The aim of this research was to study the effect of brown seaweed extract in combination with chemical fertilizer on the growth of Chinese kale. The study consisted of 2 experiments. The first experiment studied the effect of seaweed extract on the growth of Chinese kale in laboratory conditions.
The pot experiment was conducted by using CRD which consisted of 7 treatments with 3 replications. The treatments were as follows: T1: water (control), T2: seaweed extract at 10%, T3: seaweed extract at 20%, T4: seaweed extract at 30%, T5: seaweed extract at 40%, T6: seaweed extract at 50%, and T7: seaweed extract at 60%. Root length, height and fresh weight were measured at the age of 7 days. The second experiment studied the effect of brown seaweed extract in combination with chemical fertilizer on the growth of Chinese kale in a pot experiment and was conducted by using CRD which consisted of 8 treatments with 3 replications. The treatments were as follows: T1: water (control), T2: chemical fertilizer of 15-15-15 at 1%, T3: seaweed extract at 1%, T4: seaweed extract at 2%, T5: seaweed extract at 3%, T6: seaweed extract at 1% with 15-15-15 at 1%, T7: seaweed extract at 2% with 15-15-15 at 1%, and T8: seaweed extract at 3% with 15-15-15 at 1%. The height, stem circumference, leaf greenness and leaf number were measured at 38, 45 and 52 days after transplanting (DAT). The fresh weight, dry weight and concentration of N, P and K of Chinese kale were collected at harvest which was at 53 DAT.
สารสกัดสาหร่ายทะเลสีน้ำตาล, ปุ๋ยเคมี, คะน้า
Brown seaweed extract, Chemical fertilizer, Chinese kale
