Evaluation of phosphonic (phosphorous) acid for the control of Phytophthora cambivora on almond and cherry in South Australia
- 14 Downloads
Phosphonic acid applied as a soil drench, a foliar spray or a trunk injection before infection prevented the development of cankers in almond and cherry trees inoculated with Phytophthora cambivora. Foliar applications of 2 g phosphonic acid/L in autumn and spring were an effective and practical treatment. Trunk injections were also effectively but in some cases caused severe leaf scorch and leaf drop.