who found that
soil and tillage tool including the shank have a greater impact on the
movement of lateral straw than that on longitudinal straw. Crop residues
may be incorporated partially or completely into the soil depending
onmethods of cultivation used (Ball and Robertson, 1990; Christian
and Bacon, 1991). Deep incorporations may reduce possible yield depressions,
but they slow down cultivation and require more time,
labor and energy costs (Chamen and Cope, 1994).