Biostimulants can enhance crop production through stimulating the crop's natural plant processes. The application of biostimulants in the horticultural sector has been substantial, however their application to hydroponically-grown crops (particularly lettuce) is still extremely limited.
With this in mind, a team of researchers from the Chinese Academy of Agricultural Sciences, China recently conducted a greenhouse trial in which they set out to determine the efficacy of certain biostimulants when applied to hydroponically-grown lettuce.
The researchers utilised two lettuce cultivars (butterhead and red oak-leaf) and applied:
• A half-strength modified Hoagland solution (Hs-H)
• A full-strength Hoagland solution (Fs-H)
• A modified Hoagland solution supplemented with 50mg L-1 fulvic acid
• A modified Hoagland solution supplemented with 334mg L-1 seaweed extract
• A modified Hoagland solution supplemented with 5 mL L-1 gamma polyglutamic acid
Read more about this new study here.