Citrus Production Maintained in a Florida Grove using the Boyd Nutrient/SAR Foliar Spray Program

Fruit production in Maury Boyd’s Orange Hammock Citrus grove in Felda has maintained its production level since being confirmed with citrus greening disease known as Haunglongbing (HLB) in 2006.  The trees have been receiving the Boyd cocktail mix of nutrients and SARs (Systemic Acquired Resistance) since HLB was confirmed.  The grove is now 95% infected with HLB.  The grove consists of ‘Valencia’ and ‘Hamlin’ oranges on Swingle citrumelo and Carrizo citrange rootstocks.  The mean yield the six years before HLB for ‘Hamlin’ was 569, and after finding HLB has been 576 boxes per acre.  Mean yield for ‘Valencia’ the six years before HLB was 460, and after HLB has been 454 boxes per acre.