2.4. The influence of rotation and fertilization on the profit rate at wheat crop
The analysis of the influence of the rotation duration on the profit rate at wheat crop reveals that, for a N0P0
fertilization, the increase in the rotation duration led to an increase in the profit rate varying from -6.4% for
monoculture to 47.3% for the four-year rotation.
The fertilization with 100 kg N/ha resulted in a profit rate that varied from 22.7% in monoculture to 64.2% in the
four-year rotation. The increase in the rotation duration led to a very significant increase in the profit rate compared
to that of monoculture.
When comparing the figures of the profit rate resulted for the same rotation duration under fertilization with
100 kg nitrogen/ha, an increase in the profit rate varying from 29.1% for monoculture to 28.4% for the two-year
rotation can be seen; this increase is very significant.