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Revista Brasileira de Fruticultura

versão impressa ISSN 0100-2945versão On-line ISSN 1806-9967


CALGARO, Hemerson Fernandes; FERNANDES, Francisco Maximino; BOAVENTURA, André Luís de Assis  e  TARSITANO, Maria Aparecida Anselmo. Effect of ways of lime application and micronutrients and make a comparative analysis of treatments costs in a orange orchard var. 'Natal'. Rev. Bras. Frutic. [online]. 2007, vol.29, n.3, pp.639-644. ISSN 0100-2945.

In agreement with the Institute Fnp (2005), the production Brazilian of citrus is of 17,7 million tons year-1 occupying 1 million of ha approximately in the Brazilian territory and of this total one, 810 thousand ha are located in the State of São Paulo. Most of the Brazilian soils, besides those where the citric orchards were installed, it presents acid reaction. This is, without a doubt, the main unfavorable condition of the soils and one of the factors that harm the production in tropical soils. The present work had the objective to study the effect of different ways of lime application, micronutrients and make a comparative analysis of treatments costs in a orange. The experiment was develop at Morumbi Farm, town country of Estrela D'Oeste, in a Ultisol. The variety of orange used was the 'Natal' incorporated at lemon, with six years old and spaced at 5 x 8 m. The outline was in a subdivided plot, with 3 repetitions, with 5 main treatments [without lime application, lime total need (LT) incorporated; LT without incorporation; 1/2 LT in the first year + 1/2 LT in the second year; 1/3 LT in the first year + 1/3 LT in the second year + 1/3 LT in the third year] and 2 secondary treatments [micronutrients in the soil (FTE-BR 12: 11,5% de ZnO e B2O3; 1% CuO; 5,4% de Fe2O3; 5,5% de MnO2; 0,2% de MoO3); micronutrients in the leaves (sulfate of zinc to 0,5% and boric acid a 0,08%)], distributed in randomblocks. There is no significant effect in the ways of application of lime and micronutrients in the evaluated parameters (production, total solid soluble (TSS), total acidy, chemical analysis of the soil); to medium mass of the fruit had a significative effect only in the first year, with the liming in a single dose and without incorporation, and micronutrients in the soil. There was not significant effect of the manners of application of the lime and of the micronutrients for production and medium mass of the fruits of the orange and the liquid income was positive in all of the treatments and the treatment 5 [1/3 of lime total need (LT) in 1º year + 1/3 of the LT in 2º year + 1/3 of the LT in 3º year] presented the best accumulated value (U$ 3721,85 ha-1).

Palavras-chave : Citrus sinensis; lime (liming); fried; fertilize through foliating; production cost.

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