Usage possibilities of standard climatic characteristics for agrometeorological purposes

Abstract

This paper deals with the creation of 'optimal' weather model for the cultivation of rapeseed (Brassica napus L. var. napus). The starting point was parameterisation of negative meteorological conditions influencing growth, development and yield. We have processed, with the aid of standard climatologic characteristics of the semi-quantitative three-level evaluations, more than fifteen growing seasons with emphasis on unfavourable and high-risk meteorological factors (dryness or wetness during sowing, warm autumn, cold winter, high number of days with strong frost, low number of days with snow-cover, high number of days with precipitation during flowering). The result is a simple graphical model enabling us to express the accumulation of the effects of negative factors during the vegetation period.