Citrus Tree Stresses: Effects on Growth and Yield

Although Florida is known for its plentiful sunshine and rainfall, commercial citrus can experience stress at certain times of the year whenever growth conditions are not optimal. For example, drought stress can occur whenever soil water is not adequate or whenever the evaporative demand of the air is high. Drought is one of the most formidable stresses. It alters a tree's ability to take up nutrients from soil and changes the way the tree produces roots, shoots, leaves and fruit. To strive for consistently high commercial yields, grove managers must incorporate strategies to minimize the negative effects of drought. The objectives of this document are to: a)Explain how citrus trees respond to changes in availability of water and nutrients; b)Discuss plant-stress situations and their effects on citrus growth and productivity; and c)Discuss the balance between roots and shoots. The target audience for this document dealing with citrus responses to drought conditions includes: Certified Crop Advisers, citrus producers, agrochemical and equipment industry representatives, and other parties interested in citrus management practices.

The link address is: http://edis.ifas.ufl.edu/hs393