Both of these troubles may be avoided by cutting up the vines with a disk harrow or other implement before covering them.
An occasional cutting-up of the sod with a disk harrow does much good.
Soils which need the disk harrow should generally be gone over again with some shallower working tool to smooth the surface.
The greatest difficulty in running a disk harrow or cultivator is to keep the boxings in good trim.
A cut-away or disk harrow should be used to mix the lime with the soil before any moisture causes it to cake.
As soon as the oats were off lots 10 and 11, they were ploughed and crossed with the disk harrow.
There is temptation to carry the substitution of the disk harrow for the breaking-plow too far.