Articles
INFLUENCE OF CLIMATE CHANGE ON BERRY CROP GROWING IN LATVIA
Article number
838_5
Pages
45 – 51
Language
English
Abstract
Climatic data of 1960 to 2008 from the Pure Meteorological station and phenological data – bud break, beginning of flowering, and harvesting times – from the Pure Horticultural Research Centre, central-west part of Latvia, were used in this study.
Average year temperature rise in this period was about 2°C, but during winter temperature increased about 3°C. The highest rises were in January (4.7°C), February (3.2°C), March (3.5°C), and April (2.9°C), as well as in summer months July (3.1°C) and August (2.6°C). At the same time, increase in June (0.6°C) and autumn, especially October (0.2°C) was quite small.
Temperature rise in winter advanced bud break for 22 to 25 days and rise in April advanced flowering for nine to 16 days, depending on cultivar.
Average harvesting date did not change in the period studied.
Observed changes challenge berry production in Latvia: damage by late winter frosts after break of dormancy in warm January, especially for low-chill cultivars; reduced bud break due to non-sufficient chill after warm winters for high-chill cultivars; spread of pests and diseases due to increased temperatures and rainfall; increased risk of spring frost damage because of earlier flowering.
Average year temperature rise in this period was about 2°C, but during winter temperature increased about 3°C. The highest rises were in January (4.7°C), February (3.2°C), March (3.5°C), and April (2.9°C), as well as in summer months July (3.1°C) and August (2.6°C). At the same time, increase in June (0.6°C) and autumn, especially October (0.2°C) was quite small.
Temperature rise in winter advanced bud break for 22 to 25 days and rise in April advanced flowering for nine to 16 days, depending on cultivar.
Average harvesting date did not change in the period studied.
Observed changes challenge berry production in Latvia: damage by late winter frosts after break of dormancy in warm January, especially for low-chill cultivars; reduced bud break due to non-sufficient chill after warm winters for high-chill cultivars; spread of pests and diseases due to increased temperatures and rainfall; increased risk of spring frost damage because of earlier flowering.
Authors
K. Kampuss, S. Strautina, V. Laugale
Keywords
blackcurrants, Ribes, phenology, raspberries, winter hardiness
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