Geographia Polonica (1999) vol. 72, iss. 2
Do climate changes increase the threat to crops by pathogens, weeds and pests?
Geographia Polonica (1999) vol. 72, iss. 2, pp. 99-110 | 
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Abstract
Several countries including Poland are evaluating possible scenarios of climate change and their effect on agriculture, which include aspects of plant protection. Two apprai-sals of the consequences of climate change for Polish agriculture consider four possible scenarios based on GISS and GFDL models. The National Study of Climate Change considers that changes will affect about 60% of the country and that their consequences will be relatively great due to changes of the water balance in soils.Possible impacts of global climate change on the occurrence, distribution and economic significance of the pests, pathogens and weeds on various continents and in Poland are discussed.
Keywords: Climate change, global warming, plant protection, greenhouse effect, pests, weeds, pathogens.
, Institute of Plant Protection, Miczurina 20, 60-318 Poznań, Poland