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<p>The movement of seed- and soil-applied fluopyram was evaluated in soil columns. The nematicide was sampled at three soil depths and used in a nematode motility bioassay. Based on <italic>Meloidogyne incognita</italic> mortality, the downward movement of soil-applied fluopyram was affected by soil type and application method. No nematode-toxic levels of soil-applied fluopyram were detected past 5 cm depth in sandy loam soil compared to 10 cm depth in sandy soil. A slower rate of water infiltration had little impact on the movement of soil-applied fluopyram in sandy soil, but did affect the movement of soil-applied abamectin. In the seed-applied nematicide experiments, a greater effect on nematode mortality was observed at the 0 to 5 cm depth in sandy soil with fluopyram- than abamectin-treated cotton seed, whereas a similar effect was observed with soybean seed. No effect on nematode motility was observed with other seed-applied nematicides, thiodicarb, and <italic>Bacillus firmus</italic>. Overall, soil-applied fluopyram had a greater effect on <italic>M. incognita</italic> mortality at 10 cm depth in sandy soil than seed-applied fluopyram. These data provide a better understanding as to the movement of fluopyram as affected by soil type, water infiltration rates, and application methods.</p>
</abstract>

The movement of seed- and soil-applied fluopyram was evaluated in soil columns. The nematicide was sampled at three soil depths and used in a nematode motility bioassay. Based on Meloidogyne incognita mortality, the downward movement of soil-applied fluopyram was affected by soil type and application method. No nematode-toxic levels of soil-applied fluopyram were detected past 5 cm depth in sandy loam soil compared to 10 cm depth in sandy soil. A slower rate of water infiltration had little impact on the movement of soil-applied fluopyram in sandy soil, but did affect the movement of soil-applied abamectin. In the seed-applied nematicide experiments, a greater effect on nematode mortality was observed at the 0 to 5 cm depth in sandy soil with fluopyram- than abamectin-treated cotton seed, whereas a similar effect was observed with soybean seed. No effect on nematode motility was observed with other seed-applied nematicides, thiodicarb, and Bacillus firmus. Overall, soil-applied fluopyram had a greater effect on M. incognita mortality at 10 cm depth in sandy soil than seed-applied fluopyram. These data provide a better understanding as to the movement of fluopyram as affected by soil type, water infiltration rates, and application methods.

Movement of seed- and soil-applied fluopyram in soil columns

Journal of Nematology

This work is licensed under the Creative Commons Attribution 4.0 International License.

running-head

The movement of seed- and soil-applied fluopyram was evaluated in soil columns. The nematicide was sampled at three soil depths and used in a nematode motility...

Movement of seed- and soil-applied fluopyram in soil columns

Article Category: Arts & Humanities

Publié en ligne: 31 juil. 2019

Pages: 1 - 8

Reçu: 28 déc. 2018

DOI: https://doi.org/10.21307/jofnem-2019-045

© 2019 Travis R. Faske et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.