PEMBERIAN BERBAGAI KOMPOSISI CAMPURAN BAHAN KOMPOS DAN VOLUME AIR TERHADAP PERTUMBUHAN TANAMAN JARAK PAGAR (Jatropha curcas Linn)

Abstract

The objective of this research is to select the best mixture of compost and the proper volume ofwater for the growth of castor bean. The research was carried out the greenhouse of faculty ofagriculture university of Riau. This research used factorial in completely Randomize Design withtwo factors and 3 replication. First factor is compost application (without compost, matter ofcastor bean+orgadec, matter of castor bean +manure+orgadec, matter of castor bean+charcoalhusk+orgadec). Second factors is the volume of water applied (126 ml/day, 157 ml/day,188ml/day). Analysis of varience (ANOVA) and Duncan New Multiple Range Test. Parametersmeasured are the height of the plant, the increase of the number of leaves, leave area, steam turn,the ratio of canopy and root and seedling quality index. The result of research is the applicationof compost and the volume of water 157 ml/day gives the best effect for plant growth, leaf areand seedling quality index of castor bean.

Keyword: kompos, jarak pagar, volume air