IMPACTS OF DIFFERENT CONCENTRATIONS AND TIMES OF APPLICATION OF CHITOSAN ON SWEET BASIL (Ocimum basilicum L.)

Abstract

Sweet basil is one of the popular herbs that contains various types of antioxidants and is widely used in pharmaceutical, food and cosmetic industries. Although sweet basil is considered as an easy and fast-growing herb, yet, the production is still insufficient to cater to the rising demand. Thus, the aim of this study is to increase biomass of sweet basil by the application of chitosan at different timing. The experiment was arranged in Randomized Complete Block Design with four replications. Plants were treated with different concentrations of chitosan (0, 2, 4 and 6 ml/L) at three different times of application (20, 40 and 20+40 days after transplanting), and kept for 60 days under open field. Data was analysed by using Statistical Analysis Software (version 9.4), Analysis of Variance was used and means were separated using Least Significant Differences. Based on the findings, all treated plants showed greater value compared to the control treatment. Among the treatments, it was found that plants treated with 4 ml/L at 20 days after transplanting performed the best where the plants reached highest stem fresh weight (44.59 g/plant), root dry weight (2.83 g/plant), leaf fresh weight (54.28 g/plant) and leaf dry weight (8.80 g/plant). The yield was higher than control treatment at 43.45% and 59.71% based on its leaf fresh weight and leaf dry weight, respectively. Therefore, it is recommended for sweet basil to be treated with 4 ml/L at 20 days after transplanting. Besides, more details study on compound profiling and its fraction from sweet basil leaf extract can be conducted in the future.

Effect of Brassinolide and Chitosan on Growth and Chemical Composition of Aglaonema commutatum plant

“…Foliar spray with chitosan increased total dry weight of summer squash plants as compared to the untreated plant [16]. Also sweet basil plants reached highest leaf dry weight when treated with chitosan compared to the control [26]. Brassinolide and chitosan affected significantly leaf area.…”

“…Also foliar applications of chitosan increased root dry weight of strawberry [24]. Sweet basil [26], and Serapias vomeracea [31] plants showed greater root dry weight when treated with chitosan compared to the control treatment. Chitosan treatments induced root formation [30].…”