유기질비료(채종유박과 구아노)의 시비가 첫물차 생육 및 품질에 미치는 영향

Effect of Organic Fertilizers(Sesame Oilseed Cake and Guano) Application on the Growth and Quality of the First Crop of Tea

This study was carried out to evaluate the effects of organic fertilizer on the growth and quality of the first crop of tea. Test plots were applied with a combination of organic fertilizers, spring fertilizer (sesame oilseed cake), and budding stage fertilizer (Guano) in February and April, and the results were compared with those of a non-treatment plot. Yield, number of new shoots, and weight of one bud were not significant amotg the treatments. However, the rate of banjhi shoot growth was clearly reduced as application time increased. Chlorophyll contents increased in April 12 days after the addition of budding stage fertilizer, which was 2 months after spring fertilizer was applied. In addition, usage of tea taste indicator compounds showed that total free amino acid and theanine contents linearly increased as application time increased, indicating that the combined application of budding stage fertilizer influenced the contents of chlorophyll and nitrogen compounds. Contribution of guano fertilizer resulted in increases in the contents of total free amino acids and theanine by 13.44 ± 4.01% and 11.81 ± 4.49%, respectively. Conclusively, this strongly suggests that Guano as budding stage fertilizer could be used as a tea taste indicator to increase the contents of total free amino acids and theanine by 10% or more.