engleski

Weather characteristics impacts on yields of the spring crops in Croatia

Mean yields of the field crops in Croatia for the 1996-2003 period (t/ha) were in range from 3.86 to 6.14 (maize), 1.38 to 2.70 (soybean), 1.51 to 2.45 (sunflower) and 22.98 to 47.06 (sugar beet). Yield variations among years for the short period (for example, decade period) are mainly result of weather conditions, especially precipitation and temperature regime during growing season. In general, the lower yields of the spring crops in Croatia are in connection with water deficite and the higher air-temperatures during growing season, but for precise quantitfication of these influences the weather data is needed, including more weather bureaus and means of these data for the shorter period (for example, 5-day or 10-days instead monthly data only) as well. The last decade period is characterized by the higher fluctuation of precipitation and temperature regimes during the growing season of the spring crops and available data are mainly better examples for comparison. For example, by comparison two growing seasons (2000 and 2002, respectively), were found (means by four counties) of maize 3.93 and 6.15 t ha^-1, respectively. Precipitation in the 4-month period May-August (means of five weather bureaus) was 104 and 307 mm, for 2000 and 2002, respectively.

weather characteristics ; yield ; maize ; soybean ; sunflower ; sugar beet

nije evidentirano