Use Case: Crop Rotation

Summary

  • Scope: Crop Rotation
  • Level: User Goal
  • Actors: App User, Plant A, Plant B
  • Brief: The user gets information based on earlier or later plants for each location.
  • Assignee: Lukas

Scenarios

  • Precondition:
    • The user has opened the app and sees either Heatmap or Relation Layer.
    • A plant A has been on the same spot in the past as plant B is now.
    • This plant A has a removal date before the adding date of plant B (remove_date of A < add_date of B).
    • There is a positive or negative crop rotation effect between plant A and B, which can last from half a year to a predefined number of years.
  • Heatmap:
    • Nothing, i.e., transparent, is shown if no plant has been at that spot before within the time frames
    • A positive effect is shown green on this spot before plant B is planted.
    • A weak negative effect (within max in the relation table) is shown orange on this spot before plant B is planted.
    • A strong negative effect (within min in the relation table) is shown red on this spot before plant B is planted.
  • Alternative scenario:
    • Without data or relation for A or B, nothing happens for the user and no additional information is provided.
  • Error scenario:
  • Postcondition:
  • Linked Use Cases:
  • Notes:

Out of Scope

  • Relation Layer
    • The relation layer shows an icon with text describing the specific crop rotation effect between plant A and B, e.g.:
    • "Strong negative crop rotation effect: Cabbage shouldn't be placed within the same year on the same spot."
    • "Nachteilige Fruchtfolge: Kohl braucht ein Jahr Anbaupause bevor wieder Kohl gepflanzt werden soll."
  • Pavlo suggests:

    It would be even better to group crops based on certain parameters (e.g. nitrogen provisioning, nitrogen demand, strength of a biocidal effect on pests, susceptibility to a certain pests). And to establish temporal relationships between these groups. Of course, the sequence in each crop pair should be checked to see if it either makes sense biologically (e.g. planting nitrogen fixing crop or insecticidal crop both before and after nitrogen demanding or a pest/disease susceptible crop makes sense.)