Field Infection of Virus-Free Sugarcane by Sugarcane Yellow Leaf Virus and Effect of Yellow Leaf on Sugarcane Grown on Organic and on Mineral Soils in Florida
| Autor: | Martha Hincapie, Michael Irey, Philippe Rott, Chris LaBorde, Chunyan Wei, Claudia Kaye, Wardatou Boukari |
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| Rok vydání: | 2019 |
| Předmět: |
P33 - Chimie et physique du sol
Plant Science Biology Crop Soil Yield (wine) F03 - Production et traitement des semences Cultivar Cane Semence H20 - Maladies des plantes Plant Diseases Minerals Soil organic matter fungi Sowing food and beverages Soil type biology.organism_classification Virus Saccharum Type de sol chimique Luteoviridae Rendement des cultures Agronomy Type de sol écologique Soil water Florida Canne à sucre Agronomy and Crop Science |
| Zdroj: | Plant Disease |
| ISSN: | 0191-2917 |
| Popis: | Sugarcane yellow leaf virus (SCYLV), the causal agent of yellow leaf, is widespread in Florida. Two field trials were set up, one on organic soil and one on mineral soil, to investigate the rate and timing of sugarcane infection by SCYLV under field conditions and the effect of the virus on yield. Each trial consisted of plots planted with healthy or SCYLV-infected seed cane of two commercial cultivars. Virus prevalence varied from 83 to 100% in plots planted with infected seed cane regardless of cultivar, location, and crop season. On organic soil, plants of virus-free plots became progressively infected in plant cane and first ratoon crops. On mineral soil, healthy sugarcane became initially infected in the first ratoon crop. After three crop seasons, the highest SCYLV prevalence rates were 33 and 7% on organic and mineral soils, respectively. No significant negative effect of SCYLV on yield was found in plant cane crop regardless of cultivar and soil type. However, yield reductions in ratoon crops varied from nonsignificant to 27% depending on cultivar and soil type. Low virus prevalence observed after three crop seasons suggested that planting virus-free seed cane should limit the impact of SCYLV on sugarcane production in Florida. |
| Databáze: | OpenAIRE |
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