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Chilean Journal of Agricultural Research
Instituto de Investigaciones Agropecuarias, INIA
ISSN: 0718-5820
EISSN: 0718-5839
Vol. 72, No. 1, 2012, pp. 117-124
Bioline Code: cj12019
Full paper language: English
Document type: Research Article
Document available free of charge

Chilean Journal of Agricultural Research, Vol. 72, No. 1, 2012, pp. 117-124

 en ZINC FERTILIZATION EFFECTS ON SEED CADMIUM ACCUMULATION IN OILSEED AND GRAIN CROPS GROWN ON NORTH DAKOTA SOILS
Rojas-Cifuentes, Gonzalo A.; Johnson, Burton L.; Berti, Marisol T. & Norvell, Wendell A.

Abstract

The Cd concentration in the seed of crops depends on various soil factors including parent material, texture, pH, soil redox, and salinity. Cadmium accumulation also varies among crop species and cultivars within a species. Cadmium and Zn may have either an antagonistic or a synergistic effect on plant uptake that can be influenced by the soil Cd and Zn concentrations. The objective was to determine the effect of Zn fertilizer additions on the seed Cd of nine crops commonly grown in North Dakota, USA. Studies were conducted at five North Dakota locations representing different soil series during 1994 and 1995. In Experiment 1, nine crops common in North Dakota were grown with and without the addition of 25 kg ha-1 Zn fertilizer. Among crops evaluated, the greatest seed Cd accumulation occurred in flax ( Linum usitatissimum check for this species in other resources L.) followed by sunflower ( Helianthus annuus check for this species in other resources L.), soybean ( Glycine max check for this species in other resources [L.] Merr.), and durum wheat ( Triticum turgidum check for this species in other resources L. var. durum). In Experiment 2, two durum wheats and one flax cultivar were grown under three Zn treatments of 0, 5, and 25 kg ha-1. In Experiment again flax had the higher seed Cd level compared with the two durum varieties. Based on the results from both studies, addition of Zn fertilizer did not consistently reduce seed Cd content, and even when statistically significant, the level of reduction was small and not likely to impact marketability of Cd accumulating crops such as flax, sunflower, soybean, and durum.

Keywords
Soil series, seed, uptake, nutrients, contamination, Linum usitatissimum, Triticum turgidum

 
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