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Does ginger extract work as an alternative to thrips control in hydroponic lettuce?

Ginger has a large number of essential oils; zingiberene is the major substance found in it, which may be linked to the insecticidal activity of plants. The objective of this work was to evaluate the use of a ginger-based extract in hydroponic lettuce as an alternative to thrips control.

The experiment was carried out in a randomized block design, with five treatments and four replications. The treatments used were  concentrations of 0 %, 20 %, 40 %, 60 %, and 80 % weight/volume of aqueous extract. After 45 days of sowing, the ginger plant extract was applied to the lettuce plants every seven days. A population of thrips was monitored using adhesive traps attached above each experimental plot once a week until harvest. In addition, fresh mass weight, shoot height, and incidence of direct damage to the crop were evaluated.

Regarding thrips monitoring, no differences were observed indicating the uniformity of the population level among the lettuce parcels. For the evaluation of weight and fresh mass, no differences were observed regarding the treatments. However, concentrations of 60% and higher showed the lowest averages of plants with direct damage, showing that the higher the concentration of the solution. the fewer insects feeding. Accordingly, the use of ginger plant extract in hydroponic lettuce becomes a promising alternative for reducing thrips feeding on lettuce.

Read the complete research at

Silva, Synara & GouvĂȘia, Marcelo & Silva, Sylmara & Gonçalves, Luciano & Pereira, Rafael. (2021). Ginger extract as an alternative to thrips (Thrips tabaci) control in hydroponic lettuce. Revista Agrogeoambiental. 13. 10.18406/2316-1817v13n220211589. 

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