Análise espaço-temporal do patossistema do anel vermelho em palma-de-óleo na Amazônia oriental.

Abstract

The oil palm (Elaeis guineensis Jacq.) Comes from West Africa in the Gulf of Guinea region. It was brought to Brazil in the colonial period, 17th century, by slaves and its cultivation began in Brazil in the 70's, being a tropical perennial species of African origin that best expresses its production potential under high temperature, solar radiation, high precipitation and humidity. relative air. Among the main diseases that attack this palm and other palm trees of economic importance, the Red Ring disease is one of the most severe and lethal, causing the plant to death and endangering the development of plantations in the region. Thus, the objective was to evaluate the spatial and temporal distribution of Anel Vermelho and R.Palmarum in conventional oil palm planting in the municipality of Thailand, state of Pará, in the production area of AGROPAR Farm, belonging to AGROPALMA SA, through monthly data from a Historical Series from 2014 to 2018, using as a tool the Geostatistics. To evaluate the dispersion of the Red Ring and R.Palmarum we used the presence and absence method, being (1) for presence and (0) for absence. Thus, semivariograms were generated and the theoretical models were tested: Spherical, Gaussian, exponential and linear (pure nugget effect). The semivariograms obtained were submitted to the estimated Kriging for the preparation of the Patossystem dispersion maps. Through semivariograms it was observed that the model that best adjusted to the spatial distribution of the red ring was the Gaussian, with range values for the experimental area ranging from 690 m to 870 m. For R.Palmarum distribution, the best fit models were spherical and exponential, with range values from 860 m to 4990 m and R. palmarum infestation is preferentially located on the outskirts of the blocks.