Anaerobic Soil Disinfestation (ASD) Combined with Soil Solarization as a Methyl Bromide Alternative: Vegetable Crop Performance and Soil Nutrient Dynamics

Butler, David M.; Kokalis-Burelle, Nancy; Albano, Joseph P.; McCollum, T.G.; Muramoto, Joji; Shennan, Carol; Rosskopf, Erin N.

doi:10.1007/s11104-014-2030-z

Cited by 95 publications

(82 citation statements)

References 28 publications

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“…Besides a direct killing of pathogens, effects of BSD on soil microbiota might also directly or indirectly result from the changes in soil physical and chemical properties, such as soil pH, Ec, nutrients, and soil structure (Ferreras et al 2006;Gelsomino and Cacco 2006;Gopinath et al 2008;Butler et al 2014). In this study, the original soil pH (4.2) was very acidic and not suitable for general plant growth and microbial activity, but it increased up to 6.0 after BSD treatment.…”

Section: Discussionmentioning

confidence: 68%

“…In this study, the original soil pH (4.2) was very acidic and not suitable for general plant growth and microbial activity, but it increased up to 6.0 after BSD treatment. However, rather contrasting results were reported regarding the soil pH change in BSD: in some cases the soil pH was found to be reduced (Momma et al 2006;Huang et al 2015), whereas in others increasing pH was reported (Butler et al 2012;Butler et al 2014). In fact, the change of soil pH depends on the original pH in soil.…”

Section: Discussionmentioning

confidence: 94%

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Effects of biological soil disinfestation and water regime on suppressing Artemisia selengensis root rot pathogens

et al. 2015

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Purpose Biological soil disinfestation (BSD) is an effective non-chemical method to control soil-borne disease by incorporating organic amendments into soil under flooding conditions. For suppressing Artemisia selengensis root rot pathogens (Fusarium oxysporum f. sp. cubense (FOC), Phytophthora spp., and Pythium spp.), the effects of BSD treatment using maize straw as organic material and water regime were investigated by greenhouse experiments. Materials and methods Pathogens infested soil was filled in greenhouse pots and incorporated with maize straw at rates of 0.2 %, 0.5 %, and 2 % (w/w) under flooded or water-saturated (100 % water-holding capacity) conditions at 25-35°C for 25 days. Results and discussion The population of A. selengensis root rot pathogens was effectively reduced after BSD treatments with all three maize straw application rates, and the largest reduction was reached up about 90 % at 2 % application rate.No obvious difference in suppressing effect was observed between flooded and water-saturated soil conditions with the same application rate of maize straw. BSD induced bacterial community structure shift and biodiversity enhancement. Two toxic organic acids producers, Clostridium and Bacillus spp., were found as predominant populations in both flooding alone and BSD treatments, while four types of organic acids, acetate, propionate, butyrate, and isovelerate were only detected in BSD treatments. Besides, increasing soil pH and organic matter with concomitantly decreasing nitrate occurred in BSD-treated soils. Conclusions Maize straw is an effective BSD organic material, which might also provide a potential and environmentfriendly disposal strategy of crop residues. Saturating soil to reach 100 % WHC was a good alternative to soil flooding in BSD. Bacterial community shifts, organic acids accumulation, and soil properties changes indicated multiple ways that might be involved in suppressing A. selengensis root rot pathogens during BSD treatment.

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Section: Discussionmentioning

confidence: 68%

Section: Discussionmentioning

confidence: 94%

Effects of biological soil disinfestation and water regime on suppressing Artemisia selengensis root rot pathogens

et al. 2015

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“…For example, an integrated weed management strategy could potentially combine soil treatment by ASD with mulch barriers less susceptible to piercing by the leaf tips of C. esculentus (e.g. Daugovish & Mochizuki, ) or soil solarisation during ASD treatment (clear rather than opaque plastic mulch) to increase weed propagule mortality (Johnson et al ., ; Butler et al ., ). Conventional herbicide options labelled for C. esculentus control in horticultural crops are few and often have efficacy limitations (McAvoy & Freeman, ); however, if paired with ASD treatment, this integrated system may provide adequate control (Guo et al ., ).…”

