A potential decrease of the yields of cucumber in the field cultivation in Poland caused by precipitation deficiency
Robert Kalbarczyk
Abstract
The aim of the study was to determine a potential decrease in the yield of cucumber in the field cultivation of pickle cucumber varieties caused by precipitation deficiency and precipitation frequency and to describe time and spatial characteristics of precipitation deficiency in Poland. The strongest relationships between the total and marketable yields of pickle cucumber varieties in the optimum agrotechnical conditions and the precipitation deficiency were recorded during the period from the beginning to the end of cucumber harvesting. Deficiency in precipitation during the period of the largest requirement of cucumber for water can cause a decrease in cucumber yields usually by 3 to 12%, the largest in central-west Poland. Deficiency in precipitation during the period from the beginning to the end of cucumber harvesting occurred most frequently in central-west Poland (even every two years), whereas the least frequently it occurred in the southeast (once every ten years). Mean total precipitation in the critical period in Poland in the years 1965–2004 amounted to 100 mm and varied from 90 mm in the central-west of the country and in Mazovian and Szczecin Lowlands to 130 mm in the southeast. t.
Keywords:
cucumber, a decrease in the yield, deficiency in precipitationLicense
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