U of Idaho and USDA-ARS Progress Report: Potassium management in irrigated potato systems of Southern Idaho

Tindall, T.A. and Westermann, D.T. and Stark, J.C. (1993) U of Idaho and USDA-ARS Progress Report: Potassium management in irrigated potato systems of Southern Idaho. pp. 149-154. In: Proc. Winter Commodity Schools. USA-ID, 1993/01/20-21.

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Abstract

An initial survey (Fig. 1) was completed for southern Idaho to correlate soil test K levels with % K
concentrations in potato petioles. Twenty-eight fields were sampled across the major production
areas of the state during potato bulking. A positive correlation (R = 0.66) was observed between
soil test K (stK) levels and petiole K concentrations. The K values ranged from 105 ppm stK to
almost 600 stK. Petiole K % ranged from 7.5% to 12%. The present Univ. of Idaho critical
value for Russet Burbank is set at about 7%. Unfortunately this value has not been completely
substantiated because of insufficient low stK sites.

Item Type:	Conference or Workshop Item (Paper)
NWISRL Publication Number:	0798
Additional Information:	Sponsored by the University of Idaho Cooperative Extension System
Subjects:	Irrigated crops > Potato Mass Import - autoclassified (may be erroneous)
Depositing User:	Dan Stieneke
Date Deposited:	20 Nov 2010 21:56
Last Modified:	23 Nov 2016 21:13
Item ID:	931
URI:	https://eprints.nwisrl.ars.usda.gov/id/eprint/931