Dealing with sulfur deficiency in Iowa corn production

Sawyer, John E.; Lang, Brian J.; Barker, Daniel W.; Cummins, George

doi:10.31274/icm-180809-25

Cited by 15 publications

(26 citation statements)

References 7 publications

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“…The commercial gypsum was only significantly greater than the control at one site. This may be an indicator that S was not limiting at the sites despite low ear leaf S concentrations as others have found significant increases in ear leaf S with as little as 10 lb S/acre commercial fertilizer (17). The low S concentrations were likely a product of cool temperatures rather than actual sulfur deficiencies.…”

Section: Leaf Nutrient Concentration Findingsmentioning

confidence: 87%

“…Historical work reports little crop response from S fertilization. More recent work shows yield increase, particularly in coarse‐textured, low‐OM soils (15,17). Studies conducted at various sites in Iowa reported increased corn yield as well as increased ear leaf S content (17), finding that yield increased with 10‐lb S/acre application but was not further increased with greater applications.…”

Section: Introductionmentioning

confidence: 99%

“…More recent work shows yield increase, particularly in coarse‐textured, low‐OM soils (15,17). Studies conducted at various sites in Iowa reported increased corn yield as well as increased ear leaf S content (17), finding that yield increased with 10‐lb S/acre application but was not further increased with greater applications. A study from Minnesota agreed that additions of as low as 6 lb S/acre could improve corn yield at all but the clayeyest sites tested with little further benefit from higher rates (15); that study also examined placement and cautioned against high rates placed near the seed.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Land Application of FGD Gypsum on Plant Yield and Crop Nutrient Concentration

Buckley

Wolkowski

2012

Crop Management

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Flue gas desulfurization (FGD) at coal burning plants produces a gypsum source that may provide agricultural benefits when land applied. This study was undertaken to quantify the effects of FGD gypsum applied to corn (Zea mays L.) and soybean (Glycine max L.). The FGD gypsum was hand applied at 22 sites at rates of 0, 0.5, 1, and 2 tons/acre after planting to small plots. Additional plots were treated with commercial gypsum fertilizer to provide 30 lb S/acre. Plant leaves were sampled at the R1 growth stage and analyzed for macronutrient concentration. The concentrations of P, K, Ca, and Mg were largely unaffected by treatment. Corn ear leaf S concentration increased with the highest application rates at five of the 16 corn sites. Soybean trifoliate S concentration increased with all rates of FGD gypsum at two of the six soybean sites. Effects seen in leaf concentration were likely related to lower early‐season S availability common in cool soils and may or may not affect crop yield. Corn yield was not affected by amendments at any of the sites tested. Soybean yield was increased by the 0.5‐ton/acre rate of FGD gypsum at one site. Overall, the application of FGD gypsum appears to have had neither a beneficial nor detrimental effect to crop production in the year of application.

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Section: Leaf Nutrient Concentration Findingsmentioning

confidence: 87%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effect of Land Application of FGD Gypsum on Plant Yield and Crop Nutrient Concentration

Buckley

Wolkowski

2012

Crop Management

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“…Efforts have been concentrated on the diagnosis of corn S status by quantifying S in soils and/or plants to predict the requirement for S in a fertilizer program. Measurements of extractable sulfate-S in soil, total S in plant material, the ratio of N and S in plants are the indices that have been used most frequently (Rehm and Clapp, 2008;Sawyer et al, 2009). Work done in wheat and oilseed rape (Blake-Kalff et al, 2000) has suggested the malate-to-sulfate peak area ratio as a reliable and practical indicator of S deficiency.…”

Section: Introductionmentioning

confidence: 99%

“…Work done in wheat and oilseed rape (Blake-Kalff et al, 2000) has suggested the malate-to-sulfate peak area ratio as a reliable and practical indicator of S deficiency. Although research to determine the best diagnostic method for S deficiencies in corn and other crops has been going for several years, still there is no agreement as to which method yields the best results (Scherer, 2001;Sawyer et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Influence of sulfur deficiency on chlorophyll‐meter readings of corn leaves

Pagani

Echeverría

2012

Z. Pflanzenernähr. Bodenk.

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Sulfur (S)-diagnostic tools are essential for rational use of S fertilizers. There is little information about the suitability of leaf greenness intensity to detect S deficiency in corn (Zea mays L.). This work evaluates, under controlled S-stressed conditions, (1) the performance of leaf greenness intensity as an indicator of the degree of S deficiency in corn, and (2) the advantage of the upper leaves in relation to the middle leaves for S-deficiency determination. A pot experiment using sand as growth medium was conducted in greenhouse with corn at S rates of 0, 5, 10, 20, and 40 mg kg -1 and sufficiency of other nutrients. Measurements of aboveground biomass (AB), total nitrogen (N), and S concentrations, and chlorophyll-meter readings (CMR) in upper and middle leaves, were performed at the growth stages of 6-7, 11-12, and 14-15 fully expanded leaves (V6-V7, V11-V12, and V14-V15, respectively). Sulfur application significantly increased AB, leaf S concentration, and CMR. Significantly positive relationships were obtained between leaf S concentration and CMR. A sulfur-sufficiency index (SSI) based on CMR measured in upper and middle leaves was significantly associated with AB (R 2 = 0.58 and 0.62 for the middle and upper leaves, respectively). It is concluded that under sufficiency of other nutrients and high-Sstressed conditions, leaf greenness intensity could be a good indicator of corn S status, although little or no advantage was found for taking CMR from the upper leaves.

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Corn response to incremental applications of sulfate‐sulfur

et al. 2021

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Reports of sulfur (S) deficiency symptoms in corn (Zea mays L.) fields of the Red River Valley of North Dakota and Minnesota are increasing. Current soil tests cannot predict the availability of S correctly due to the presence of gypsum in soils of this region. Field trials were conducted to determine corn yield and S uptake response to incremental applications of S (0, 11, 22, 33, and 44 kg S ha–1) in the form of ammonium sulfate [(NH4)2SO4]. Corn yield and S uptake varied significantly between sites. Out of 12 sites, only two sites had the highest corn yield without S application. Corn grain S removal ranged between 11 and 17 kg S ha–1 at harvest. Fertilizer‐S (SO4) application did not result in a significant yield response. The current recommendation of 11 kg S ha–1 may be necessary to reduce the risk of future S deficiency across this region and compensate for the removal of S in grain due to the uncertainty of adequate plant available S.

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Dealing with sulfur deficiency in Iowa corn production

Cited by 15 publications

References 7 publications

Effect of Land Application of FGD Gypsum on Plant Yield and Crop Nutrient Concentration

Effect of Land Application of FGD Gypsum on Plant Yield and Crop Nutrient Concentration

Influence of sulfur deficiency on chlorophyll‐meter readings of corn leaves

Corn response to incremental applications of sulfate‐sulfur

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