Growth of Rice (Oryza Sativa L) at Rooftop with Substrate Hydroponic System Using Various Growth Media
Cecep Hidayat*, Firda Ayu Lestari,Budi Frasetya

UIN Sunan Gunung Djati Bandung
cephidayat62[at]uinsgd.ac.id

Abstract

Substrate hydroponic system of rice cultivate by using building’s rooftop is one step toward improving grain yield production. One of the factors influencing its success is plant growth media. This research aimed to study the effect of composition palnt growth media on the rice growth with substrate hydroponic system at roof top. This research was carried using a simple Completely Randomized Design with five levels of composition plant growth media : rice husk biochar (RB) and cocopeat, namely A (100% RB); B (100% cocopeat); C (50% RB : 50% cocopeat); D (25% RB : 75% cocopeat); dan E (75% RB : 25% cocopeat). The result showed that composition 75% RB : 25% cocopeat significantly affected plant height. The other factors to be considered in substrate hydroponic rice cultivation at roottop were nutrients composition. Addition of NH4+ as a source of nitrogen on nutrition is needed by plant for growing on vegetative stage. The ratio between K:Ca is also play important influence; K should be more than Ca to get stronger plant against environmental stress. 1.25: 1 ratio can be applied to complete requirement of those. The use of a container becomes an alternative to maintain media relative humidity and nutritional EC value. Either in the rainy or dry season, checking of media relative humidity and nutrient EC must be carried out periodically to be maintained at optimum conditions

Keywords: Media, Rice, Rooftop, Hydroponic, Nutrient

Topic: Environmental Engineering