Agronomical target

  • Biostimulation
  • NUE
  • Organic farming

Van Iperen Plants for Plants® 4-Terra is part of the new generation of plant-based Biostimulants developed for a more sustainable agriculture.

4-Terra has a proven dual action on enhancing Nutrient Use Efficiency (NUE) of the crop both on soil microflora as well as on the plant itself, making it a unique solution combining soil and plant action.

4-Terra has been developed for all fertigated crops in both comfort and stress conditions. Applied in fertigation during the early stages of the crop cycle, 4-Terra will improve the crop establishment ensuring a better nutrient uptake throughout the crop cycle, resulting in higher yields and crop quality.

  • Fully controlled process from plant material to final product
  • Enhancing NUE, ensuring higher yield and crop quality
  • Improving Phosphate assimilation by combining plant and soil action
  • Suitable for organic farming in compliance with European Regulation (EU) 2018/848
  • Safe for users, consumer and for the environment
  • Developed for fertigation and soil application


  • 100% natural, dark red liquid
  • Patented production process
  • Keep as cold as possible, below 25 °C as maximum, and away from direct sunlight
  • Easy to handle and apply


Mode of action

Genomic and metabolomic methods have identified a clear mode of action for 4-Terra. 4-Terra improves Phosphate assimilation thanks to an up-regulation of PHT2;1 gene a chloroplastic Phosphate transporter. Furthermore, we measured a significant increase of microbial population allowing P solubilization in the soil (microbiome effect).

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Compatible with most water-soluble fertilizers

Fertilizing Knowledge

Mode of Action (MOA)

10 years of scientific research have made it possible to describe the specific mode of action of the Plants for Plants® products.

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