mancozeb · Yield · Allium cepa (onion)

Results differ10 papers: 9 positive, 1 negative or no effect · 1 pair of papers confirmed to differ

11 claims from these papers.

Papers whose results differ, checked claim by claim 1

1 pair of papers on this question report results that differ: an effect in one paper, the opposite effect or no effect in the other. Two model reviewers reading both claims accepted each pair.

Control of onion downy mildew in the presence of phenylamide-resistant strains of Peronospora destructor (Berk.) Caspary (1992)
increaseMancozeb treatment increased yield by 60% in 1990.
Reduction of Onion Yields by Chlorothalonil1 (1982)
no changeMancozeb and untreated onions showed no significant difference in measured yield components.
The records name no dose, test system or situation that separates the two claims.Compare the two papers →

How these papers cite each other

None of these papers cites another one here.

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 9

Chemical Control of Basal Rot of Onion in Zambia · 1981
- positive
  Granosan 200 dust increased yield by 106%.
- positive
  After six weeks storage, controls lost 94% of bulbs versus 45% with benomyl plus mancozeb.
  compared with controls
Control of onion downy mildew in the presence of phenylamide-resistant strains of Peronospora destructor (Berk.) Caspary · 1992
- positive
  Mancozeb treatment increased yield by 60% in 1990.
EVALUATION OF FUNGICIDES FOR CONTROLLING DOWNY MILDEW AND PURPLE BLOTCH DISEASES OF ONION · 1995
- positive
  These three fungicides increased onion seed and bulb yield by 82–111% over control.
Efficacy of Botanicals, Bioagents and Fungicides on Management of Leaf Blight (Altbrnaria Porri) of Onion. · 2008
- positive
  Mancozeb spray gave 10.57 t/ha bulb yield, significantly above other treatments.
Management of purple blotch and Stemphylium blight of onion in Tarai and Bhabar regions of Uttarakhand, India · 2016
- positive
  Mancozeb plus monochrotophos yielded 1844.44 kg/ha of onion seed versus 893.33 kg/ha for the check.
  compared with check
Polymer coating for higher pesticide use efficiency, seed yield and quality in onion (Allium cepa) · 2019
- positive
  The coating increased seed yield per plant to 21.15 g.
  compared with control and traditional method of bulb treatment
Management of bulb rot of onion caused by Erwinia carotovora pv. carotovora · 2020
- positive
  Combined bulb dip and sprays produced maximum seed yield of 1022 kg/ha.
  compared with rest of the treatments
Management of Onion Rust through Host Resistance and Alternate Application of Fungicides in Adjara,Georgia · 2022
- positive
  Lower relative yield losses were recorded with Mancozeb and Nativo applied alone.
Influence of Plant Density and Fungicides on Downy Mildew (Peronospora Destructor) and Bulb Yield of Onion in Ethiopia · 2024
- positive
  That treatment gave the highest net benefit with acceptable marginal return.

Papers reporting a negative result or no effect 1

Reduction of Onion Yields by Chlorothalonil1 · 1982
- no effect
  Mancozeb and untreated onions showed no significant difference in measured yield components.
  compared with untreated check

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.

mancozeb · Yield · Allium cepa (onion)

Papers whose results differ, checked claim by claim 1

How these papers cite each other

Papers reporting a positive result 9

Papers reporting a negative result or no effect 1

mancozeb on Allium cepa (onion) against other targets

mancozeb · yield on other organisms