Abstract

Ratoon stunting disease (RSD) is one of the most economically damaging disease if not the most damaging to sugarcane worldwide with yield losses ranging from near zero to 30% or more depending on variety and growing conditions. Historially, the standard control practice has been heat-therapy of seedcane in conjunction with disease-free narseries in order to produce RSD-free seedcane for planting commercial fields. Even with the best management systems RSD-free seedcane is difficult to maintain because the pathogen is easily spread by knives and machines used in cutting the sugarcane stalks for harvests and planting. Routine disease diagnosis, screening programs for resistant cultivars and research on RSD was hampered until the development of reliable assays. Several serological assays are presently used to routinely diagnose and monitor the disease in seedcane nurseries. The selection of resistant sugarcane clones is now possible and should become another mechanism in controlling RSD.

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