| Abstrakt: |
The effect of fluoride on the growth and biochemical parameters was examined under the biocharmixed soil. A pot experiment was conducted, in which 0mg/L, 15 mg/L, 30 mg/L, 45 mg/L and 60 mg/L of fluoride concentrations and two levels of wheat straw biochar (WSBC) at the rate of 3% and 5% by (w/w) were supplied to the plants at time of sowing seed. Growth and biochemical parameters including plant biomass, leaf surface area, plant height, photosynthesis, proline, ascorbic acid, phenolic content, peroxidase activity, etc. were studied. After 60 days harvest, it was observed that fluoride produced significant reduction in all parameters (plant height, plant biomass and leaf surface area) of plant. Maximum reduction in case of growth parameters was noticed. It was calculated that 55% leaf surface area under 3% of biochar treatment was recorded while at 5% of biochar the reduction rate reduced up to 21% as compared to that of control treatment. Similarly photosynthetic rate, transpiration rate and stomatal conductance showed the reduction of 53%, 67% and 54%, respectively, at 3% of biochar while at 5% these reduced to 41%, 52%, 44% as compared to that of control at P=0.05. Fluoride stress also increased the lipid peroxidase, phenolic content and proline but its rate of increase was lesser at 5% of biochar as compared to that of control. Overall, it was also observed that adverse effect of fluoride was lesser at 5% of biochar as compared to that of 3% of biochar, which indicated that intensity of fluoride severity, can be minimized by increasing concentration of biochar for getting better yield of crops and vegetables. [ABSTRACT FROM AUTHOR] |
