Abstract:
The experiences were made in 2002-2005 period within Iassy
University of Agricultural Sciences and Veterinary Medicine Farm, on a
cambic chernozem. Tillage treatments were plough to 20 cm, plough to 30
cm, chisel and disc harrow applied to wheat in to been/ wheat/ maize
rotation, with two different levels of fertilisation. In this paper we present the
effect of tillage system on energetic balance. Energetic results were greatly
influenced by methods of tillage management and level of fertilization. In all
crops it has been observed that the energetic expense increasing in the same
time with increasing of soil mobilization and fertilization doses. The increase
of nitrogen doses determinate bigger energetic expense than plow depth, this
being showed by high values of indirect active energy. The energy produced
was superior with every system which means the more intense mobilization of
the soil and the quantity of fertilization increase. Energetic balance sheet and
coefficient of efficiency had bigger values in the plowing variants than in the
variants worked without furrow turn but the indices progressed contrarily
with fertilizer doses used.
