In-Season Application of Nitrogen and Sulfur in Winter Wheat

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dc.contributor.authorDhillon, Jagmandeep
dc.contributor.authorDhital, Sulochana
dc.contributor.authorLynch, Tyler
dc.contributor.authorFigueiredo, Bruno
dc.contributor.authorOmara, Peter
dc.contributor.authorRaun, W. R.
dc.date.accessioned2022-12-12T18:40:01Z
dc.date.available2022-12-12T18:40:01Z
dc.date.issued2019
dc.description.abstractDecreased atmospheric S deposition in the past 20 yr has led to increased S fertilizer consumption in winter wheat (Triticum aestivum L.). Producers often apply S without any soil test information. Experiments were conducted at Lahoma, Lake Carl Blackwell, and Perkins, OK (2011–2013) to assess the effect of N and S applied preplant and foliar on grain yield and grain N for winter wheat. In 2011–2012, urea ammonium nitrate (UAN) was applied preplant at rates of 40 and 80 kg N ha-1 additionally; UAN and urea-triazone (NSURE) were foliar-applied at rates of 10 and 20 kg N ha-1. Sulfur was foliar-applied as gypsum (CaSO4×2H2O) at 6 kg S ha-1. In 2013, trials were altered to apply 40 kg N ha-1 as UAN preplant, and 20 kg N ha-1 foliar-applied. Gypsum rates were adjusted at 0, 3, and 6 kg S ha-1 preplant, and S (MAX-IN-S) at 3 and 6 kg S ha-1 was foliar-applied. Sulfur did not increase grain yield or grain N concentration at any site. The interaction between foliar S and N and preplant S and N was not significant. Sulfur fertilizer application is less likely to benefit this region unless low levels of soil test S are identified before planting. Use of recommended soiltesting guides are encouraged. Although S applications are encouraged commercially, no response was observed in these trials, and all were on sites where soil organic carbon was low (<8.5 g kg-1), where the possibility of seeing S deficiency was greater.en_US
dc.identifier.citationDhillon, J., Dhital, S., Lynch, T., Figueiredo, B., Omara, P., & Raun, W. R. (2019). In‐season application of nitrogen and sulfur in winter wheat. Agrosystems, Geosciences & Environment, 2(1), 1-8. doi:10.2134/age2018.10.0047en_US
dc.identifier.other10.2134/age2018.10.0047
dc.identifier.urihttps://nru.uncst.go.ug/handle/123456789/6216
dc.language.isoenen_US
dc.publisherAgrosystems, Geosciences & Environment,en_US
dc.subjectApplicationen_US
dc.subjectNitrogenen_US
dc.subjectSulfuren_US
dc.subjectWinter Wheaten_US
dc.titleIn-Season Application of Nitrogen and Sulfur in Winter Wheaten_US
dc.typeArticleen_US
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