03
Feb
Avocado Root Rot Treatment. Moderate amounts of nitrogen promote good growth that helps avocado better tolerate root rot. Avocado grove cultural management practices to help prevent root rot disease Provide favorable soil conditions avocado roots die if continuously wet so soils need to be loose and free draining. Including dark roots in the sample will lower the result. Against Hass avocado root rot.
Phosphonate fungicide is the best chemical root rot treatment both as a regular preventative treatment and to cure the disease. Also dont plant avocado trees or other susceptible plants if soil is known to be infected. And remember it is not just the amount applied at an irrigation but the timing that is important as well. Use certified disease-free nursery stock. 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. Avocado tree shoots die.
My Hass avocado tree that I purchased recently has been looking bad.
It is essential that you maintain an annual or in some cases biannual treatment with phosphonate. Avocado grove cultural management practices to help prevent root rot disease Provide favorable soil conditions avocado roots die if continuously wet so soils need to be loose and free draining. The application of potassium phosphite combined or not with dolomitic lime or gypsum enables the partial recovery Hass avocado plants affected by the disease. Soil applications of dolomitic limestone. The first signs of the disease are observed in the tree canopy leaves are small pale green often wilted with brown tips and drop readily. The highest root density was observed in plants sprayed with potassium phosphite and applied with dolomitic limestone applications to the soil T6 compared with those treated with dolomitic limestone T3 potassium phosphite T4 and the control plants T1.