Table 5.
Effects of C. crenata dried leaf powder on plant number and dry weight of weeds in the natural soil in laboratorial trials.
| Concentration (g) | Weed Number (Plants) | Dry Weight (mg) | ||||
|---|---|---|---|---|---|---|
| Monocots | Dicots | Total | Monocots | Dicots | Total | |
| Control | 9.0a ± 0.6 (0.0) | 19.7a ± 6.6 (0.0) | 28.7a ± 0.3 (0.0) | 7.8b ± 0.5 (0.0) | 5.0a ± 0.5 (0.0) | 12.8b ± 0.8 (0.0) |
| 0.10 | 7.3ab ± 0.9 (18.9) | 20.7a ± 2.7 (−5.1) | 28a ± 2.5 (2.4) | 7.9b ± 0.1 (−0.9) | 5.3a ± 0.6 (−7.4) | 13.2b ± 1.3 (−3.2) |
| 0.25 | 4.3b ± 0.9 (52.2) | 8.3b ± 0.9 (57.9) | 12.7b ± 1.8 (55.7) | 3.4c ± 0.3 (56.4) | 2.1b ± 0.2 (57.7) | 5.5c ± 0.2 (57.0) |
| 0.50 | 5.7b ± 0.3 (36.7) | 6.3b ± 1.3 (68.0) | 12b ± 1.5 (58.2) | 17.6a ± 0.8 (−125.6) | 2.4b ± 0.3 (51.0) | 20.0a ± 0.9 (−56.3) |
Values are means ± SE (standard errors); Monocot weeds: Cyperus microiria Steud, Fimbristylis littoralis Gaudich, Digitaria violascens Link; Dicot weeds: Eclipta prostrata L., Stellaria media (L.) Vill., Cardamine flexuosa With; Values in the parentheses are percentage of inhibition over control; Minus values are percentage of promotion over control; Means with similar letters in a column are not significantly different (p < 0.05).