Modelo predictivo de los cambios poblacionales de Thrips tabaci lindeman (thysanoptera: thripidae) en el cultivo de la cebolla (Allium cepa l.) en Cuba
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Abstract
Thrips tabaci populations on the onion plants are located basically in pseudo stems and they cause damages inside unfurled and sprouting leaves, where they become visible with the foliar growth. In that way the presence of the pest and their damages are evidenced when both them have reached such a degree of intensity that it may be late for achieving the hope effectiveness of control measures. A study carried out on 18 onion field plots planted in Havana and Sancti Spíritus provinces during three years, gave the information about onion thrips dynamics along crop cycle, and with that information a predictive model of thrips populations growth could adjusted with the consideration of the relations among biological parameters and climatic variables that condition them. The statistical technique of regression ridge was used with data obtained through sequential samplings in field plots. A model to predict the variations in pest behavior, which facilitates to take decisions for T. tabaci management in onion field, was obtained.
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