Abstract

BATISTA DOS SANTOS, Delfran et al. Production and physiological parameters the peanut as a function of salt stress. Idesia [online]. 2012, vol.30, n.2, pp. 69-74. ISSN 0718-3429.  http://dx.doi.org/10.4067/S0718-34292012000200009.

The present study aims to evaluate the effect of water salinity from irrigation on the electrical conductivity of the saturated extract of soil (CEes) and the alterations of the physiological parameters and productivity on peanut cultivation. The experiment was conducted in a randomized block design with six treatments and four replications. The treatments consisted of a control with low electrical conductivity water (0.1dS m^-1) and five leaching fractions (0.4; 0.3; 0.2; 0.1; and 0.05) with water of 3 dS m^-1. The results showed that the CEes decreased significantly with the increase of the leaching fractions; the decrease of the leaf osmotic potential in the peanut plant implied the reduction of productivity; the content chlorophyll and the total dry matter decreased significantly with the increase of the CEes.

Keywords : Arachis hypogaea; leaching fractions; osmotic potential.