Abstract
The coccid Praelongorthezia praelonga (Douglas, 1891) has become a sucking-pest of great importance to the citrus industry in the State of Para, causing direct and indirect damage to production. The objective of this study was to evaluate the population dynamics of coccid in citrus orchards in agroforestry and monoculture cropping systems. The experimental area is located in the municipality of Capitao Poco, State of Para, Brazil, where 12 samplings were performed between September 2008 and October 2009, evaluating the presence or absence of the pest in the orange trees from both production systems. Analysis of variance was performed to compare the two planting systems and correlation analysis was used to assess the abiotic parameters (temperature and rainfall). Results showed that P. praelonga was present in both cropping systems – agroforestry and monoculture, in every month of the evaluation period. The agroforestry system presented lower incidence of plants with P. praelonga compared to the monoculture system, and the average temperature influenced the pest population control.
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