Effect of rate and split application of fertilizer on growth and yield performances of Brassica oleracea var. botrytis under loT-based protected house in low-country wet zone of Sri Lanka

Abstract

An experiment was conducted to investigate the effect of rate and split fertilization on the growth and yield of cauliflower (Brassica oleracea var. botrytis) grown under IoT-based protected house conditions in Sri Lanka. Cauliflower variety White Flash (F1 hybrid) had grown using cocopeat potting media. Three different rates (1.0 g/plant, 1.5 g/plant and 2 g/plant) and three splits (once per day, twice a day and three times a day) of Albert’s fertilizer mixture was tested on growth and yield performance of Brassica oleracea var. botrytis. The experimental design was two-factor factorial completely randomized design with nine treatment combinations and four replicates. Treatments were applied daily. Optimum temperature (25-30℃) and relative humidity (65-70%) were controlled using IoT platform.