Maize grain yield formation in dependence on applied zinc doses and its content in soil
1998
Fecenko, J. | Lozek, O. (Slovenska Polnohospodarska Univ., Nitra (Slovak Republic))
Under conditions of three-year field experiments action of different zinc doses (1.5; 3 and 6 kg.ha-1) on yield formation, crude protein content and resorption of macronutrients and zinc by maize grain was investigated. The highest maize grain increments, statistically highly significant, were found at a zinc dose of 1.5 kg.ha-1. The yield increased on average by 1.01 t.ha-1 during three years, i.e. by 10.9 %, what is a highly significant result. Crude protein content in grain on average for three years increased by 0.9 % in fertilization variant 3 or by 1.1 % in variant 4, respectively. The highest zinc dose (6 kg.ha-1) resulted in depression of yields in all experimental years. 1.5 to 3 kg.ha-1 is considered as optimum zinc dose for grain maize in conditions of the Zahorska Lowlands in dependence on its content in soil.
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