Abstract:
The agrotehnological measures which have a major negative impact
on the planting material rated capacity are the following: on the first place is
situated the planting of the potato 30 days later, followed by stems damaging
after 20 days from the warning.
From quantity point of view the later planting and the vegetation
interruption had a negative effect on the planting material rated capacity at
both cultivars (Astral and Rapsodia). The diminishing of the planting
material rated capacity, as a consequence of the vegetation interruption was
significantly amplified when the planting activity was accomplished earlier
both in Suceava and Lucina at the cultivars Rapsodia and Astral.
In comparison with Suceava, in Lucina was registered a significant
grows of the tuber yields used like planting material (13,3 q/ha), representing
a significant increase of the yield with 9%. The quantitative estimation of the
triple interactions (cultivar –planting time - stage of the vegetation
interruption) suggested that the yields diminishing are caused by the later
planting being dependent by the stage of the vegetation interruption too. If in
Suceava those two cultivars reacted in a similar manner, in Lucina the
postpone of the vegetation interruption with 20 days, attenuated the limitative
effect of the planting delay only at the Astral cultivar.
