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Control of phytophthora root rot of avocado with phosphorus acid

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Pegg, K. G., Whiley, A.W., Saranah, J. B. and Glass, R.J. (1985) Control of phytophthora root rot of avocado with phosphorus acid. Australasian Plant Pathology, 14 . pp. 25-29. ISSN 1448-6032

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Article Link: https://doi.org/10.1071/APP9850025


Phytophthora root rot of avocado and Persea indica caused by Phytophthora cinnamomi was controlled by spraying or drenching with phosphorous acid Dartiallv neutralised with potassium hydroxide, or with phosethyl Al. Phosphoric acid drenches increased phytophthora root rot in avocado, whereas dolomitic limestone, gypsum or diammonium phosphate did not affect disease incidence. A twenty per cent solution of partially neutralised phosphorous acid when injected into the trunks of seven-year-old trees affected by phytophthora root rot permitted rapid recovery of trees over a 12 month period. Injections with phosethyl Al (Experimental formulation 2008), and a ten per cent solution of phosphorous acid, and soil applications of metalaxyl gave slower remission of disease symptoms.

Item Type:Article
Subjects:Plant pests and diseases > Plant pathology
Plant pests and diseases > Pest control and treatment of diseases. Plant protection > Pesticides
Live Archive:14 Feb 2024 01:50
Last Modified:14 Feb 2024 01:50

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