Improving winter wheat grain yield and nitrogen use efficiency using nitrogen application time and rate

Simple item page
dc.contributor.authorAula, Lawrence
dc.contributor.authorOmara, Peter
dc.contributor.authorOyebiyi, Fikayo B.
dc.contributor.authorEickhoff, Elizabeth
dc.contributor.authorCarpenter, Jonathan
dc.contributor.authorNambi, Eva
dc.contributor.authorFornah, Alimamy
dc.contributor.authorRaun, William R.
dc.date.accessioned2022-12-12T18:23:34Z
dc.date.available2022-12-12T18:23:34Z
dc.date.issued2021
dc.description.abstractPreplant nitrogen (N) application, which involves placing nutrients in the soil before seeding, has been an integral part of crop production systems for decades. Some producers are known to apply N at least 21 d before planting. This may increase N loss and lower grain yield. This study evaluated the effect of timing and rate of N application on winter wheat (Triticum aestivum L.) grain yield and N use efficiency (NUE). An experiment with a factorial arrangement of treatments was set up in a randomized complete block design with three replications. Treatments included four N rates (0, 45, 90, and 135 kg ha–1) with each applied 7 or 30 d before planting, and at Feekes 5 (FK5). Grain N was analyzed using LECO CN dry combustion analyzer. The difference method [Grain N from (fertilized plot – check plot)]/N applied was used to compute NUE. Nitrogen application rate significantly affected grain yield (P ≤ .01). Although the rate may be temporally and spatially variable, approximately 90 kg N ha–1 was required to obtain yields that differ markedly from the check. Midseason applied N (FK5) had similar yields to preplant applied N in two of four siteyears and significantly increased yield at one site in 2020. Out of two sites, the timing of N application had a substantial effect on NUE in both years (P ≤ 0.11). In this case, NUE was increased by as much as 9.5% for midseason applied N compared to 30 d before planting N application time.en_US
dc.identifier.citationAula, L., Omara, P., Oyebiyi, F. B., Eickhoff, E., Carpenter, J., Nambi, E., ... & Raun, W. R. (2021). Improving winter wheat grain yield and nitrogen use efficiency using nitrogen application time and rate. Agrosystems, Geosciences & Environment, 4(1), e20148. DOI: 10.1002/agg2.20148en_US
dc.identifier.other10.1002/agg2.20148
dc.identifier.urihttps://nru.uncst.go.ug/handle/123456789/6214
dc.language.isoenen_US
dc.publisherAgrosystems, Geosciences & Environmenten_US
dc.subjectWinter wheat grain yielden_US
dc.subjectNitrogenen_US
dc.subjectNitrogen application time and rateen_US
dc.titleImproving winter wheat grain yield and nitrogen use efficiency using nitrogen application time and rateen_US
dc.typeArticleen_US
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Improving winter wheat grain yield and nitrogen use efficiency.pdf
Size:
830.41 KB
Format:
Adobe Portable Document Format
Description:
Article
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.71 KB
Format:
Item-specific license agreed upon to submission
Description:
Download
Collections
Natural Sciences