Mid-Season P Fertilization Effects on Potatoes

Westermann, D.T. (1984) Mid-Season P Fertilization Effects on Potatoes. In: Proc. 35th Annual Northwest Fertilizer Conference. USA-WA-Pasco, 1984/07/18-19.

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Abstract

Final potato tuber yields are a function of tuber growth rates and
the duration of the tuber growth period, particularly for the
indeterminate potato varieties. Nutrient uptake should be continuous
until the start of normal plant maturation since the tubers function as
major nutrient sinks during their growth. Nutrient uptake rates less
than those required for tuber growth will cause the mobile nutrients to
be translocated from the other plant parts to the tubers, eventually
causing a premature canopy senescence. Final tuber yields will be
reduced if this senescence starts when the environmental conditions are
still favorable for growth. Nutrient uptake rates can slow or stop
during the maturation growth stage since tuber growth during this period
mainly comes from the translocation of dry matter and nutrients from the
vegetative portions of the plant to the tubers.

Item Type:	Conference or Workshop Item (Paper)
NWISRL Publication Number:	0545
Subjects:	Irrigated crops > Potato Mass Import - autoclassified (may be erroneous)
Depositing User:	Dan Stieneke
Date Deposited:	20 Nov 2010 21:57
Last Modified:	19 Jan 2017 18:17
Item ID:	1036
URI:	https://eprints.nwisrl.ars.usda.gov/id/eprint/1036