Fact Sheet #15 – July 2004
A user-friendly decision support aid to calculate potential yield and nitrogen requirements of cereals and canola
Victor Sadras, and Jeff Baldock, CSIRO Land and Water, Adelaide
Grain yield is constrained by a combination of factors such as inadequate nutrition, disease, subsoil compaction and chemical constraints in the low rainfall Mallee. While water availability is an obvious constraint for grain production, shortage of nitrogen often co-limits grain yield, as Mallee soils can provide a limited amount of nitrogen to crops, and fertiliser rates are usually low.
The Mallee Calculator is a simple spreadsheet model tailored to Mallee conditions. It was devised to help farmers in their estimates of potential yield and nitrogen fertiliser requirements of cereals and canola.