Pertumbuhan, kekuatan tarik dan mulur serat rami (Boehmeria nivea (L.) gaudich) dengan pemberian asam giberelat (ga3) dan variasi ketersediaan air

Oleh :
Shafi Fauzi Rahman - M0405057 - Fak. MIPA

ABSTRACT Hemp plant Boehmeria nivea is an annual plant which is easy to grow and to reproduce in a tropical region. Hemp fiber has a higher strength than cotton fiber, so that it is not easily broken off. It provides less reduction than another fibers, the humidity of hemp fiber can achieve 12%, and hemp fiber has smooth characteristic, long lasting, and its glint is similar with the silk. This research used complete random design CRD using two factors that were GA3 with 3 concentration variations G, such as 0 ppm, 175 ppm, 200 ppm, and 3 water availability variations A), such as 50%, 75%, 100%. The treatment was given to the rhizome before it was planted and the water availability was given when the shoot was started to form. The measured parameters were parameter of growth and fiber quality. The conclusion of this research is that GA3 treatment has an influence toward the increase of shoot stem height, dry weight, wet weight, fiber pulling test fiber’s strength, but it has no influence in the change of shoot number, leaf number, and elasticity of the fiber. The water availability treatment has no influence toward the entire parameter. The interaction between GA3 and water availability has influence toward hemp B. nivea fiber elasticity. The giving of GA3 in the concentration of 200 ppm shows the best influence toward the entire parameter of growth and fiber quality observed except in wet weight and dry weight. Water availability treatment in SQ 100% shows good influence toward wet weight and dry weight, in SQ 75% it shows a good influence toward the elasticity of the fiber. Key words: Giberelat Acid GA3, water availability, Boehmeria nivea, growth, pulling and elasticity test.