Abstract:
The researches were accomplished during period 2002-2007 at
Agricultural Research Center of Pojorâta, Suceava county and were
developed in two stages. The first stage was during 2002-2004 and was
studied the rotation and fertilizers influence upon some annual and perennial
fodder plants. The studied factors were: A –rotation with five graduates, a1-
fodder beet - faba bean- fodder turnip; a2- faba bean – fodder beet – potato;
a3 – red clover – red clover – red clover; a4 – potato – fodder turnip – faba
bean a5 - fodder turnip – potato – fodder bee . B – agro fond with five
graduation: b1 – unfertilized; b2 – 100 N b3 – 150 N 90 P 2 O; b4 – 150 N
90 P2O5 90 K2O; b5 – 50 t/ha rother, annually applied. In the second stage
(2005-2007) was sowed on whole surface of the experiment from the first
stage a mixture formed by: Phleum pretense 60 % (Tirom) + Dactylis
glomerata 15 % (Gorom) + Festuca pratensis 25 % (Braşov) + Trifolium
repens 10 % (Ladino) + Lotus corniculatus 10 % (De Transilvania). It was
accomplished a fertilization with unique agro fond on 50 P2O5, 50 K2O
applied during autumn period and 100 N (50 N in spring time + 50 N after
first mowing). During experiment period it was studied the precursory plant
influence and the retentivity effects of the fertilizers upon the dry harvests of
the sowed pastures.
The temporary pasture achieved the biggest yields when was sowed
after rotation potato-fodder turnip- faba bean fertilized with 50 t/ha rother,
applied annually, on 96.7 q / ha dry substances, the yield increases being
very significant (11.2 q/ha s.u).
