9. Crop Rotation â benefits and limitations Inflexible â intercropping, catch cropping or mixed cropping do not fit well Planning the rotation also enables planning succession Personal taste is vital on a small scale â the grower might like brassicas but not carrots. One crop can benefit the next in the rotation â nitrogen fixing legumes; potatoes suppress weeds Most pests and diseases are mobile or have long persistence Minimises plant problems â pests, diseases and deficiencies Limitations Benefits