Mikael Gilbertsson operates about 800 ha of organic agriculture in parallel with a number of other activities. The principle of keeping the organic crops clean and free of the great pressure from weeds and lice is achieved by boosting crop growth, so they are better equipped to resist pests and diseases. They are thus “shaded” against weeds and the plants are given a high content of sugar. The basic idea is that the speed of photosynthesis in the plants is increased by spraying them with active substances produced in-house. Combined with a good application of poultry fertiliser, the level of undesirable pests is kept to a minimum.

The crops are sprayed 2-3 times during the growing season with about 20 l of active substance and 180 l of water per ha. The fields is lightly harrowed a few weeks after seeding, which is a widely known technique that has been used for many years to destroy weeds and maintain the crops. Samples of plant sap are taken from time to time to measure the sugar content. Experience has shown that after spraying with active substances from the “compost tea”, sugar content increases by up to 50% within several days of spraying, and Mikael is thus equipping the plants to resist attack and force pests into the “background”.

“We know HARDI very well and have confidence in how they follow up on service and spare parts.”

HARDI NEWSLETTER: What drives you to work with a combined operation of both conventional and organic farming?
Mikael: “It’s exciting to find new methods, and it provides the business with an economic surplus. We probably can’t manage more than the about 800-900 ha organic operation. We achieve a higher price on the sale of crops and also sell some of the harvest as organic seed.”

HARDI NEWSLETTER: Do you produce your own formulations, and can you reveal the process of how they are produced?
Mikael: "We produce two different formulations in-house, both based on compost, and brew a kind of “compost tea” in large containers with a heating supply. The processing time is about 24 hours, and the recipe belongs to a consultant who has links to the farm.”

HARDI NEWSLETTER: Are the conditions different for treating and spraying the organic products?
Carl-Magnus – the farm’s sprayer pilot: “I run both the COMMANDER TWIN sprayer from time to time on conventional agriculture, and a lot with the NAVIGATOR on the organic farm, so that gives us lots of experience. We have to keep the organic products highly agitated in the tank, as there is a high content of lime and other substances that can easily settle and tend to clog the filters if you aren’t careful. But apart from that, there’s not much difference.”

800 ha of organic operations Crops 2018: Malting barley, oats for sowing and feed, wheat, peas for sowing, fescue for sowing, timothy for sowing, rape 500 ha of conventional operations

Crops 2018: wheat, oats, winter rape, barley, rye, willow/salix


  • 2 combines
  • 8 tractors
  • 1 COMMANDER 4500 TWIN 24 metre sprayer (conventional operation)
  • 1 NAVIGATOR 4000 DELTA FORCE 24 metre sprayer (organic operation)
  • 15 other machines for seeding, dry fertiliser spreaders, ploughs, etc.

HARDI NEWSLETTER: What’s the reasoning behind your choice to use a HARDI sprayer?
Mikael: “We get good service from the Lantmännen cooperative, and the sprayer has a very high utility value. We know HARDI very well and have confidence in how they follow up on service and spare parts.”

HARDI NEWSLETTER: Where will Swedish agricultural be in 5 years?
Mikael: “That’s a very difficult question. We try to keep up with trends and the latest news amongst consumers. The agricultural policy which is applied is really crucial in determining the kind of opportunities that farms will have to try something new. One issue is the farms that are established. The second issue is that politicians and banks must provide the opportunity for young people in the next generation to come along and help renew the way we run agriculture.”