The Effect of Organic Fertilizer Application and Calcium Chloride Foliar Spray on Certain Growth Traits and Flowering Duration of Freesia Plant

Abstract

This study investigates the individual and interactive effects of organic fertilizers and foliar application of calcium chloride (CaCl₂) on the growth performance, physiological attributes, and postharvest behavior of Freesia spp. grown under semi-arid conditions. A randomized complete block design (RCBD) was used with three replications, including combinations of three levels of organic fertilizers and foliar calcium chloride. The results demonstrated that calcium chloride significantly enhanced leaf area, chlorophyll content, fresh corm weight, and flowering duration. The interaction between calcium chloride and humic acid proved particularly effective in improving dry matter accumulation, carbohydrate content, and water balance in leaves. Moreover, humic acid and seaweed extracts contributed to improved postharvest longevity through enhanced nutrient uptake, increased chlorophyll and sugar content, and delay in senescence processes. These findings suggest that integrating biostimulants with calcium chloride application is a viable strategy for improving both the physiological quality and commercial shelf life of ornamental freesia flowers.