Effects of tuber size and date of stem cutting on yield and yield components of Agria potato variety in East Azerbaijan

Abstract

The aim of this study was to evaluate and select the desirable tuber size and the date of stem cutting on Agria potato
variety in semi-cold temperature condition of east Azerbaijan province in Iran. As regard of qualitative factors
(Bacterial and fungal infection) there were significant differences between treatments. The experimental results
indicated that difference between treatments with evaluation of quantitative factors, a1b2 treatments (Whole tuber,
with the stem cut off, 20 days before harvesting) and a1b3 (The whole tuber, with the stem cut off, 10 days before
harvesting) were in the class A, but a1b2 treatment in study of quantitative factors, had less fungal and bacterial
infection under semi-cold temperature condition of Tabriz and can be introduced to Azerbaijan province and similar
areas.