Balanço de sais e o efeito na produção de ‘tahiti’ enxertada em genótipos de citros

Abstract

he use of saline water for irrigation is a strategy that enables agricultural production in regions with water limitation. However, the crop must present tolerance to salinity and a viable economic yield, and in the case of sensitive crops such as citrus this technique is possible with the use of genotypes with greater tolerance to salt stress. Thus, the objective was to analyze the salinity in the plant and the production of citrus genotypes irrigated with water of different levels of electrical conductivity in the first year of production. To this end, an experiment was conducted using a randomized block design with treatments in subdivided plots, with 13 citrus genotypes grafted with the acid lime 'Tahiti' in the plot and, in the subplot, the irrigation with water of three salinities, 0.14 dS m-1, 2.4 dS m-1 and 4.8 dS m-1. The data obtained from the soil and plant samples were subjected to univariate and multivariate statistical analysis. The genotypesLCRSTC at Salinity 3, HTR - 069 at Salinity 3, TSKC x (LCR x TR) - 040 at Salinity 3, TSKC x (LCR x TR) - 040 at Salinity 1, HTR - 069 at Salinity 1, TSKC x (LCR x TR) - 059 at Salinity 1 are highlighted among the genotypes in the environments; The genotypes Indio, San Diego and TSKC x (LCR x TR) - 059, when irrigated with water of 4.8 dS m-1 are more representative of the average result; The environments with more relevance in this study were CaSoil, NaSoil, MgSoil, CEes, RAS, Na, PF and NFPL, being the RAS the ideal for representation of the results.