
%0 Journal Article
%A Pegg, KG 
%A Whiley, AW 
%A Langdon, PW 
%A Saranah, JB 
%T Comparison of phosetyl-Al, phosphorous acid and metalaxyl for the long-term control of Phytophthora root rot of avocado
%J Australian Journal of Experimental Agriculture
%D 1987/06/01
%V 27
%N 3
%P 471-474
%K 
%R https://doi.org/10.1071/EA9870471
%U https://www.publish.csiro.au/paper/EA9870471 
%X Avocado trees affected by root rot caused by Phytophthora cinnamomi Rands recovered rapidly when given injections into the trunk of phosetyl-A1 or phosphorous acid. Injected trees had greater yields(47.9-67.5 v. 4.3 kg fruit per tree) and lower leaf chloride levels (0.8-2.4 v. 4.2%, w/w) than controls in the third season after starting treatment. Phosphorous acid residues (21-83 mg kg-1) were detected in fruit from injected trees. Metalaxyl applied to the soil twice each growing season successfully controlled root rot for the first 2 seasons, but there was a significant resurgence of decline symptoms after the third consecutive season of use. 
