Low Carbon Amendment Rates During Anaerobic Soil Disinfestation (Asd) at Moderate Soil Temperatures Do Not Decrease Viability of Sclerotinia Sclerotiorum Sclerotia or Fusarium Root Rot of Common Bean

Butler, David M.; Ownley, Bonnie H.; Dee, M. E.; Eichler, Sarah E.; McCarty, David Grant; Shrestha, Utsala; Kokalis-Burelle, Nancy; Rosskopf, Erin N.

doi:10.17660/actahortic.2014.1044.23

Cited by 20 publications

(13 citation statements)

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“…Instead, soil pH increased slightly, became nearly neutral (7.1) after the three-week treatment period, and then returned to initial levels at the end of the crop cycle. Similar results were reported by Butler et al (2014b) who observed a higher soil pH in ASD treatment than in a fallow control in the presence of moderate temperatures (15 -24 °C). The authors suggested that soil pH probably increased due to the release of basic cations from added organic materials without the release of sufficient organic acids during anaerobic degradation of the added C-source to generate a decrease in soil pH as reported for other ASD studies (Momma et al, 2006;Rosskopf et al, 2015).…”

Section: Discussionsupporting

confidence: 89%

“…Temperature can play a significant role in the effectiveness of ASD treatments (Butler et al, 2014b;Ebihara and Uematsu, 2014), but temperatures at both locations in this study resulted in anaerobic conditions, indicating that C application was adequate under both temperature regimes. Soil disinfestation treatments had no influence on soil temperature.…”

Section: Discussionmentioning

confidence: 75%

See 1 more Smart Citation

Anaerobic soil disinfestation impact on soil nutrients dynamics and nitrous oxide emissions in fresh-market tomato

Gioia

Ozores-Hampton

Zhao

et al. 2017

Agriculture, Ecosystems & Environment

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Section: Discussionsupporting

confidence: 89%

Section: Discussionmentioning

confidence: 75%

Anaerobic soil disinfestation impact on soil nutrients dynamics and nitrous oxide emissions in fresh-market tomato

Gioia

Ozores-Hampton

Zhao

et al. 2017

Agriculture, Ecosystems & Environment

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“…We also found that C source amended treatments should be maintained under anaerobic conditions to achieve the best results compared to the C source amended aerobic treatments. According to our knowledge, with the exception of the present research, ASD has never been tested against S. sclerotiorum in Sri Lanka and only few attempts have made in the USA (Butler et al 2014;Sanabria-Velazquez et al, 2018) although it is well tested against many other soil borne pathogens around the world (Blok et al 2000;Goud et al 2004;Hewavitharana and Mazzola 2016;Kokalis-Burelle et al 2013;Momma 2008;Shrestha et al 2018). Though durian and grass cuttings did not completely inhibited sclerotia germination, they were effective compared to the aerobic negative control.…”

Section: Discussionmentioning

confidence: 53%

“…Consequently, oxygen depletion generates reduced anaerobic condition that alter the soil microbiome. ASD was first developed in Japan and in the Netherlands (Blok et al 2000;Goud et al 2004;Momma 2008) and subsequently adapted in California (Shennan et al 2014), Florida (Butler et al 2014), and Tennessee (McCarty et al 2014) of the USA. It has been found to be effective in suppressing numerous soil borne plant pathogens including Fusarium oxysporum f. sp.…”

Section: Introductionmentioning

confidence: 99%

Carbon source dependent-anaerobic soil disinfestation (ASD) mitigates the sclerotial germination of Sclerotinia sclerotiorum

Mahalingam

Rajapakse

Somachandra³

et al. 2020

Trop. plant pathol.

