Subtopic: Calculation of performance parameters – field capacity, efficiency, performance index, application rate and losses
Question Statement:
Which of the following operational and management factors directly contribute to a reduction in the field efficiency of a tractor-implement system?
Options:
(A) Time spent turning at headlands and maneuvering around obstacles
(B) Time lost during seed and fertilizer hopper refilling in seeding operations
(C) Overlapping between adjacent swaths to avoid unworked strips
(D) Increasing the length of field runs while maintaining constant implement width
Answer Key:
A, B, C
Step-by-Step Solution & Explanation
- **A is correct:** Non-productive turning time at headlands directly reduces effective working time.
- **B is correct:** Idle stops for refilling inputs or emptying grain tanks are field interruptions reducing efficiency.
- **C is correct:** Operator overlap reduces the actual swath width below rated width, reducing effective field capacity and efficiency.
- **D is incorrect:** Increasing the length of field runs REDUCES the number of turns per hectare, thereby INCREASING field efficiency.