Turkey Compost vs. Commercial Fertilizer: Three-Year Effects on Irrigated Pasture Production in Southern Utah
Applied Research
Melanie Heaton
Assistant Professor Ag and Natural Resources
Utah State University
Panguitch
Abstract
Irrigated pasture supports cow–calf production in southern Utah, where livestock generates approximately 75% of agricultural revenue in Garfield County. Rising fertilizer prices have increased producer interest in alternative nutrient sources such as turkey compost (poultry manure with bedding and shavings). This three-year study evaluated forage production and economic efficiency of turkey compost compared to commercial fertilizers in a high-elevation irrigated pasture system. Research was conducted at the Utah State University Panguitch Agricultural Experiment Station (6,600 ft elevation) using a randomized complete block design with four replications. Treatments included a control, urea, urea plus ammonium sulfate, and turkey compost. Commercial fertilizers were applied annually, while turkey compost was applied once in 2023. All fertilizer treatments significantly increased forage production compared to the unfertilized control (p < 0.05). Turkey compost increased pasture production 50% in year two and 21% in year three, demonstrating residual fertility effects consistent with gradual nutrient release reported in poultry litter research. Economic analysis suggests turkey compost may be more economical when applied less frequently, helping producers maximize pasture productivity and profitability.
Poster has NOT been presented at any previous NACAA AM/PIC
This poster is being submitted only for display at AM/PIC. Poster is not to be judged, but the abstract will be published in the proceedings.
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Authors: Melanie Heaton, Matt Yost
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Heaton, M. Assistant Professor Ag and Natural Resources, Utah State University Extension, Utah, 84759
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Yost, M. Agroclimate Specialist., Utah State University Extension, Utah, 84322