Aiming at lowering the production costs, the number of applied agrotechnical treatments is limited. Giving up some of field treatments, besides undoubted advantages, may cause higher weed infestation of plantations. Applying glyphosate before germination is a cheap and effective method of their control in corn cultivation. The article presents the research results of alternative technology of corn field cultivation for grain with the use of non-selective herbicide in a farm, which carried out activity in conditions of Zachodniopomorskie Voivodeship. The objective of the research was to analyse economic profitability of corn production with a simplified technology of field cultivation with the use of total herbicide before germination. Calculations of direct production costs of corn for grains including costs of fuel and grease, material and raw materials, human labour and costs of exploitation of indispensable machines, agricultural tools were presented. Structures of exploitation costs of machines and agricultural tools per particular treatments were calculated. Based on the obtained results, one may state, that applying the analysed technology is profitable, which is proved by the obtained index of economic efficiency 2.06.