Table 1. Area under the Concentration vs Time Curve (AUC) as the Approximation for Phosphonate Availability in Leaves and Petioles of Each Variant [mg × wks/kg]b.
| |
1 | 2 | 3 | 4 | 5 | 6 | |
|---|---|---|---|---|---|---|---|
| |
none in 2021 | none in 2021 | 4 × 0.4%, 2021 | 3 × 0.54%, 2021 | 4 × 0.4%, 2021 | 3 × 0.54%a, 2021 | |
| variant, treatment 2021 and 2022 | 4 × 0.4%, 2022 | 3 × 0.54%, 2022 | 4 × 0.4%, 2022 | 3 × 0.54%, 2022 | none in 2022 | none in 2022 | |
| 2021 | leave | n.d. | n.d. | 1012 ± 169a | 1182 ± 137a | 946 ± 259a | 32 ± 6b |
| petiole | n.d. | n.d. | 769 ± 75a | 850 ± 102a | 691 ± 90a | 119 ± 16b | |
| 2022 | leave | 1920 ± 438a | 822 ± 200b | 2210 ± 475a | 868 ± 258b | 181 ± 10c | |
| petiole | 1253 ± 58a | 930 ± 217a,c | 2439 ± 271b | 1484 ± 400a | 791 ± 32c | ||
a
Application via soil. n.d., no phosphonate detected.
b
Different letters indicate significant differences of means in each row (p < 0.05).