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FERTILIZER SOURCES ON BERMUDAGRASS PASTURES FOR STOCKER GRAZING
S. M. DeRouen, J. M. Gillespie, and J. D. Ward Hill Farm Research Station, Department of Agricultural Economics & Agribusiness, and Southeast Research Station 11/19/2018
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Objective of the Study Determine effects of broiler litter and commercial fertilizer applied to bermudagrass pastures on: 1) animal performance 2) economic implications 11/19/2018
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Experimental Procedures
Two-year study - conducted in 1999 and 2000 156 Angus-sired fall-born weaned crossbred calves were used: 84 head in 1999; 72 head in 2000 Stocking rate: 3.5 hd/acre in 1999; 3.0 hd/acre in 2000 11/19/2018
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Experimental Procedures (Continued)
121-day trial in 1999; 112-day trial in 2000 Eight pastures were used; pasture was experimental unit Monthly rising plate meter readings and forage clippings obtained 11/19/2018
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Fertilizer Sources (Treatments) Evaluated
BL tons/acre applied in early April & late June BL tons/acre applied in early April & 50 lb/acre N applied in early July CF lb/acre of (N-P-K) applied in mid-April, mid-May, & mid-June, & 50lb/acre of N applied in early July CF lb/acre of (N-P-K) applied in mid-April, late May, & early July 11/19/2018
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ACTUAL AMOUNT OF N-P-K BY FERTILIZER SOURCE
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ACTUAL AMOUNT OF N-P-K BY FERTILIZER SOURCE
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RELATIVE FORAGE AVAILABILITY-YR 1999
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RELATIVE FORAGE AVAILABILITY-YR 2000
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WEIGHT GAIN PERFORMANCE
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FERTILIZER COSTS 6
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NET RETURN/LOSS 6 11/19/2018
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CONCLUSIONS Similar weight gains for stockers were observed among pastures fertilized with either broiler litter or commercial fertilizer. Fertilizer costs were reduced by 37 to 41 % with the use of broiler litter compared to commercial fertilizer. At net economic loss resulted in 1999 by retaining calves and stockering over the summer, whereas, in 2000, a net economic return resulted except for one commercial fertilizer source. 11/19/2018
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