Regular Organic Fertilizers

Simonis Fertilizers B.V. develops, produces and exports high quality organic fertilizers, particularly animal manure.

Simonis Fertilizers B.V. exports, produces and develops high quality organic fertilizers, particularly animal manure, in the following Quantity: PELLETS with 4 – 5 MM average diameter.
The dried product is pressed into a tenable manageable pellet, suitable as fertilizer. The result is an environmentally-friendly fertilizer, called: AGROGOLD®.


 Organic matter  65 %
 Dry matter min.  90 %
 Moisture max.  10 %
 Nitrogen (N)  4 %
 Phosphorus (P205)  3 %
 Potassium (K20)  2 %

is an organic fertilizer, produced from 100% chicken manure. It contains a high content of organic matter, which is essential for the maintenance of soil fertility. The organic matter also stabilizes and improves the moisture retaining capacity of the soil.

Please contact us for more information on our AGROGOLD®  fertilizer, and our AGROGOLD®  leaflet.

Technical data

Use of organic fertilizer

OMRI-Listed Fertilizer

Special products

Certified Organic Fertilizer

AGROGOLD® organic fertilizer is analysed regularly by the official STER Laboratory in the Netherlands, which provides the following

Average Composition

Organic matter 65 %
Dry matter min. 90 %
Moisture max. 10 %

Nitrogen (N) 4 %
Phosphorus (P205) 3 %
Potassium (K20) 2 %

Magnesium (MgO) 1 %
Sulphur (S) 1 %
Calcium (CaO) 9 %

Sodium (Na2O) 0.7 %
Chlorine (Cl) 0.2 %

Trace elements

Iron (Fe) 700 mg/Kg.
Manganese (Mn) 350 mg/Kg.
Boron (B) 38 mg/Kg.
Molybdenum (Mo) 4 mg/Kg.
Cobalt (Co) 2 mg/Kg.

Heavy metals

Arsenic (As) <3 mg/Kg.
Cadmiun (Cd) < 0.3 mg/Kg.
Chromium (Cr) <10 mg/Kg.
Copper (Cu) 60 mg/Kg.
Quicksilver (Hg) <0.05 mg/Kg.
Nickel (Ni) 5 mg/Kg.
Lead (Pb) 5 mg/Kg.
Zinc (Zn) 320 mg/Kg.

C/N ratio

The average ratio between Carbon and Nitrogen in AGROGOLD® organic fertilizer is approx. 9.

The average pH of AGROGOLD®” organic fertilizer is approx. 7.

AGROGOLD® organic fertilizer works neutral in the soil. The acid binding capacity is + 2.

Low chlorine
AGROGOLD® organic fertilizer is low in Chlorine. The level of Chlorine is less than 0,5%.

AGROGOLD® organic fertilizer contains 10 non-pathogenic bacteria, per gram product.

AGROGOLD® organic fertilizer is free of animal- and vegetal pathogens, because of the specific production process.
A Veterinary Certificate can be made available, upon request.

The unique production process guarantees AGROGOLD® as a weed-free product.

Fertilizer recommendation

To fertilize in an economic and environmentally friendly way, it is desirable to properly analyse the soil and then match it with the appropriate fertilizing program, to the needs of the crop. The period of fertilizing, the quantity and method of fertilizing is also important.

AGROGOLD® is a product with two functions: at first it supplies the needs of nutrient requirements and secondly it improves the soil structure. On the basis of soil analysis, crop needs and experience, it is possible to apply an amount of AGROGOLD® suitable for your conditions. Organic fertilizer is a slow-release fertilizer. This means, that the nutrients will be available/released over a period of time.

Research has shown that the release of nitrogen in the first year is 60%, phosphate 80% and potassium and magnesium is 100%. The rest of the percentages is availabe during the next year.

If you use AGROGOLD® only as a soil improving fertilizer, you have to be aware not to use too much.

Recommended Quantities per 100 M2:

Vegetables – open field 10 – 30 Kg.
Vegetables – glass houses 20 – 30 Kg.
Fruit trees 15 – 30 Kg.
Soft fruit 15 – 25 Kg.
Strawberries 10 – 15 Kg.
Citrus 15 – 30 Kg.
Winery 10 – 20 Kg.
Flowers 15 – 25 Kg.
Tree nurseries 10 – 20 Kg.
Potatoes 20 – 30 Kg.
Lawns and sports turf 10 – 15 Kg.


AGROGOLD® organic fertilizer can be spread with existing machinery. A spreading test with mineral fertilizer machinery gave the following results:
Variation coefficient: 12-15 %
Work width: +/- 14 Meter.
Driving speed: 7 Km/Hour.
Quantity: 700 Kg.

The density of AGROGOLD® is approx. 700 Kg/m3 ( = 0,7/Lt.).

Pellet length
The average pellet length of AGROGOLD® organic fertilizer is 5 to 10 Mm.
The average pellet diameter of AGROGOLD® is 4 to 5 Mm.

AGROGOLD® organic fertilizer dissolves in about 3-5 minutes. In practice AGROGOLD® organic fertilizer will dissolve after one shower of rain. The time taken for a pellet structure to break down, is depending on the amount of rainfall.

AGROGOLD® – Our OMRI-listed fertilizer

OMRI stands for Organic Materials Review Institute. It is a non-profit organization which supports organic integrity by developing clear information and guidance about materials. Its goal is to make sure to support the growth and trust of the global organic community through expert, independent and transparent verification of input materials, and through education and technical assistance.

Our AGROGOLD® organic fertilizer is produced and distributed by us, and has been subjected to OMRI oversight, which indicates that it is reviewed against the organic standards. This determines whether or not a product qualifies as organic under the E+USDA’s National Organic Program (NOP). This gives you the assurance that it only consists of the finest organic materials.

OMRI Listed fertilizers are well-known, among others, for the fact that they improve the soil. This makes it not only a verified product suited for organic farms and gardens, but also a good investment for the years to come.

Click here for more information on the ‘OMRI’ certification

We have the possibility to mix any composition you want, based on organic- and/or inorganic (mineral) products. These special products, we produce only by request of a minimum quantity of 100 Mt.

We will be pleased to give you further infomation and at your request, calculate the required composition.

AGROGOLD® / WOPROFERT® are regisered as trademark.

Furthermore, we have certified several other organic fertilizers to the Control Union Certifications Standard (based on EEC 834/2007 and 889/2008), which means that they are suitable and allowed in biological farming.

For more information in regards to our certified organic fertilizers please click here.

AGROGOLD® organic fertilizer can be supplied in strong polyethylene bags of 10 Kg., 15 Kg., 25 Kg. or 50 Kg., in Big Bags of various net weights and in bulk.

We also have another registered brand, which is our WOPROFERT® fertilizer. Both brands are quite similar and are organic fertilizers of a very good quality, suitable for farms, gardens and other purposes. Our AGROGOLD® brand is OMRI-listed, and therefore a verified product suited for organic farms and gardens.