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All Journal AGRIVITA, Journal of Agricultural Science
Eny Rochminarsi
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Agriculture, Biological Sciences & Forestry

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Applications of Potassium Fertilizer and Bacillus Sp. Biopesticide for Increasing Tomato Resistance to Bacterial Wilt Disease Prihatiningsih, Nur; Djatmiko, Heru Adi; Rochminarsi, Eny
AGRIVITA, Journal of Agricultural Science Vol 33, No 1 (2011)
Publisher : Faculty of Agriculture University of Brawijaya and Indonesian Agronomic Assossiation

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Abstract

Bacterial wilt on tomato caused by Ralstonia solanacearum is a crucial disease, because it can reduce yield until 50%. The aims of this research were: 1) to find out biopesticide formula for Bacillus sp.growth, 2) to test Bacillus sp. against R. solanacearum in vitro, 3) to test potassium fertilizer combined with Bacillus sp. for enhancing tomato resistance to the bacterial wilt disease. The research was conducted in 2 steps i.e to test the persistence of Bacillus sp. In biopesticide formula, and to test the best combination of both potassium and the Bacillus sp. biopesticide. The results showed that Bacillus B298 was the best isolate in its persistence on the biopesticide formula of organic growth medium+CaCO3+CMC 1%+mannitol 1%, and in inhibiting R. solanacearum. The best biopesticide formula for the Bacillus sp. persistence was growth organic media+ CaCO3+CMC 1%+mannitol 1%. Bacillus sp. was able to increase tomato resistance to the bacterial wilt disease from the category of susceptible to be tolerant and becoming resistant.   Keywords: tomato, Ralstonia solanacearum, potassium and Bacillus sp.
Applications of Potassium Fertilizer and Bacillus Sp. Biopesticide for Increasing Tomato Resistance to Bacterial Wilt Disease Prihatiningsih, Nur; Djatmiko, Heru Adi; Rochminarsi, Eny
AGRIVITA Journal of Agricultural Science Vol 33, No 1 (2011)
Publisher : Faculty of Agriculture University of Brawijaya in collaboration with PERAGI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17503/agrivita.v33i1.33

Abstract

Bacterial wilt on tomato caused by Ralstonia solanacearum is a crucial disease, because it can reduce yield until 50%. The aims of this research were: 1) to find out biopesticide formula for Bacillus sp.growth, 2) to test Bacillus sp. against R. solanacearum in vitro, 3) to test potassium fertilizer combined with Bacillus sp. for enhancing tomato resistance to the bacterial wilt disease. The research was conducted in 2 steps i.e to test the persistence of Bacillus sp. In biopesticide formula, and to test the best combination of both potassium and the Bacillus sp. biopesticide. The results showed that Bacillus B298 was the best isolate in its persistence on the biopesticide formula of organic growth medium+CaCO3+CMC 1%+mannitol 1%, and in inhibiting R. solanacearum. The best biopesticide formula for the Bacillus sp. persistence was growth organic media+ CaCO3+CMC 1%+mannitol 1%. Bacillus sp. was able to increase tomato resistance to the bacterial wilt disease from the category of susceptible to be tolerant and becoming resistant.Keywords: tomato, Ralstonia solanacearum, potassium and Bacillus sp.
Co-Authors Heru Adi Djatmiko Nur Prihatiningsih