Approximately 6 weeks after planting (5–6-leaf stage),the remainder of N needed for the fertilization treatments was applied. Standard grade sulfate of ammonia (21-0-0) and muriate of potash (0-0-62) fertilizers (Growers Fertilizer Corporation, Lake Alfred, FL) were uniformly applied (side dressed) by hand to each of the rows. Given the relatively low soil test results for potassium (Table 1), it was applied separately but at the same time in a 1:1 ratio (N/K) for each of the plots. Following fertilizer application, the plots were irrigated (approx. 10 mm) to minimize volatilization.