Folyóiratcikk
Complex long-term tillage experiment
Published:
2023-09-30
https://doi.org/10.12666/tfgtdb11
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Copyright (c) 2023 János Nagy, Béla Gombos, László Hadászi, Tamás Rátonyi
This work is licensed under a Creative Commons Attribution 4.0 International License.
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Nagy, J., Gombos, B., Hadászi, L., & Rátonyi, T. (2023). Complex long-term tillage experiment. Növénytermelés, 72(3), 31-39. https://doi.org/10.12666/tfgtdb11
Abstract
The complex long-term tillage experiment (crop rotation × tillage × fertilisation × irrigation × plant density × genotype) was established in Debrecen in 1989 by Professor János Nagy on the proposal of Academician Béla Győrffy, and is unique in Europe.
The results of our research show that the effects of production factors (irrigation, tillage, plant density, fertilisation) are not independent of each other. We have shown that the interaction between irrigation × fertiliser and plant density × fertiliser is positive, and therefore all three factors should be changed simultaneously when choosing or changing the production level. The values for the main average of the experiment represent a medium (mid-tech) production level when the variance components are decomposed. When aiming for a lower (low-input) production level, it should be taken into account that a reduction in one of the production factors will also diminish the effect of the other two factors. Relatively higher inputs of the two factors will not be efficient. Our research has shown that whatever level of production is desired, the most favourable interaction between water, nutrient supply and plant number must be ensured at the same time.
The results of our research show that the effects of production factors (irrigation, tillage, plant density, fertilisation) are not independent of each other. We have shown that the interaction between irrigation × fertiliser and plant density × fertiliser is positive, and therefore all three factors should be changed simultaneously when choosing or changing the production level. The values for the main average of the experiment represent a medium (mid-tech) production level when the variance components are decomposed. When aiming for a lower (low-input) production level, it should be taken into account that a reduction in one of the production factors will also diminish the effect of the other two factors. Relatively higher inputs of the two factors will not be efficient. Our research has shown that whatever level of production is desired, the most favourable interaction between water, nutrient supply and plant number must be ensured at the same time.
