Acta Agronomica Hungarica
Volume/Issue:
Volume 58: Issue Issue Supplement 1
Evaluation of the level of N supply in maize hybrids at different nutritional levels
Author:
A. Ványiné Széles University of Debrecen Centre of Agricultural Sciences and Engineering Debrecen Hungary

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Pages:
89–94
Online Publication Date:
15 Sep 2010
Publication Date:
01 Sep 2010
Article Category:
Research Article
DOI:
https://doi.org/10.1556/AAgr.58.2010.Suppl.1.13
Keywords:
maize; SPAD values; fertilisation; growing season
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The aim of the research was to determine the effect of fertilisation and year on the SPAD value and on the dynamics of the SPAD value during the growing season.The results proved that the SPAD value steadily decreased over the growing season in a dry year, whereas it increased in a year with favourable precipitation. Fertilisation increased the SPAD values significantly (P<0.001). The significantly highest SPAD value, in both dry years and those with average rainfall, was achieved by applying 60 kg N ha −1 fertiliser active ingredient at the 6-leaf stage, and 120 kg N ha −1 at both the 12-leaf stage and the 50% silking stage.The correlation between fertilisation and SPAD values was greatly affected by the year, being closest in 2004 when there was an average precipitation supply, and weakest in 2007, the driest year. The correlation between the factors was weak at the 6-leaf stage, but became stronger as the vegetation period proceeded.As the growing season progressed, the SPAD values decreased in the dry year, but increased in the year with average precipitation supplies. Nutrient uptake was relatively intensive until the 12-leaf stage in the average year. In the dry year, the decrease in the SPAD value was the most intensive at the 50% silking stage.There was no stochastic correlation between the SPAD value measured at the 6-leaf stage and the yield, but the correlation between the two variables became stronger during the vegetation period.

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Cover Acta Agronomica Hungarica
Acta Agronomica Hungarica
Print ISSN:
0238-0161
Online ISSN:
1588-2527

Acta Agronomica Hungarica
Language English
Russian
German
French
Size  
Year of
Foundation		 1950
Publication
Programme		 ceased
Volumes
per Year		  
Issues
per Year		  
Founder Magyar Tudományos Akadémia   
Founder's
Address		 H-1051 Budapest, Hungary, Széchenyi István tér 9.
Publisher Akadémiai Kiadó
Publisher's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Responsible
Publisher		 Chief Executive Officer, Akadémiai Kiadó
ISSN 0238-0161 (Print)
ISSN 1588-2527 (Online)

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