Crops with similar N status and canopy cover can be grouped together.
Table 1: Grouping Options for grains.
|Barley (spring)||Spring cereal|
|Oats (spring)||Spring cereal|
|Wheat (spring)||Spring cereal|
|Wheat (autumn)||Autumn cereal|
|Oats (autumn)||Autumn cereal|
|Maize (short, medium and long)||Maize||The only difference between these maize’s is the duration of their growth differs by about 2 months from short to long. If this loss of precision can be tolerated then a medium maize could be used to represent them all.|