Nagyhörcsök long-term experimental site belongs to The National Long-Term Fertilization Trial Network that was set up in 1968. The effects of fertilizer treatments are studied from different aspects (impact on yield quality, nutrient content of plants, nitrogen regime of soil etc.). Over the past decades agro-chemistry of every major crop was addressed and explored the nutritional status and growth, yield components, mineral composition, weed, disease resistance to learn about optimal conditions of the different plants in the soil and to guide professional agricultural advice.

Beside experiments on sustainable fertilization in croplands, IPM methods were applied in several experiments. The field experimental site is situated on the outskirts of Budapest, and has 44 ha area. On this territory, mainly field crops are cultivated (maize, alfalfa, rape, etc.), but there is also a circa 1 ha mixed orchard which is left untreated to let insect pests to propagate. Some parts are covered by forest. We are measuring the insect activity at the long-term sites.