No 49 (2012)
Articles

Using crop analysis in the precision nutrient supply system of maize

Published November 13, 2012
Zoltán Izsáki
Szent István Egyetem Gazdasági, Agrár-, és Egészségtudományi Kar, Környezettudományi Intézet, Szarvas
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APA

Izsáki, Z. (2012). Using crop analysis in the precision nutrient supply system of maize. Acta Agraria Debreceniensis, (49), 183-186. https://doi.org/10.34101/actaagrar/49/2521

Abstract

The effect of the N, P and K supplies of soil on the grain yield and N, P and K status of maize was studied in a long-term mineral fertilisation experiment between 2001 and 2008 and nutrient supply limit values were determined to plant analysis. Based on the interaction between the N concentrtion of maize leaves measured at the beginnig of tasseling and grain yield, the satisfactory limit value of N supply to reach 10–14 t ha-1 yield was between 2.0–4.0%. Leaf analysis at the beginning of tasselling indicated that better P and K supplies were associated with a higher P and K concentration in the maize leaves. Correlation analysis on the P concentration of the maize leaves and the grain yield showed that at a grain yield level of 10–14 t ha-1 a P concentration of 0.20–0.37% represented a satisfactory P supply level. The satisfactory K supply limit value to reach 10–14
t ha-1 grain yield was 1.5–2.6%.

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