Determination of Poultry Litter's Nitrogen-Fertilizer Value for Winter Wheat Production

<p>Nitrogen (N) availability in poultry litter (PL) applied in the fall as a nutrient source for winter wheat (Triticum aestivum L.) has not been adequately characterized. Our objective was to determine a potentially available N (PAN) coefficient based on the inorganic-N fertilizer equivalence (FEQ) of fall-applied PL to winter wheat via field and laboratory research. Wheat grown at six site-years received 0, 84 and 168 kg N ha-1 as PL applied preplant and/or at-planting. The FEQ of PL-N was based on growth and yield responses of wheat fertilized with 22 to 191 kg N ha-1 applied in late winter as a urea-ammonium sulfate blend (UASB) which was used to calculate PAN. Tiller number, aboveground N uptake, and grain yield responses to UASB-N were characterized using linear and quadratic models. Soil amended with PL or urea was incubated at 5, 15, and 25°C to supplement field research results. Wheat receiving PL-N produced N uptake and yields that were 11 to 43 kg N ha-1 and 297 to 1474 kg ha-1 greater (p</p>

Name thesis:degree_name

Master of Science in Crop, Soil & Environmental Sciences (MS)

Level thesis:degree_level

Thesis

Year dc:date.available

2011

Author dc:creator

• Gordon, Brett Lee

Advisor dc:contributor.advisor

• Slaton, Nathan A.

Contributors dc:contributor

• Gbur, Edward E. Jr.
• Kelley, Jason P.

• Biological sciences
• Agronomy and Crop Sciences

Repository record dc:identifier

https://scholarworks.uark.edu/etd/255

OAI identifier oai:identifier

oai:scholarworks.uark.edu:etd-1254