2. ENVIRONMENTAL ChEMISTRy & TEChNOLOGy 2.1. Lectures

Chem. Listy, 102, s265–s1311 (2008) Environmental Chemistry & Technology
A 3 , namely 13.68 % and 12.99 % for B 4 . The increase of the
waste dose and nitrogen contribution generates an enhance of
the plant protein content.
Conclusions
Considering the obtained results, the two experimented
industrial waste can be used in certain doses as soil
amendment for low fertile acid soil, with or without nitrogen
addition.
Treating soil with different doses of waste, a buffering
effect was established, which rises the pH values from low
acid to low alkaline.
The presence of magnesium and calcium in the waste
composition increases the soil content, proportional with the
growth of the waste dose.
The enhance of the trace elements content in soil is
representative for iron, copper and zinc (waste A).
The experimental waste doses (waste A, waste B) had a
beneficial effect on grain germination improving the number
of risen oat plants by 23 % (waste A) and 30 % (waste B).
At harvest time, the size of green oat plants was taller by
8 cm (waste A) and 9 cm (waste B) comparative to the control
alternative with untreated soil. nitrogen additions increased
their size by 51 % (waste A) and by 53 % (waste B).
The fresh weights of the plants show a decrease proportional
with the increase of the waste doses (A, B) only for the
alternatives without nitrogen addition.
The dry matter values are increasing once with enhance
of dose for both waste in all alternatives without nitrogen
contribution. The addition of nitrogen decreases the dry matter
value at harvest time for all the alternatives comparative
to the control. The decrease of dry matter is more severe for
the alternatives treated with waste A.
Adding nitrogen, the protein content has increased and
became double given to the alternatives without nitrogen
contribution.
s486
This work has been partial supported by a CNCSIS
Grant-Type A of Romania.
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