Agronomy Science, przyrodniczy lublin, czasopisma up, czasopisma uniwersytet przyrodniczy lublin
The study conducted in 2018-2020 aimed to determine the effect of irrigation and varied organic fertilization on potato yield, structure and chemical composition of tubers in an organic production system. Supplemental irrigation was carried out using a drip system. The fertilizer facilities were: Humac Agro; manure; manure + Humac Agro; vermicompost; vermicompost + Humac Agro; Fertil CN; Fertil CN + Humac Agro. Fertil CN applied alone and together with Humac Agro had the highest yield-forming efficiency; the average increase in total tuber yield in these fertilizer variants was 15.0 t ha-1 (87.2%), and in marketable yield by 15.8 t ha-1 (139.8%). Irrigation had a favorable effect on the accumulation of total and marketable tuber yield, the number of tubers set and their average weight, as well as their protein content. The irrigation water use efficiency (IWUE) index was in a wide range from 24.5 to 123.8 kg mm-1 depending on the fertilizer variant and the year of the study.
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