We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Spring wheat yield and grain quality response to nitrogen rate.
- Authors
Walsh, Olga S; Marshall, Juliet; Nambi, Eva; Shafian, Sanaz; Jayawardena, Dileepa; Jackson, Chad; Lamichhane, Ritika; Ansah Owusu, Emmanuella; McClintick‐Chess, Jordan
- Abstract
Nitrogen (N) is the most limiting nutrient in cereal production, yet its use efficiency remains very low at only 35%. Nutrient use efficiency (NUE) is crucial for increasing crop yield and quality while reducing fertilizer inputs and minimizing environmental damage. Optimum N rates that maximize yield without reducing NUE have been found to vary from location to location. This field study assessed the effect of N rates on the yield and quality of spring wheat (Triticum aestivum L.) at five locations in southern Idaho in 2015–2017. Nitrogen was applied as urea (46–0–0) immediately after planting at five rates: 0, 84, 168, 252, and 336 kg ha–1. Nitrogen application improved grain quality (increased protein) even when no increase in yield was noted. Nitrogen use efficiency and N uptake were affected by N rate at only 2 and 4 of 14 site‐years, respectively. These observations highlight the challenging task of pinpointing the appropriate N rates for optimizing wheat yield, grain protein, N uptake and NUE; and the importance of adjusting N rates based on location, year, and prevalent environmental conditions. Core Ideas: Application of all N fertilizer at planting is not efficient for wheat. Nitrogen fertilizer rates for wheat should account for site‐ and year‐specific conditions.When prescribing N rates to wheat, yield potential and responsiveness to N should be considered.Higher N rates resulted in enhanced grain protein content, but low N use efficiency.
- Subjects
IDAHO; GRAIN yields; NITROGEN fertilizers; CROP quality; CROP yields; ENVIRONMENTAL degradation
- Publication
Agronomy Journal, 2022, Vol 114, Issue 4, p2562
- ISSN
0002-1962
- Publication type
Article
- DOI
10.1002/agj2.21101