EFFECT OF NITROGEN SOURCE AND CALCITIC LIME ON SOIL pH AND POTATO YIELD, LEAF CHEMICAL COMPOSITION, AND TUBER CADMIUM CONCENTRATIONS

Maier, N. A.; McLaughlin, Mike J.; Heap, M.; Butt, M.; Smart, M. K.

doi:10.1081/pln-120003380

Cited by 57 publications

(33 citation statements)

References 29 publications

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“…In a previous study we found that inhibition of the seedling growth by Cd toxicity could be attributed to a reduced carbon fixation (Hassan et al 2005b). Cd toxicity will also inhibit N metabolism, and the inhibition was N form dependent (Willaert and Verloo 1992;Maier et al 2002). In the current experiment, we found that Cd concentrations in rice plant tissues varied with N form, (NH 4 ) 2 SO 4 -treated plants being the lowest and Ca(NO 3 ) 2 -fed plants being highest, respectively.…”

Section: Discussionmentioning

confidence: 96%

“…The NH 4 + -fed lettuce plants showed more Cd accumulation than NO 3 --fed ones (Florjin et al 1992). In potato tubers, Cd concentration was significantly higher in Ca(NO 3 ) 2 -fed plants compared to (NH 4 ) 2 SO 4 -fed ones (Maier et al 2002). In spinach plants, application of (NH 4 ) 2 SO 4 enhanced Cd uptake (Willaert and Verloo 1992), but in rape seed (NH 4 ) 2 SO 4 resulted in lower Cd uptake than NH 4 NO 3 (Eriksson 1990).…”

Section: Introductionmentioning

confidence: 92%

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The growth and some physiological responses of rice to Cd toxicity as affected by nitrogen form

et al. 2007

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A hydroponic experiment was conducted to examine the effect of Cd stress on anti-oxidative enzyme activities at heading stage, yield components, root exudation and Cd and N uptake of rice plants grew in different N source i.e. (NH 4 ) 2 SO 4 , NH 4 NO 3 and Ca(NO 3 ) 2 . The results show that the effect of Cd stress on all measured parameters were N source dependent. Cd stress (1 lM) caused a remarkable reduction in grain yield and shoot biomass, an increase in root exudation, glutathione content, Cd concentration and catalase (CAT) and peroxidase (POD) activities of rice plants. In the plants under the control (without Cd addition) N source had no distinctive effect on the above measured parameters, but the differences among the three N forms in these parameters became significant when plants were exposed to Cd stress. Cd stress significantly increased POD and CAT activities, and gultathione content, with Ca(NO 3 ) 2 -fed plants having the greatest POD and CAT activities and lowest glutathione content, and (NH 4 ) 2 SO 4 -fed plants being just opposite. Moreover, organic acid exudation varied also with N form for the Cd-stressed plants. In comparison with other two N forms, (NH 4 ) 2 SO 4 ,-treated plants had higher grain yield, N concentration and lower Cd concentration in plants. The current results indicated that (NH 4 ) 2 SO 4 is a better fertilizer for use in Cd contaminated soil.

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Section: Discussionmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 92%

The growth and some physiological responses of rice to Cd toxicity as affected by nitrogen form

et al. 2007

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“…(Chaney and Hornick, 1978). Nitrogen (N) and phosphorus (P) fertilizer application may increase Cd accumulation in plants (Oliver et al, 1993;Grant and Baily, 1997;Basta et al, 1998), and the effect of different N sources and rates vary markedly (Eriksson, 1990;Willaert and Verloo, 1992;Mair et al, 2002). Much work has been done by Zhu (2001) and Zhu et al (1999Zhu et al ( , 2000Zhu et al ( , 2002 on the interaction between potassium (K) and 137 Cs, which has shown that K significantly affected 137 Cs uptake by plants.…”

Section: Introductionmentioning

confidence: 99%

Effects of forms and rates of potassium fertilizers on cadmium uptake by two cultivars of spring wheat (Triticum aestivum, L.)

Zhao

Zhu

et al. 2004

Environment International

102

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A greenhouse pot experiment was conducted to study the influence of potassium fertilizers in different forms and rates on cadmium (Cd) uptake by two cultivars of spring wheat (Triticum aestivum, L.): Brookton and Krichauff. Potassium fertilizers were added to soil at four levels: 0, 55, 110 and 166 mg K kg À 1 soil as KNO 3 (N), KCl (C) or K 2 SO 4 (S). CdCl 2 was added to all the treatments at a uniform rate equivalent to 15 mg Cd kg À 1 soil. Plant shoot and root dry weights (DW) of both cultivars were reduced significantly by the addition of Kfertilizer in C and S treatments but there were only marginal changes in the N treatments. The Cd concentrations in shoots and whole plants increased significantly ( P < .001) with increasing K addition, from 37.5 to 81.4 mg kg À 1 and from 42.9 to 86.8 mg kg À 1 for Brookton and Krichauff, respectively. However, no obvious effect was observed in the N treatments, except for the highest K level (K3) where there was a sharp increase in Cd concentration compared to the lower additions. Forms of K-fertilizers significantly influenced the Cd concentrations in plant shoots and roots ( P < .001), but there was no significant difference between C and S treatments. This experiment showed that anions Cl À and SO 4 2 À increase Cd uptake by plants, which can be interpreted as Cl À and SO 4 2 À complexing readily with Cd 2 + and thereby increasing the bioavailability of Cd 2 + in soils. The effect of potassium itself on plant uptake of Cd was also observed. We suggest that when applying potassium fertilizer to Cd-contaminated soils, the forms and rates should be considered. D

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“…Addition of N generally tends to increase crop Cd uptake [102][103][104][105], with the effect of N attributed to variable pH changes due to N fertilizer in the rhizosphere (although the effects are often not consistent with this hypothesis), and counter ions added with the N source (for example calcium in nitrate-based N fertilizers) affecting fertilizer Cd partitioning in soil. Addition of P, excluding the effect of additional added Cd with the P, may increase plant Cd accumulation [106], decrease it [107], or have no effect [108].…”

Section: Cadmiummentioning

confidence: 99%

Fertilizer‐Borne Trace Element Contaminants in Soils

Stacey

McLaughlin

Hettiarachchi

2010

Trace Elements in Soils

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EFFECT OF NITROGEN SOURCE AND CALCITIC LIME ON SOIL pH AND POTATO YIELD, LEAF CHEMICAL COMPOSITION, AND TUBER CADMIUM CONCENTRATIONS

Cited by 57 publications

References 29 publications

The growth and some physiological responses of rice to Cd toxicity as affected by nitrogen form

The growth and some physiological responses of rice to Cd toxicity as affected by nitrogen form

Effects of forms and rates of potassium fertilizers on cadmium uptake by two cultivars of spring wheat (Triticum aestivum, L.)

Fertilizer‐Borne Trace Element Contaminants in Soils

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