Improving zinc bioavailability in transition from flooded to aerobic rice. A review

Gao, Xiaopeng; Hoffland, Ellis; Stomph, T.J.; Grant, C. A.; Zou, Chunqin; Zhang, Fusuo

doi:10.1007/s13593-011-0053-x

Cited by 76 publications

(49 citation statements)

References 114 publications

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“…In NDR359, the grains with husk accumulated higher content of Zn than PD16 but in dehulled grains PD16 acquired higher Zn concentration than NDR359 and this indicated that more Zn concentrated in husk part of NDR359 grains. Genotypic variations in grain Zn concentration have been attributed to the difference in physiological processes (Gao et al 2012). Recently, the results of Bharti et al (2013) also showed the highest Zn content in wheat grains under the treatment receiving soil application of 20 kg Zn/ha along with foliar spray of 0.5% of zinc sulphate solution.…”

Section: Resultsmentioning

confidence: 99%

Enrichment of <sup>65</sup>Zn in two contrasting rice genotypes under varying methods of zinc application

et al. 2014

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Zinc (Zn) is an essential micronutrient for growth and development of almost all organisms and its deficiency severely affects the health of plants, animals and humans. In order to investigate the enrichment of Zn in cereals a pot experiment was performed in two contrasting rice varieties viz., PD16 (zinc efficient) and NDR359 (zinc inefficient) under different levels of zinc regimes such as control (0 Zn), soil application (5 mg Zn/kg soil tagged with 3.7 MBq of 65 Zn/pot), foliar spray of 0.5% ZnSO 4 at 30, 60 and 90 days (925 KBq of 65 Zn/pot), soil application (5 mg Zn/kg soil tagged with 3.7 MBq of 65 Zn/pot) + foliar spray of 0.5% ZnSO 4 at 30, 60 and 90 days (925 KBq of 65 Zn/pot). Both varieties markedly differ in 65 Zn accumulation and grain Zn content. NDR359 showed poor translocation efficiency and accumulated relatively less 65 Zn in all the plant parts. In both rice varieties, highest concentration of Zn in dehusked grains could be obtained with soil application of Zn + foliar spray of zinc sulphate. Though NDR359, a zinc inefficient variety exhibited poor zinc translocation efficiency yet, it contained more Zn content in grains with husk and dehusked grains than PD16.

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Section: Resultsmentioning

confidence: 99%

Enrichment of <sup>65</sup>Zn in two contrasting rice genotypes under varying methods of zinc application

et al. 2014

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“…The availability of Fe, Zn and Cu in soil significantly correlated with their respective concentrations grain. Soil pH, redox reactions, plant physilogy (Growth stage) and rhyzosphere activity are the main factors controlling the availability in soil and concentration of micronutrients in grain (Dobermann & Fairhurst, 2000;Gao et al, 2012;Marchner, 2012) mediated by the transition from flooding to aerobic condition. Mn detected in soil did not correlate with Mn concentration in flag leaf and showed a negative correlation with grain Mn (p < 0.05).…”

Section: Relationship Among Soil Plant and Grain Micronutrients Compmentioning

confidence: 99%

“…Usually those deficiencies are afforded by the applications of chemical fertilizer (edaphic and foliar) or organic amendment. The application of Zn fertilizer has had a positive response in wheat (Triticum aestivum L.), (Cakmak, 2008), sorghum (Sorghum bicolor L.) and rice (Gao et al, 2012). Iron is another important micronutrient for plant and human health.…”

Section: Introductionmentioning

confidence: 99%

Control of Micronutrients Availability in Soil and Concentration in Rice Grain through Field Water Management

