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Volume 16 Issue 2
Apr.  2025
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ZHONG Yuqing, JIAO Bin, LYU Baoqian, LUO Yanping, LU Hui, TANG Jihong, ZHANG Qikai. Evaluation of the effectiveness of chlorfenapyr-coated maize seeds for the control of Spodoptera frugiperda[J]. Journal of Tropical Biology, 2025, 16(2): 236-242. doi: 10.15886/j.cnki.rdswxb.20240129
Citation: ZHONG Yuqing, JIAO Bin, LYU Baoqian, LUO Yanping, LU Hui, TANG Jihong, ZHANG Qikai. Evaluation of the effectiveness of chlorfenapyr-coated maize seeds for the control of Spodoptera frugiperda[J]. Journal of Tropical Biology, 2025, 16(2): 236-242. doi: 10.15886/j.cnki.rdswxb.20240129

Evaluation of the effectiveness of chlorfenapyr-coated maize seeds for the control of Spodoptera frugiperda

doi: 10.15886/j.cnki.rdswxb.20240129
  • Received Date: 2024-08-09
  • Rev Recd Date: 2024-11-15
  • Chemical spraying is he fast and effective way to control Spodoptera frugiperda infesting maize in the field, but the chemical solutions are hard to spray evenly on the leaves, which reduces the contact of the solutions by the larvae of S. frugiperda and hence the effectiveness of the control of S. frugiperda at the seedling stage in the field. In this context maize seeds were coated with chlorfenapyr to evaluate the effect of chlorfenapyr on the seed germination rate, seed germination potential and seedling emergence rate as well as the control effect of S.frugiperda in maize at the seedling stage. The results showed that there was no significant adverse effect of chlorfenapyr-coated seed treatment on seed germination, germination potential, and seedling emergence in the pot experiment. The mortality of S. frugiperda larvae fed with maize leaves from the seed coating treatment with 1 g·L-1 chlorfenapy for 7 d was 96.67%, significantly better than that of the blank control, but not significantly different from that of the chlorantraniliprole treatment. In the field experiment, the seed coating treatment with 1 g·L-1 chlorfenapyr had a lower infestation rate of maize plants(7.67%) and higher control rate(98.33%) of S.frugiperda at 14 d, which were significantly better than those of the chlorantraniliprole treatment. All these results showed that chlorfenapyr had a good control of S. frugiperda at the seedling stage of maize through seed coating treatment, which provides a new method for the subsequent seed coating treatment to control S. frugiperda.
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Evaluation of the effectiveness of chlorfenapyr-coated maize seeds for the control of Spodoptera frugiperda

doi: 10.15886/j.cnki.rdswxb.20240129

Abstract: Chemical spraying is he fast and effective way to control Spodoptera frugiperda infesting maize in the field, but the chemical solutions are hard to spray evenly on the leaves, which reduces the contact of the solutions by the larvae of S. frugiperda and hence the effectiveness of the control of S. frugiperda at the seedling stage in the field. In this context maize seeds were coated with chlorfenapyr to evaluate the effect of chlorfenapyr on the seed germination rate, seed germination potential and seedling emergence rate as well as the control effect of S.frugiperda in maize at the seedling stage. The results showed that there was no significant adverse effect of chlorfenapyr-coated seed treatment on seed germination, germination potential, and seedling emergence in the pot experiment. The mortality of S. frugiperda larvae fed with maize leaves from the seed coating treatment with 1 g·L-1 chlorfenapy for 7 d was 96.67%, significantly better than that of the blank control, but not significantly different from that of the chlorantraniliprole treatment. In the field experiment, the seed coating treatment with 1 g·L-1 chlorfenapyr had a lower infestation rate of maize plants(7.67%) and higher control rate(98.33%) of S.frugiperda at 14 d, which were significantly better than those of the chlorantraniliprole treatment. All these results showed that chlorfenapyr had a good control of S. frugiperda at the seedling stage of maize through seed coating treatment, which provides a new method for the subsequent seed coating treatment to control S. frugiperda.

ZHONG Yuqing, JIAO Bin, LYU Baoqian, LUO Yanping, LU Hui, TANG Jihong, ZHANG Qikai. Evaluation of the effectiveness of chlorfenapyr-coated maize seeds for the control of Spodoptera frugiperda[J]. Journal of Tropical Biology, 2025, 16(2): 236-242. doi: 10.15886/j.cnki.rdswxb.20240129
Citation: ZHONG Yuqing, JIAO Bin, LYU Baoqian, LUO Yanping, LU Hui, TANG Jihong, ZHANG Qikai. Evaluation of the effectiveness of chlorfenapyr-coated maize seeds for the control of Spodoptera frugiperda[J]. Journal of Tropical Biology, 2025, 16(2): 236-242. doi: 10.15886/j.cnki.rdswxb.20240129
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