Co-Inoculation of Organic Potato with Fungi and Bacteria at High Disease Severity of Rhizoctonia solani and Streptomyces spp. Increases Beneficial Effects
Open Access
- 25 September 2021
- journal article
- research article
- Published by MDPI AG in Microorganisms
- Vol. 9 (10), 2028
- https://doi.org/10.3390/microorganisms9102028
Abstract
Rhizobacteria-based technologies may constitute a viable option for biological fertilization and crop protection. The effects of two microbial inoculants (1) PPS: Pseudomonas protegens, P. jessenii and Stenotrophomonas maltophilia biocontrol bacterium strains and (2) TPB: Trichoderma atroviride, Pseudomonas putida, and Bacillus subtilis fungi, bacteria biocontrol, and biofertilizer combinations were examined on potato (Solanum tuberosum L. var. Demon) in three consecutive years in irrigated organic conditions. The number of tubers showing symptoms of Streptomyces sp. and Rhizoctonia sp. was recorded. The severity of symptoms was evaluated based on the damaged tuber surface. There was a large annual variability in both the symptoms caused by soil-borne pathogens, and the effect of bio-inoculants. In the first and second year, with a stronger Rhizoctonia and Streptomyces spp. incidence, the bacterial and fungal combination of TPB inoculums with both the potential plant nutrition and biocontrol ability of the strains seemed to have a better efficiency to control the diseases. This tendency was not supported in the third year, and this may be attributed to the relatively high natural precipitation. Further studies are required to investigate the agronomic benefits of these inoculants and to tailor their application to the soil microbial characteristics and weather conditions.Keywords
This publication has 34 references indexed in Scilit:
- Linking Plant Nutritional Status to Plant-Microbe InteractionsPLOS ONE, 2013
- Inside and outside rhizosphere parameters of barley and dose-dependent stress alleviation at some chronic metal exposuresActa Phytopathologica et Entomologica Hungarica, 2012
- Potential Risks of Copper, Zinc, and Cadmium Pollution due to Pig Manure Application in a Soil-Rice System under Intensive Farming: A Case Study of Nanhu, ChinaJournal of Environmental Quality, 2011
- Soil Microorganisms Mediating Phosphorus Availability Update on Microbial PhosphorusPlant Physiology, 2011
- Mechanisms and recent advances in biological control mediated through the potato rhizosphereFEMS Microbiology Ecology, 2011
- Identification and characterisation of bacterial strains capable to degrade aircraft de-icing fluids at four degreesJournal of Biotechnology, 2010
- Diversity of microorganisms associated with atypical superficial blemishes of potato tubers and pathogenicity assessmentEuropean Journal of Plant Pathology, 2010
- Biological control of potato black scurf by rhizosphere associated bacteriaBrazilian Journal of Microbiology, 2010
- How to evaluate the environmental safety of microbial plant protection products: A proposalBiocontrol Science and Technology, 2007
- Efficacy of several potential biocontrol organisms against Rhizoctonia solani on potatoCrop Protection, 2005