Original paper

• Influence of Seed Treatments and Foliar Insecticides Used Against Oscinella frit L. in Maize on the Population of Thrips

  Paweł K. Bereś, Dariusz Górski, Halina Kucharczyk

  3-16

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• The Effect of Herbicides on the Protein Content in Tubers of Edible Potato Cultivars

  Marek Gugała, Krystyna Zarzecka, Anna Sikorska

  17-23

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• The Effect of Tillage Systems and Weed Control on the Yield of Yellow Lupine ( Lupinus luteus L.)

  Marek Gugała, Krystyna Zarzecka, Anna Sikorska, Krzysztof Kapela

  25-33

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• Influence of Sowing Period and Fertilization on Yield and Quality of Seeds of Nigella Damascena and Nigella Sativa

  Dijana Horvat, Marija Vukobratović, Krunoslav Karalić, Vesna Židovec

  35-43

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• Economic Indicators and Effectiveness of Chemical Control of Leaf Beetle Larvae and Diseases in Spring Wheat in Podkarpacie Voivodeship Poland

  Zdzisław Kaniuczak, Łukasz Siekaniec

  45-54

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