The field experiment was conducted in the years 2006–2008 at Plant Breeding and Acclimatization Institute, Division Jadwisin on the light and acid soil. The aim of the research was to compare tubers yield, their structure and some quality elements of tubers (content of nitrates and starch, percentage of de-formations, green tubers, common scab infection) different fertilization doses of solid and liquid nitrogen form (fertigation) applied to the soil. The objects were divided on: irrigated and non irrigated. Drip irrigation method was applied in this experiment. The nitrogen dose in fertigation form was established by using com-puter program DSS (Decision Support System). The nitrogen in fertigation form was applied in following doses: year of 2006 – 57,7 kg•ha-1, year of 2007 – 31,7 kg•ha-1, year of 2008 – 39,7 kg•ha-1. The doses of water (year of 2006 – 110,3 mm, year of 2007 – 20,0 mm, year of 2008 – 68,9 mm) and dates of their application were established by using tensjometer. The control was object without fertiliza-tion of NPK and without irrigation. The significant highest yield of tubers was obtained on the irrigated object where dose of 150 kg•ha-1N was applied. The yield of tubers on irrigated object ...
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 ...
