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Z. Berzsenyi Agricultural Research Institute of the Hungarian Academy of Sciences Martonvásár Hungary

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Investigations on the process of dry matter accumulation over time could contribute to improvements in the N fertiliser utilisation of maize hybrids. In 2001 and 2002 the effect of four N fertiliser rates (0, 80, 160, 240 kg ha −1 ) on the growth and productivity of three maize hybrids with different vegetation periods [Mv TC 272 (FAO 280), Mv 355 SC (FAO 390) and Maraton SC (FAO 450)] was studied in an almost 50-year-old long-term experiment involving continuous maize, as a stress environment. The experiment was set up in Martonvásár on chernozem soil with forest residues in a split-plot design with four replications, with the N treatments in the main plots and the maize hybrids in the subplots. Plant samples for yield analysis were taken at 14-day intervals on 8 occasions a year. The dynamics of dry matter accumulation in the whole plants and in various plant organs (stalk, leaf, grain), and that of leaf area, differed significantly between N treatments and hybrids. The effect of mineral N fertilisation was significant from the 4–6-leaf stage and the differences between hybrids from the flowering stage. Both the dry matter yield and the leaf area were greatest in the N 160 treatment. The greatest difference in the pattern of N fertiliser reactions over time was detected between the pre-flowering and post-flowering stages. The maize grain yield was greatest in the N 160 treatment, exhibiting the following values (t ha −1 ) in the individual N treatments: N 0 : 4.907, N 80 : 7.872, N 160 : 8.921, N 240 : 8.770. The results indicate that the dynamics of dry matter accumulation in the whole maize plant and in various plant organs could further our understanding of the N fertiliser responses of maize hybrids.

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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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