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Risk of field cultivation of pickling cucumber caused by unfavorable sunshine duration conditions Scientia Agricola
Kalbarczyk,Robert.
Solar energy, accessible to plants during sunshine from the sunrise to the sunset is of key importance in productivity of agrocenoses. The aim of the work was to determine risk of pickling cucumber cultivation caused by an unfavorable course of sunshine duration in Poland on the basis of a 40-year research period 1966-2005. The research into the subject was undertaken due to frequent occurrence of sunshine deficiency in Poland and its high temporal and spatial variability. Effect of solar conditions described by sunshine duration in the five development stages on the quantity of the total and marketable yield of cucumber with consideration of a linear trend of an independent variable was determined by means of multiple regression analysis. The accuracy of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Development; Growth; Reduction in yield; Solar conditions.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162011000300009
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Climatic signal in a radial growth of Canadian and Maximovich poplars in south-western Poland Scientia Agricola
Ziemiańska,Monika; Kalbarczyk,Robert; Chen,Ji-Ren; Dobrzańska,Joanna.
ABSTRACT: The main goal set by researchers in this article was to gather knowledge on the structure of the basic biometric features of tree-rings of two species of poplars, belonging to different sections of Aegeiros – Populus xcanadensis and Tacamahaca – Populus maximowiczii, and to define and understand the correlation between weather and annual increment. A supplementary objective of the article was to determine pointer years of species found in individual populations. Our research used the standard methodology applied in dendroclimatology. In the analysis of correlation of the tree species studied, stronger statistically significant relationships were obtained in terms of precipitation-increment compared to temperature-increment. The annual increment...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Populus xcanadensis; Populus maximowiczii; Dendroclimatology; Synchronisation of tree-ring widths; Pointer years.
Ano: 2020 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162020000501001
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