WebThis treatment is effective on trees of a consistent size, but research continues on effective dosages for trees of different sizes. Phosphite treatment can be effective against individual kauri trees, but will not kill the Phytophthora pathogen in the soil, potentially allowing it to continue to spread to healthy trees nearby. Webphosphite/80 cm spacing) at Puketotara has shown substantial canopy decline over the first 3 years (from a ‘2’ to a ‘4’ on the Kauri Dieback Programme canopy scoring scale), but seems to have stabilised recently. There are no obvious trends related to treatment in assessments of canopy health,
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WebMar 10, 2024 · The only chemical treatment that has been used in 46 the field is phosphite (phosphorous acid). In trunk injection field trials, phosphite 47 improved canopy health, and reduced lesion activity and expansion (Horner et al. 2015). 48 However, potential phytotoxic effects (Bradshaw et al. 2024; Horner et al. 2015) and the WebApr 3, 2014 · Kauri Dieback Symposium 30 November 2013Talk 9 of 13Kauri dieback, caused by Phytophthora taxon Agathis (PTA) is a serious threat to the health and survival ... inch kochel ays sere 148
CLOSE THE RANGES TO SAVE WAITAKERE KAURI - Tree Council
Webconducted the first large-scale application of phosphite as a treatment for kauri dieback with more than 15,000 kauri treated and assessed to enable long-term impact monitoring … WebNov 18, 2024 · Phytophthora species cause disease and devastation of plants in ecological and horticultural settings worldwide. A recently identified species, P. agathidicida, infects and ultimately kills the... WebJan 8, 2015 · To date, phosphorous acid (phosphite) is the only chemical that has been used on kauri trees affected by P. agathidicida, and while this has proved an effective … inch kochel ays sere 18