3.3. Chlorophyll concentration
Chlorophyll a concentration was increased with Pentakeep application compared to the control. There was no significant difference in chlorophyll a concentration between 0.04 and 0.08% of Pentakeep treatments. Chlorophyll b, on the other hand, showed a higher concentration only at 0.08% Pentakeep treatment than control and 0.02% Pentakeep treatments (Table 3). Total chlorophyll concentration followed almost a similar pattern to chlorophyll a (Table 2) Chlorophyll a/b ratio increased with Pentakeep application compared to control. There was no significant difference in this ratio among Pentakeep treatments.