Research of efficiency of conventional production of mercantile corn was held on production parcels in agroecological conditions of Posavina in a period of vegetation in 2017. In order to define costs of crop management from the point of view of energy and production aspects, in certain stages of production of corn grain, energy consumption and utilization of the horsepower of the tractor was monitored. During working operations the maximum amount of fuel was spent for ploughing ( plough Leopard- L 30.3 VK aggregated with tractor Belarus 82.1 ) 26,4 l/ha, while the smallest amount was spent in chemical crop protection ( sprayer RAU aggregated with tractor Universal UTB 450 ) 2,7L/ha. Accordingly, efficiency in various operations of production varied within 10-20% span. In our experiment efficiency varied from 6,91% during fertilization to 23,33% in the process of ploughing, which is in this case within optimum limits. In direct input almost one third or 27,13% went for the basic tillage system ( 81,77 kWh/ha ) with a very high fuel usage of 23,33%. If we look at energy value of production of corn grains energy output will be 75243,20 MJ/ha with a ratio of 16,178 which is considered to be quite high, and productivity of 1,273 kg/MJ. In order to get the full picture of the above production of corn and energy outcome and not concentrating only on grain production, it is essential to include in energy analysis significant amounts of plant residues, that is maize biomass, which doubles the mentioned energy ratio to 31,846 and hence overall productivity of energy circulation in this production.
- ASAE (1999): Agricultural machinery management data. ASAE Standards D497.4. American Society of Agricultural Engineers, St. Joseph, Michigan, USA, 350-357.
- ASAE (1999): Agricultural machinery management. ASAE Standards EP496.2. American Society of Agricultural Engineers, St. Joseph, Michigan, USA, 344-349.
- Bowers, C. G. (1985): Southeastern tillage energy data and recommended reporting. Transactions of the ASAE 28, 731- 737.
- D. Filipovic, D. Košutic, S. Gospodaric, Z. (2005): Energy consumption in conventional tillage of powder-clay soil in Western Slavonia. AGRONOMIC BULLETIN 5/2005, pp 383 - 392.
- Dimitrijević A. (2007): Energy balance of salad production in protected area, University of Belgrade, Faculty of Agriculture, Master thesis.
- Hernanz, L. J., J. Ortiz-Canavate (1999): Energy saving in crop production. In: O. Kitani (Ed.) CIGR Handbook of Agricultural Engineering, Vol. 5. Energy and Biomass Engineering. ASAE, St. Joseph, Michigan, USA, 24-39.
- Ifet Šišić, Adnan Ćehajić, Sebila Rekanović (2013): Research of optimal solutions for the valorization of agricultural biomass for energy and other purposes. 9th International Scientific Conference on Production Engineering, development and modernization of production, RIM-2013, Budva pp 645-650.
- Köller, K. (2004): Soil Tillage. In: H. J. Matthies, F. Meier (Eds.) Yearbook Agricultural Engineering. VDMA Landtechnik, VDI-MEG, KTBL, Münster, Germany, 83-88.
- Malinović N, AnĊelković S, Meši M. (2010): Ecological and energy aspects of various tillage technologies. In. Proc. The fifth scientific expert assembly ‘InterRegioSci 2010’, 23-24. Novi Sad.
- Momirovic, N., Kovacevic, D., Brocic, Z., Radosevic, Z., (1998): Effect of conservation tillage practice on soil physical environment and yield of maize as a second crop. Proc. of Int. Conf. on Soil cond. and crop production, 2-5 Sept. Godelle, Hungarian ISTRO branch: 184-187, Hungary.
- Momirovic, N., Misovic, M., Brocic, Z., (1997): Effect of organic mulch application on the yield of potato seed crop. A. Horticulturae No.462, Vol.1:291-296. ISHS. Belgium.
- Oljaĉa, M., Oljaĉa, S., Kovaĉević, D., Radivojević, D., Gligorević, K., Pajić, M., Ralević, M., Mitrović, B., Radosavljević, U., (2009): Regulation, use and protection measures of agricultural land of the Municipality of Kosjerić. Agricultural technology, Year XXXIV, Number 4, pp 83-94. Beograd.
- Pellizzi, G., A. Guidobono-Cavalchini, M. Lazzari (1988): Energy savings in agricultural machinery and mechanization. Elsevier Applied Science, London-New York.
- Radovanović T., Rajić I. (1990): Domestic animal nutrition practicum, University of Kragujevac, Faculty of Agriculture, Ĉaĉak, 1990.
- Shrestha, D.S., G. Singh, G. Gebresenbet (2001): Optimising design parameters of a mouldboard plough. Journal of Agricultural Engineering Research 78, 377-389.
- Smith, L. A. (1993): Energy requirements for selected crop production implements. Soil and Tillage Research 25, 281- 299.
- Weise, G., E. H. Bourarach (1999): Tillage Machinery. In: B. A. Stout (Ed.) CIGR Handbook of Agricultural Engineering, Vol. 3. Plant Production Engineering. ASAE, St. Joseph, Michigan, USA, 184-217.
- Zrakić Magdalena, L. Hadelan, J. Prišenk, V. Levak, I. Grgić (2017): Tendencies in corn production in the world, Croatia and Slovenia. Bulletin of plant protection 6/2017. Cooperative Press, Zagreb, pp. 78 - 85.