Section: Discussionmentioning

confidence: 97%

“…However, large variability in suppression of tuber sprouting (35–70%) indicates that ASD may need optimisation with characterisation of amendment C:N ratios to better suppress sprouting, growth and proliferation of daughter shoots and tubers. Appropriate C:N ratio of organic amendments is necessary for subsequent horticultural crop performance (non‐legumes), not only under aerobic conditions (Rodriguez‐Kabana et al ., ), but also under anaerobic conditions (Butler et al ., ), due to impacts on N mineralisation and availability. Moreover, C:N ratio is known to be important for shifts in microbial population structure and decomposition of organic matter (Leite et al ., ) with N‐limited growth occurring with C:N ratios above 20‐25:1 (Sinsabaugh et al ., ).).…”

Section: Introductionmentioning

confidence: 99%

Effect of anaerobic soil disinfestation amendment type and C:N ratio on Cyperus esculentus tuber sprouting, growth and reproduction

2018

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Anaerobic soil disinfestation (ASD) is a cultural technique primarily targeted for control of soilborne plant pathogens, but can also impact weed propagules. A repeated pot study was conducted to evaluate ASD treatment impact on sprouting and growth of introduced Cyperus esculentus (yellow nutsedge) tubers using dry molasses-based and wheat bran-based amendment mixtures at four carbon-to-nitrogen (C:N) ratios (from 10:1 to 40:1) and compared with a nonamended control. The mean percentage of sprouted tubers recovered after ASD treatment was lower for wheat bran-based (42%) than dry molasses-based (65%) amendments, and tuber production was 1.6-fold higher in dry molasses-based than wheat bran-based treatments. The highest percentage of sprouted tubers (79%) and the highest mean production of large tubers (threefold higher than wheat bran-based and 1.7-fold higher than molasses-based amendments) were observed for the non-amended control. Tuber sprouting was significantly lower from all ASD treatments (regardless of amendment C:N ratio) compared with the non-amended control at a 15 cm burial depth. New tuber production was lowest at C:N ratios of 10:1 and 20:1 and more than twofold higher in the non-amended control. Wheat bran-based amendments reduced above-ground C. esculentus biomass compared with the non-amended control and ASD treatments with molasses-based amendments, and reduced belowground biomass compared with molasses-based amendments. Above-ground biomass was highest at amendment C:N ratio of 10:1, and below-ground biomass was highest at amendment C:N ratio of 40:1 and the non-amended control. ASD treatment with wheat bran-based amendments at lower C:N ratios reduced tuber sprouting and reproduction compared with the non-amended control, but not at rates high enough to use as a primary weed management tactic.

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“…In that way, it has advantage over soil solarization. In a US field study, a combination of anaerobic soil disinfestation using molasses as the carbon source and solarization was suggested as an effective strategy to maintain pepper and eggplant yields in the absence of soil fumigants (Butler et al 2014).…”

Section: Anaerobic Soil Disinfestationmentioning

confidence: 99%

Bio-based and Reduced-Risk Strategies for the Management of Phytophthora Blight and Root Rot of Pepper

Wang

Cao

et al. 2016

Bioformulations: For Sustainable Agriculture

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Anaerobic Soil Disinfestation (ASD) Combined with Soil Solarization as a Methyl Bromide Alternative: Vegetable Crop Performance and Soil Nutrient Dynamics

Cited by 95 publications

References 28 publications

Effects of biological soil disinfestation and water regime on suppressing Artemisia selengensis root rot pathogens

Effects of biological soil disinfestation and water regime on suppressing Artemisia selengensis root rot pathogens

Effect of anaerobic soil disinfestation amendment type and C:N ratio on Cyperus esculentus tuber sprouting, growth and reproduction

Bio-based and Reduced-Risk Strategies for the Management of Phytophthora Blight and Root Rot of Pepper

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