Relationship between yielding of pea (Pisum sativum L.) and meteorological factors at se-lected experimental stations in northern and eastern Poland
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| Authors: | Krystyna Grabowska1, Aneta Dymerska1, Barbara Banaszkiewicz1, Iwona Cymes1 1Department of Meteorology and Climatology, University of Warmia and Mazury, ul. Plac Łódzki 1, 10-724 Olsztyn |
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| Abstract : | Analysis of the effect of meteorological factors on the yielding of pea cv. Fidelia was conducted for the period of 1986-2005. The source material concerning the yields and the weather conditions originated from three experimental and meteorological stations situated in northern and eastern Poland. In the study the method of multiple regressions was applied, with the use of linear and quadratic functions with stepwise selection of variables, and the created regression equations were evaluated by means of the coefficient of determination R2, adjusted R2adjand the Cross Validation procedure – R2pred, as well as the F-Snedecor test. In the years of the study notable variation was observed in the weather factors in the individual stages of growth of pea, which had a significant effect on the times of their beginning, on the duration of the growth stages, and on the level of yields. The effect of the meteorological factors studied, i.e. solar radiation, air temperature and atmospheric precipitations on the yielding of the pea cultivar was related to the location of the station, stage of advancement of vegetation, and on the set of variables adopted for the analyses. |
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| Keywords : | meteorological factors, pea, yield, northern and eastern Poland | ||||||||
| Language : | English | ||||||||