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Agronomy QUESTION #2071
Question 1
The 'turnaround period' in double or triple cropping systems refers to:
  • The time required for a combine harvester to complete one pass across the field
  • The period between harvest of one crop and establishment of the next, during which land preparation, seedbed preparation, and planting must be completed — minimizing this period is critical for maximizing annual productivity✔️
  • The time required for seeds to germinate after planting
  • The interval between two irrigation applications
Correct Answer Explanation
Turnaround period is the gap between crop seasons — harvesting one crop and establishing the next. In intensive multiple cropping systems (rice–wheat, maize–wheat), a long turnaround causes delayed planting, yield penalties from terminal heat stress or shortened growing season, and reduced annual productivity. Zero tillage and direct seeding dramatically reduce turnaround periods.