Abstract:
The interest for soy culture grow up in the last time as a result of
feverish seeking on world plan of products which cover the deficit of protein
from animal and human food. The quick progress registered into the domain
of complex agricultural machines construction, in fighting against herb and
crops fertilization, rise new problems, which needs a continuous approach of
soil work methods to obtain a high economical and agro-technical efficacy.
The work proposes itself to make an analysis of some variants of soil work at
soy culture for grain, within the condition of SCDA Secuieni – Neamt. The
experience was stationary for a crop rotation of three years (soy – wheat –
corn) and present the data obtained at soy culture during the period 2005 –
2007. The basis works was made with the equipment composed from tractor
U650 and carried plough PP3x30 with Cizel equipped with rigid devices
MC-2,5 and harrow with disks GD3,2 + LN. The preparing works for
germinal bed have been composed from two works with harrow with disks
and the other works was in accordance with the technology proper to zone
culture. The matters followed were: the production of grain (kg/ha),
consumption of fuel (l/ha, l/t of product), some physical qualities of soil
(apparent density, penetration resistance, spare of water from soil) the
degree of herb spreading and their connection with the productions obtained
within climatic condition from experimental period. The production obtained
had a great variability, 1093 – 3633 kg/ha and were directly correlated with
soil works effectuated and influenced by the existing environment conditions.
After the average of period 2005 – 2007 the choice of some unfit devices for
effectuation of soil basis works caused production decreases up to 863kg/ha
(30,5%). These damages were bigger (1239kg/ha) representing 37% in the
condition of year 2007, extremely droughty, underlining the necessity of
improvement of soil works system also in accordance with the existing
conditions from the culture year.
