Table 1.
Nutrient composition content and pH (means ± SD) of six aquatic weed extracts and the aqueous ethanol control (as determined by the Soil, Water and Nutrient Management Laboratory of UF at Belle Glade).
Fig 1.
Schematic aspect of a serial dilution plate to determine the concentration of a bacterial suspension.
0 = 50 μl drop of undiluted bacterial suspension; 1/10-1/106 = 1/10-1/106 diluted drops of a bacterial suspension.
Fig 2.
Leaf disc before and after 24 hours of fall armyworm release.
Table 2.
Comparison of bacterial colony numbers (colony forming units/ml or cfu/ml) of three bacterial isolates on dilution plates of basal medium (BM) and BM supplemented with aquatic weed extracts (1:100 dilution).
Table 3.
Survival rate and RGR of the fall army worm in dip bioassays with different treatments.
Table 4.
Survival rate and RGR of the fall armyworm in different treatments (a negative value indicates that the FAW lost weight during the bioassay).
Table 5.
Leaf area consumed by FAW larvae 24 and 48 hours after application of different treatments in leaf disc bioassays.
Fig 3.
Effect of aquatic weed powder on germination rate of common ragweed.
Vertical bars represent standard errors.
Fig 4.
Effect of aquatic weed powder on biomass of nutsedge.
Vertical bars represent standard errors of the mean. Bars designated by different lowercase letters are significantly different according to Tukey-Kramer adjustment (P ≤ 0.05).
Fig 5.
Effect of aquatic weed powder on germination rate of amaranth.
Vertical bars represent standard errors.
Fig 6.
Effect of aquatic weed powder on biomass of amaranth.
Vertical bars represent standard errors of the mean. Bars designated by different lowercase letters are significantly different according to Tukey-Kramer adjustment (P ≤ 0.05).
Fig 7.
Effect of aquatic weed powder on germination rate of common ragweed.
Vertical bars represent standard errors.
Fig 8.
Effect of aquatic weed powder on biomass of common ragweed.
Vertical bars represent standard errors of the mean. Bars designated by different lowercase letters are significantly different according to Tukey-Kramer adjustment (P ≤ 0.05).
Fig 9.
Effect of aquatic weed extracts on germination rate of amaranth and common ragweed.
Vertical bars represent standard errors of the mean. Bars designated by different lowercase letters are significantly different according to Tukey-Kramer adjustment (P ≤ 0.05).