Relationship between phenological and meteorological data as an important input into spring barley phenological model

0508754 - ÚVGZ 2020 RIV CZ eng J - Journal Article
Hájková, L. - Možný, M. - Kožnarová, V. - Bartošová, Lenka - Žalud, Zdeněk
Relationship between phenological and meteorological data as an important input into spring barley phenological model.
Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis. Roč. 67, č. 3 (2019), s. 679-688. ISSN 1211-8516. E-ISSN 2464-8310
R&D Projects: GA MŠMT(CZ) LO1415
Research Infrastructure: CzeCOS II - 90061
Institutional support: RVO:86652079
Keywords : BBCH code * Czech Republic * Phenophase * Precipitation * Spring barley
OECD category: Meteorology and atmospheric sciences
Method of publishing: Open access
https://acta.mendelu.cz/media/pdf/actaun_2019067030679.pdf

In this study, phenological and meteorological data have been used to interpret the relationship and influence of weather on current phenological stages of spring barley. The analyses were focused mainly on the stages closely connected with yield and grain filling period – tillering (BBCH 21), heading (BBCH 55) and yellow ripeness (BBCH 85). The aims of this paper were to: (1) calculate the trend in phenological development of spring barley from CHMI phenological stations in period 1991 – 2012 at different climatic zones, (2) evaluate the trend in number of days between phenological stages, (3) evaluate the sums of growing degree days above threshold above 5 °C (GDD) and precipitation totals to phenophase onset calculated since the phenological stage of emergence (BBCH 10), (4) calculate Pearson’s correlation coefficient (PCC) between phenological stage and meteorological parameter. The highest positive PCC was found between GDD and phenological stages of heading and yellow ripeness at Doksany and Strážnice stations situated in lowlands. The average value of GDD to phenological stage heading is within the range from 418.4 to 500.1 °C. The sums of precipitation totals fluctuate from 73.9 mm (Doksany station) to 123.2 mm (Chrastava station). The results of this study suggest that GDD can be a more suitable parameter for phenological model of spring barley development than precipitation total.
Permanent Link: http://hdl.handle.net/11104/0299581