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    Crop information

    Benefits of Kelpak on Onions

    Kelpak trials on onions in California, Hungary, Mexico, Serbia and South Africa all show positive yield increases including many other benefits:

    • Improves rooting
    • Better shoot development after establishment
    • Higher photosynthetic rate
    • Increased bulb size and more marketable bulbs
    • Better yields
    Onions

    Kelpak on onions globally

    Onion yield increase globally

    0 % - 33 %

    • +14%
      South Africa2 L/ha × 3
    • +18%
      California2 L/ha × 3
    • +13%**
      Mexico2.5 L/ha¹ × 2
    • +14%
      Hungary2 L/ha × 3
    • +33%*
      Serbiadip² + 2 L/ha × 2
    Onion yield increase globally (%)
    CategoryOnion yield increase globally
    South Africa (2 L/ha × 3)+14%
    California (2 L/ha × 3)+18%
    Mexico (2.5 L/ha¹ × 2)+13%**
    Hungary (2 L/ha × 3)+14%
    Serbia (dip² + 2 L/ha × 2)+33%*

    Recommended application rates

    Onion stage 1: seedling dip

    Seedling dip

    Dip the roots of seedlings in 1% Kelpak before transplanting.

    Onion stage 2: foliar spray

    Foliar spray

    Follow up with a 2-3 L/ha Kelpak at 3 to 4-leaf stage.

    Onion stage 3: repeat foliar spray

    Repeat foliar spray

    Repeat the foliar spray once or twice with 14 day intervals.

    Promoting Growth

    Plant Biostimulant.

    Kelpak Plant biostimulant improves root development, flowering, fruit set, fruit retention and crop resilience by using nature's own code to elicit powerful responses in crops that improve quality and yield. Available in multiple formats for farms of all sizes.

    Find out more
    Kelpak liquid seaweed extract container
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