Space rows 8 inches apart. Adjust planting rates accordingly. Some Chinese radishes can weigh 100 lbs. A soil test is the most accurate guide to fertilizer requirements. The following recommendations are general guidelines.
Care is needed to guard against excessive top growth.
Excessive N is particularly bad during periods of warm, wet weather. Buildup of soil N during the season results in progressively larger tops, so N applications should be reduced as the season progresses. Add P and K as indicated below. Divide this among several applications, applying two thirds of the total during the last half of the growth period. Adjust N rates and irrigation as necessary to maintain vigorous, uniform growth.