Neco Model Questions Vol1 2018 Agricultural Science Question 3

Practice practical question 3 from the 2018 Neco Model Questions Vol1 Agricultural Science examination. This question covers Farm Tools, Weeding efficiency, Productivity calculation, Experimental error .

Neco Model Questions Vol1 2018 Agricultural Science Practical
Topics: Farm Tools Weeding efficiency Productivity calculation Experimental error
Question 3 NECO_MODEL_QUESTIONS_VOL1 • 2018 • AGRICULTURAL_SCIENCE • practical

A farmer wishes to compare the efficiency of two hand tools for weeding a uniform field. The tools are: 1. A traditional hand hoe. 2. A newly introduced ergonomic hand hoe. The farmer selects a 0.5 ha (5,000 m²) plot where the weed density is known to be 150 weeds per 100 m². For each tool, the farmer clears a 10 m × 10 m quadrat (100 m²) and records the time taken and the number of weeds removed. The recorded data are: | Tool | Time taken (minutes) | Weeds removed | |---------------------|----------------------|---------------| | Traditional hand hoe| 12 | 150 | | Ergonomic hand hoe | 9 | 150 | Using this information, answer the following questions:

Question Parts

( a )
Calculate the work output of each tool expressed as the number of weeds removed per minute.
( b )
Estimate the total time required to clear the whole 0.5 ha plot with each tool, assuming the weed density is uniform throughout the field.
( c )
Calculate the percentage time saved when the ergonomic hand hoe is used instead of the traditional hand hoe.
( d )
Identify two possible sources of error in this experiment and suggest one precaution for each to improve reliability.

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About This Question

This is Neco Model Questions Vol1 2018 Agricultural Science Question 3. It is one of the practical questions from the 2018 Neco Model Questions Vol1 Agricultural Science examination.

The question covers Farm Tools, Weeding efficiency, Productivity calculation, Experimental error .

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