K A Hertel
NSW Department of Primary Industry
PMB 19, Trangie NSW 2823
Linseed (Linum usitatissium) is a profitable oilseed crop recognised for its role within a rotation for managing cereal crop diseases and pests such as the economically important root lesion nematode species. Consultation with growers and agronomists in northern NSW identified a range of views regarding the ideal sowing window, and a significant knowledge gap of available linseed varieties. A linseed phenology experiment was conducted in 2015 to evaluate the effect of sowing date (SD) on the phenology and yield components of four linseed varieties sown at five SDs (17 April, 8 May, 28 May, 22 June, 13 July). In general, as SD was delayed, the length of key phases such as start of flowering were reduced, plant height and height of lowest capsules decreased and thousand seed weight (TSW) declined. The results show the temperature-driven response of growth and development of four varieties, providing baseline data that could be utilised in crop growth simulations of variable climate scenarios for regional adaptation.