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ARS Home » Southeast Area » Florence, South Carolina » Coastal Plain Soil, Water and Plant Conservation Research » Research » Publications at this Location » Publication #409964
Research Project: Innovative Manure Treatment Technologies and Enhanced Soil Health for Agricultural Systems of the Southeastern Coastal Plain

Location: Coastal Plain Soil, Water and Plant Conservation Research

Title: Agronomic effectiveness of nutrients recovered from animal manure

Author
item Paye, Wooiklee
item Vanotti, Matias
item Szogi, Ariel
item HERRERO, RAUL - Miguel Hernandez University
item Shumaker, Paul

Submitted to: ASA-CSSA-SSSA Annual Meeting Abstracts
Publication Type: Abstract Only
Publication Acceptance Date: 8/8/2023
Publication Date: 10/29/2023
Citation: Paye, W.S., Vanotti, M.B., Szogi, A.A., Herrero, R.M., Shumaker, P.D. 2023. Agronomic effectiveness of nutrients recovered from animal manure. ASA-CSSA-SSSA Annual Meeting Abstracts.

Interpretive Summary: Abstract only

Technical Abstract: New technologies have been developed that can extract and recover concentrated nitrogen (N) and phosphorus (P) from animal manure, which can be returned to the field as fertilizers. Yet, there is a need to know the agronomic effectiveness of these recovered nutrients compared to commercial fertilizers. In a greenhouse study, we evaluated the agronomic effectiveness of N and P recovered from swine manure (RN and RP, respectively) compared to commercial N and P fertilizers: urea (CN), and triple super phosphate (CP). Annual ryegrass (Lolium multiflorum Lam) was the test crop. The RN was a liquid NH4+ extracted from manure using a gas-permeable membrane process (US Patent 9,005,333). The RP was an amorphous calcium phosphate solid extracted from swine manure using chemical P precipitation after the removal of inorganic carbon with nitrification (US Patent 6,893,567). Treatments included CN and RN applied at 0, 50, 100, 200, and 400 kg N ha-1 rates in combination with CP or RP at 88 kg P ha-1. Results showed CN and RN had similar ryegrass dry matter yield at each N rate when combined with CP. However, the all-recovered nutrient combination (RN×RP) produced 28, 24, and 16% more dry matter at the 50, 100, and 200 kg N ha-1 rates, and 180 % more dry matter at the 400 kg N ha-1 rate, compared to the commercial and recovered nutrient combination (CN×RP). Ryegrass N uptake of the RN×RP treatment combination at 400 kg N ha-1 was 158% higher than CN×RP treatment. Our results suggest that by using advanced methods, nutrients recovered from animal manure could be an adequate substitution for commercial fertilizers in a circular agricultural production system.