Evaluation of Chrysoperla carnea and Macrolophus pygmaeus as biological control agents of Frankliniella occidentalis on Batavia lettuce under hydroponic cultivation | ||
| Journal of Crop Protection | ||
| Article 8, Volume 11, Issue 2, 2022, Pages 269-278 PDF (644.12 K) | ||
| Document Type: Original Research | ||
| DOI: 10.48311/jcp.2022.1594 | ||
| Authors | ||
| Ahmed H. El Kenway* 1; Wael E. A. El-Sheikh2; Mohamed Ali Mohamed1 | ||
| 1Biological Control Department, Plant Protection Research Institute, Agricultural Research Centre, Giza, Egypt. | ||
| 2Department of Plant Protection, Faculty of Agriculture, Beni-Suef University, Beni Suef 62511, Egypt. | ||
| Abstract | ||
| Few studies have investigated the efficacy of natural enemies against pests in hydroponic farming. We aimed to determine the effectiveness of two predators Chrysoperla carnea (Stephens) (Neuroptera: Chrysopidae), and Macrolophus pygmaeus Rambur (Hemiptera: Miridae), for controlling Frankliniella occidentalis (Pergande) (Thysanoptera: Thripidae) in hydroponic cultures of Batavia lettuce. Both C. carnea and M. pygmaeus were released weekly with spot treatment: 10-20 individuals /m2 and 0.25-5 individuals/ m2/release, respectively. One of the more substantial conclusions from our current study is that C. carnea and M. pygmaeus highly reduced the F. occidentalis larvae and adults (45.85 and 60.91%) over the control treatments. The efficiency of M. pygmaeus was higher than that of C. carnea. The population of F. occidentalis decreased from 8.75, 7.75, and 7.5 individuals /leaf in control to 8.25, 7.0, 6.25, and 3.5, 3, and 2.5 individuals/leaf in the C. carnea and M. pygmaeus, respectively in all three planting cycles. Results also showed that in control and M. pygmaeus, the variation was only significant between cycles 1 and 3. While the C. carnea group showed a significant difference between cycles 1 and 3 and 1 and 2. Results also indicated that M. pygmaeus was more effective than C. carnea as a biocontrol agent against the larvae and mature F. occidentalis. Thus, using M. pygmaeus and C. carnea to manage the thrips damage is advised. | ||
| Keywords | ||
| soilless culture; Vegetable; Organic; natural enemies; insect pest management; hydroponic | ||
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