Abstract:
In this paper we studied thermic needs for improvement of sowing –
sprouting period at ten autochthonous maize hybrids.
We studied the duration in days for maize germinating and the sum of
effectives temperatures for this period and the necessary of heat for each
hybrid for total sprouting and the duration of this stage.
The result obtained showing us the differences between hybrids in
point of studied aspect and the importance of temperature for maize
sprouting. Thus, the sum of use degrees for the whole sowing sprouting
period was on an average between 80.8 and 96.30C. The hybrids from
Fundulea group necessitated bigger quantity of heat for sprouting then
hybrids from Turda group in all experimental years. For example in 2003
year the difference between both precocity group was 17.80C (the sum of
effectives temperatures), in 2005 this difference was 12.70C and in 2006
14.10C.
The sum of effectives temperatures showed relative close values in 3
experimental years but this one was accumulated in a different number of
days from year to year and from one hybrid to other.
Results obtained by us are similar to other results from literature with
reference to this theme. Data obtained by us can be taken like characteristic
of two types of hybrids not only for Targoviste area but for the whole north
zone from Romanian Plain.
