Evaluation of an almond phenology model under Australian conditions

D.S. Thomas, P.T. Hayman
Understanding the timing of crop development of almonds under Australian conditions is important for managing pests and disease, ensuring high levels of pollination, scheduling harvest and other operations. It is also useful for observations on how almonds are changing in a warming world. There is no continuous phenology model for almonds that explains the influence of environment on the development of all the major phenological stages. However, there are phenology models for discrete stages of almond development in Californian conditions. We combined these models of discrete stages into one model. The model was evaluated for almonds growing in Australia using available observations from Virginia, SA (1977-1984), Nagiloc, Vic (1979-1984), Walker Flat, SA (2015-2017), Loxton, SA (2015-2017), Lindsay Point, Vic (2015-2017), and Robinvale, Vic (2015-2017) and corresponding weather information from the Australian growing locations. The prediction of flowering dates was better than the ability to predict dates of hull split and fruit maturity, although the discrete nut maturation model performed well.
Thomas, D.S. and Hayman, P.T. (2018). Evaluation of an almond phenology model under Australian conditions. Acta Hortic. 1219, 125-132
DOI: 10.17660/ActaHortic.2018.1219.21
almond, phenology, model, flowering, hull split, maturity

Acta Horticulturae