Abstract:
Temporary grassland on which graminaceous and leguminous was
sowing, in rare cases maintain the floristically composition proportion
between species previous fixed. Starting in the second year, leguminous are
reduced until disappearance because the graminaceous exercised a powerful
competition. Through separate graminaceous and leguminous sown in bands
was obtained bigger productions of 4-5 t/ha dry substance on three years
average. A better behavior was notice at mixtures in which were introduced
Lotus corniculatus because of the bigger vivacity. Mixtures with Trifolim
pratense give small productions in average because this leguminous was
disappearing in the third year. These mixtures are appropriate only for a sort
period of exploitation. The band width has an important contribution to yield
increase. When the proportion between grass and legumes bands was 75/25
%, the average dry matter yield was 4,59 t/ha. The production was grow up
to 4,87 t/ha if the bands have equal widths, and to 5,13 t/ha, when the
legumes band width was thrice bigger than grass band. Under floristically
aspect, temporary grasslands sowed in bends was composed by 60-70 %
graminaceous and 30-40% leguminous, if the graminaceous bends width was
bigger, and 20-30% graminaceous and 70-80 % leguminous if the
graminaceous bends width was smaller.The ratio between grass and legumes
was balanced when the band width was equal.Results proved that by separate
sowing of components is getting forage much more reached in legumes then
by sowing mixture of seeds. Mixture between grass and legumes is well
realized along with plants manipulation for drying.
