Effect of Plant Growth Promoting Rhizobacteria (pgpr) and Liquid Smoke Against Diseases Attacks and Growth of Pepper (Piper nigrum L.)

Dewi Rumbaina Mustikawati

Abstract


This assessment is a preliminary study that aims to determine the role of PGPR and liquid smoke to the growth and attack of diseases of pepper plants. The assessment was conducted at Natar, South Lampung, Indonesia, on pepper crops. The study lasts from April to October 2014. The studies used randomized block design consisting of three treatments with nine replications. The treatments ie: A) pepper plants without treatment (control), B) pepper plants that applied with PGPR, C) pepper plants that applied with liquid smoke. The parameters observed were plant height, leaf number, branch number and attacks intensity of curly disease and Phytophthora capsici. The observed data for each variable was analyzed by ANOVA and continued with Duncan's Multiple Range Test (DMRT). The results showed that the application of PGPR can be reduce intensity of curly disease up to 61.20% and P. capsici intensity can be reduced up to 47.79%. The application of liquid smoke can be reduce the curly disease attack up to 52.28% and P. capsici up to 63.87%. Although no significant effect but PGPR and liquid smoke each can increase plant height and leaf number of pepper plants compared with control.

Keywords


Pepper; PGPR; liquid smoke; curly disease; Phytophthora capsici.

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References


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