Silicon is one of the major component of the Earth’s crust. In soil, the majority of silicon occurs in a form of silica, which is subjected to limited and slow weathering releasing low amounts of monosilicic acid – the only plant available form of silicon. Monosilic acid occurs in soil in low amounts and is very unstable. Plants can uptake it in very limited amount, therefore foliar application of silicon in a proper form is very important.
OPTYSIL® is an unique, liquid immunity biostimulant with high content (200 g SiO2/L) of active silicon form, easy plant available. Unique formula duoSil™ , used in OPTYSIL® ensures easy and full availability of silicon contained in product, high stability and possibility of mixing with the majority of agrochemicals.
INTERMAG trial, 2020
increased plant tolerance to drought and low temperatures – leaves, strengthened by silicon deposits in cell walls, demonstrate reduced transpiration and therefore plants are more tolerant to periodic water shortages and low temperatures
lower plant susceptibility to pathogen penetration – strengthened cell walls are natural barrier limiting the penetration of pathogens and their spreading in plant tissues
lower plant susceptibility to mechanical damages – cell walls, strengthened by silicon, are less susceptible to damages caused by strong wind, hail and pests
better yield quality – flexible and strengthened by silicon epidermis is less susceptible to cracking caused by pests and sunburns. Fruits are more durable during harvest, transport and storage
better root system development – increased silicon content in plant tissues stimulates phosphorus uptake from soil, which results in better root system development
Results of the studies confirming the effectiveness of OPTYSIL®.
Drought, low temperatures
higher photosynthesis intensity of maize plants in low temperatures – Institute of Plant Protection - National Research Institute, Poland
higher water content in leaves of spring wheat during drought – Polish Academy of Sciences, Poland
higher water content in leaves of maize in low temperatures - Polish Academy of Sciences, Poland
Better yield quality
higher firmness of strawberry fruits during harvest – Institute of Plant Protection - National Research Institute, Poland
higher content of sugar in strawberry fruits – Research Institute of Horticulture, Poland
higher firmness of apple fruits during storage – local experimental station, Verzuolo, Italy
Pests and diseases
less fruits infected by pathogens – Research Institute of Horticulture, Poland
less oilseed rape pods infected by pathogens - Institute of Plant Protection - National Research Institute, Poland
less leaves and stems infected by pathogens – Research Institute of Horticulture, Poland
less ears of cereals infected by pathogens – Institute of Plant Protection – National Research Institute, Poland
Root system development
OPTYSIL® is recommended for use in the cultivation of all agricultural, fruit and vegetable crops in the form of foliar sprays, fertigation and irrigation
Foliar treatments - general application times (◆ optimal, ◊ optional)
◆ beginning of leaf development, ◆ plant growth / before beginning of flowering, ◆ development of parts for harvesting: 1-2 treatments every 14-21 days, ◊ in situations of expected stress
OPTYSIL ® is registered for use in organic agriculture in accordance with Regulation (EU) No. 2018/848.
The average marketable yield of selected crops obtained from 1 ha after OPTYSIL® application compared to control, i.e. not treated plants (average dose 2 x 0,5 L/ha).
Based on the trial results carried out by: Research Centre for Cultivar Testing (Poland), Research Institute of Horticulture (Poland), Institute of Plant Protection – National Research Institute (Poland); 2012–2017 years.