Cotton stunting corrected by inoculation with arbuscular-mycorrhizal fungal spores
Poster
Paper/Presentation Title | Cotton stunting corrected by inoculation with arbuscular-mycorrhizal fungal spores |
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Presentation Type | Poster |
Authors | Thompson, J. P. (Author), Seymour, N. P. (Author) and Clewett, T. G. (Author) |
Editors | Tran-Nguyen, Lucy |
Journal or Proceedings Title | Proceedings of the 4th Asian Conference on Plant Pathology and the 18th Biennial Australasian Plant Pathology Society Conference (ACPP/APPS 2011) |
Number of Pages | 1 |
Year | 2011 |
ISBN | 9780646555416 |
Web Address (URL) of Paper | http://www.appsnet.org/publications/proceedings/APPS%202011%20Handbook.pdf |
Conference/Event | 4th Asian Conference on Plant Pathology and the 18th Biennial Australasian Plant Pathology Society Conference (ACPP/APPS 2011): New Frontiers in Plant Pathology for Asia and Oceania |
Event Details | 4th Asian Conference on Plant Pathology and the 18th Biennial Australasian Plant Pathology Society Conference (ACPP/APPS 2011): New Frontiers in Plant Pathology for Asia and Oceania Event Date 26 to end of 29 Apr 2011 Event Location Darwin, Australia |
Abstract | Poor crop growth after long periods of fallow, called ‘longfallow disorder’ in the Australian northern grain and cotton region, is caused by a decline in natural arbuscular-mycorrhizal fungi (AMF). In a glasshouse experiment, cotton plants (cv. Deltapine 90) were grown in pots containing 22 kg of pasteurised (steam at 70°C, for 1 h) or unpasteurized vertosol of moderate P fertility (29 mg P/kg soil, Colwell method) from Emerald, Qld (Lat. 23.53 S, Long. 148.67E). At 42 days after sowing, plants in pasteurised soil were stunted (tops 0.7g d.w./plant; AMF colonisation 0%) compared with those in unpasteurised soil (tops 6.2 g; AMF colonization 47.9%). To determined if stunting resulted from loss of AMF, cotton plants already growing in the pasteurised soil were treated factorially: (a) left untreated, (b) inoculated with AMF spores (6 spores/g soil of Glomus mosseae, strain Hart 5), (c) fertilised with P (50 mg/kg soil) or (d) a combination of AMF spores and P. Growth of plants treated with AMF or P improved from 40 days after treatment to maturity (total wt 27.6 g; raw cotton 10.5 g for +AMF ‐P). The untreated plants remained stunted (0.4 g) and produced no bolls. The high mycorrhizal dependency of cotton in this experiment (98% and 36% for total weight in –P and +P treatments respectively, and 100% and 36% for raw cotton) demonstrated the essentiality of the arbuscular‐mycorrhizal symbiosis for cotton production in this region. |
ANZSRC Field of Research 2020 | 300404. Crop and pasture biochemistry and physiology |
Public Notes | Abstract only published - #148. |
Byline Affiliations | Department of Agriculture and Fisheries, Queensland |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q393v/cotton-stunting-corrected-by-inoculation-with-arbuscular-mycorrhizal-fungal-spores
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