Rombi Cal

Calcium complexed fertilizer

Rombi® Cal is a highly concentrated calcium corrector which, thanks to its formulation, is highly soluble and assimilable by the plant.

Rombi® Cal helps the development of the cell wall and strengthens its structure. Furthermore, as it is nitrogen and chlorine free, it is the ideal alternative for foliar applications at any time of the crop cycle and can significantly increase calcium intake at critical times (flowering, fruit set, fattening) without incurring in N inputs, thus avoiding problems such as excess vegetative development, flower and fruit drop or delayed ripening.

Declared content

Calcium oxide (CaO): 30.0 % w/w

Calcium oxide (CaO) complexed with acetic acid 28,5 % w/w
Calcium oxide (CaO) chelated by EDTA
1,5 % w/w

pH stability range of the fraction chelated: 1-9

Physiochemical characteristics

Aspect: Soluble powder

Colour: White

pH (Direct): 13,5

Form of application and dosage

Rombi® Cal is developed for both foliar and root application and can be applied to all types of crops, we recommend applying in case of deficiency and at times of greatest need such as fruit development:


Dosage (ha/application): 1-2 kg/ha

No. applications cycle: 1-3

Maximum recommended concentration: 0,3%

Root application

Dosage (ha/application): 2-4 kg/ha

No. applications cycle: 1-3

Maximum recommended concentration: 0,5%

Indications for use

Rombi® Cal is a very soluble product that is easy to prepare. No prior dilution is necessary. In case of mixing, it is recommended to follow the right order to avoid physical interferences. It is recommended to always treat when weather conditions are favourable for the application. Do not apply together with sulphur or phosphorus.

The recommendations and information we provide are the result of extensive and rigorous studies and tests. However, numerous factors beyond our control (preparation of mixtures, application, climatology, etc.) may intervene in the use of the product. PLYMAG, S.L. guarantees the composition, formulation and content. The user will be responsible for any damage caused (lack of efficacy, general toxicity, residues, etc.) by total or partial non-observance of the instructions on the label.

Which crops does it help?


Do you need more info?

With the aim of offering the farmer different alternatives to increase the yield of his crops, PLYMAG has a wide range of products, among which the certified products for organic farming stand out.

Legal Notice

Follow us on Social Media

® PLYMAG 2023