Application of isolates of indigenous rhizobakteria: effect on the growth and yield of potato var. Cingkariang

Abstract

Potato var. Cingkariang is originated from Municipality Agam the Province of West Sumatra. This variety has low water content that is good for specific food process such as potato chips and crackers. However, the productivity is low compared to other varieties in Indonesia. Attempts should be made to increase the productivity of potato var. Cingkariang including the introduction of indigenous rhizobacteria to induce better growth and yield. The application of indigenous rhizobacteria is proven to be an easy and environmentally-friendly way to support sustainable agricultural system. This experiment was aimed at determining isolate of rhizobacteria suitable for increasing the growth and yield of potato var. Cingkariang. The experiment was carried out at the experimental station of BPTP Sukarami, Solok from July to November 2018. A completely randomised block design was assigned with three blocks and five treatments as follows: without rhizobacteria, isolate RZ.3.L2.1, isolate RZ.3.L2.2, isolate RZ.3.L2.5, and isolate RZ.1.L2.3. Data were analysed with analysis of variance and mean separation was tested according to HSD 5% level. Results indicated that the isolates did not affect the growth and yield of potato though isolate RZ.3.L2.5 was the best to promote the growth and yield of potato var. Cingkariang.