Zinc Fertilizers

Mortvedt, J. J.; Gilkes, R. J.

doi:10.1007/978-94-011-0878-2_3

Cited by 66 publications

(47 citation statements)

References 12 publications

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“…These results support the findings of previous researchers where higher solubility Zn fertilizers resulted in greater levels of Zn uptake and biomass Zn concentrations (Mortvedt, 1992;Mortvedt and Gilkes, 1993;Amrani et al, 1997Amrani et al, , 1999Gangloff et al, 2000).…”

Section: Downloaded By [Uppsala Universitetsbibliotek] At 17:24 11 Ocsupporting

confidence: 95%

“…Recent studies have shown that Zn fertilizers with high water solubility are the most effective way to correct Zn deficiencies (Mortvedt, 1992;Mortvedt and Gilkes, 1993;Amrani et al, 1997Amrani et al, , 1999Gangloff et al, 2000;Slaton et al, 2005). Zinc fertilizer water solubility levels of about 40-50% of the total Zn are needed to meet the Zn requirements for the current crop (Mortvedt, 1992;Amrani et al, 1999), and high correlations have been found between Zn fertilizer water solubility and plant growth and Zn uptake (Amrani et al, 1999).…”

Section: Introductionmentioning

confidence: 97%

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Zinc Fertilizer Solubility and Its Effects on Zinc Bioailability Over Time

Shaver

Westfall

Ronaghi

2007

Journal of Plant Nutrition

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Studies have found that low water-soluble zinc (Zn) sources are not as effective in supplying Zn for plant use as highly water soluble ZnSO 4 ·2H 2 O. However, there is a question as to the residual effects of Zn from low water-soluble fertilizers on subsequent crops. The objective of this greenhouse study was to determine the relationship between water solubility of Zn fertilizers and Zn availability over four cropping periods. Three Zn fertilizers with 99.7, 56.0, and 6.0% water solubility were evaluated at rates equivalent to 0, 5, 10, 15, and 20 kg Zn ha −1 . Four consecutive corn (Zea mays, L.) crops were grown in pots to the V-10 growth stage to determine Zn residual effects. Zinc fertilizer was only applied to the first crop, requiring subsequent corn crops to use residual Zn for nutrient needs. Results show that Zn sources with medium and low water solubility did not become more available over time, nor did they supply enough Zn to meet the crop's needs. The highly water-soluble source was effective in supplying Zn for two crops, after which plants showed Zn deficiencies. Zinc fertilizers of low solubility do not increase plant-available Zn over time. These results complement our previous research, and support the conclusion that Zn fertilizers of low water solubility are ineffective Zn sources for corn.

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Section: Downloaded By [Uppsala Universitetsbibliotek] At 17:24 11 Ocsupporting

confidence: 95%

Section: Introductionmentioning

confidence: 97%

Zinc Fertilizer Solubility and Its Effects on Zinc Bioailability Over Time

Shaver

Westfall

Ronaghi

2007

Journal of Plant Nutrition

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“…Zinc sulphate is the most commonly used fertilizer compound (ZnSO 4 Á7H 2 O containing 26% Zn, or ZnSO 4 ÁH 2 O containing 37% Zn). Other Zn compounds used include Zn chloride (ZnCl 2 ), Zn nitrate (Zn(NO 3 ) 2 ), Zn oxide (ZnO), Zn oxy-sulphate and Zn-coated urea (Mortvedt and Gilkes 1993). Superphosphate is an effective combined source of P and Zn with \600 mg Zn kg -1 present as an impurity (Holloway et al 2008).…”

Section: Zinc Fertilizationmentioning

confidence: 99%

Soil factors associated with zinc deficiency in crops and humans

Alloway

2009

Environ Geochem Health

794

496

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Zinc deficiency is the most ubiquitous micronutrient deficiency problem in world crops. Zinc is essential for both plants and animals because it is a structural constituent and regulatory co-factor in enzymes and proteins involved in many biochemical pathways. Millions of hectares of cropland are affected by Zn deficiency and approximately one-third of the human population suffers from an inadequate intake of Zn. The main soil factors affecting the availability of Zn to plants are low total Zn contents, high pH, high calcite and organic matter contents and high concentrations of Na, Ca, Mg, bicarbonate and phosphate in the soil solution or in labile forms. Maize is the most susceptible cereal crop, but wheat grown on calcareous soils and lowland rice on flooded soils are also highly prone to Zn deficiency. Zinc fertilizers are used in the prevention of Zn deficiency and in the biofortification of cereal grains.

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“…The application of those fertilizers to soil is thought to lead to an increased zinc uptake in plants (Lindsay 1972, Mortvedt andGilkes 1993).…”

Section: Uptake and Distribution In Terrestrial Plantsmentioning

confidence: 99%