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Comparative effect of different insecticides on the growth and yield of soybeans

Author

Listed:
  • Sanjeev Kumar Dhungana

    (School of Applied Biosciences, Kyungpook National University, Daegu, Korea
    National Institute of Crop Science, Rural Development Administration, Miryang, Korea)

  • Bishnu Adhikari

    (School of Applied Biosciences, Kyungpook National University, Daegu, Korea)

  • Arjun Adhikari

    (School of Applied Biosciences, Kyungpook National University, Daegu, Korea)

  • Il-Doo Kim

    (International Institute of Research & Development, Kyungpook National University, Daegu, Korea)

  • Jeong-Ho Kim

    (Department of Green Technology Convergence, Konkuk University, Chungju-si, Chungcheongbuk-do, Korea)

  • Dong-Hyun Shin

    (School of Applied Biosciences, Kyungpook National University, Daegu, Korea)

Abstract

The yield of soybeans, an economically important crop worldwide, is substantially reduced by different abiotic and biotic factors, including insect pests. Different insecticides are applied to control soybean insect pests. The application of insecticides may also affect the plants along with the pests. The effects of four insecticides (fenitrothion, etofenprox, thiamethoxam, and lambda-cyhalothrin-cum-thiamethoxam; LT) on the growth and yield of two soybean cultivars over two years were investigated. The plant height (PH), pod number, shoot dry matter without seed (SDWS), total shoot dry matter, seed yield per plant (SYP), harvest index (HI), and hundred-seed weight significantly varied with the insecticides. However, the primary branch number was not significantly affected by the insecticides. Significant interactions between the year and insecticide, except for the SDWS and HI, indicated that the growing environment also affected the influence of the insecticides. The PH was significantly tall in the thiamethoxam (50.07 cm) and short for the LT (46.66 cm) application. The SYP was significantly high for the LT (20.51 g) and low for the fenitrothion (11.51 g). This study showed that the type of insecticide could significantly affect the plant growth and yield of the soybean.

Suggested Citation

  • Sanjeev Kumar Dhungana & Bishnu Adhikari & Arjun Adhikari & Il-Doo Kim & Jeong-Ho Kim & Dong-Hyun Shin, 2020. "Comparative effect of different insecticides on the growth and yield of soybeans," Plant Protection Science, Czech Academy of Agricultural Sciences, vol. 56(3), pages 206-213.
    • Handle: RePEc:caa:jnlpps:v:56:y:2020:i:3:id:77-2019-pps
    DOI: 10.17221/77/2019-PPS
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