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Field diagnostic test for nitrate in tomato petiole sap

Lyons, D.J. and Barnes, J.A. (1987) Field diagnostic test for nitrate in tomato petiole sap. Queensland Journal of Agricultural and Animal Sciences, 44 (1). pp. 37-42.



Four rapid tests for nitrate were assessed for use on tomato sap. The performance characteristics of each were examined. Merckoquant strips were favoured as there was acceptable differentiation and repeatability of response over a suitable working range. Procedures are described for the collection of tomato petiole sap and for the estimation of nitrate in that sap using the rapid test. Sap was diluted 1 :20 with water using plastic ware for the test. A linear relationship was established between nitrate measured by the strip test and by an auto-analyser
method. The linear model was used to successfully predict the nitrate content of further sap collected at Bundaberg, using the strip test. There was no significant difference between operators of the strips nor between batches of strips.

Item Type:Article
Corporate Creators:Department of Agriculture and Fisheries, Queensland
Subjects:Agriculture > Agriculture (General) > Methods and systems of culture. Cropping systems
Plant culture > Irrigation farming
Plant culture > Field crops
Live Archive:28 May 2024 04:07
Last Modified:28 May 2024 04:07

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