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AerWay News from the Field
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Request for Modification of Nitrogen Coefficients with Aerway Applicators
Read complete article by following the link
SUBJECT: Request for Modification of Nitrogen Coefficients with Aerway Applicators
TO: Carroll Pierce, Chair, 1217 Committee
FROM: Lane Price, USDA-NRCS (on behalf of the INMC)
Background: Use of the Aerway applicator to apply lagoon effluent is being promoted as a
technology that can reduce odor and increase application efficiency (less labor and time)
compared with waste application through high pressure gun type sprinkler systems. There is a
potential that Aerway applications will result in reduced NH3 volatilization losses. The 1217
Committee requested that the NC Interagency Nutrient Management Committee evaluate the
potential for modifying nitrogen coefficients used in determining nutrient application rates for
nutrient management plans.
Response: On May 14, 2004, staff from the NCSU Departments of Soils and Biological and
Agricultural Engineering, NRCS, DENR-DWQ, DENR-DSWQ, NCDA&CS, and several private
sector consultants attended a demonstration of this technology in Duplin County. Based on
observations during this demonstration, as well as a formal discussion at the INMC meeting on
July 30, the INMC provides the following response:
1. It is the opinion of the INMC that surface effluent application with the Aerway system
likely reduces NH3 volatilization losses, in comparison to gun type sprinklers that exhibit
volatilization of NH3-N in the range of 30 to 50%.
2. Some of the applied effluent will flow into the spike tooth depressions in the soil surface,
which could subsequently increase NH4+ adsorption and further reduce potential
volatilzation loss. The extent of adsorption reactions would likely be minimal in coarse
textured soils. In the recent field demonstration, it appeared that less than 5 to 10 % of
the effluent moved into these depressions; therefore, the effect on reducing volatidue to increased adsorption would probably be small.
SUBJECT: Request for Modification of Nitrogen Coefficients with Aerway Applicators
TO: Carroll Pierce, Chair, 1217 Committee
FROM: Lane Price, USDA-NRCS (on behalf of the INMC)
Background: Use of the Aerway applicator to apply lagoon effluent is being promoted as a
technology that can reduce odor and increase application efficiency (less labor and time)
compared with waste application through high pressure gun type sprinkler systems. There is a
potential that Aerway applications will result in reduced NH3 volatilization losses. The 1217
Committee requested that the NC Interagency Nutrient Management Committee evaluate the
potential for modifying nitrogen coefficients used in determining nutrient application rates for
nutrient management plans.
Response: On May 14, 2004, staff from the NCSU Departments of Soils and Biological and
Agricultural Engineering, NRCS, DENR-DWQ, DENR-DSWQ, NCDA&CS, and several private
sector consultants attended a demonstration of this technology in Duplin County. Based on
observations during this demonstration, as well as a formal discussion at the INMC meeting on
July 30, the INMC provides the following response:
1. It is the opinion of the INMC that surface effluent application with the Aerway system
likely reduces NH3 volatilization losses, in comparison to gun type sprinklers that exhibit
volatilization of NH3-N in the range of 30 to 50%.
2. Some of the applied effluent will flow into the spike tooth depressions in the soil surface,
which could subsequently increase NH4+ adsorption and further reduce potential
volatilzation loss. The extent of adsorption reactions would likely be minimal in coarse
textured soils. In the recent field demonstration, it appeared that less than 5 to 10 % of
the effluent moved into these depressions; therefore, the effect on reducing volatidue to increased adsorption would probably be small.
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Slurry-application implement tine modification of soil hydraulic properties under different soil water content conditions for silt–clay loam soils
Tillage action associated with liquid slurry application systems/management practices can modify soil infiltration properties. The degree or nature of such modification will depend largely on the type of tillage implement used, and the soil conditions at time of tillage activity. The specific objective of this study is to evaluate differences in soil infiltration properties, as measured using pressure infiltrometers and Guelph permeameters, resulting from the immediate tine action of two commonly used slurry application tillage implements (Kongskilde Vibro-Flex (S-tine) and the AerWay SSD (rolling aerator-type tine)) over a variety of silt–clay loam soil water content conditions. The results indicated that there were consistent negative correlations between field saturated hydraulic conductivity and soil water content for all tine-disturbed and undisturbed soil treatments. For Kongskilde, field-saturated hydraulic conductivity was, on average, lower in tine-influenced furrow bottoms, relative to those measured in undisturbed conditions at similar depths for most water content conditions. Generally, the Kongskilde tine-action reduced macropore-based infiltration in the bottom of the furrow for most soil conditions, albeit, this effect was most pronounced at the higher soil water contents. For AerWay, the tine-disturbed soils had generally higher field saturated hydraulic conductivities than undisturbed soil treatments over the observed water content range. This effect was manifested to a greater degree at higher, relative to lower observed water contents. Read full article by following this link.
AerWay Testimonial
Mark Anderson, partner in Landview Farms - Eagle Bridge, N.Y.
Oversees 1100 milkers on two farms and spreads manure on 900 acres.
“We purchased our first 12Ft. AerWay SSD system in 2003 to control manure runoff on sloping hills. We spread 10,000 to 12,000 gallons per acre, sometimes on 10% slopes and the uniformity of the spreading with the AerWay is super compared to other spreaders. The manure stay’s where you put it, for that reason we purchased a second AerWay in 2004. Our neighbors are also happy with reduction in odor.
AerWay units pay for themselves as our corn yields have increased and the fertilizer purchases have decreased. A farmer can really put a dollar figure on the amount of money saved with the AerWay system. Landview Farms now owns 3 AerWays and we have 2 more units on order for this 2008 Spring.“
You can review more AerWay testimonials at www.aerway1.com
Oversees 1100 milkers on two farms and spreads manure on 900 acres.
“We purchased our first 12Ft. AerWay SSD system in 2003 to control manure runoff on sloping hills. We spread 10,000 to 12,000 gallons per acre, sometimes on 10% slopes and the uniformity of the spreading with the AerWay is super compared to other spreaders. The manure stay’s where you put it, for that reason we purchased a second AerWay in 2004. Our neighbors are also happy with reduction in odor.
AerWay units pay for themselves as our corn yields have increased and the fertilizer purchases have decreased. A farmer can really put a dollar figure on the amount of money saved with the AerWay system. Landview Farms now owns 3 AerWays and we have 2 more units on order for this 2008 Spring.“
You can review more AerWay testimonials at www.aerway1.com