RETETNIS® in Agriculture

RETENTIS® increases water efficiency in your fields by up to 40% , thereby reducing irrigation costs and pumping energy. The RETENTIS granules store rainwater and irrigation water while simultaneously binding dissolved fertilizers directly in the root zone. Water and nutrients are thus available exactly when the plants need them, instead of being washed out. The result: more consistent moisture supply, higher yield stability, and less stress for crops – an economical and sustainable contribution to modern arable farming systems.

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Typical applications & dosages

Soil/substrate mixtures:
 10 – 20 g / liter of soil or substrate; Mix evenly with soil or substrate

New plantings of specialty crops , e.g., viticulture and fruit growing:
100 g / plant

Under glass/polytunnel vegetable cultivation:
250–500 g / m²; in the top 10 cm

Outdoor vegetable cultivation:
250 g / m²; 5–10 cm incorporated

Crops (e.g. cereals, rapeseed):
20–30 kg / ha; apply directly into the seed furrow during sowing

Root Protection Gel: Mix 0,5 - 0,7 kg with 10 liters of water. Wait 10-15 minutes until the granules have absorbed the liquid, stirring several times. Then immerse the roots for a few seconds.

Tip: Do not add RETENTIS® pure to the planting hole, but mix it with soil/substrate and mix well - this way the granules/gel are optimally distributed around the roots.

Pro tip: Cover the treated substrate or area with about 2-3 cm of untreated soil or substrate - this way RETENTIS® remains under the surface and well protected.

Extra tip: Incorporate fertilizer at the same time! Mix your tried and tested fertilizer directly into the soil together with RETENTIS®. It binds the nutrients and releases them continuously over weeks to the plant roots - no washing out, no nutrient shock.

🧮 Calculate the exact requirement for your project right below with the RETENTIS®Calc Tools.

Hand hält eine Portion RETENTIS®-Wasserspeichergel von Agrobiogel vor frisch gepflanzten Setzlingen im Boden, mit einem Fragezeichen als Hinweis auf die Berechnung der benötigten Menge (RETENTIS® Calc).

RETENTIS®-Calc

The RETENTIS®Calc tools provide you with the perfect dosage, water-saving effect and the right packaging size in seconds – simply enter the area or number of plants for the application area in RETENTIS®Calc or select a round or square container for the plant container in RETENTIS®Calc and get started.

To the calculation tools →
Illustration showing how to use RETENTIS® water storage gel: 1. Mix gel with soil or substrate, 2. Plant, 3. Water.

Easy to use

Work RETENTIS® evenly into the dry soil. As a rule of thumb, use 20 g of granules per 1 liter of potting soil.

Three steps:
1 Mix · 2 Plant · 3 Water

Extra tip:
Work in fertilizer at the same time:
 Mix your proven fertilizer directly into the soil with RETENTIS®. It binds the nutrients and releases them continuously to the plant roots over weeks – no leaching, no nutrient shock.

Before After

Why RETENTIS®

💧 Stores up to 10 liters of water per kilogram of granules and releases it back to the plants in dry conditions.
💦 Saves up to 40% irrigation water
⏳ Works in the soil for 3 – 5 years , completely without microplastics.
🍂 Promotes humus formation and soil structure.
⚖️ pH-neutral - RETENTIS® does not change the pH of the soil and can be mixed with other additives.
✅ is approved for organic farming .

Image: Basil after 3 weeks without watering, left with 2% RETENTIS®, right just soil. Move the slider and see the difference!

More about the RETENTIS® effect →

Further areas of application

Discover further applications of RETENTIS® and find the perfect solution for your project.

Find more application areas →