botanical · Quality: phytochemicals · Lactuca sativa (garden lettuce)

Positive and negative results7 papers: 6 positive, 1 negative or no effect

8 claims from these papers.

Papers here report positive and negative or no-effect results. No pair of them has been accepted in the claim-by-claim check.

How these papers cite each other

None of these papers cites another one here.

Positive resultNegative result or no effect2012201420162018202020222024
  • Positive result
  • Negative result or no effect
  • Citation, pointing to the cited paper
  • Citation across the two sides
  • Larger circle: more citations overall

Years run left to right. Citations come from the papers’ OpenAlex reference lists. Hover a paper to bring forward its citations; click it to open the paper.

Papers reporting a positive result 6

  1. EFFECT OF GRAPE SEED EXTRACT ON PHENOLIC PROFILE AND BROWNING OF FRESH-CUT LETTUCE (L. SATIVA) · 2011

  2. Combination of Ascophyllum nodosum Extract and Humic Acid Improve Early Growth and Reduces Post-Harvest Loss of Lettuce and Spinach · 2019

  3. The Role of Vermicompost and Foliar Spray of SpirulinaPlatensis Extract on Vegetative Growth, Yield and NutritionStatus of Lettuce Plant under sandy soil · 2019

  4. The Combined and Single Effect of Marjoram Essential Oil, Ascorbic Acid, and Chitosan on Fresh-Cut Lettuce Preservation · 2021

  5. Plant extract improves quality traits of green and red lettuce cultivars · 2024

  6. Metabolomic and physiological insights into the biostimulant activity of Chlorella vulgaris extract in hydroponic lettuce under salinity stress · 2025

Papers reporting a negative result or no effect 1

  1. Beneficial microbes for improving circularity and yield in hydroponic crop cultivation · 2021

A paper is on the positive side when any of its claims here is positive. Claims are grouped by organism, treatment and what was measured or targeted. Claims that compare genotypes are left out; a claim about lacking a nutrient counts the other way round in that nutrient’s question. “Results differ” marks a question where two model reviewers, reading both claims, accepted at least one pair of papers whose results differ.

botanical on Lactuca sativa (garden lettuce) against other targets

botanical · quality: phytochemicals on other organisms