Biological Soil Disinfestation

Gindrat, D.

doi:10.1016/b978-0-444-41692-6.50019-7

Cited by 4 publications

(2 citation statements)

References 141 publications

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“…Lack of an enhanced performance of this biocontrol agent applied at a higher rate can be explained, at least partially, by presumably insufficient availability of the nutritive base in rockwool substrate, since according to Gindrat (1979) massive introduction of an antagonist into soil is generally useless if there is no food base directly available.…”

Section: Resultsmentioning

confidence: 99%

Attempts at Biological Control of Clavibacter michiganensis subsp. michiganensis On Rockwool-Grown Greenhouse Tomatoes

Slusarski¹

2008

Journal of Fruit and Ornamental Plant Research

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Attempts at Biological Control ofClavibacter michiganensissubsp.michiganensisOn Rockwool-Grown Greenhouse TomatoesTwo greenhouse experiments were conducted in which tomato plants artificially inoculated withClavibacter michiganensissubsp.michiganensis(Cmm) were grown in an open rockwool system as spring and autumn crops. Two isolates of the rhizosphere bacteria,Pseudomonas fluorescensstrain PSR21,Pseudomonas reactansstrain GGS14, a commercial biocontrol agent Aqua Bac Plus (Bacillusspp.) and a proprietary disinfectant containing QAC+Chx, applied at weekly intervals, were evaluated for their efficiency in the suppression of the bacterial canker of tomato. All treatments tested revealed to be ineffective in controlling the disease. The introduction ofCmmbacteria into the fresh rockwool in the first year of its usage resulted in a 100% death of tomato plants, whereas following an artificial inoculation of two- and three-year-old rockwool slabs withCmmbacteria dead plants amounted to 70 and 58%, respectively. This indicates that in the re-used rockwool a natural microbial suppressiveness to bacterial canker of tomato might be developed in the root zone.

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Section: Resultsmentioning

confidence: 99%

Attempts at Biological Control of Clavibacter michiganensis subsp. michiganensis On Rockwool-Grown Greenhouse Tomatoes

Slusarski¹

2008

Journal of Fruit and Ornamental Plant Research

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“…Treatments of soil for differentially killing some target organisms but keeping non-target organisms alive are often used in various glasshouse studies, especially in plant pathological investigations (Gindrat & Mulder, 1979). In evaluation of soil suppressiveness to nematodes, it is common to compare a field soil or a soil containing a small amount (usually 10%) of the field soil with a conducive soil in which nematode antagonists are killed by heating or chemical treatments (Chen et al, 1996;Westphal & Becker, 2000;Westphal, 2005;Chen, 2007).…”

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confidence: 99%

Effect of temperature treatment on survival of Heterodera glycines and its associated fungi and bacteria

Chen

Liu

2016

Nematol

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In studies of nematode-suppressive soil and plant-parasitic nematode management, it is often desirable to kill nematodes in the soil but keep the microbial community alive. The effect of temperature treatment on survival of Heterodera glycines, the soybean cyst nematode (SCN), and associated fungi and bacteria was investigated. Extracted eggs and cysts, and cysts in soil were subjected to treatments of temperatures ranging from −80 to 55°C for 1 to 24 h. Nematode survival was determined by hatching in vitro and by infectivity and development in soybean, and fungal survival was determined by plating the eggs or cysts on potato dextrose agar. The nematodes survived well between −20 and 45°C, but could not survive at −80 or 48°C and above, while some nematodes were killed after heat treatment of 46°C. By contrast, fungi survived well in the cysts at −80°C, and also much better than nematodes at the high temperatures. Glasshouse studies demonstrated that both bacteria and fungi survived well in the soil treated with −80°C. Transferring 5% of −80°C-treated soil to autoclaved soil could effectively establish nematode suppressiveness. Our study demonstrated that freezing soil at −80°C can kill SCN but maintain nematode suppressiveness, and the soil treatment can improve the method for nematode-suppressive soil evaluation.

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