2011
DOI: 10.2134/jeq2010.0352
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Subsurface Application of Poultry Litter in Pasture and No‐Till Soils

Abstract: Poultry litter provides a rich nutrient source for crops, but the usual practice of surface-applying litter can degrade water quality by allowing nutrients to be transported from fields in surface runoff while much of the ammonia (NH3)-N escapes into the atmosphere. Our goal was to improve on conventional titter application methods to decrease associated nutrient losses to air and water while increasing soil productivity. We developed and tested a knifing technique to directly apply dry poultry litter beneath … Show more

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Cited by 54 publications
(65 citation statements)
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“…In other words, overall NH 3 volatilization losses in 2009 were more than 12 times higher from surface-applied litter than from subsurface (injected) litter and were more than 4 times higher from disked-in litter than from subsurface litter. These results were very similar to those from research studies on perennial grassland that also showed subsurface application of poultry litter prevented more than 90% of NH 3 loss when compared to surface-applied poultry litter Pote et al 2011). In Sweden, Rodhe and Karlsson (2002) applied broiler manure in May 1998 after using a harrow to break the soil surface, and found that about 39% of the NH 3 -N from the surface-applied manure was volatilized after five days, whereas incorporating the manure into the soil effectively prevented NH 3 volatilization.…”
Section: Resultssupporting
confidence: 86%
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“…In other words, overall NH 3 volatilization losses in 2009 were more than 12 times higher from surface-applied litter than from subsurface (injected) litter and were more than 4 times higher from disked-in litter than from subsurface litter. These results were very similar to those from research studies on perennial grassland that also showed subsurface application of poultry litter prevented more than 90% of NH 3 loss when compared to surface-applied poultry litter Pote et al 2011). In Sweden, Rodhe and Karlsson (2002) applied broiler manure in May 1998 after using a harrow to break the soil surface, and found that about 39% of the NH 3 -N from the surface-applied manure was volatilized after five days, whereas incorporating the manure into the soil effectively prevented NH 3 volatilization.…”
Section: Resultssupporting
confidence: 86%
“…The prototype poultry litter injector known as a Subsurfer (figure 1) has been described in more detail by Pote et al (2011). Briefly, it uses a patented internal auger system to distribute a steady flow of dry, untreated poultry litter from a 4,540 kg (10,000 lb) hopper capacity to eight shallow, parallel soil trenches simultaneously.…”
Section: Methodsmentioning
confidence: 99%
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“…Significant advances have been made in the arena of land application methods for poultry litter, including the development of subsurface placement technologies formerly available only for liquid manures. These technologies have been shown to significantly reduce nutrient runoff from litter-amended soils and even increase crop yields (Pote et al 2011). Their benefit is derived from the removal of litter from the soil surface where it serves as a concentrated source of contaminants, placing the litter near the roots of plants where litter-derived nutrients can be beneficially used.…”
mentioning
confidence: 99%
“…Improved N conservation due to subsurface application was demonstrated by increased PSNT values, significantly so in the spring (Fig. 1b), echoing Pote et al (2011). Significantly larger PSNT values after spring subsurface application than fall indicate N efficiencies increase with applications nearer planting.…”
Section: Agronomic Efficiencymentioning
confidence: 78%