Summary:

The field experiment was conducted in the years 2010-2012 at Plant Breeding and Acclimatization Institute, Division Jadwisin on the light and acid soil. The aim of the research was to compare effect on tubers yield, their structure and some quality elements of tubers (content of nitrates, starch, vitamin C, dry matter and percentage of deformations, green tubers, common scab infection) different variants of lines drip irrigation between rows potato plants localization and conduct of irrigation with nitrogen fertigation. The drip irrigation was conducted of subsurface and drip lines situated on rows of plants (object of B), on surface and drip lines situated in each row space (object of C), every second row space and double irrigated dose of water (object of D). Mineral nitrogen on irrigated objects by broadcasting before of planting of 50 kg.ha-1 and by fertigation of 50 kg.ha-1 (5 treatments to 10 kg.ha-1) was applied to the soil. The control was object (A) without irrigated with nitrogen application in dose of 100 kg.ha-1 by broadcasting before planting. The doses of water and dates of their application were established by using tensjometer. When the lines situated by subsurface on rows and drip irrigation with nitrogen fertigation applied increasing about 14% of total and about 22% of commercial tubers yield of potato in compare to control was stated. The yield of tubers on the object with drip lines by subsurface on rows was not significant compare to object where the drip lines on surface each row space was situated. The drip irrigation with fertigation increasing about of 2-5% big tubers share in yield (diameter above of 6 cm) was caused. On the object with drip lines on rows situated smaller share of tubers with common scab infection than control objects and increase of starch and vitamin C content in tubers to compare other objects were observed.