Nitrogen uptake curve of Russett
Burbank potatoes grown in Paterson, WA. The
tuber yield was 563 cwt/acre [4].
Estimated N in vines and tubers at vine
kill. Data from a trial with Classic Russett
and Russett Norkotah in Tulelake. The
average total yield was 506 cwt/acre [7]. Nitrogen partitioning to
potato vines and tubers depends on
fertilization. In a well-fertilized crop
about 20-30% of the total N is found in the
vine. Under excessive fertilizer over half
of the total N may be in the vine, and under
deficient fertilization it can be as low as
10% [4,7].
Nitrogen removed with potato tubers. The overall average is weighted for the number of observations in each trial. More information can be found here [2].