Basalt dust and cow urine in the septoriosis severity and defense enzymes activity on tomato

Abstract

Rock waste and cow urine have been commonly used in ecologically based production systems,
however there is still little research on its effects. The objective of this work was to
evaluate the basalto dust and cow urine in the control of septoriosis (Septoria lycopersici) and
induction of defense enzymes in tomato. The experiment was carried out under a greenhouse
under a factorial scheme with (1kg / m2) or without basalt dust incorporated into the soil, and
the concentrations of 0, 1, 3 and 6% of tanned cow urine applied to the aerial part. A completely
randomized design with five replications was used. The activity of peroxidases and polyphenoloxidases,
and the severity of septoriosis, were evaluated. Basalt dust did not promote
alteration in the enzymes induction and the severity of the disease. Cow urine promoted a
linear increase in peroxidase activity, although it did not affect the other variables. The results
indicate the potential of cow urine to activate defense enzyme.