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Growing influence of anthropopressure and irregular changes in weather conditions necessitated conducting agroclimatic research into the assessment of plant cultivation risk caused by unfavourable meteorological conditions, including thermal conditions of air. The goal of the work was to assess the risk of pickling cucumber field cultivation in Poland caused by an unfavorable course of air temperature (T a ) in the period from sowing to the end of harvesting at the turn of the 20 th and 21 st centuries. To accomplish the goal, the study used data describing growth, development and crop productivity of cucumber in the years 1966-2005. Data was used concerning the described thermal conditions with the average T a in the whole growing season of the analysed plant. The data came from 28 experimental stations and 53 meteorological in Poland. The effect of T a in the growing season (sowing-end of harvesting) on the total and marketable yield of cucumber was evaluated. The study used curvilinear regression analysis with two variables. The highest risk of cucumber's cultivation caused by unfavorable thermal conditions of air was recorded in south-western, south-eastern, and also northern and north-eastern Poland. In these high risk areas reduction in the total yield oscillated between 15% and even over 21% below the multi-annual average. Reduction in the total yield occurred with frequency from 40% to above 80%. In south-western and south-eastern Poland, a reduction in the marketable yield amounted to maximally above 15%. A marketable yield reduction occurred with a frequency of from 50% to above 70%.Additional key words: air temperature; climate changes; growing season; reduction in yield. ResumenLas condiciones térmicas desfavorables del aire reducen la productividad de los cultivos de pepino encurtido (Cucumis sativus L.) en Polonia en el cambio de los siglos XX y XXI La creciente influencia de la acción humana y los irregulares cambios en las condiciones climáticas han hecho necesario llevar a cabo investigaciones agroclimáticas para evaluar el riesgo en el cultivo de plantas. El objetivo de este trabajo fue evaluar el riesgo en Polonia en el cultivo en campo de pepino, en el cambio de los siglos XX y XXI, causado por una evolución desfavorable de la temperatura del aire (T a ) en el período desde la siembra hasta el final de la cosecha. Se utilizaron los datos, obtenidos de 28 estaciones experimentales y 53 meteorológicas en Polonia, que describen el crecimiento, desarrollo y productividad de los cultivos de pepino en los años 1966-2005, relacionándolos con la T a media en todo el período vegetativo de la planta. Se evaluó el efecto de la T a en la temporada de cultivo (siembra-final de cosecha) sobre la producción total y comercial del pepino, utilizando un análisis de regresión curvilínea con dos variables. El mayor riesgo del cultivo de pepino debido a las desfavorables condiciones térmicas del aire se registró en el sur-oeste, sudeste y también norte y noreste de Polonia. En estas zonas de alto riesgo l...
Growing influence of anthropopressure and irregular changes in weather conditions necessitated conducting agroclimatic research into the assessment of plant cultivation risk caused by unfavourable meteorological conditions, including thermal conditions of air. The goal of the work was to assess the risk of pickling cucumber field cultivation in Poland caused by an unfavorable course of air temperature (T a ) in the period from sowing to the end of harvesting at the turn of the 20 th and 21 st centuries. To accomplish the goal, the study used data describing growth, development and crop productivity of cucumber in the years 1966-2005. Data was used concerning the described thermal conditions with the average T a in the whole growing season of the analysed plant. The data came from 28 experimental stations and 53 meteorological in Poland. The effect of T a in the growing season (sowing-end of harvesting) on the total and marketable yield of cucumber was evaluated. The study used curvilinear regression analysis with two variables. The highest risk of cucumber's cultivation caused by unfavorable thermal conditions of air was recorded in south-western, south-eastern, and also northern and north-eastern Poland. In these high risk areas reduction in the total yield oscillated between 15% and even over 21% below the multi-annual average. Reduction in the total yield occurred with frequency from 40% to above 80%. In south-western and south-eastern Poland, a reduction in the marketable yield amounted to maximally above 15%. A marketable yield reduction occurred with a frequency of from 50% to above 70%.Additional key words: air temperature; climate changes; growing season; reduction in yield. ResumenLas condiciones térmicas desfavorables del aire reducen la productividad de los cultivos de pepino encurtido (Cucumis sativus L.) en Polonia en el cambio de los siglos XX y XXI La creciente influencia de la acción humana y los irregulares cambios en las condiciones climáticas han hecho necesario llevar a cabo investigaciones agroclimáticas para evaluar el riesgo en el cultivo de plantas. El objetivo de este trabajo fue evaluar el riesgo en Polonia en el cultivo en campo de pepino, en el cambio de los siglos XX y XXI, causado por una evolución desfavorable de la temperatura del aire (T a ) en el período desde la siembra hasta el final de la cosecha. Se utilizaron los datos, obtenidos de 28 estaciones experimentales y 53 meteorológicas en Polonia, que describen el crecimiento, desarrollo y productividad de los cultivos de pepino en los años 1966-2005, relacionándolos con la T a media en todo el período vegetativo de la planta. Se evaluó el efecto de la T a en la temporada de cultivo (siembra-final de cosecha) sobre la producción total y comercial del pepino, utilizando un análisis de regresión curvilínea con dos variables. El mayor riesgo del cultivo de pepino debido a las desfavorables condiciones térmicas del aire se registró en el sur-oeste, sudeste y también norte y noreste de Polonia. En estas zonas de alto riesgo l...
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