A comparison of the use of Bacillus subtilis with conventional fungicides for the control of apple canker (Nectria galligend)

Swinburne, T. R.; Brown, Averil E.

doi:10.1111/j.1744-7348.1976.tb00573.x

Cited by 10 publications

(4 citation statements)

References 6 publications

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“…Bacillus subtilis isolates were antagonistic to N. ditissima in vitro, and control of leaf scar infections was achieved (Swinburne et al 1975;Swinburne 1973). However, in a two-year field study Swinburne & Brown (1976) found that the bacterium alone was not effective without additional applications of dithianon. Dithianon alone was less effective than in combination with B. subtilis.…”

Section: Figurementioning

confidence: 99%

Can biological products control Neonectria ditissima picking wound and leaf scar infections in apples?

Walter

Campbell

Amponsah³

et al. 2017

NZPP

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Neonectria ditissima is the causal agent of European canker in apple, and conidia infect wounds in apple trees. Several commercially available chemical fungicides and biological products (BPs) were tested for wound protection activity in three field experiments (2014—17). Freshly made wounds (rasp, picking, leaf and/or bud scar) were sprayed with the products at label rates. Wounds were challenge-inoculated with N. ditissima conidia after 24 hours and monitored monthly for lesion development. Only captan and copper oxide consistently protected wounds from infection and disease development in each experiment. The BPs tested in this study did not provide adequate wound protection when challenge-inoculated with N. ditissima at high concentration (>1000 spores/wound) so are not recommended for wound protection during harvest and leaf fall when disease pressure is high.

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Section: Figurementioning

confidence: 99%

Can biological products control Neonectria ditissima picking wound and leaf scar infections in apples?

Walter

Campbell

Amponsah³

et al. 2017

NZPP

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“…To that effect, field studies are in progress. Indeed, B. subtilis and other biological products have not provided wound protection) on susceptible cultivars Swinburne & Brown 1976).…”

Section: Commercial Spray Experiments 4 (Cse4)mentioning

confidence: 99%

Evaluation of biological and agrichemical products for control of Neonectria ditissima conidia production

Walter

Campbell

Amponsah³

et al. 2017

NZPP

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Inoculum control is critical in containing Neonectria ditissima but no agrichemical treatments are currently available to protect picking wounds during harvesting. Inhibition of conidia production was tested using a range of chemical-based pruning paints (PP) in a field trial in 2015. Mainly Bacillus subtilis-containing, biological products (BP) were tested at the same site in 2016. The BP were also tested in a detached-lesion experiment. Spore-producing field lesions were painted with the products and spore release monitored using glass slides after each rain event. For the detached-lesion study, spore production was monitored using rain traps after weekly artificial rain events. Reduced sporulation was observed in all experiments, but not for all treatments. Some PP created a physical barrier that sealed spores in, with lesions continuing to develop below the paint. No lesion healing was observed from any product in either year, with lesion length increasing for all treatments during the experiments.

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“…Successful integrated use of chemical and biological agents has been reported for both, soilborne pathogens [21,22] and air-borne pathogens [23,24]. Our study shows the importance of in vitro studies in order to plan integrated approaches to control fungal pathogens.…”

Section: Resultsmentioning

confidence: 75%

In vitro studies on the effects of fungicides on beneficial fungi of peach twig mycoflora

Cal¹,

Pascual²,

Melgarejo³

1994

Mycopathologia

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Abstract. In vitro studies were carried out to investigate a possible integrated use of chemical and biological means to control the peach twig blight pathogen, Monilinia laxa. Three fungal antagonists of M. laxa (Penicillium purpurogenum, Penicillium frequentans and Epicoccum nigrum) and six fungicides (vinclozolin, iprodione, thiram, captan, benomyl and thiophanate-methyl) were used in the study. Sensitivity of the fungal isolates to the fungicides was determined in vitro by calculating ED50 values. Benomyl and thiophanate-methyl were the most fungitoxic compounds and captan was the least fungitoxic. M. laxa and P. purpurogenum were the most sensitive to all chemicals tested, while E. nigrum and P. frequentans presented bigger differences in their sensitivity to chemicals compared to M. laxa. E. nigrum was consistently less sensitive to benomyl (ED50 = 2.26 ppm), thiophanate-methyl (ED50 = 9.61 ppm) and vinclozolin (ED50 = 3.89 ppm) than the other fungi. P. frequentans was less sensitive to captan, vinclozolin, iprodione, thiophanate-methyl and thiram than M. laxa (8, 7, 5, 4 and 2 times respectively). These results suggest that E. nigrum and P. frequentans could be successfully used in an integrated control programme that combines biological and chemical methods.

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A comparison of the use of Bacillus subtilis with conventional fungicides for the control of apple canker (Nectria galligend)

Cited by 10 publications

References 6 publications

Can biological products control <i>Neonectria ditissima</i> picking wound and leaf scar infections in apples?

Can biological products control <i>Neonectria ditissima</i> picking wound and leaf scar infections in apples?

Evaluation of biological and agrichemical products for control of <i>Neonectria ditissima</i> conidia production

In vitro studies on the effects of fungicides on beneficial fungi of peach twig mycoflora

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