Effect of Planting Materials under Automatic Control System in a Closed Greenhouse on the Topic of Cardamom

ผลของวัสดุปลูกภายใต้ระบบควบคุมอัตโนมัติในโรงเรือนระบบปิดต่อการเจริญเติบโตของกระวาน

Abstract

          This research aimed to apply and test an automatic control system to control environmental factors such as watering, pH and electrical conductivity (EC) in greenhouse systems. The experiment followed a Completely Randomized Design (CRD). with 5 replicates, each consisting of 3 pots. The first factor was the type of planting material, which included palm husks, coconut husks and chopped coconut husks. These materials were mixed using three methods. formula 1: 50% chopped coconut husks and 50% palm husks, Planting material formular 2: 50% coconut husk and 50% chopped coconut husks, and Planting material formular 3: 50% palm husks and 50% coconut husk. The second factor was the nutrient solution concentration, set at an electrical conductivity (EC) at 2.5 mS/cm and pH range 5.5-6.5. The results showed that the planting material composed of 50% chopped coconut husks and 50% palm husks yielded the best outcomes in terms of cardamom growth and productivity, with the highest average number of plants per pot (15.20) and lowest percentage of rotten shoots at (3.09%).