Foliar applications of chitin nanofiber augment plant growth, yield, and postharvest quality of coriander (Coriandrum sativum L.).

Abstract

Coriander leaves are highly perishable and require abundant nitrogen for growth and yield. This study evaluated the effect of foliar application of chitin nanofibers on the plant growth, leaf yield, and postharvest leaf quality of coriander. The treatments consisted of control (no nitrogenous fertilizer), 13 g urea (as a recommended dose of nitrogen), 13 ml chitin nanofiber, 26 ml chitin nanofiber, and 39 ml chitin nanofiber. Urea was soil-mixed, and chitin nanofiber was sprayed at 15 and 30 days after emergence. Foliar application of 39 ml of chitin nanofiber resulted in similar plant height and leaf number to that of urea. Leaf yield was identical for 26 ml of chitin nanofiber and urea. A 39 ml of chitin nanofiber-treated leaf was fresher, tender, and had lower shrinkage than the control. Moreover, it increased the shelf life of coriander by 1.5 days compared to the control. Overall, 39 ml of chitin nanofiber promoted the growth and yield of coriander, while also maintaining postharvest quality, including shelf life extension. Therefore, we suggest 39 ml of chitin nanofiber for growing coriander and maintaining postharvest quality, including shelf life. However, we recommend further experiments to confirm the results.