Abstract
Changes in the rhizosphere microflora of potatoes inoculated with isolates ofPseudomonas putida andTrichoderma sp. were studied in selected experiments in the potato- and beet-growing regions. During initial phases of their growth increased numbers of bacteria, a significantly increased occurence of fluorescent pseudomonads but decreased numbers of fungal germs including representatives of the genusFusarium were detected. Later, when the number of pseudomonads in the rhizosphere decreased, an increased occurrence ofRhizoctonia solani was found. In experiments performed in the beet-growing region its occurrence in bacterized potatoes was lower, and varied in the potato-growing region. Bacterization of potatoes also resulted in a lower occurrence of diseases in stored potatoes (potato mould and wet rot). Changes in the microflora of the inoculated potatoes were associated with antagonistic properties of the isolates. Variability of colonization of the roots by pseudomonads can be attributed to changes in soil moisture during plant growth. In the presence ofGaeumannomyces graminis the used isolates ofP. putida stimulated formation of the root system of wheat cultivated in a nutrient medium. Suspensions of microorganisms were more practical as inoculum than the other preparations considered.
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Vraný, J., Rasocha, V. & Hausvater, E. Inoculation of potatoes with microorganisms under field conditions. Folia Microbiol 35, 336–347 (1990). https://doi.org/10.1007/BF02821285
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DOI: https://doi.org/10.1007/BF02821285