Båth, Birgitta and Otabbong, Erasmus
(2013).
Availability of phosphorus in greenhouse cropping systems with tomatoes - influence of soil and citric acid.
Acta agriculturae Scandinavica. Section B, Soil and plant science. 63
:6
, 483-488
[Journal article]
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PDF
265kB |
Official URL: http://dx.doi.org/10.1080/09064710.2013.804115
Abstract
Analyses of plant sap from organic greenhouse tomato crops show that the levels of phosphorus (P) are frequently low, despite the fact that soil analyses indicate P status in the soil to be good. In the present study, two soils (A and B) with a pH of just over 6 and a high total content of N and P were investigated with respect to release of P and uptake in a tomato crop. The fertilisers primarily used on soil A was silage and blood meal, and on soil B Vinasse and blood meal. An incubation experiment showed that the release of P per unit time was greater from soil A than soil B. This difference between the two soils may be due to lower soil organic matter concentration, with less P sorbed by Al and Fe on soil A, and a fertiliser regime which favours a high concentration of dissolved organic carbon in this soil. Tomato plants grown for 10 weeks in the soils had greater DW production, total uptake of P and concentration of P in the leaves on soil A than on soil B. Addition of citric acid to the soils in order to mobilise P increased plant yield and uptake of N and P on soil A. Despite the increased growth, the concentration of P in plant leaves increased and the N concentration was unchanged. On soil B addition of citric acid decreased Zn uptake in the tomato plants despite good availability, resulting in a lower concentration of this micronutrient in the leaves. The plants on soil A maintained their concentrations of all micronutrients analysed, but the ratio of P to micronutrients increased. Thus for commercial organic tomato growers, adding citric acid with the irrigation water offers a possibility to increase P availability.
Authors/Creators: | Båth, Birgitta and Otabbong, Erasmus | ||||||
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Title: | Availability of phosphorus in greenhouse cropping systems with tomatoes - influence of soil and citric acid | ||||||
Series/Journal: | Acta agriculturae Scandinavica. Section B, Soil and plant science (0906-4710) | ||||||
Year of publishing : | 2013 | ||||||
Volume: | 63 | ||||||
Number: | 6 | ||||||
Page range: | 483-488 | ||||||
Number of Pages: | 6 | ||||||
Publisher: | Taylor & Francis | ||||||
ISSN: | 0906-4710 | ||||||
Language: | English | ||||||
Publication Type: | Journal article | ||||||
Refereed: | Yes | ||||||
Article category: | Scientific peer reviewed | ||||||
Version: | Accepted version | ||||||
Full Text Status: | Public | ||||||
Agris subject categories.: | F Plant production > F40 Plant ecology F Plant production > F62 Plant physiology - Growth and development | ||||||
Subjects: | (A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 401 Agricultural, Forestry and Fisheries > Horticulture | ||||||
Agrovoc terms: | phosphorus, nitrogen, micronutrients, tomato, lycopersicum | ||||||
Keywords: | phosphorus, nitrogen, micronutrients, tomato crop, Solanum lycopersicum mill, citric acid Introduction For the past ten years, a participatory research group in central Sweden has been working on issues relating to organic production of greenhouse tomatoes. An important issue for the growers in the group is to have a fertilisation | ||||||
URN:NBN: | urn:nbn:se:slu:epsilon-e-2086 | ||||||
Permanent URL: | http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-e-2086 | ||||||
Additional ID: |
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ID Code: | 11196 | ||||||
Faculty: | NL - Faculty of Natural Resources and Agricultural Sciences (until 2013) | ||||||
Department: | (NL, NJ) > Dept. of Crop Production Ecology (NL, NJ) > Dept. of Soil and Environment (S) > Dept. of Soil and Environment | ||||||
Deposited By: | SLUpub Connector | ||||||
Deposited On: | 04 Sep 2014 09:03 | ||||||
Metadata Last Modified: | 02 Dec 2014 11:06 |
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