The research group of the University of Debrecen has set up an experimental agrometeorological weather station on the outskirts of Tiszavasvár, next to two sweet maize fields of Lipták Farm with different soil types (chernozem, sandy loam) in June 2020. The weather station's measurement program included air temperature, humidity and precipitation.

It was found that the measurement program is able to provide complete information for the implementation of precision sweet maize production and production technology during the growing season. In addition it is possible to determine the optimal sowing date. Furthermore, heat sum calculation can be used to monitor the development dynamics of maize, forecast silking, identify critical events during the grain filling period based on precipitation and evaporation data, and plan possible interventions and determine the optimal harvest time during ripening.

At Lipták Farm, the conditions for sweet maize production experiments were provided at a high professional level. The excellent cultivation technology enabled reliable research and analysis involving two field fields with different soil conditions. Tests were performed in both cases with the same hybrid (Dessert R78).

Compared to the favourable yield of Pellei Table 1 (21.983 t ha-1), Dobi Table 3 produced 1.476 tons more per hectare (23.459 t ha-1). Based on our examinations, due to the different sowing dates, the effective heat amount in Dobi Table 3 was 24% more favorable (47 °C day) in the 10-day time interval after sowing, compared to the value measured in Pellei Table 1.

Soil conditions were also significantly more favorable in Dobi Table 3, with a humus content 1.5% higher (2.9%). The supply of phosphorus and potassium is also favourable compared to Pellei Table 1. Most of the meso- and microelements showed the same value, except for the Zn supply. The weaker soil quality was largely compensated by the favourable amount of heat available in Table 1 of Pellei during the growing season (980 °C day). Precipitation was almost the same during the 96–97-day long growing season (283–285 mm). In Pellei Table 1, dry matter incorporation and yield formation were greatly aided by irrigation (30 mm).

Keywords: sweet maize, agrometeorology, field production results