Nicolas Quintana Ashwell

Dr. Nicolas Quintana Ashwell

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Research Focus & Metrics

Academic Career Length

17Years (2010-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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27 July 2020 in Agronomy
Verified
Journal Article
Open access
PDF file
NANicolas Quintana Ashwell
Nicolas Quintana Ashwell
DGDrew Gholson
Drew Gholson
LKL Jason Krutz
L Jason Krutz
CHChristopher G. Henry
Christopher G. Henry
TCTrey Cooke
Trey Cooke
This article identifies irrigated row-crop farmer factors associated with the adoption of water-conserving practices. The analysis is performed on data from a survey of irrigators in Mississippi. Regression results show that the amount of irrigated area, years of education, perception of a groundwater problem, and participation in conservation programs are positively associated with practice adoption; while number of years farming, growing rice, and pumping cost are negatively associated with adoption. However, not all factors are statistically significant for all practices. Survey results indicate that only a third of growers are aware of groundwater problems at the farm or state level; and this lack of awareness is related to whether farmers noticed a change in the depth to water distance in their irrigation wells. This evidence is consistent with a report to Congress from the Government Accountability Office (GAO) that recommends policies promoting the use of: (1) more efficient irrigation technology and practices and (2) precision agriculture technologies, such as soil moisture sensors and irrigation automation.

1 February 2018 in Resource and Energy Economics
Verified
Journal Article
Open access
NANicolas Quintana Ashwell
Nicolas Quintana Ashwell
JPJeffrey M. Peterson
Jeffrey M. Peterson
NHNathan P. Hendricks
Nathan P. Hendricks

4 May 2021 in Translational Animal Science
Verified
Journal Article
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Anna T. MaherAnna T. Maher
Anna T. Maher
NANicolas Quintana Ashwell
Nicolas Quintana Ashwell
KMKristie A Maczko
Kristie A Maczko
DTDavid T Taylor
David T Taylor
JTJohn A Tanaka
John A Tanaka
MRMatt C Reeves
Matt C Reeves
Beef cattle ranching and farming is a major agricultural industry in the United States that manages an estimated 147 million ha of private land and uses approximately 92% of forage authorized for grazing on federal rangelands. Rangelands, as working landscapes, sustain beef cattle ranching while providing habitat for wildlife, recreation, and open space amenities, as well as spiritual and cultural values that define a way of life. Historically, discussions regarding the economics of beef cattle ranching have focused primarily on the value of beef production but have more recently expanded to consider related ecosystem services. A systematic search of peer-reviewed literature published between 1998 and 2018 found 154 articles that considered ecosystem services from rangelands/grasslands. Of these, only two articles (1%) provided an in-depth economic valuation (monetary measure) of ecosystem services in the United States. To fill this knowledge gap, we primarily used publicly available data to conduct an economic valuation of major ecosystem services associated with beef cattle production in the United States at both the national and state levels. We find that over 186 million ha were actively grazed by beef cattle ranches and farms in the United States in 2017. We estimate the economic value of this land use to be $17.5 billion for wildlife recreation, $3.8 billion for forage production, and $3.2 billion for other ecosystem services related to the conservation of biodiversity—a combined total of $24.5 billion. Ecosystem services from federal rangelands in 16 western states accounted for 35% of the total value. Ecosystem services per beef cow and per kilogram of retail beef were estimated to be $1,043.35 and $2.74, respectively. More studies like these are needed to inform decision-makers at the industry, land management, and federal levels to ensure that the conservation, improvement, and restoration of these ecosystem services are considered in future management and research efforts.

2 September 2021 in Agronomy Journal
Verified
Journal Article
Open access
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NANicolas Quintana Ashwell
Nicolas Quintana Ashwell
Saseendran AnapalliSaseendran Anapalli
Saseendran Anapalli
SRSrinivasa Pinnamaneni Rao
Srinivasa Pinnamaneni Rao
Gurpreet KaurGurpreet Kaur
Gurpreet Kaur
KRKrishna N. Reddy
Krishna N. Reddy
DFDaniel Fisher
Daniel Fisher
We assessed the potential profitability of twin‐row (TR) planting geometry as a water productivity‐enhancing practice and of skip‐row irrigation (SRI) as a water‐conserving practice in furrow‐irrigated cotton (Gossypium hirsutum L.) and soybean (Glycine max L.). Data from agronomic experiments carried on Dundee silt loam soils indicate that, on average, TR planting increases profitability by US$344 ha−1 for all‐row irrigated (ARI), $401 ha−1 for SRI, and $334 ha−1 for rainfed (RF) cotton. For soybean, the gains were $178 ha−1 for ARI irrigated, $178 ha−1 for SRI, and $121 ha−1 for RF. Converting from ARI to SRI irrigation can conserve 88 mm of irrigation water on average for cotton and 91 mm of irrigation water on average for soybean, while improving cotton profits by $55–113 ha−1. Soybean growers can expect a reduction in profits from SRI of ∼$11 ha−1. Incentive payment for soybean growers of ∼$0.132 mm−1 of saved water would compensate farmers for the expected losses of adopting SRI in the Delta of Mississippi.

4 August 2022 in Journal of Agricultural and Applied Economics
Verified
Journal Article
Open access
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NANicolas Quintana Ashwell
Nicolas Quintana Ashwell
DGDrew Gholson
Drew Gholson
We explore the economic merits of on-farm water storage with tailwater recovery systems to reduce aquifer depletion in a region with expanding irrigated acreage and substantial off-season precipitation. Gains are substantial on a broad scale and long planning horizon, including more than $4 billion in producer surplus, 5 million acre-feet of conserved groundwater, and land capitalization of $24 per acre. Sensitivity analyses provide insights with respect to the impact of discount rates, rainfed returns, return flows, and aquifer recharge rates. Results can inform stakeholders about the optimal allocation of funds directed at agricultural practice adoption and agricultural water investments.

17 July 2020 in Preprints.org
Verified
Preprint
Open access
PDF file
NANicolas Quintana Ashwell
Nicolas Quintana Ashwell
DGDrew Gholson
Drew Gholson
LKL Jason Krutz
L Jason Krutz
CHChristopher Henry
Christopher Henry
TCTrey Cooke
Trey Cooke
This article identifies irrigated row-crop farmer factors associated with the adoption of water conserving practices. The analysis is performed on data from a survey of irrigators in Mississippi. Regression results show that the number of irrigated acres, years of education, perception of a groundwater problem, and participation in conservation programs are positively associated with practice adoption; while number of years farming, growing rice, and pumping cost are negatively associated with adoption. However, not all factors are statistically significant for all practices. Survey results indicate that only a third of growers are aware of groundwater problems at the farm or state level; and this lack of awareness is related to whether farmers noticed a change in the depth-to-water distance in their irrigation wells. This evidence is consistent with a report to Congress from the Government Accountability Office (GAO) that recommends policies promoting the use of: (1) more efficient irrigation technology and practices and (2) precision agriculture technologies, such as soil moisture sensors and irrigation automation.