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231225s2018 xx |||||o 00| ||eng c |
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|a 10.1094/PDIS-09-16-1392-RE
|2 doi
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|a pubmed24n0976.xml
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|a DE-627
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|e rakwb
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|a eng
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| 100 |
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|a Browne, G
|e verfasserin
|4 aut
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|a Efficacy of Anaerobic Soil Disinfestation for Control of Prunus Replant Disease
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|c 2018
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|a ƒa Online-Ressource
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|a Date Completed 13.02.2019
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|a Date Revised 15.02.2019
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a Prunus replant disease (PRD) is an important soilborne complex that suppresses growth and productivity of replanted stone fruit and nut orchards. It is effectively managed with preplant soil fumigation but, due to regulatory challenges, nonfumigant-based control strategies for PRD and other soilborne disease problems may become increasingly important, especially in California. We examined the potential of preplant anaerobic soil disinfestation (ASD) for control of PRD in four repeated orchard replant trials on sandy loam soil near Parlier, CA. After removal of the old orchard trees, alternative ASD treatments, all using rice bran as the main carbon source, were implemented, starting in late September. The alternative treatments incorporated rice bran at (i) 20 t ha-1, alone, in 3.0-m-wide row strips; (ii) 20 t ha-1, preceded by incorporation of a sudangrass cover crop and followed by drip application of molasses (10 t ha-1), in 3.0-m-wide row strips; (iii) 20 t ha-1, alone, in 1.8-m-wide strips; or (iv) 12 t ha-1, alone, in 1.8-m-wide strips. All ASD-treated areas were covered with clear tarp and drip irrigated with 25 cm of water. Tarps remained for 6 weeks, during which the soil moisture level was kept at or above field capacity by drip irrigation. All trials included nontreated control and fumigated standard treatments. ASD raised temperature and reduced redox potential in soil at 15- and 46-cm depths for 6 weeks. Fumigation and ASD treatments both nearly eradicated bioassay inoculum of Pythium ultimum in the soil before almond trees were replanted and significantly affected almond tree root communities of fungi and oomycetes after planting. Fumigation treatments and ASD treatments with rice bran at 20 t ha-1 in 3.0-m strips increased tree growth significantly and by similar magnitudes. Among repeated experiments, mean increases in trunk cross-sectional area growth due to fumigation ranged from 137 to 264%, while the increases due to ASD at 20 t ha-1 in 3.0-m strips ranged from 148 to 214%, compared with controls. ASD offers effective control of PRD and is worthy of further optimization and testing for management of PRD and additional orchard replant problems
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|a Journal Article
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|a Ott, N
|e verfasserin
|4 aut
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|a Poret-Peterson, A
|e verfasserin
|4 aut
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|a Gouran, H
|e verfasserin
|4 aut
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| 700 |
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|a Lampinen, B
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Plant disease
|d 1997
|g 102(2018), 1 vom: 01. Jan., Seite 209-219
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|x 0191-2917
|7 nnns
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| 773 |
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|g volume:102
|g year:2018
|g number:1
|g day:01
|g month:01
|g pages:209-219
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|u http://dx.doi.org/10.1094/PDIS-09-16-1392-RE
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