Extractability of zinc granulated with macronutrient fertilizers in relation to its agronomic effectivemess

Mortvedt, J. J.; Giordano, P. M.

doi:10.1021/jf60166a051

Cited by 18 publications

(26 citation statements)

References 9 publications

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“…There was no significant correlation between SOM and any of the soil-test variables was found. The only significant correlation was between DTPA-Mn concentration and soil pH which has been previously found in other work (Boring and Thelen, 2009;Mueller and Ruiz-Diaz, 2011). As expected, the correlation between soil Mn and pH was negative (r = -0.57).…”

Section: Relationships Between Tissue Nutrient Concentrations Grain supporting

confidence: 85%

“…The effectiveness of ZnO as a fertilizer primarily depends on the water-soluble Zn and not the total Zn concentration. A significant correlation exists between water-soluble fraction of Zn and Zn availability to crops from ZnO (Mortvedt and Giordano, 1969). To be plant available, ZnO should dissolve in the soil solution faster and to a greater extent.…”

Section: Soilmentioning

confidence: 99%

“…Increasing reports of Mn deficiency in soybean in the recent years have heightened awareness in the Midwestern states. Manganese deficiency is more likely to occur on soils with low moisture content, high soil pH, and low soil organic matter (SOM) concentration (Graham et al, 1994;Boring and Thelen, 2009;Mueller and Ruiz-Diaz, 2011). Above average yielding crops could further accelerate Mn depletion (Gettier et al, 1985b).…”

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Soybean Response to Broadcast Application of Boron, Chlorine, Manganese, and Zinc

2017

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A gronomy J our n al • Volume 10 9, I ssue 3 • 2 017 M icronutrients are essential for plant growth because these trace elements perform important biological functions. Defi ciencies of micronutrients in soils can signifi cantly reduce crop yield, quality, and economic return (Marschner, 2002). Soybean is an important cash crop in Minnesota being grown on 3.05 million ha in 2015 (USDA, 2016). Th ere has been increased pressure for farmers in Minnesota in the recent years to apply micronutrients to soybean due to a perception that defi ciencies have increased. Soybean response to fertilizer B has been reported in many areas in the United States. In Arkansas, Ross et al. (2006) found that soil-applied B increased soybean grain yield by 4 to 130% and increased trifoliate and grain B concentration. Application of 0.28 to 1.12 kg B ha-1 was suffi cient to produce maximum grain yield. Research in Georgia found that soil, leaf, and grain B concentration were signifi cantly increased with increasing rates of soil-applied B (Touchton et al., 1980). In 3 of the 9 yr, soybean yield increased when fertilizer B was applied. In a separate study, foliar application of 0.56 kg B ha-1 was found to be the optimal rate for increasing the number of pods per branch but application of 1.12 kg B ha-1 promoted the highest seed yield per plant due to increase in seed size (Schon and Blevins, 1990). In the Midwest, Oplinger et al. (1993) summarized 29 trials across Illinois, Ohio, Missouri, and Wisconsin and reported yield increase only in four sites on B-suffi cient soils. Chlorine plays an important role in gas exchange, photosynthesis, and disease resistance in crops. Defi ciency of Cl can negatively impact a crop's normal growth and reduce grain yield if aff ected by disease. In Minnesota, Cl defi ciency has not been reported for major fi eld crops. Chlorine defi ciency is unlikely because most agricultural fi elds in Minnesota routinely receive KCl fertilizer to prevent K defi ciency, which is 50% Cl by mass. Chlorine toxicity is a serious yield-limiting factor for soybean in the southern states of the United States. Toxicity of Cl is caused by accumulation of Cl in the upper soil profi le (Rupe et al., 2000). Chlorine accumulation occurs in poorly drained soils and with limited precipitation because these two factors promote soil Cl retention (Yang and Blanchar, 1993). Soybean grown in the poorly drained Flatwoods soils (fi ne, mixed, semiactive, mesic Aquic Hapludults) of Georgia which received Cl-containing fertilizer exhibited leaf scorching consistent with

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Section: Relationships Between Tissue Nutrient Concentrations Grain supporting

confidence: 85%

Section: Soilmentioning

confidence: 99%

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confidence: 99%

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Soybean Response to Broadcast Application of Boron, Chlorine, Manganese, and Zinc

