Sebrina Shahniza, S.* and Sabrina, A. R.
Abstract
The selection of an appropriate nursery medium is crucial for optimising seedling growth and development in chilli (Capsicum annuum L.) This study evaluated the influence of peat blocks and peat moss on seedling growth dynamics under nursery conditions. A randomised complete block design (RCBD) with four replications was conducted at the Horticulture Research Centre, MARDI, Serdang, Malaysia. Growth parameters, including plant height, stem diameter, number of leaves, and leaf area, were assessed over 12 weeks after sowing (WAS). Results demonstrated that seedlings grown in peat blocks exhibited significantly greater plant height (52.46 cm), stem diameter (0.65 cm), number of leaves (29.00), and leaf area (524.54 cm²) compared to those in peat moss. Growth rate modelling using the sigmoidal equation y = A/(1+be−cx) revealed that peat blocks-grown seedlings had a higher potential maximum value for all parameters, indicating sustained and accelerated growth. Chlorophyll content and fluorescence measurements further suggested better physiological responses in peat blocks-grown seedlings. These findings highlight the potential of peat blocks as an innovative and efficient alternative to traditional peat moss for enhancing Capsicum annuum L. seedling growth in nursery conditions.
Keywords: chilli, nursery media, peat blocks, peat moss, seedling growth