Fong¹,

Masunaga²,

Sato³

2015

JAS

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A pot experiment was conducted under different water managements, namely control (continuous flooding condition), 2,3,4WAH (water was drained at two to four weeks after heading), and FCap (the soil moisture was kept at field capacity level, to maintain aerobic soil condition). We examined the influence of the establishment of aerobic soil condition at different timing of rice post-heading stage. The results showed that water managements changed soil redox potential and pH that were known to be responsible of micronutrients availability in soil. Transition from flooding condition to aerobic condition during rice post-anthesis stage, reduced pH toward its initial value as well as Fe availability in soil. Although soil was re-oxidized in 2,3,4WAH treatments, which reduced Fe availability in soil from the level of control treatment, concentration of Fe in grain did not differ between control and drained treatments. Correlation analyses exhibited that the reduction of Fe availability in soil under aerobic condition in 2,3,4WAH and FCap enhanced Zn and Cu availabilities in soil and increased concentration of Zn, Cu and Mn in grain. The results point up toward that, enhancement of micronutrient availability in soil during post-heading stage are strongly associated with its grain micronutrient concentration. Establishment of aerobic condition from two weeks after heading increased the grain Zn, Cu and Mn concentration by 11, 20 and 35 percent respectively over the values in flooding condition, without negative effects on yield parameters. Unlike control and 2,3,4WAH treatments, FCap that kept aerobic soil condition performed high concentration of grain micronutrients but its low yield.

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“…But in calcareous soil, Gao et al (2006) found that shifting from flooded to aerobic rice cause Zn deficiency and Johnson-Beebout et al (2009) reported that soil available Zn and plant Zn uptake increased with the oxidized soil treatment compared with the very anaerobic flooding soil. Gao et al (2012) concluded that the contrasting results could be due to the difference in soil sulfur content and the achievable redox conditions in the two studies. The bioavailability of Zn in paddy soil was determined by many factors such as soil pH, Eh, dissolved organic matters and Fe and Mn oxides contents, the dominant processes may differ among soils and led to an apparent disagreement among studies.…”

Section: Introductionmentioning

confidence: 98%

“…Dry-wet cycle or mid-season drainage in rice field frequently results in high exchangeable metals in soil solution (Liu et al, 2010;Xu et al, 2014) and high crop uptake Xu et al, 2013a). When it comes to Zn, flooded soils always have lower Zn availability than non-flooded soil (Kirk, 2004;Alloway, 2008;Rehman et al, 2012), short-term drainage of flooded fields or drier water management is a strategy to increase soil Zn availability for mitigation of Zn deficiency in most non-calcareous soil (Neue et al, 1998;Impa and JohnsonBeebout, 2012;Gao et al, 2012;Rehman et al, 2012;Hussain et al, 2013). But in calcareous soil, Gao et al (2006) found that shifting from flooded to aerobic rice cause Zn deficiency and Johnson-Beebout et al (2009) reported that soil available Zn and plant Zn uptake increased with the oxidized soil treatment compared with the very anaerobic flooding soil.…”

Section: Introductionmentioning

confidence: 99%

Water Saving Irrigation Improves the Solubility and Bioavailability of Zinc in Rice Paddy

YuPing²,

Sung-Bum³

et al. 2015

IJAB

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Fields experiment was done to investigate the effect of a typical water saving irrigation technique, namely non-flooding controlled irrigation (NFI), on the extractability, solubility, and bioavailability of zinc (Zn) in a non-polluted paddy soil. The Zn contents in the soil solutions, soil extractions by modified BCR (European Community Bureau of Reference) sequential extraction procedure, and the plant digestions were measured. Compared with the Zn in flooding irrigation (FI) soil, Zn contents in extractable (EXT) form and Zn contents in soil solutions was increased in 0-20 cm NFI soil, accompanied with a little reduction of soil Zn in oxidizable (OXD) form. That confirmed the Zn in OXD form was released into soil solution under the wetting-drying cycle condition in NFI fields, and hence resulted in high extractability and solubility of Zn in top surface soil. As a result, Zn contents in the rice plant parts in NFI fields were higher than in FI fields. It can be concluded that NFI irrigation is help to enhance soil Zn bioavailability and food Zn nutrients status in the soil without Zn-pollution and Zn deficiency, but might led to soil Zn depletion in Zn deficient soil or rice foodstuffs pollution in Zn-polluted soil.

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Improving zinc bioavailability in transition from flooded to aerobic rice. A review

Cited by 76 publications

References 114 publications

Enrichment of <sup>65</sup>Zn in two contrasting rice genotypes under varying methods of zinc application

Enrichment of <sup>65</sup>Zn in two contrasting rice genotypes under varying methods of zinc application

Control of Micronutrients Availability in Soil and Concentration in Rice Grain through Field Water Management

Water Saving Irrigation Improves the Solubility and Bioavailability of Zinc in Rice Paddy

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