Erratum to: Am. J. Potato Res.

DOI 10.1007/s12230-016-9510-z

The second author's name has to be changed as follows: Young Ik Jin → Yong Ik Jin.

In Fig. 2, the symbol of N 16 days has to be changed from -■- to -◆-. The correct Fig. 2 is printed here.

Fig. 2
figure 1

Variations of each nutrient (NO3 , PO4 3−, SO4 2−, K+, Ca2+, and Mg2+) with periods of reduced nitrogen supply. Plants were grown under reduced nitrogen supply for 4, 8, and 16 days and compared with control plants which were grown under a constant supply of nitrogen. Arrows indicate the date when the reduced nitrogen solution is replaced with the control solution