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ARS Home » Midwest Area » Bowling Green, Kentucky » Food Animal Environmental Systems Research » Research » Publications at this Location » Publication #245432

Title: Apparent Use Efficiency of Nitrogen and Phosphorus from Broiler Litter Applied to Bermudagrass

item Sistani, Karamat
item Adeli, Ardeshir
item Tewolde, Haile

Submitted to: ASA-CSSA-SSSA Annual Meeting Abstracts
Publication Type: Abstract Only
Publication Acceptance Date: 11/4/2009
Publication Date: 11/5/2009
Citation: Sistani, K.R., Adeli, A., Tewolde, H. 2009. Apparent Use Efficiency of Nitrogen and Phosphorus from Broiler Litter Applied to Bermudagrass. ASA-CSSA-SSSA Annual Meeting Abstracts. 2010, 41:1873-1884

Interpretive Summary:

Technical Abstract: More than 80% of broiler (chicken, Gallus gallus domesticus) litter produced annually is applied as a plant nutrient source, particularly N and P, to pastures. However, N losses during the process of litter N mineralization limit availability of N to crops. This study determined broiler litter N and P availability and apparent use efficiency (ANUE, APUE) to bermudagrass [Cynodon dactylon.] during the first year after litter application. Treatments consisted of three litter rates (3.3, 6.6, and 13.2 Mg ha-1), a commercial N fertilizer rate that provided 358 kg N ha-1 as ammonium nitrate (NH4NO3), and an untreated control. Results showed bermudagrass dry matter (DM) yield increased significantly with increase in litter rate. Commercial N fertilizer produced significantly greater DM yield than 3.3 and 6.6 Mg ha-1 of litter, but produced less DM yield than 13.2 Mg ha-1 of litter. The overall average of ANUE from litter was 39% compared to the 59% from fertilizer. The mean litter N availability to bermudagrass during the first year after litter application was 48.5, 112.5, and 222 kg ha-1 corresponding to the 3.3, 6.6, and 13.2 Mg ha-1 litter rates, respectively. The overall mean of litter N mineralization, which was surface broadcast to bermudagrass plots during the first year, was 59.5% of the total litter N applied. The APUE, averaged across the rate and locations, was 13.6%, which was quite smaller than ANUE of 39%. This finding of small APUE also validates the potential for P accumulation in soil after longterm animal manure application.