Dig a spade width trench. Line the bottom half with compost. Cover with a little compost. Fill in the trench with sand. Begin to mulch the corn as it sprouts above ground level.
Corn seems to grow well if planted with beans.
Predator numbers seem to increase for both plants. Corn grows well with cucumbers, but for some reason the cucumbers fall victim to powdery mildew easier. The old Mexican companion planting method of corn and pumpkins suppresses weeds. The combination confuses pests. Cotton and sesame grow commercially with corn to attract predators to control budworm pest.