Niamhom were growing in the fifty percentage shading of black plastic
net plot controlled (soil moisture and air relative humidity) by using Internet of Things
( IoT) systems, two types of fertilizers, chemical fertilizers, cow manure fertilizers and
planting three spaces, 30 x 30 centimeter, 50 x 50 centimeter, 70 x 70 centimeter.,
were study in this research Internet of Things ( IoT) systems are able to control soil
moisture and relative humidity above the plate in plot. The Niamhom could grow with
high yields (leaves), high chlorophyll and highest stem height when planting at 30 x 30
centimeter with chemical fertilization were showed. When stored of a non-perforated
plastic bag (LDPE) in refrigerator for 15 days showed slightly change of chlorophyll. The
weight loss was 4.00 – 6.00 percentage and no disease occurred. Powdered green tea,
mixture formulation 1 : 2 of Niamhom, Pandan and adding 1 percentage of stevia give
the appropriate scent and flavor from tester. The color of tea powder was dark green
for chemical fertilizer treatment. The highest total phenolic compounds and
antioxidant activity also were presented.