This study was tried to examine the efficacy of apples that had grown with agro󰠏chemical alternatives in an apple orchard. The chlorophyll content of apple leaves was a little higher in the plot of Charcoal powder, Chitosan, and Peat moss treatment among the other agro󰠏chemical alternatives. On the contrary, the sugar content of apple fruits was higher in the plot of Amino acids, and Green ion calcium treatment, but there was quite a difference among them. Vitamin C content of apple fruits was high at the cell division period. It became lower at the hypertrophic period and then got higher again at the harvest. Vitamin C content was the highest in the chemical fertilizer plot as well. In an apple orchard where agro󰠏chemical alternatives were used only, the commercial grade of ripened apples had declined by 25%, compared to those in customary cultivation. The commercial grade of ripened apples with agricultural chemicals using fertilizers and pesticides was over 90% with over 250g of its weight in the plot of Charcoal powder, Amino acids, and Vitamin C treatment. Therefore, we guessed the environment󰠏friendly method of cultivation in an apple orchard shall be established by reducing the usage of agricultural chemicals gradually and increasing the agro󰠏chemical alternatives at the same time.

ABSTRACT
Ⅰ. 서언
Ⅱ. 재료 및 방법
Ⅲ. 결과 및 고찰
Ⅳ. 적요
참고문헌

• 남기웅
• 김승환