking up laterals they're having to work in " of water in the bottom of the trench. The backside of the field has a 8" main going across it. They were plowing 4" laterals across the top of it & then once the lateral was in coming back & hooking it up. By that time, in less than 1/2 hr, the laterals were running 1/3 - 1/2 full
Edited by boog 2/18/2012 11:40
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a few tile pics
