Abstract
The objective of this study was to evaluate the effect of salinity of irrigation water in the biomass of peanut plants in substrates with organic fertilizers. The work was conducted in the experimental area of the weather station, UFC, Fortaleza, in the period September-November 2013. Experimental design was completely randomized in a 4x2 factorial design, referring to the organic fertilizers applied on the substrate (T1 = sand + aloof, T2 = sand + aloof + bovine biofertilizer with aerobic fermentation, T3 = sand + aloof + bovine biofertilizer with anaerobic fermentation and T4 = sand + aloof + crab biofertilizer), with two levels of salinity (1.0 and 4 0 dS m-1) and 5 replicates. The trial was conducted in 10-liter pots, one plant per pot. 45 days after sowing, the following variables were analyzed: number of leaves, plant height, leaf area, shoot dry matter, root dry matter and total dry matter. Crab biofertilizer presented itself efficient in improving the production of peanut in saline water. The substrate with bovine biofertilizer with aerobic fermentation was more efficient at the leaf area and the number of leaves in irrigation with low and high salinity water. The substrate containing bovine biofertilizer with anaerobic fermentation exerts mitigating effect to the height of plants irrigated with low water and high salinity.
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