Agronomic quality of the carrot under irrigation water salinity levels and organic fertilization

Abstract

This research aimed to evaluate the to evaluate the agronomic quality of the carrot under irrigation water salinity levels and types of organic fertilization through multivariate analysis. The experiment was carried out in a greenhouse at the Federal University of Campina Grande (UFCG). The treatments were five salinity levels (S1: 0.7, S2: 1.4, S3: 2.1, S4: 2.8, S5: 3.5 dS m^-1) and two types of fertilization (soil without organic fertilization and soil with organic fertilization - earthworm humus). The experimental design was in randomized blocks with 3 replicates. At 90 days after emergence were evaluated the length plant height, leaf number, leaf area, lower and upper root diameter, fresh and dry root mass and total solids content (° Brix). The use of multivariate techniques proved to be a useful tool in the study between correlations of different irrigation water salinity levels and types of fertilization in order to verify the effect on the agronomic quality of carrot. The salinity level of 0.7 dSm^-1 associated with fertilization with earthworm humus favored the agronomic quality of the carrot roots. The effect of salinity on high levels was attenuated by organic fertilization.