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 graph shows how bean plant’s growth is affected when different fertilizers are used. It is evident that Granny’s Bloomers and K Mark fertilizer are two most effective composts in terms of bean plants growth while Miracle Gro is least effective. According to the column graph, bean plants grow as high as 13 centimetres without any fertilizer. Among the given composts, Granny’s Bloomers has the most significant effect on its growth which helps this plant grow to 27 cm on an average. The second most efficient fertilizer, K Mark, hike the growth to 22 cm which is 11 cm higher than the bean plants natural growth. When Job’s House Plant Spikers is utilised, the bean plants develop to 15 cm, a slight increase than the natural growth. However, with the Miracle Gro, bean plants raise to only 6 cm, 7 cm shorter than its natural growth without any fertilizer. In summary, among the four fertilizer brands, Granny’s Bloomers is the most effective one in terms of bean plant’s growth while Miracle Gro negatively affects its growth.
IELTS Writing Correction
- 1. Fix noun phrase Original: how bean plant’s growth is affected Suggested revision: how bean plant growth is affected Why it matters: The compound noun bean plant growth does not take a possessive marker here.
- 2. Fix article and label Original: Granny’s Bloomers and K Mark fertilizer are two most effective composts Suggested revision: Granny’s Bloomers and K Mark are the two most effective fertilizers Why it matters: The superlative needs the, and fertilizers accurately names both branded products.
- 3. Add definite article Original: Miracle Gro is least effective Suggested revision: Miracle Gro is the least effective Why it matters: A superlative adjective normally requires the definite article in this construction.
- 4. Use chart term Original: column graph Suggested revision: bar chart Why it matters: Bar chart is the standard term for this visual.
- 5. Clarify reference Original: its growth Suggested revision: plant growth Why it matters: The singular pronoun has no clear antecedent in the preceding plural noun phrase.
- 6. Use concise comparison Original: which helps this plant grow Suggested revision: raising the average height Why it matters: This wording states the measured effect directly and avoids a vague plant reference.
- 7. Fix fixed expression Original: on an average Suggested revision: on average Why it matters: The standard adverbial expression is on average without an article.
- 8. Fix verb agreement Original: K Mark, hike Suggested revision: K Mark, increases Why it matters: The singular subject requires a singular verb, and increases suits formal chart description.
- 9. Correct calculation Original: 11 cm higher Suggested revision: 9 cm higher Why it matters: The chart shows 22 cm with K Mark versus 13 cm without fertilizer, a difference of 9 cm.
- 10. Fix comparison phrase Original: bean plants natural growth Suggested revision: bean plants’ height without fertilizer Why it matters: The possessive marker and explicit baseline make the comparison grammatical and precise.
- 11. Fix comparison preposition Original: a slight increase than Suggested revision: a slight increase over Why it matters: Increase is compared with a baseline using over, not than.
- 12. Remove extra article Original: with the Miracle Gro Suggested revision: with Miracle Gro Why it matters: A branded product name does not require the definite article here.
Suggested Rewrites
- how bean plant’s growth is affected how bean plant growth is affected
- Granny’s Bloomers and K Mark fertilizer are two most effective composts Granny’s Bloomers and K Mark are the two most effective fertilizers
- Miracle Gro is least effective Miracle Gro is the least effective
- column graph bar chart
- its growth plant growth
- which helps this plant grow raising the average height
Why this response received Band 6.5
The report identifies the strongest and weakest fertilizers and covers every category with mostly accurate figures and useful comparisons. The main limitation is a factual error: K Mark's 22 cm result is nine, not eleven, centimetres above the 13 cm no-fertilizer baseline, while several grammar and word-choice errors reduce precision. Check every calculation against the chart and use accurate comparative structures and growth verbs.
IELTS Writing Criteria Scores
Detailed feedback by IELTS writing criterion after the annotated essay.
Task Achievement
The overview selects the main extremes and the report covers all five conditions, but the stated difference between K Mark and no fertilizer is inaccurate.
Verify each comparison against the chart, noting that 22 cm is nine centimetres above the 13 cm baseline.
Coherence and Cohesion
The report follows a clear introduction-overview-detail progression and moves logically from the strongest results to the weakest, though paragraph separation is limited.
Place the overview in its own paragraph and group the higher and lower results into two concise detail paragraphs.
Lexical Resource
There is adequate range for describing rankings and differences, but words such as 'composts,' 'hike,' and 'raise' are inaccurate or unnatural in context.
Use precise chart language such as 'fertilizers,' 'raises the average height,' 'grows to,' and 'lower than the baseline.'
Grammatical Range and Accuracy
Meaning remains clear and some complex sentences are attempted, but errors in agreement, articles, possessives, and comparative constructions occur repeatedly.
Check subject-verb agreement and comparison forms, for example 'K Mark raises growth' and 'a slight increase over the natural growth.'
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