Potassium considerations for southern Idaho soils

Westermann, D.T. and Tindall, T.A. (1997) Potassium considerations for southern Idaho soils. pp. 172-181. In: Tindall, Terry A. and Westermann, Dale (eds.) Proc. Western Nutrient Management Conf. USA-UT-Salt Lake City, 1997/03/06-07. Published for WNNC by Univ. of Idaho.


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Potato tuber yields of over 500 cwt/A are being achieved by many of Idaho's potato growers. At this production level, tubers can remove over 200 lbs K/A. A recent study (Westermann and Tindall, 1995) showed that many southern Idaho fields responded to a K fertilizer application when the soil test K concentration was less than 175 ppm K in top 12 inches of soil. That study also showed that the K fertilization rate necessary to achieve maximum yields at a given soil test K concentration was significantly higher than that presently recommended in the fertilizer guide for potatoes (McDole et at., 1987).

Item Type: Conference or Workshop Item (Paper)
NWISRL Publication Number: 0930
Subjects: Soil > Chemistry > Potassium
Mass Import - autoclassified (may be erroneous)
Depositing User: Dan Stieneke
Date Deposited: 20 Nov 2010 21:57
Last Modified: 22 Nov 2016 20:16
Item ID: 1081
URI: https://eprints.nwisrl.ars.usda.gov/id/eprint/1081

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