Does irrigated corn require multiple applications of sulfur?

Andria J. Kurbondski, Daniel Kaiser, Carl J Rosen, Apurba K. Sutradhar

Research output: Contribution to journalArticle

Abstract

Sulfur is applied to irrigated corn (Zea mays L.) grown on sandy soils. The objective of this study was to evaluate the sprinkler-irrigated corn response to S. Treatments were a factorial combination of 0, 14, 28, and 42 kg S ha-1 as (NH4)2SO4 applied on the soil surface at four locations at planting and in season (V5). Tissue samples were collected at V8 and R2 and evaluated along with corn grain yield and soil pore water SO2 2--S concentration measured at 60 cm with suction tube lysimeters. Application of S increased V8 plant mass, V8 whole plant S concentration and S uptake, and R2 leaf S concentration but did not increase corn grain yield. Decreased V8 plant mass was a result of S deficiency and was only corrected when some S was applied at planting. A total of 28 kg S ha-1 was sufficient to ensure adequate plant growth and S uptake whether S was applied at planting, in-season, or as a combination of the two timings. Concentrations of S were elevated in soil pore water from at planting and in-season S application indicating a portion of the S applied were still available for most-and at the end of-the growing season. Sulfur fertilizer is crucial early in the growing season for irrigated corn to ensure optimal corn growth. Rate of application is more important than time of S application in irrigated corn production. Incidental applications of S may reduce the need of S fertilizer for irrigated corn.

Original languageEnglish (US)
Pages (from-to)1124-1136
Number of pages13
JournalSoil Science Society of America Journal
Volume83
Issue number4
DOIs
StatePublished - Jan 1 2019

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sulfur
maize
corn
soil pore water
planting
porewater
growing season
grain yield
soil water
fertilizer
sulfur fertilizers
uptake mechanisms
sprinklers
lysimeters
lysimeter
sandy soil
suction
sandy soils
application rate
soil surface

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Does irrigated corn require multiple applications of sulfur? / Kurbondski, Andria J.; Kaiser, Daniel; Rosen, Carl J; Sutradhar, Apurba K.

In: Soil Science Society of America Journal, Vol. 83, No. 4, 01.01.2019, p. 1124-1136.

Research output: Contribution to journalArticle

Kurbondski, Andria J. ; Kaiser, Daniel ; Rosen, Carl J ; Sutradhar, Apurba K. / Does irrigated corn require multiple applications of sulfur?. In: Soil Science Society of America Journal. 2019 ; Vol. 83, No. 4. pp. 1124-1136.
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