APPLICATION OF FREE ENERGY WATER-PUMP FOR CLEAN CROP PRODUCTION THROUGH NFT-HYDROPONIC SYSTEM IN RESPONSE TO CLIMATE CHANGE

Water-based cropping is a technology that has long been used abroad but is rarely used in Lao PDR due to its high cost. several scholars type to nd the solution for reducing the cost of growing vegetables and mitigating soil degradation. As this experiment efforted in optimization of water supply for the growing system to avoid using of energy in driving water but it was unsuccessful. However, the purpose of this experiment was to 1) create a calendar of market demand for vegetables to create a planting plan; 2) determine the suitability of air temperature, humidity, including pH, and EC values of water in the growing system; 3) Control the concentration of nutrients that plants need at each stage of growth. Sellers' interviews, climate monitoring, and recording, monitoring and measuring plant growth, and water quality measurement and analysis were the methods used in this experiment.