ISHS Acta Horticulturae 529: III International Pineapple Symposium
EFFECT OF TEMPERATURE AND RAINFALL ON THE INCIDENCE OF FUSARIUM SUBGLUTINANS ON PINEAPPLE FRUITS |
| Authors: | A. Matos, J. Cabral, N. Sanches, R. Caldas |
| Keywords: | temperature, rainfall, Fusarium subglutinans, fusariosis disease |
| Abstract:
Fusarium subglutinans, the causal agent of the pineapple fusariosis, is the major constraint of that crop in Brazil. The pathogen is able to infect asexual propagative material, plants and fruits, inciting high production losses, that vary according to the time of harvest, thus showing a strong seasonal effect on the disease incidence. This work was carried out during a four year period aiming at studying the effect of environmental conditions on the incidence of F. subglutinans on pineapple fruits, cultivar Pérola. Data of temperature and rainfall were recorded in thermohygrograph and pluviograph, respectively, compared with percentage of infected pineapple fruits, and submitted to simple correlation analysis. It was found that the higher the number of hours of temperature below 23°C during flowering, and rainfall from flowering induction treatment to harvest, the higher the disease incidence on fruits. On the other hand, increasing the number of hours of temperature over 28°C during the inflorescence development decreases the fusariosis incidence on pineapple fruits. | |
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