Volume 5
Issue 2
Agronomy
JOURNAL OF
POLISH
AGRICULTURAL
UNIVERSITIES
Available Online: http://www.ejpau.media.pl/volume5/issue2/agronomy/abs-04.html
REGIONALISATION OF SPRING TRITICALE IN POMERANIA IN TERMS OF THERMIC AND PRECIPITATION CONDITIONS
Bożena Michalska, Eliza Kalbarczyk
ABSTRACT
The paper discusses the relations between spring triticale grain yield and weather factors: mean air temperature, total precipitation and insolation in the north-west of Poland. Boundary values were determined for the weather factors such that caused the decrease in grain yield by at least 10% against the many-years yield average. On the basis of weather data from the years 1971-2000, climate indices of spring triticale crop yield were estimated, which in turn provided a basis for the valuation, in terms of scores, of thermic and precipitation conditions in the north-west Poland. Crop yield of spring triticale is markedly restrained by the mean temperature exceeding 16°C in the stalk-shooting – coming into ear period, as well as by precipitation below 20 mm over the same period, and by the mean air temperature above 18.5°C in the coming into ear – dough stage. The most beneficial climate conditions for growing spring triticale are found in the central part of Pobrzeże Słowińskie, an
Key words: spring triticale, weather factors, boundary values, regionalisation in Pomerania.