Abstract
The use of agricultural chemicals has adversely affected soil health and the environment. Organic farming practices, particularly vermicompost (VC), are gaining attention for their potential to improve soil fertility and crop productivity. This study investigated VC rate applications on lettuce growth, yield, soil fertility, nutrient dynamics, enzyme activity, biological parameters, and biochemical aspects under greenhouse conditions in Samsun, Turkey during 2022–2023. Experimentally, VC was applied at rates of V1: 1%, V2: 2%, and V3: 4% w/w, with a control group without VC application, V0: 0% w/w. Batavia lettuce, which is sensitive to environmental conditions and nutrient deficiency, was subjected to these treatments in a randomized complete block design, replicated thrice. Results showed consistent improvements in plant dry weight across all VC treatments, with the 2% application rate (V2) yielding the highest increase in lettuce yield (56.43%). Soil pH varied across treatments, with V1 being slightly alkaline and V3 showing high electrical conductivity and increased nitrogen content. Phosphorus content increased in all treatments, while potassium varied, with V3 having the highest values. Soil enzyme activities increased with VC concentrations, with V3 showing the highest urease activity. Pearson correlations confirmed positive associations with growth parameters and soil enzymatic activity. These findings highlight vermicompost as a sustainable solution for lettuce production and soil improvement.
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Claims 10
Claim · model-written summary
Vermicompost treatments consistently improved lettuce dry weight.
- Taxon
- lettuce
Lactuca sativae0 - Treatment
- all VC treatmentse0
- Outcome
- plant dry weighte0
- Direction
- improvementse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Results showed consistent improvements in plant dry weight across all VC treatments, with the 2% application rate (V2) yielding the highest increase in lettuce yield (56.43%).”
Claim · model-written summary
The 2% vermicompost rate gave the highest lettuce yield increase, 56.43%.
- Taxon
- lettuceLactuca sativae0
- Treatment
- 2% application rate (V2)e0
- Outcome
- lettuce yielde0
- Direction
- highest increasee0
- Value
- 56.43%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Results showed consistent improvements in plant dry weight across all VC treatments, with the 2% application rate (V2) yielding the highest increase in lettuce yield (56.43%).”
Claim · model-written summary
Soil pH varied across vermicompost treatments and V1 was slightly alkaline.
- Taxon
- LettuceLactuca sativat0
- Outcome
- Soil pHe0
- Qualifier
- V1 being slightly alkalinee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soil pH varied across treatments, with V1 being slightly alkaline and V3 showing high electrical conductivity and increased nitrogen content.”
t0“Lettuce”
Claim · model-written summary
V3 produced high soil electrical conductivity.
- Taxon
- LettuceLactuca sativat0
- Treatment
- V3e0
- Outcome
- electrical conductivitye0
- Direction
- highe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soil pH varied across treatments, with V1 being slightly alkaline and V3 showing high electrical conductivity and increased nitrogen content.”
t0“Lettuce”
Claim · model-written summary
V3 increased soil nitrogen content.
- Taxon
- LettuceLactuca sativat0
- Treatment
- V3e0
- Outcome
- nitrogen contente0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soil pH varied across treatments, with V1 being slightly alkaline and V3 showing high electrical conductivity and increased nitrogen content.”
t0“Lettuce”
Claim · model-written summary
Soil phosphorus content increased under all treatments.
- Taxon
- LettuceLactuca sativat0
- Treatment
- all treatmentse0
- Outcome
- Phosphorus contente0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Phosphorus content increased in all treatments, while potassium varied, with V3 having the highest values.”
t0“Lettuce”
Claim · model-written summary
Soil potassium varied across treatments, with V3 highest.
- Taxon
- LettuceLactuca sativat0
- Treatment
- V3e0
- Outcome
- potassiume0
- Direction
- higheste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Phosphorus content increased in all treatments, while potassium varied, with V3 having the highest values.”
t0“Lettuce”
Claim · model-written summary
Soil enzyme activities increased with vermicompost concentration.
- Taxon
- LettuceLactuca sativat0
- Treatment
- VC concentrationse0
- Outcome
- Soil enzyme activitiese0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soil enzyme activities increased with VC concentrations, with V3 showing the highest urease activity.”
t0“Lettuce”
Claim · model-written summary
V3 had the highest soil urease activity.
- Taxon
- LettuceLactuca sativat0
- Treatment
- V3e0
- Outcome
- urease activitye0
- Direction
- higheste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soil enzyme activities increased with VC concentrations, with V3 showing the highest urease activity.”
t0“Lettuce”
Claim · model-written summary
Growth parameters were positively associated with soil enzymatic activity.
- Taxon
- LettuceLactuca sativat0
- Outcome
- growth parameterse0
- Direction
- positive associationse0
- Comparator
- soil enzymatic activitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pearson correlations confirmed positive associations with growth parameters and soil enzymatic activity.”
t0“Lettuce”
The same questions in other papers
fertilization · growth · Lactuca sativa (garden lettuce)Positive and negative results
201 papers in the same direction as this paper · 45 in the opposite direction · 1 reporting no difference from an alternative
- positive
- negative
- negative
244 papers more in this group
See all 248 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.