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Title: | Effects of Carrier Materials and Storage Temperatures on the Viability and Stability of Three Biofertilizer Inoculants Obtained from Potato (Solanum tuberosum L.) Rhizosphere |
Authors: | Aloo, Becky Nancy Mbega, Ernest Rashid Makumba, Billy Amendi Tumuhairwe, John Baptist |
Keywords: | Rhizobacteria Carrier materials Biofertilizer Bioformulations Shelf-life |
Issue Date: | 2022 |
Publisher: | MDPI, Basel, Switzerland. |
Abstract: | Biofertilizer technology continues to be derailed by the short shelf life of inoculants. The present study investigated the suitability of wheat-bran (WB), rice-husks (RH), farmyard-manure (FYM), bagasse (BG), and sawdust (SD) in the formulation of potato-derived Klebsiella grimontii (MPUS7), Serratia marcescens (NGAS9), and Citrobacter freundii (LUTT5) under refrigerated (8 ◦C) and room (25 ± 2 ◦C) storage. The physicochemical properties of the materials were assessed before sterilization and introduction of the inoculants and assessment of their viability for 8 months. Most of the physicochemical properties of the materials varied significantly (p < 0.05). Bagasse supported the maximum growth of MPUS7 (5.331 log CFU g−1) under refrigeration and LUTT5 ( 4.094 log CFU g−1) under both conditions. Under room storage, the maximum growth of MPUS7 (3.721 log CFU g−1) occurred in WB. Formulations that remained viable under room storage can easily be integrated into existing agricultural distribution systems that lack refrigeration |
URI: | https://doi.org/10.3390/agriculture12020140 http://ir.mu.ac.ke:8080/jspui/handle/123456789/6673 |
Appears in Collections: | School of Biological and Physical Sciences |
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