Seymour, Nicole P. and Edwards, David G. and Thompson, John P. (2019) A dual rescaled Mitscherlich model of the simultaneous savings in phosphorus and zinc fertiliser from arbuscular mycorrhizal fungal colonisation of linseed (Linum usitatissimum L.). Plant and Soil. ISSN 0032-079X
Abstract
Aim: This study aimed to determine quantitatively the value of AMF in supporting plant growth at various levels of both P and Zn simultaneously. Methods: Linseed (Linum usitatissimum L.) was grown in a black vertisol at a range of applied P (0–400 mg/kg soil) and Zn (0–60 mg/kg soil) with and without arbuscular mycorrhizal fungi (AMF) in a glasshouse experiment. Results: Without AMF, linseed did not respond to either P or Zn applied alone; very high rates of both P (400 mg/kg) and Zn (15 mg/kg) were required for good growth. Plants with AMF grew as well with just 50 mg P/kg and 3.75 mg Zn/kg. AMF markedly increased P content of the linseed whole tops at all levels of P and Zn fertiliser, and increased Zn content in the presence of P fertiliser rates up to 200 mg P/kg. A dual rescaled Mitscherlich equation, with terms for both P and Zn was derived and used to calculate plant growth responses and savings of P and Zn fertiliser by AMF. Conclusions: AMF are clearly effective in reducing requirements of both P and Zn for efficient production of mycorrhizal-dependent crops. Diagnosis of AMF levels will allow more efficient use of P and Zn fertilisers saving on costly inputs of declining resources.
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| Item Type: | Article (Commonwealth Reporting Category C) |
|---|---|
| Refereed: | Yes |
| Item Status: | Live Archive |
| Additional Information: | Published online: 15 April 2019. Permanent restricted access to ArticleFirst version, in accordance with the copyright policy of the publisher. |
| Faculty/School / Institute/Centre: | Current - Institute for Life Sciences and the Environment - Centre for Crop Health (24 Mar 2014 -) |
| Faculty/School / Institute/Centre: | Current - Institute for Life Sciences and the Environment - Centre for Crop Health (24 Mar 2014 -) |
| Date Deposited: | 04 Jul 2019 02:10 |
| Last Modified: | 05 Jul 2019 04:42 |
| Uncontrolled Keywords: | Mitscherlich response surface, linseed, flax, Arbuscularmycorrhizae, Funneliformis mosseae, Linum usitatissimum, phosphorus, zinc |
| Fields of Research : | 07 Agricultural and Veterinary Sciences > 0703 Crop and Pasture Production > 070306 Crop and Pasture Nutrition 06 Biological Sciences > 0605 Microbiology > 060505 Mycology |
| Socio-Economic Objective: | B Economic Development > 82 Plant Production and Plant Primary Products > 8205 Winter Grains and Oilseeds > 820504 Linseed |
| Funding Details: | |
| Identification Number or DOI: | 10.1007/s11104-019-04065-2 |
| URI: | http://eprints.usq.edu.au/id/eprint/36589 |
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