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ARS Home » Midwest Area » Columbia, Missouri » Cropping Systems and Water Quality Research » Research » Publications at this Location » Publication #410028
Research Project: Innovative Cropping System Solutions for Sustainable Production on Spatially Variable Landscapes

Location: Cropping Systems and Water Quality Research

Title: Struvite as a phosphorus source in potato

Author
item MARTINI, MADISON - Brigham Young University
item HANSEN, NEIL - Brigham Young University
item HOPKINS, AUSTIN - Colorado State University
item Ransom, Curtis
item LEMONTE, JOSHUA - Brigham Young University
item FLINT, ELISA - Utah State University
item WOOD, RACHEL - Brigham Young University
item HOPKINS, BRYAN - Brigham Young University

Submitted to: ASA-CSSA-SSSA Annual Meeting Abstracts
Publication Type: Abstract Only
Publication Acceptance Date: 11/1/2023
Publication Date: 11/1/2023
Citation: Martini, M.E., Hansen, N.C., Hopkins, A.P., Ransom, C.J., Lemonte, J.J., Flint, E.A., Wood, R.L., Hopkins, B.G. 2023. Struvite as a phosphorus source in potato [abstract]. ASA-CSSA-SSSA International Annual Meeting, October 29-November 1, 2023, St. Louis, Missouri. Paper No. 150354 Available: https://scisoc.confex.com/scisoc/2023am/meetingapp.cgi/Paper/150354

Interpretive Summary:

Technical Abstract: Potato crops require higher phosphorus (P) fertilizer than most other crops. P fertilizer manufacture and use is an environmental concern. Struvite is a recycled waste stream product that is a promising alternative P fertilizer source. Crystal Green (CG) struvite was applied to potato alone or in combination with low (<50% CG) or high (50% CG) blends of monoammonium phosphate (MAP) and compared to MAP alone and an untreated control in 13 field studies with calcareous soils low in available P. Orthogonal comparisons show that most sites were responsive, with P fertilization resulting in increased petiole P concentration, yields, tuber size, and specific gravity. The struvite treatments mostly had higher petiole P, yields of U.S. No. 1, marketable, and total categories contrasted to MAP alone, although there were no differences for tuber size or specific gravity. Struvite, either alone or in combination with MAP, was able to match or exceed the benefits of MAP applied to potato grown on calcareous, low P soils. These results, compared with what is known about environmental sustainability, suggest that struvite is an alternative to traditional P fertilizer for potato production.