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Agronomy QUESTION #2067
Question 1
In an additive intercropping system, the total plant population of each component crop compared to its sole crop population is:
  • Reduced by 50% for each component crop
  • Maintained at the full sole crop density for each component — extra land area is effectively 'added' to accommodate both crops, unlike replacement series where populations are reduced✔️
  • Determined only by the LER value of the previous season
  • Equalized between the two component crops regardless of their sole crop densities
Correct Answer Explanation
In additive intercropping, one crop (main crop) is maintained at its full sole crop density and the intercrop (sub-crop) is added into the existing arrangement — no reduction in either component's population relative to sole cropping. This contrasts with replacement (substitutive) intercropping, where populations are proportionally reduced. Additive systems maximize total productivity.