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
","abstract_html":"<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>","abstract_has_math":false,"creators":["Gordon, Brett Lee"],"institution":null,"degree_name":"Master of Science in Crop, Soil & Environmental Sciences (MS)","degree_level":"Thesis","degree_discipline":null,"degree_department":null,"school":null,"contributors":["Gbur, Edward E. Jr.","Kelley, Jason P."],"advisors":["Slaton, Nathan A."],"committee_chairs":[],"committee_members":[],"year":2011,"date_issued":"2011-12-01T08:00:00Z","date_published":"2011-12-01T08:00:00Z","updated_at":"2026-07-24T00:58:14Z","subjects":["Biological sciences","Agronomy and Crop Sciences"],"languages":[],"rights":[],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"https://scholarworks.uark.edu/etd/255","outbound_label":"Repository record","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Gbur, Edward E. Jr.","Kelley, Jason P."]},{"key":"dc:contributor.advisor","label":"Advisor","values":["Slaton, Nathan A."]},{"key":"dc:creator","label":"Author","values":["Gordon, Brett Lee"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2011"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2017-09-29T07:00:00Z"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Thesis"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Master of Science in Crop, Soil & Environmental Sciences (MS)"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Biological sciences","Agronomy and Crop Sciences"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["https://scholarworks.uark.edu/etd/255"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["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
"]},{"key":"dc:title","label":"Title","values":["Determination of Poultry Litter's Nitrogen-Fertilizer Value for Winter Wheat Production"]}]}],"canonical_facts":{"dc:contributor":["Gbur, Edward E. Jr.","Kelley, Jason P."],"dc:contributor.advisor":["Slaton, Nathan A."],"dc:creator":["Gordon, Brett Lee"],"dc:date":["2011"],"dc:date.available":["2017-09-29T07:00:00Z"],"dc:description.abstract":["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
"],"dc:identifier":["https://scholarworks.uark.edu/etd/255"],"dc:subject":["Biological sciences","Agronomy and Crop Sciences"],"dc:title":["Determination of Poultry Litter's Nitrogen-Fertilizer Value for Winter Wheat Production"],"thesis:degree_level":["Thesis"],"thesis:degree_name":["Master of Science in Crop, Soil & Environmental Sciences (MS)"]},"updated_at":"2026-07-24T00:58:14Z"}