Claim · model-written summary
The three-factor combination gave the highest total yield of lettuce, 33.904 tons per hectare, versus 16.275 tons per hectare in the distilled-water control.
- Taxon
- lettuce
Lactuca sativae0 - Treatment
- sulfur at 25 kg ha-1 + tryptophan at 200 mg L-1 + and methyl jasmonate at 100 mg L-1e1
- Outcome
- total yielde1
- Direction
- higheste1
- Value
- 33.904 tons ha-1e1
- Qualifier
- 16.275 tons per hectaree2
- Comparator
- control treatment, where plants were only sprayed with distilled watere2
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleSetting
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“growth and yield of lettuce plants (Lactuca sativa L.)”
e1“The combination of the three factors at the levels (sulfur at 25 kg ha-1 + tryptophan at 200 mg L-1 + and methyl jasmonate at 100 mg L-1) resulted in the highest values in the studied yield indicators of the plant (average marketable head weight (were 753.42 g per plant), and total yield (33.904 tons ha-1)”
e2“the control treatment, where plants were only sprayed with distilled water, gave the lowest results, with 361.66 g per plant and 16.275 tons per hectare”
Title
Hisham A. Amran European Journal of Theoretical and Applied Sciences 2024. doi:10.59324/ejtas.2024.2(4).71
Other claims from this paper (9)
- Intervention effect The combined sulfur, tryptophan and methyl jasmonate treatment increased lettuce plant height to 35.84 cm per plant, versus 27.96 cm in the distilled-water control.
- Intervention effect The combined treatment increased lettuce stem diameter to 3.89 cm per plant, versus 2.65 cm in the distilled-water control.
- Intervention effect The combined treatment increased the total number of leaves to 44.36 per plant, versus 26.71 in the distilled-water control.
- Intervention effect The combined treatment increased lettuce plant dry weight to 48.30 g per plant, versus 25.18 g in the distilled-water control.
- Intervention effect The combined treatment increased total soluble carbohydrate content in lettuce leaves to 29.15 mg g-1 dry weight, versus 18.06 in the control.
- Intervention effect The combined treatment increased the percentage of fiber in lettuce leaves to 37.06%, versus 15.27% in the control.
- Intervention effect The combined treatment is reported as increasing nitrate concentration in lettuce leaves (797.41 mg kg-1), while the control value is given as 1824.03 mg kg-1.
- Intervention effect The combined treatment increased oil estimation in lettuce to 3.46%, versus 1.03% in the control.
- Intervention effect The three-factor combination gave the highest average marketable head weight of lettuce, 753.42 g per plant, versus 361.66 g per plant in the distilled-water control.