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The correct nutrition by the occasion of implantation is essential for the increasing and maintaining the productivity of the planted forests and one of the management options used to minimize the effects of variability in productivity is the precision agriculture, which with the use of geostatistical tools aid in the management of the crop and represents an important factor in the economy and more rational employment of agricultural inputs. The aim of this study was to evaluate the influence of liming on the spatial variability of leaf chemical composition (N, P, K, Ca, Mg and S) and at the height of the spontaneous hybrid of Eucalyptus urophylla clone I 144, at six months after planting, in a Quartzarenic Neosol in a low altitude cerrado zone. The experiment was conducted in an area belonging to the Bom Retiro Farm, property of Eldorado Brazil Celulose, between the months of March to September 2014, located in the city of Agua Clara, MS. The geostatistical mesh installed in a regular grid for data collection was comprised of 50 points with a sample spacing of 9.0 x 7.5 m. The studied attributes were the plant height and leaf nutrient content (N, P, K, Ca, Mg and S) of the eucalyptus. The data were analyzed by descriptive statistics and spatial variability was determined by geostatistical methods such as calculating the semivariogram and use of interpolated maps by ordinary kriging. The liming had influenced the leaf content of nitrogen, phosphorus, calcium and magnesium of Eucalyptus urophylla clone I 144 and the leaf magnesium was the only attribute that presented spatial dependence, which enables the management located at an early stage. Key words : geostatistics, eucalyptus nutrition, limestone, precision agriculture. INFLUENCIA DA CALAGEM NA VARIABILIDADE ESPACIAL DA COMPOSICAO QUIMICA FOLIAR E NO CRESCIMENTO INICIAL DO EUCALIPTO RESUMO: A correta nutricao por ocasiao da implantacao e essencial para o aumento e manutencao da produtividade das florestas implantadas e uma das opcoes de manejo utilizadas para minimizar os efeitos da variabilidade na produtividade e a agricultura de precisao, que com o uso de ferramentas geoestatisticas auxiliam no manejo da lavoura e representa fator importante na economia e emprego mais racional dos insumos agricolas. O objetivo deste trabalho foi avaliar a influencia da calagem na variabilidade espacial da composicao quimica foliar (N, P, K, Ca, Mg e S) e na altura do hibrido espontâneo de Eucalyptus urophylla clone I 144, aos seis meses apos o plantio, num Neossolo Quartzarenico em area de cerrado de baixa altitude. O experimento foi conduzido em area pertencente a Fazenda Bom Retiro, propriedade da Eldorado Brasil Celulose, entre os meses de marco a setembro de 2014, localizada no municipio de Agua Clara, MS. A malha geoestatistica instalada em grade regular para coleta dos dados foi constituida de 50 pontos com espacamento amostral de 9,0 x 7,5 m. Os atributos estudados foram a altura de planta e os teores foliares de nutrientes (N, P, K, Ca, Mg e S) do eucalipto. Os dados foram analisados pela estatistica descritiva e variabilidade espacial foi determinada por metodos geoestatisticos como calculo do semivariograma e uso de mapas interpolados por krigagem ordinaria. A calagem influenciou os teores de nitrogenio, fosforo, calcio e magnesio foliar do Eucalyptus urophylla clone I 144 e o magnesio foliar foi o unico atributo que apresentou dependencia espacial, o que possibilita o manejo localizado em estadio inicial. Palavras-chave: geoestatistica, nutricao de eucalipto, calcario, agricultura de precisao.

LIMING INFLUENCE ON THE SPATIAL VARIABILITY OF THE LEAF CHEMICAL COMPOSITION AND IN THE INITIAL GROWTH OF THE EUCALYPTUS