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Chinese Agricultural Science Bulletin ›› 2023, Vol. 39 ›› Issue (30): 138-143.doi: 10.11924/j.issn.1000-6850.casb2022-0910

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Effect of Soil Type and Water Content on the Development and Eclosion of Frankliniella Intonsa Pseudopupa

PAN Rundong1,2(), LI Peizheng1, HAN Dongyin2, FU Yueguan2, ZHAN Canlan2, LI Lei2()   

  1. 1 College of Plant Protection, Hainan University, Haikou 570228
    2 Key Laboratory for Integrated Pest Management of Tropical Crops, Ministry of Agriculture and Rural Affairs/ Environment and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101
  • Received:2022-11-02 Revised:2023-03-05 Online:2023-10-25 Published:2023-10-19

Abstract:

Based on the current knowledge that Frankliniella intonsa (Trybom) prefers pupating in soil, the effects of soil types and water contents on the pupation and eclosion of F. intonsa were examined to provide some important evidence for controlling F. intonsa pseudopupae. The clay, loam and sandy soils were collected and dried at 105℃. Then the pure water was added till the water contents of the three types of soil reached 3.00%, 5.00%, 10.00%, 15.00%, 20.00%, and 25.00%. Subsequently, the 2nd-instar nymphs were put into the three types of soil with different water contents to observe the pupation and eclosion of F. intonsa. Soil type and water content significantly affected the eclosion of F. intonsa, and their interactions were significant (P<0.05). In all tested soils, the eclosion rate of F. intonsa first increased and then decreased with the increase of soil water content. Hereinto, the eclosion rate of F. intonsa was highest in the sandy soil with 10.00% water content, which was up to 77.50%, followed by the 63.33% eclosion rate in the clay soil with 15.00% water content. However, the eclosion rate of F. intonsa was highest in the loam soil with 15.00% and 20.00% water content, which were 50.00% and 47.50%, respectively. In addition, the eclosion peak of F. intonsa occurred on the 4th day in the sandy soil with 15.00% water content, but the peak appeared on the 3rd day in the sandy soil with other water contents, and the clay and loam soil with all water contents. The pupation and eclosion of F. intonsa are restricted by the soil type and water content. Their pupation and eclosion can be interfered by controlling the soil moisture in the field.

Key words: Frankliniella intonsa (Trybom), soil types, soil water content, eclosion rate, developmental time