Are macronutrients and micronutrients therapeutic for restoring performance of trees affected by citrus greening? A discussion of current practices and future research opportunities

Abstract

Citrus greening, also called Huanglongbing (HLB), has affected citrus production globally. In Florida, the disease has decimated citrus production area and overall fruit yields. Emerging results show that some nutrients applied in a balanced and constant nutrition (BCN) program alleviate tree stress by improving root health, canopy size and tissue nutrient concentration. In this paper, we discuss the current strategies for managing citrus in Florida, and roles of macro- and micronutrients in citrus and other crops. Further, we discuss the role of macro- and micronutrients in potentially restoring root health and tree performance. We wrap up by discussing future research opportunities on the health and nutrition of HLB-affected citrus trees.

Keywords:

• Citrus sinensis
• Huanglongbing
• macronutrient
• micronutrients
• root health

Disclosure statement

The authors declare no conflict of interest.

Additional information

Funding

Funding was provided by the Citrus Research and Development Foundation and USDA-NIFA Hatch project CRC-FLA-005593.