Predicting Flowering of Apricot Cultivars Using Growing Degree Days
Само за регистроване кориснике
2012
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
Heat requirement for flowering in apricot cultivars was estimated from field data using Growing Degree Days method (GDD). Ten years of phenological and temperature data for 42 apricot cultivars of diverse geographical origin and different flowering time, grown in Belgrade region, were used to conduct the study. Base temperatures for different cultivars were obtained by the RMSE (the smallest root mean square error between the observed and predicted number of days) method. The base temperatures calculated by this method differed among cultivars from -2.8 to 0.2 degrees C. GDD was calculated from 1 January to the beginning of flowering using base temperatures obtained by RMSE method, the Null method (base temperature set to 0 degrees C for all cultivars) and Fixed Value method (base temperature set to -1 degrees C for all cultivars). The best agreement with observations in terms of mean absolute error (MAE) was attained by RMSE method (MAE=2.7 days). However, the Null method (MAE=3.2 day...s) and Fixed Value method (MAE=3.0 days) gave also very good results. Taking -1 degrees C for the base temperature (the mean value of all cultivars studied), the accumulated GDD for flowering varied from 332 (in 'Tyrinthos') to 425 (in 'Stella').
Кључне речи:
Prunus armeniaca / phenology / heat requirement / base temperature / RMSE methodИзвор:
Acta Horticulturae, 2012, 966, 87-92Финансирање / пројекти:
DOI: 10.17660/actahortic.2012.966.13
ISSN: 0567-7572
WoS: 000323829500013
Scopus: 2-s2.0-84872028635
Институција/група
Poljoprivredni fakultetTY - JOUR AU - Ruml, Mirjana AU - Milatović, Dragan AU - Vuković, Ana PY - 2012 UR - http://aspace.agrif.bg.ac.rs/handle/123456789/2789 AB - Heat requirement for flowering in apricot cultivars was estimated from field data using Growing Degree Days method (GDD). Ten years of phenological and temperature data for 42 apricot cultivars of diverse geographical origin and different flowering time, grown in Belgrade region, were used to conduct the study. Base temperatures for different cultivars were obtained by the RMSE (the smallest root mean square error between the observed and predicted number of days) method. The base temperatures calculated by this method differed among cultivars from -2.8 to 0.2 degrees C. GDD was calculated from 1 January to the beginning of flowering using base temperatures obtained by RMSE method, the Null method (base temperature set to 0 degrees C for all cultivars) and Fixed Value method (base temperature set to -1 degrees C for all cultivars). The best agreement with observations in terms of mean absolute error (MAE) was attained by RMSE method (MAE=2.7 days). However, the Null method (MAE=3.2 days) and Fixed Value method (MAE=3.0 days) gave also very good results. Taking -1 degrees C for the base temperature (the mean value of all cultivars studied), the accumulated GDD for flowering varied from 332 (in 'Tyrinthos') to 425 (in 'Stella'). T2 - Acta Horticulturae T1 - Predicting Flowering of Apricot Cultivars Using Growing Degree Days EP - 92 SP - 87 VL - 966 DO - 10.17660/actahortic.2012.966.13 ER -
@article{ author = "Ruml, Mirjana and Milatović, Dragan and Vuković, Ana", year = "2012", abstract = "Heat requirement for flowering in apricot cultivars was estimated from field data using Growing Degree Days method (GDD). Ten years of phenological and temperature data for 42 apricot cultivars of diverse geographical origin and different flowering time, grown in Belgrade region, were used to conduct the study. Base temperatures for different cultivars were obtained by the RMSE (the smallest root mean square error between the observed and predicted number of days) method. The base temperatures calculated by this method differed among cultivars from -2.8 to 0.2 degrees C. GDD was calculated from 1 January to the beginning of flowering using base temperatures obtained by RMSE method, the Null method (base temperature set to 0 degrees C for all cultivars) and Fixed Value method (base temperature set to -1 degrees C for all cultivars). The best agreement with observations in terms of mean absolute error (MAE) was attained by RMSE method (MAE=2.7 days). However, the Null method (MAE=3.2 days) and Fixed Value method (MAE=3.0 days) gave also very good results. Taking -1 degrees C for the base temperature (the mean value of all cultivars studied), the accumulated GDD for flowering varied from 332 (in 'Tyrinthos') to 425 (in 'Stella').", journal = "Acta Horticulturae", title = "Predicting Flowering of Apricot Cultivars Using Growing Degree Days", pages = "92-87", volume = "966", doi = "10.17660/actahortic.2012.966.13" }
Ruml, M., Milatović, D.,& Vuković, A.. (2012). Predicting Flowering of Apricot Cultivars Using Growing Degree Days. in Acta Horticulturae, 966, 87-92. https://doi.org/10.17660/actahortic.2012.966.13
Ruml M, Milatović D, Vuković A. Predicting Flowering of Apricot Cultivars Using Growing Degree Days. in Acta Horticulturae. 2012;966:87-92. doi:10.17660/actahortic.2012.966.13 .
Ruml, Mirjana, Milatović, Dragan, Vuković, Ana, "Predicting Flowering of Apricot Cultivars Using Growing Degree Days" in Acta Horticulturae, 966 (2012):87-92, https://doi.org/10.17660/actahortic.2012.966.13 . .