Original scientific paper
Generating cost price for crop residues
2019, 20 (1) p. 542-555
Considering growing interest and potential for biomass energy production as an alternative to imported oil and as a mode of reducing environment pollution, there is a demand for calculating the economic justification of using crop residues for increasing income. This article suggests a way of generating cost price for baled corn stover and baled wheat straw. The cost price of baled crop residues is the sum of the cost of removed nutrients and the cost of machine and labor work required for balling and operations of moving and settling the bales on the parcel. For the purposes of calculation, a 130 hp tractor with round baler for 250 kg bales and a 75 hp tractor with a front loader were used. Based on the results, it was concluded that the value of harvested residues based on nutrients (N, P2O5 and K2O) is 110.47 HRK/t for corn stover and 73.65 HRK/t for wheat straw. The results showed that for corn stover and wheat straw, the cost of pressing (baling) is 86.25 HRK/t, while the cost of moving and settling the bales on the parcel is 34.69 HRK/t.