Full flowering phenology of apple tree ( Malus domestica ) in Pūre orchard, Latvia from 1959 to 2019
2021
Abstract. The Pūre orchard is one of the oldest apple orchards
in the Baltic, where thousands of varieties of fruit trees from throughout
the world are grown and tested. Over time, a huge knowledge base has been
accumulated, but most of the observational data are stored in archives in
paper format. We have digitized a small part of the full flowering
phenological data of apple trees (Malus domestica) over the period of 1959 to 2019 for 17
varieties of apple trees, a significant step for horticulture and
agricultural economics in Latvia. Climate change has led to significant
changes in the phenology of apple trees as all varieties, autumn, summer and
winter, have begun to flower earlier: from 2002 to 2019, on average full
flowering was recorded to have taken place around 21 May, whereas for the
period 1959–1967 it occurred around 27–28 May. To develop better-quality phenological predictions and to take account of
the fragmentary nature of phenological data, in our study we assessed the
performance of three meteorological data sets – gridded observation data
from E-OBS, ERA5-Land reanalysis data and direct observations from a distant
meteorological station – in simple phenological degree-day models. In the
first approximation, the gridded E-OBS data set performs best in our
phenological model.
- Correction
- Source
- Cite
- Save
- Machine Reading By IdeaReader
19
References
0
Citations
NaN
KQI