Crop rotation ... Using legumes in rotation began to decline when synthetic nitrogen was introduced in the 1940's. Making rotations shorter (not including perennials, pastures, green manures and ...

an organic crop rotation was consistently more profitable and carried less risk of low returns than conventional corn and soybean production, even when organic prime premiums were cut by half.

The purpose of crop rotation is to help maintain the balance of nutrients, organic matter, and microorganisms necessary for healthy soil. Of these three, the invisible world of soil-dwelling micro ...