The Viability of Selected Potassium Solubilizing Rhizobacteria in a Mixture of K-Feldspar and Organic Matter as Carrier Material

Authors

Diyan Herdiyantoro, Universitas PadjadjaranFollow
Tualar Simarmata, Universitas Padjadjaran
Mieke R. Setiawati, Universitas Padjadjaran
Nenny Nurlaeny, Universitas Padjadjaran
Benny Joy, Universitas Padjadjaran
Mahfud Arifin, Universitas Padjadjaran
J S. Hamdaniand, Universitas Padjadjaran
Iin P. Handayani, Murray State UniversityFollow

Document Type

Conference Paper

Publication Date

2021

Publication Title

IOP Conference Series: Earth and Environmental Science

Department

Agricultural Science

College/School

Hutson School of Agriculture

Abstract

The potassium solubilizing biofertilizer based on selected potassium solubilizing bacteria (KSB) can facilitate availability of potassium in primary silicate minerals containing potassium to be absorbed by the plants. The key to successful application of biofertilizer in showing positive effects on inoculated plants is the selection of a carrier material that can guarantee viability of inoculants during shelf life before being applied in the field. The purpose of this study was to determine viability of three selected KSB isolates which were formulated in a mixture of K-feldspar (KF), rice straw compost (RSC), rice husk biochar (RHB), and Aleksandrov liquid medium (ALM) as a carrier material for 24 weeks of shelf life. The experiment used a completely randomized design with nine treatments of carrier material composition and three replications. The results showed formula of potassium solubilizing biofertilizer with a composition of 1% mixed culture KSB + 15% KF + 30% RSC + 45% RHB + 9% ALM was the best formula with high inoculant viability during 4 weeks of shelf life. It was evidenced by the increase in respiration and total KSB population by 17.2% and 213.2%, respectively, compared to formula that produced the lowest respiration and total KSB population.

Comments

This is an article published CC-BY 3.0 by IOP Publishing in IOP Conference Series: Earth and Environmental Science, available at https://doi.org/10.1088/1755-1315/748/1/012023

Recommended Citation

Herdiyantoro, D., Simarmata, T., Setiawati, M. R., Nurlaeny, N., Joy, B., Arifin, M., ... & Handayani, I. (2021, April). The Viability of Selected Potassium Solubilizing Rhizobacteria in a Mixture of K-Feldspar and Organic Matter as Carrier Material. In IOP Conference Series: Earth and Environmental Science (Vol. 748, No. 1, p. 012023). IOP Publishing.

Creative Commons License

This work is licensed under a Creative Commons Attribution 3.0 License.