SEASON START DATES:
- By default, the model simulation starts November 1 of the previous year
- If a manure or N application is made before November 1 but after September 1 of the previous year, the simulation will start on the manure or N application date
- Manure applied or sod terminated before September 1 of the previous year will be counted as a prior season application
CROP RULES:
- If the previous crop was Sod, Grass Hay, Alfalfa, or Mixed Legume Hay, then the corresponding 'Termination Date,' 'Legume Percent' and 'Termination Method' must be defined for that forage-sod crop
- A forage-sod termination date can be specified from the current or prior 2 seasons
- If a sod date is specified for any time this season, then the previous crop has to be listed as sod
MANURE RULES:
- Manure applied later than September 1 of the prior year is considered part of the current season N management
- Up to 3 manure applications can be specified for the current season
- For applications before September 1 of the prior fall, you can only choose Incorporated or Left on Soil Surface as Incorporation Method; applications for the current season have more specific incorporation options available
- If you edit an existing application, the date range is restricted to the calendar year in which the manure application was originally entered
- Historical manure applications can be modeled going back 2 calendar years. (For example, during the 2023 growing season, manure applications on or after January 1, 2021 will be modeled)
NITROGEN RULES:
- One starter application is allowed
- Any number of non-starter applications are allowed