@article{Gugała:201557,
      recid = {201557},
      author = {Gugała, Marek and Zarzecka, Krystyna and Sikorska, Anna},
      title = {Porównanie Opłacalności Produkcji Ziemniaka Jadalnego w  Dwóch Kolejnych Latach Uprawy},
      journal = {Roczniki (Annals)},
      address = {2014},
      number = {1230-2016-99669},
      year = {2014},
      abstract = {The study was based on data derived from the farm  specializing in the production of edible potato. The aim
of  the study was to conduct an economic analysis of potato  production and presentation of profitability in the
next  two growing seasons. Marketable yield of potato tubers  stood in 2012 at 247.8 dt/ha in 2013 amounted
to 265.4  dt/ha. Revenue in the studied period was 9907.60 and  27956.30 PLN per 1 ha, and a large variation
in income was  dictated by the price obtained in different years of study  per unit of production. The largest
share in the structure  of costs accounted for operating costs of machinery and  human labor 42.7%, the cost of
seed 33.2 and 35.0%, then  the cost of fertilizers 15.0 and 15.7% and plant protection  products 7.3 and 8.4%.},
      url = {http://ageconsearch.umn.edu/record/201557},
      doi = {https://doi.org/10.22004/ag.econ.201557},
}