Mitigating zinc deficiency and achieving high grain Zn in rice through integration of soil chemistry and plant physiology research

Impa, Somayanda M.; Johnson‐Beebout, Sarah E.

doi:10.1007/s11104-012-1315-3

Cited by 139 publications

(82 citation statements)

References 214 publications

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“…However in both the on-farm trials Zn concentration in husk was sugnificantly more with foliar than with soil application of Zn. Impa and Johnson-Beebout (2012) reported that biofortification recovery of Zn with foliar application was 8 times of that obtained with soil application. However data reported by Shivay and Prasad (2010) suggested that Zn concentration in rice grain was 47.5 mg kg -1 , while that in kernel was only 40.3 mg kg -1…”

Section: Discussionmentioning

confidence: 99%

Relative Efficiency of Zinc-Coated Urea and Soil and Foliar Application of Zinc Sulphate on Yield, Nitrogen, Phosphorus, Potassium, Zinc and Iron Biofortification in Grains and Uptake by Basmati Rice (Oryza sativa L.)

Shivay¹,

Prasad²,

Singh³

et al. 2015

JAS

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Two on-farm trials conducted one each in Aligarh and Meerut districts of the state of Uttar Pradesh, India on zinc (Zn) deficient soils during the rainy season (July-October) showed that Zn application increased not only Zn concentration and uptake by rice but also increased protein content of rice kernels and concentrations of Fe, N, P and K due to the overall improvement in crop growth. Foliar application of Zn was better from the viewpoint of Zn biofortification of rice kernels; nevertheless much of the foliar applied Zn was retained in husk. Since, foliar application of Zn is made at a late stage of crop growth, hence it was not as effective as soil application in increasing yield attributes, yield and concentration and uptake of Fe, N, P and K in rice. This study brought out that adequate soil application of Zn sulphate followed by its foliar application is the best approach. Zn coated urea applying less than half the amount of Zn as applied through soil + foliar application was very close to it and is quite promising.

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Section: Discussionmentioning

confidence: 99%

Relative Efficiency of Zinc-Coated Urea and Soil and Foliar Application of Zinc Sulphate on Yield, Nitrogen, Phosphorus, Potassium, Zinc and Iron Biofortification in Grains and Uptake by Basmati Rice (Oryza sativa L.)

Shivay¹,

Prasad²,

Singh³

et al. 2015

JAS

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“…4). Generally, under anaerobic or flooding condition, redox potential (Eh) was low, Zn in soil was more easily to be precipitated as zinc sulphide, zinc carbonate or zinc oxy-hydroxides (Kirk, 2004;Rehman et al, 2012;Impa and Johnson-Beebout, 2012). Under NFI condition, paddy soils were frequently suffered from the wetting-drying cycles and aerobic-anaerobic cycles (Fig.…”

Section: Discussionmentioning

confidence: 99%

“…Zn is an important micronutrient for human, it was linked with function of human immune system, neuro-sensory function, reproductive health, Fe absorption and brain function (Impa and Johnson-Beebout, 2012). Rice foodstuffs were often low in Zn concentrations especially when it was produced from a Zn deficiency soil.…”

Section: Discussionmentioning

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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“…This variation also associates with the status of improvement of each ploidy. The wider range ( Table 1 and Table 2) for the value of Zn and Fe could be associated with the fertility status of the soil [60] and nutrient uptake potential of each variety [61] [62], and the precipitation or adsorption of Zn with various soil components, depending on the pH and redox potential [31] and previous crop grown [63].…”

Section: Genetic Biofortificationmentioning

confidence: 99%

Linking Agriculture with Health through Genetic and Agronomic Biofortification

Melash¹,

Mengistu²,

Aberra³

2016

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Malnutrition and associated health problems are partly related to minerals and vitamins deficiencies where anemia and stunting are the major diseases affecting nearly half of pregnant women and about 20% children under age of five, respectively in developing countries. Despite the significant progress made in recent decades, prevalence of stunting in Ethiopia remains high (44%, among children) that necessitate the country yet to make significant investment in nutrition and health. Strategies designed to overcome the problem range from micronutrient rich foods supplement to complementing foods with vegetables and fruits. However, such strategies are expensive as well as not sustainable to reach the poor households of developing countries. The persistence of the problem calls for agriculture based alternative solutions such as agronomic biofortification and micronutrients biofortification through plant breeding. Utilization of crop wild relatives, local landraces and old cultivars are proved to contain sufficient grain micronutrients and their utilization in breeding programs can solve the deficiency of micronutrients such as zinc and iron. Similarly, agronomic biofortification could improve grain Zn and Fe contents in several folds. Application methods and crop developmental stages during which fortification applied significantly determine the efficiency of fortification. Foliar application at heading and milking stages could accumulate very high Zn and Fe in cereal grains. The synergistic effect of genetic and agronomic fortification could also be utilized to produce Zn and Fe rich food crops. Hence, linking agriculture with nutrition and health could offer equitable, effective, sustainable and cheap solutions to micronutrients malnutrition and their deficiency related health problems.

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Mitigating zinc deficiency and achieving high grain Zn in rice through integration of soil chemistry and plant physiology research

Cited by 139 publications

References 214 publications

Relative Efficiency of Zinc-Coated Urea and Soil and Foliar Application of Zinc Sulphate on Yield, Nitrogen, Phosphorus, Potassium, Zinc and Iron Biofortification in Grains and Uptake by Basmati Rice (Oryza sativa L.)

Relative Efficiency of Zinc-Coated Urea and Soil and Foliar Application of Zinc Sulphate on Yield, Nitrogen, Phosphorus, Potassium, Zinc and Iron Biofortification in Grains and Uptake by Basmati Rice (Oryza sativa L.)

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

Linking Agriculture with Health through Genetic and Agronomic Biofortification

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