2017

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“…The uptake and recovery of soil Zn by durum wheat plants is controlled throughout the growth cycle by fertilizer solubility, lability of the solubilized Zn fertilizer, the background concentration of labile Zn in soil, and the access of plant roots to labile Zn (Brennan, 2005;Wilkinson et al, 1968 ( Ball and Arguss, 1930;Hossner and Blanchar, 1969;Mortvedt and Giordano, 1969;Hettiararchchi et al, 2010). While the coating of phosphate-containing fertilizers with micronutrients is common, it has been shown that this form of fertilizer has lower agronomic effectiveness than other sources of Zn fertilizers.…”

Section: Discussionmentioning

confidence: 99%

“…The most common methodology for the measurement of fertilizer recovery is an indirect method where the response of plants to fertilizer is referenced against the plants receiving no Zn fertilizer, often termed agronomic or uptake recovery (Mortvedt and Giordano, 1969;Gonzalez et al, 2008;Shivay et al, 2008). Alternatively, radioisotope tracing and dilution techniques have been used to make a direct measurement of the plant uptake of soil and fertilizer Zn using the gammaemitting radioisotope 65 Zn (Tiller et al, 1972;Rule and Graham, 1976;Amer et al, 1980;Diesing et al, 2008;Erenoglu et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

A stable‐isotope methodology for measurement of soil‐applied zinc‐fertilizer recovery in durum wheat (Triticum durum)

McBeath

McLaughlin

Kirby

et al. 2013

Z. Pflanzenernähr. Bodenk.

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A growth-chamber study was used to develop a zinc stable-isotope ( 67 Zn) tracing technique to directly measure the amount of soil-applied zinc (Zn) granular fertilizer taken up by durum wheat (Triticum durum L.) in four different soil types. The 67 Zn-tracer technique was then applied under field conditions at one site to test the ability of the method to measure the crop recovery of soilapplied Zn granular fertilizer ( 67 Zn). The technique was developed by comparing plants treated with nil Zn fertilizer to natural-abundance-Zn-coated fertilizer and 67 Zn-coated fertilizer with plant parts analyzed for Zn isotopic composition using inductively coupled plasma-mass spectrometry. Zinc-fertilizer recovery under growth-chamber conditions was inversely related to the concentration of labile Zn in soils, with the plants on the most Zn-deficient soils having the greatest amount of Zn derived from the added fertilizer. Zinc derived from fertilizer ranged from 0.3% (Luvisol) to 0.6% (Solonetz) to 13% (Calcisol) and 18% (Lixisol) for soils with DTPA-extractable Zn of 3.5-0.21 mg kg -1 . Across the experiments, fertilizer recovery was measurable but very low (< 1% of added fertilizer being recovered by durum wheat). The recovery of Zn added to the Luvisol was slightly higher in the field than in the glasshouse (but all < 0.1%). Using this stableisotope technique, it was possible to directly assess the supply of soil-applied Zn fertilizers to crop plants.

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Comparison and modelling of extraction methods to assess agronomic effectiveness of fertilizer zinc

Degryse

Silva

Baird

et al. 2020

J. Plant Nutr. Soil Sci.

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Total Zn in fertilizer is a poor predictor of Zn availability in granular fertilizers. In this study, we compared different extraction methods using Zn fertilizers for which the agronomic effectiveness had previously been determined. Sixteen fertilizers were extracted by eight different procedures using five extractant solutions: water, 1 M ammonium acetate (pH 7.0), 74 mM EDTA (pH 7.0), 5 mM DTPA + 0.1 M MES (pH 6.2), and 0.12 M bis‐tris (pH 6). Modelling of Zn solubility and speciation was carried out with a chemical speciation program (Visual Minteq). The predicted solubilities were in good agreement with the observations, indicating chemical equilibrium. The three methods using pure water were highly correlated with each other and showed the strongest correlation with agronomic effectiveness (r = 0.81–0.90). The methods using extractants with strong pH buffering or high chelating capacity showed no or weak correlation with the agronomic effectiveness. Thus, water‐only based methods give the best indication of the availability of Zn in granular fertilizers, and are best suited for regulation or labeling of available Zn in fertilizer.

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Extractability of zinc granulated with macronutrient fertilizers in relation to its agronomic effectivemess

Cited by 18 publications

References 9 publications

Soybean Response to Broadcast Application of Boron, Chlorine, Manganese, and Zinc

Soybean Response to Broadcast Application of Boron, Chlorine, Manganese, and Zinc

A stable‐isotope methodology for measurement of soil‐applied zinc‐fertilizer recovery in durum wheat (Triticum durum)

Comparison and modelling of extraction methods to assess agronomic effectiveness of fertilizer zinc

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