Pengaruh rizobakteri pemacu pertumbuhan tanaman (RPPT) dan ekstrak guano terhadap pembibitan tanaman jarak pagar (Jatropha curcas L.)
The Effect of Plant Growth Promoting Rhizobacteria (PGPR) and Guano Extract on Seedling of Jatropha curcas L.
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Date
2010Author
Wibowo, Esa Hari
Surahman, Memen
Wiyono, Suryo
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The objective of this research was to study the effect of PGPR, Guano, or combination both of them on seed viability, growth, biomass, and severity of brown spot disease (Cercospora sp) on seedling of Jatropha curcas L.The research was conducted from March 2008 to May 2009 at IPB Experiment Field, Leuwikopo, Darmaga, Bogor. This research consist of two factors, namely PGPR and guano extract with same four consentration levels (0 cc/liter, 5 cc/liter, 10 cc/liter, and 15 cc/liter). The result showed that guano extract affected on stem diameter at 8 weeks after plant out (WAP), length of leaf at 10 WAP, dry weight of biomass at 10 WAP, and severity of brown spot disease at 10 WAP. Neither PGPR nor combination of PGPR and guano extract didn’t affect on seed viability, growth, biomass, and severity of brown spot disease of Jatropha curcas L. Keyword : Jatropha curcas L., PGPR, Extract Guano, Consentration levels