The world's and the domestic maize growing technological development depends on the applied agricultural engineering largely. The most important thing the harmonic NPK nutrition solution to the crop increase and the reduction of the crop fluctuation. During our research we examined the different nutriment elements, and their proportions in monoculture long-term experiment of maize. The experiment was set up in Hungary at Szarvas in the experimental field of the University of Szent István, Faculty of Agricultural and Economics Studies, in Galambos. We reveal the plant physiology and technological contexts in our examinations, that the bases of the modern nutrient solutions, and the scientific bases of the efficient development of the maize growing system. We examined 64 nutrient combination in the experiment, 4 nitrogens portion (0 kg ha-1, 70 kg ha-1, 140 kg ha-1 and 210 kg ha-1), 4 phosphoruses portion (0 kg ha-1, 40 kg ha-1, 80 kg ha-1 and 120 kg ha-1) and 4 potassiums portion (0 kg ha-1, 60 kg ha-1, 120 kg ha-1 and 180 kg ha-1) in different combinations. On the parcels all possible combinations get to a setting, which makes the examinations of the interaction of the nutriment elements. The setting of the experiment onto the bases of the old fertiliser experiment of Faculty on a similar manner, on similar principles, modernized to the scientific and practical claims of our days. We established that the role of the phosphorus and the potassium are smaller in the experiment, they affect the physiological processes of the maize advantageously mostly. The effect has on the average yield is smaller because it is based on the interaction of the different nutriment elements. The analysis of variance of the yields supported this, we experienced that the effect of nitrogen has the most significant difference. In our experiment the largest effect from among the examined three nutriment elements the nitrogen showed it, we experienced a smaller effect in case of the phosphorus and the potassium. From among the examined parameters significant differences only the nitrogen treatments could to justify, the effects the phosphorus and the potassium mostly trend character, the border of the significance was attained in a little proportion only. In the experiment the average yields were between 3,65 t ha-1 and 13,9 t ha-1.

maize, nutrient supply, nitrogen, phosphorus, potassium

field crops and pastures

Presentation: poster