and dry weight of leaf and roots were determined and leaf areawas
measured. The total numbers of fluorescent pseudomonads in the
nutrient solution of the different treatments were monitored by
viable counts on KB agar 1 h after addition of the strain, after 24 h
and after six days. The experiment was repeated twice and data
were analysed by analysis of variance with fixed effects followed by
Tukey’s multiple comparison test with differences considered
significant at P < 0.05 (Minitab, version 15).