fruit leading to black mold growth Prune branches to open them up to light, sun, and which limits photosynthesis & makes predators. fruit look unappealing. Sanitation: Prune off and destroy heavily infested branches. Manage ants that tend the scales by placing tanglefoot around the tree trunk. Citrus Alternariosis (Alternaria citri) Prevent plant stress and keep fruit healthy and Pre-harvest fungicide treatments are usually that enters stress cracks emanating free from damage. ineffective. from navel Delay harvest until infected fruit have fallen to Postharvest treatments with growth keep them from becoming mixed with healthy fruit regulators/herbicides 2,4-D has provided some at harvest (but do not exceed optimum maturity for control. healthy fruit). Sanitation: Remove from orchards and destroy infected fruits. Avoid mechanical injury. Use pre-harvest application of fixed copper. Post-harvest Gray mold/ Botrytis rot (Botrytis cinerea) Protect against frost and brown rot. Use post-harvest application of fludioxonil or pyrimethanil. Prune regularly to open up tree canopy.
fruit leading to black mold growth which limits photosynthesis & makes fruit look unappealing. Prune branches to open them up to light, sun, and predators. Sanitation: Prune off and destroy heavily infested branches. Manage ants that tend the scales by placing tanglefoot around the tree trunk. Citrus Alternariosis (Alternaria citri) that enters stress cracks emanating from navel Prevent plant stress and keep fruit healthy and free from damage. Delay harvest until infected fruit have fallen to keep them from becoming mixed with healthy fruit at harvest (but do not exceed optimum maturity for healthy fruit). Sanitation: Remove from orchards and destroy infected fruits. Pre-harvest fungicide treatments are usually ineffective. Postharvest treatments with growth regulators/herbicides 2,4-D has provided some control. Post-harvest Gray mold/ Botrytis rot (Botrytis cinerea) Avoid mechanical injury. Protect against frost and brown rot. Prune regularly to open up tree canopy. Use pre-harvest application of fixed copper. Use post-harvest application of fludioxonil or pyrimethanil.
49856.docx