The GRDC recently released a report on managing water repellent soil with different cultivation strategies. The image above shows Variation in soil water movement (blue dye) between cultivated (b and d) and no-till (a and c) non-wetting soil. The article explains how different forms of tillage, residue management, and inter-row versus on-row seeding can effect the water channeling ability of a soil.
The article can be found at the GRDC website, or in their GroundCover magazine