The graph below shows the effects of different brands of fertilizer on bean plant growth. Write a report for a university tutor describing the information shown in the diagrams below. The effect of fertilizer on Bean Plant Growth
Sample Response
The illustration gives data on the effects of five different fertilizers on the growth of bean plants. As can be seen from the given diagram, Granny’s Bloomers and K Mark fertilizers help grow the bean plant more than other fertilizer brands. The column graph indicates that Granny’s Bloomers is the most effective compost as it helps grow the bean plant the highest, which is 28 centimeters. The average height of bean plants is 22 cm when K Mark fertilizer is applied. The growth of bean plants from Job’s House Plant Spikers fertilizer is about 16 cm on an average. Interestingly, bean plants’ height goes as high as 12 cm without any fertilizer being used which is almost double that the height bean plants gain from Miracle Gro fertilizer.
In summary, in terms of the efficiency on bean plants’ growth, Granny’s Bloomers is the best fertilizer while Miracle Gro is so far the worst fertilizer. Natural growth of bean plants is higher than the effects of Miracle Gro but less than the growth of bean plants with the utilization of Job’s House Plant Spikers fertilizer.
IELTS Writing Correction
- 1. Name the chart Original: illustration Suggested revision: bar chart Why it matters: The visual displays values with bars, so this term is more precise.
- 2. Count categories accurately Original: five different fertilizers Suggested revision: four fertilizer brands and no fertilizer Why it matters: One of the five categories is the untreated control rather than a fertilizer.
- 3. Fix comparison form Original: help grow the bean plant more than Suggested revision: produce greater bean-plant growth than Why it matters: The original verb pattern does not form a grammatical comparison.
- 4. Describe treatment precisely Original: The growth of bean plants from Suggested revision: The average height of plants treated with Why it matters: The chart reports plant height after treatment, not growth coming from a product.
- 5. Use chart term Original: compost Suggested revision: fertilizer Why it matters: The chart identifies the products as fertilizers, not composts.
- 6. Fix superlative structure Original: grow the bean plant the highest Suggested revision: produce the tallest bean plants Why it matters: Height should modify the plants rather than the verb grow.
- 7. Correct highest value Original: 28 centimeters Suggested revision: about 27 centimetres Why it matters: The Granny’s Bloomers bar reaches approximately 27 cm.
- 8. Use fixed phrase Original: on an average Suggested revision: on average Why it matters: The standard statistical phrase is on average without an article.
- 9. Correct control value Original: 12 cm Suggested revision: about 13 cm Why it matters: The untreated plants reached approximately 13 cm in the chart.
- 10. Separate relative clause Original: being used which Suggested revision: being used, which Why it matters: A comma is needed before this non-defining relative clause.
- 11. Fix comparison phrase Original: double that the height Suggested revision: double the height Why it matters: The word that is ungrammatical in this comparison.
- 12. Use natural collocation Original: efficiency on Suggested revision: effectiveness in promoting Why it matters: This phrase accurately describes how well each fertilizer supports growth.
Suggested Rewrites
- illustration bar chart
- five different fertilizers four fertilizer brands and no fertilizer
- help grow the bean plant more than produce greater bean-plant growth than
- The growth of bean plants from The average height of plants treated with
- compost fertilizer
- grow the bean plant the highest produce the tallest bean plants
Why this response received Band 7.0
The response's strongest feature is its clear ranking of treatments and coverage of every bar, including the useful comparison between natural growth, Miracle Gro, and Job's House Plant Spikers. Its main weakness is recurring imprecise wording and malformed comparison structures, while several figures are approximated one centimetre away from the chart; the highest priority is to report the five values consistently and express comparisons with clean, precise chart language.
IELTS Writing Criteria Scores
Detailed feedback by IELTS writing criterion after the annotated essay.
Task Achievement
The response gives a clear overall ranking and covers all five conditions, with the main figures and comparisons broadly matching the chart despite several one-centimetre approximations.
Report the bars as about 27, 15, 6, 22, and 13 cm, and identify the unfertilised plant as a control rather than a fifth fertilizer.
Coherence and Cohesion
The report moves logically from an introduction and overview to figures and a concluding comparison, though the final summary partly repeats the opening overview.
Place one concise overview after the introduction, then group the detailed comparisons from highest to lowest.
Lexical Resource
There is adequate range for describing averages and comparisons, but collocations such as 'grow the bean plant the highest' and 'efficiency on growth' are imprecise.
Use accurate chart language such as 'produced the tallest plants', 'average height', and 'effect on growth'.
Grammatical Range and Accuracy
A mix of simple and complex structures is used, but article, comparison, and clause errors recur, especially in the sentence comparing unfertilised plants with Miracle Gro.
Practise complete comparative structures such as 'nearly twice the height produced by Miracle Gro' and check articles around singular count nouns.
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