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Though Sclerotinia sclerotiorum is a well-studied plant pathogen that causes significant economic damage worldwide, sustainable and environmental friendly control methods are difficult to establish due to it wide host range, cosmopolitan distribution and production of recalcitrant structures that can survive in soil for a long time. The pathogen was found causing a severe disease incidence on cabbage in 2016 in Sri Lanka. It was hypothesized that a) isolates of the recent disease outbreak display cross resistance to commonly applied fungicides and b) carbon (C) source supplemented Anaerobic Soil Disinfestation (ASD) is effective in mitigating the germination of sclerotia. In vitro fungicide sensitivity assays showed large variation in mycelial growth inhibition indicating high adaptability of the population towards environmental fluctuations and management practices. Signatures of cross resistance were evident. ASD was carried out using cabbage (Brassica oleracea) and leek (Allium ampeloprasum) cull piles, durian (Durio zibethinus) peels and grass cuttings (Axonopus compressus) as C sources and determined the sclerotial viability. Cabbage and leek cull piles at rates of 60-100 mg/g soil completely inhibited sclerotial germination. Maintaining anaerobic condition along with C source amendments was found to be a critical step in mitigating the sclerotial germination. GC-MS analysis of the volatiles of cabbage leaves, leeks and durian further confirmed the presence of various bioactive compounds with potential antifungal activity. Therefore, in addition to elevated microbial activity in treatments, the volatiles of C sources may have helped mitigating sclerotial germination.

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“…lycopersici (74%). For Sclerotinia , which was less affected by ASD, data were reported only from species sclerotiorum and it was reported that sclerotial germination was highly influenced by the low amendment rate and soil temperature ( Butler et al, 2014b ). Further, sclerotial viability, release of biochemical compounds, and infection ability vary under different growing conditions and ineffectiveness of ASD in such cases may relate to a combination of factors.…”

Section: Discussionmentioning

confidence: 99%

A Meta-Analysis of the Impact of Anaerobic Soil Disinfestation on Pest Suppression and Yield of Horticultural Crops

2016

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Anaerobic soil disinfestation (ASD) is a proven but relatively new strategy to control soil borne pests of horticultural crops through anaerobic decomposition of organic soil amendments. The ASD technique has primarily been used to control soil borne pathogens; however, this technique has also shown potential to control plant parasitic nematodes and weeds. ASD can utilize a broad range of carbon (C) amendments and optimization may improve efficacy across environments. In this context, a meta-analysis using a random-effects model was conducted to determine effect sizes of the ASD effect on soil borne pathogens (533 studies), plant parasitic nematodes (91 studies), and weeds (88 studies) compared with unamended controls. Yield response to ASD was evaluated (123 studies) compared to unamended and fumigated controls. We also examined moderator variables for environmental conditions and amendments to explore the impact of these moderators on ASD effectiveness on pests and yield. Across all pathogen types with the exception of Sclerotinia spp., ASD studies show suppression of bacterial, oomycete and fungal pathogens (59 to 94%). Pathogen suppression was effective under all environmental conditions (50 to 94%) and amendment types (53 to 97%), except when amendments were applied at rates less than 0.3 kg m-2. The ASD effect ranged from 15 to 56% for nematode suppression and 32 to 81% for weed suppression, but these differences were not significant. Significant nematode moderators included study type, soil type, sampling depth, incubation period, and use of mixed amendments. Weed suppression due to ASD showed significant heterogeneity for all environmental conditions, confirming that these studies do not share a common effect size. Total crop yield was not reduced by ASD when compared to a fumigant control and yield was significantly higher (30%) compared to an unamended control, suggesting ASD as a feasible option to maintain yield without chemical soil fumigants. We conclude ASD is effective against soil borne pathogens and while not conclusive due to a limited number of studies, we expect the same for nematodes and weeds given observed effect sizes. Findings should assist researchers in exploring ASD efficacy in particular environmental conditions and allow for development of standard treatment protocols.

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Low Carbon Amendment Rates During Anaerobic Soil Disinfestation (Asd) at Moderate Soil Temperatures Do Not Decrease Viability of Sclerotinia Sclerotiorum Sclerotia or Fusarium Root Rot of Common Bean

Cited by 20 publications

References 0 publications

Anaerobic soil disinfestation impact on soil nutrients dynamics and nitrous oxide emissions in fresh-market tomato

Anaerobic soil disinfestation impact on soil nutrients dynamics and nitrous oxide emissions in fresh-market tomato

Carbon source dependent-anaerobic soil disinfestation (ASD) mitigates the sclerotial germination of Sclerotinia sclerotiorum

A Meta-Analysis of the Impact of Anaerobic Soil Disinfestation on Pest Suppression and Yield of Horticultural Crops

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