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Controlled Release Fertilizer (CRF) is an effective way to reduce the effects of HLB infection in many commercial varieties of citrus. In our test plot, the trees have not been treated with foliar sprays of any kind for at least 3 growing seasons. This format allows us to derive conclusions about the effects of CRF, and the natural tolerance of varieties to HLB. |
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| Valencias 9/12/2015 No Spray 2 Years |
| Same Valencias 8/2/2016 No Spray 3 Years |
| Psyllid Population in Block Receiving Spray Program, in active CHMA |
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| Psyllids in Unsprayed Trees. Note Tamarixia radiata, released during flush |
| August 2016 - Navels on Sour Orange in Weirsdale after 7 months on Controlled Release Fertilizer program. Trees were declining from HLB. Only one PFD spray and one Summer Oil this season. |
| Click on brackets in lower left of video windows to view in full screen mode |
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| Click on Image to View Larger |
