Field trials - Humic acids Range
Control vs. Humifirst (right)

Humifirst®: Maximum efficiency for leek – Private trial, France -




The following trial, established in France, assessed the performance of Humifirst® on the yield of leek crops. Tradecorp has been the first company to have been granted the official authorization for sale of this kind of product in the French market and in other countries such as Belgium, Poland and Switzerland.

The results, as can be seen in figure 1, show a 21% increase in the yield during the first assessment, carried out on 27th April, and of 12% during the second measurement (21st May).

The excellent results obtained throughout the first weeks indicate that the use of Humifirst is an interesting solution during adverse climatic conditions (cold, low luminosity) and in the early crops in the months of February and May.


Trial conditions
• Date: 2004.
• Crop: Leek.
• Planting date: 12th March.
• Parameters assessed: Yield (vegetative mass). First assessment: 27th April. Second assessment: 21st May.



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