Abstract
Destructive analysis was used to estimate the half-monthly nitrogen content and related growth parameters of drip-fertigated spring cucumber.
Three fertilizing treatments were compared. The amount of nitrogen applied half-monthly varied independently, but the total amount was same. There was little difference in the growth and yield of cucumber among nitrogen application patterns, which suggests that soil has a buffering capacity on cucumber yield even if the amount of nitrogen fertilizer changed. Destructive analysis including three all treatments found a significant correlation between nitrogen content of cucumber plant and the number of increased leaves (absorbed nitrogen (g/m2/14 days)=increased leaves (no./m2/14 days)×0.0441+2.189). This relationship will lead to reduce nitrogen application through counting of leaves twice a month.
