Class
Article
College
College of Agriculture and Applied Sciences
Department
Plants, Soils, and Climate Department
Faculty Mentor
Jeanette Norton
Presentation Type
Poster Presentation
Abstract
As agriculture intensifies, the world faces a dual challenge of increasing food production while reducing impacts of excess reactive nitrogen (N) in the environment. A field study examining different N sources in corn silage under semi-arid conditions was conducted at the Greenville farm in northern Utah (41°45’ N, 1111°48’52 W) since 2012. The experimental design is a randomized complete block design with four blocks and four treatments: control (no nitrogen), low ammonium sulfate (AS 112 kg N/ha), high ammonium sulfate (AS 224 kg N/ha), and steer manure compost (224 kg total N/ha). We examined yield, nitrogen use efficiency (NUE), and soil bioavailable N. The average yield on dry matter basis from 2012 to 2019 for control, compost, AS100, and AS200 were 9.4, 12.3, 14.7, and 15.9 Mg/ha, respectively. Average estimate of N uptake from corn silage were 51, 80, 107 and 166 kg N/ha for Control, Compost, AS100, and AS200, respectively. From repeated measurement, AS200 produces highest yield, Nuptake and NUE. Compost produce higher yield, and N Uptake than control. In the topsoil, Compost treatment has significant impacts on soil protein and total N. Soil protein might be mineralized in the future for plant to uptake. ACE protein was higher in soil depth 0-30 cm than in deeper soil (30-60 cm) at 3.9 and 2.0 mg protein/g soil respectively. Long-term studies of NUE under field conditions may improve our understanding of the soil N pools that are the key to maintaining soil health and sustainable agroecosystems Presentation Time: Thursday, 9-10 a.m.
Location
Logan, UT
Start Date
4-8-2021 12:00 AM
Included in
Climate Commons, Plant Sciences Commons, Soil Science Commons
Nitrogen Use Efficiency and Soil Bioavailable Nitrogen in Corn Silage Production in a Semi-Arid Environment
Logan, UT
As agriculture intensifies, the world faces a dual challenge of increasing food production while reducing impacts of excess reactive nitrogen (N) in the environment. A field study examining different N sources in corn silage under semi-arid conditions was conducted at the Greenville farm in northern Utah (41°45’ N, 1111°48’52 W) since 2012. The experimental design is a randomized complete block design with four blocks and four treatments: control (no nitrogen), low ammonium sulfate (AS 112 kg N/ha), high ammonium sulfate (AS 224 kg N/ha), and steer manure compost (224 kg total N/ha). We examined yield, nitrogen use efficiency (NUE), and soil bioavailable N. The average yield on dry matter basis from 2012 to 2019 for control, compost, AS100, and AS200 were 9.4, 12.3, 14.7, and 15.9 Mg/ha, respectively. Average estimate of N uptake from corn silage were 51, 80, 107 and 166 kg N/ha for Control, Compost, AS100, and AS200, respectively. From repeated measurement, AS200 produces highest yield, Nuptake and NUE. Compost produce higher yield, and N Uptake than control. In the topsoil, Compost treatment has significant impacts on soil protein and total N. Soil protein might be mineralized in the future for plant to uptake. ACE protein was higher in soil depth 0-30 cm than in deeper soil (30-60 cm) at 3.9 and 2.0 mg protein/g soil respectively. Long-term studies of NUE under field conditions may improve our understanding of the soil N pools that are the key to maintaining soil health and sustainable agroecosystems Presentation Time: Thursday, 9-10 a.m.