Naslov
Genotype and soil influences on zinc status in maize

Autori
Rastija, Mirta ; Kovačević, Vlado ; Šimić, Domagoj ; Bukvić, Gordana ; Antunović, Manda

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Zinc Crops 2007 - Improving Crop Production and Human Health / - , 2007, -----

Skup
Zinc Crops 2007 - Improving Crop Production and Human Health

Mjesto i datum
Istanbul, Turska, 24.05.2007. - 26.05.2007

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
maize genotype effects ; soil effects ; zinc status

Sažetak
Ten maize hybrids were grown on two soils of moderate fertility at eastern part of Sava valley, Croatia (Zupanja calcaric fluvisol and Luzani pseudogley). The experiments were conducted in four replicates (experimental- plot was 14 m2). Maize was sown at the end of April and harvested in the first decade of October 1998. Usual soil and crop management practice for maize was applied in both experiments, including fertilization (kg ha-1: 160 N + 100 P2O5 + 150 K2O and 150 N + 130 P2O5 + 130 K2O, for fluvisol and pseudogley, respectively). The leaves samples (the ear-leaf at silking stage) were taken for chemical analysis. Elemental composition including Zn in these samples was determined by (ICP-AES) technique after their microwave digestion using conc. HNO3+H2O2. Oversupplies of Mg and Ca and low content of available Zn are main characteristics of the Zupanja calcaric fluvisol, while the Luzani pseudogley is adequate in zinc and moderately supplied with phosphorus. Low and similar grain yields of maize were found in both trials (means 6.31 and 6.07 t ha-1, for the fluvisol and pseudogley, respectively. Yield variations among maize hybrids were from 4.09 to 9.15 t ha-1. Differences of Zn status in maize under two soils conditions were considerably lower in comparison with differences of mobile Zn status in these soils. Considerable influences of genotype on Zn status in maize leaves were found because variation of Zn contents among the hybrids was from 25. 6 to 41.7 mg Zn kg-1. Acute K deficiency (mean 0.64 % K) and oversupply of Mg (mean 1.23% Mg) were found in maize under calcaric fluvisol conditions.

Izvorni jezik
Engleski

Znanstvena područja
Poljoprivreda (agronomija)

POVEZANOST RADA