Abstract
Efficacy of 10 fungicides was tested for controlling downy mildew caused by Peronospora destructor (Berk.) and purple blotch caused by Alternaria porn (Ellis) on onion. Seed onion trials were carried out at Kaha, Sids and Mallawy Experiment Stations from 1987 through 1989. Trials of bulb onion were done at Sakha and Mallawy Exp. Sta. from 1988 through 1990. Reduction in disease incidence and increase in seed and bulb yield over non-treated control were used to determine the efficacy of fungicides tested. All fungicides were foliar sprayed at the rate of 250 g / 100 L except Sandofan M8 (200 g/100 L) and Galben Mancozeb and Galben Copper (1 50 g/100 L). Fungicide sprays were started 45 days after planting and repeated every 15 days till harvesting. Ridomil Mz 72% (metalaxyl 8% + mancozeb 64%) and Ridomil Mz 58 (metalaxyl 10% + mancozeb 48%) were the most effective fungicides reducing disease on seed and bulb onions by 86%, and increasing seed and bulb yield over control by 194% and 199%, respectively. Sandofan M8 (oxadixyl 8% + mancozeb 56%) was also effective against these pathogens giving 76% and 79% reduction in disease severity on seed and bulb onions, respectively, and 137% increase in seed and bulb yields over control. Ripost M 67.2% (Oxadixyl 8% + mancozeb 56% + cymoxanil 3.2%). Galben Mancozeb 58% (benalaxyl 10% + mancozeb 48%) and Sandocur C (oxadixyl 6.9% + mancozeb 48% + cymoxanil 14.2%) exhibited 64-73% reduction in disease incidence and resulted in 82-111% increase in seed and bulb yield, except Ripest M 67.2% with seed onion which increased seed yield by 139% over non-treated control. Comaprop 50% (zineb 10 % + propineb 10% + copper oxychloride 30%), Comazin 50% (zineb 10 % + maneb 10% + copper oxychloride 30%), Galben Copper 46% (benalaxyl 11% + copper oxychloride 35%) and Mika! M 70% (Phosetyl - Al 44% + mancozeb 26%) were less effective and reduced disease by 47-58% on seed and bulb onions with up to 81% increase in yield over control.
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Claims 13
Claim · model-written summary
Ridomil Mz 72% and Ridomil Mz 58 reduced onion disease by 86%.
- Taxon
- onion
Allium cepat0 - Treatment
- Ridomil Mz 72%e0
- Outcome
- disease on seed and bulb onionse0
- Direction
- reducinge0
- Value
- 86%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ridomil Mz 72% (metalaxyl 8% + mancozeb 64%) and Ridomil Mz 58 (metalaxyl 10% + mancozeb 48%) were the most effective fungicides reducing disease on seed and bulb onions by 86%”
t0“onion”
Claim · model-written summary
Ridomil Mz 72% increased onion seed yield by 194% versus control.
- Taxon
- onionAllium cepat0
- Treatment
- Ridomil Mz 72%e0
- Outcome
- seed and bulb yielde0
- Direction
- increasinge0
- Value
- 194%e0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ridomil Mz 72% (metalaxyl 8% + mancozeb 64%) and Ridomil Mz 58 (metalaxyl 10% + mancozeb 48%) were the most effective fungicides reducing disease on seed and bulb onions by 86%, and increasing seed and bulb yield over control by 194% and 199%, respectively.”
t0“onion”
Claim · model-written summary
Ridomil Mz 58 increased onion bulb yield by 199% versus control.
- Taxon
- onionAllium cepat0
- Treatment
- Ridomil Mz 58e0
- Outcome
- bulb yielde0
- Direction
- increasinge0
- Value
- 199%e0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ridomil Mz 72% (metalaxyl 8% + mancozeb 64%) and Ridomil Mz 58 (metalaxyl 10% + mancozeb 48%) were the most effective fungicides reducing disease on seed and bulb onions by 86%, and increasing seed and bulb yield over control by 194% and 199%, respectively.”
t0“onion”
Claim · model-written summary
Sandofan M8 reduced disease severity in seed onion by 76%.
- Taxon
- onionAllium cepat0
- Treatment
- Sandofan M8e0
- Outcome
- disease severity on seed and bulb onionse0
- Direction
- reductione0
- Value
- 76%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sandofan M8 (oxadixyl 8% + mancozeb 56%) was also effective against these pathogens giving 76% and 79% reduction in disease severity on seed and bulb onions, respectively”
t0“onion”
Claim · model-written summary
Sandofan M8 reduced disease severity in bulb onion by 79%.
- Taxon
- onionAllium cepat0
- Treatment
- Sandofan M8e0
- Outcome
- disease severity on seed and bulb onionse0
- Direction
- reductione0
- Value
- 79%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sandofan M8 (oxadixyl 8% + mancozeb 56%) was also effective against these pathogens giving 76% and 79% reduction in disease severity on seed and bulb onions, respectively”
t0“onion”
Claim · model-written summary
Sandofan M8 raised onion seed and bulb yields by 137% over control.
- Taxon
- onionAllium cepat0
- Treatment
- Sandofan M8e1
- Outcome
- seed and bulb yieldse0
- Direction
- increasee0
- Value
- 137%e0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“137% increase in seed and bulb yields over control”
e1“Sandofan M8 (oxadixyl 8% + mancozeb 56%)”
t0“onion”
Claim · model-written summary
Ripost M 67.2% reduced onion disease incidence by 64–73%.
- Taxon
- onionAllium cepat0
- Treatment
- Ripost M 67.2%e0
- Outcome
- disease incidencee0
- Direction
- reductione0
- Value
- 64-73%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ripost M 67.2% (Oxadixyl 8% + mancozeb 56% + cymoxanil 3.2%). Galben Mancozeb 58% (benalaxyl 10% + mancozeb 48%) and Sandocur C (oxadixyl 6.9% + mancozeb 48% + cymoxanil 14.2%) exhibited 64-73% reduction in disease incidence”
t0“onion”
Claim · model-written summary
Galben Mancozeb 58% reduced onion disease incidence by 64–73%.
- Taxon
- onionAllium cepat0
- Treatment
- Galben Mancozeb 58%e0
- Outcome
- disease incidencee0
- Direction
- reductione0
- Value
- 64-73%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Galben Mancozeb 58% (benalaxyl 10% + mancozeb 48%) and Sandocur C (oxadixyl 6.9% + mancozeb 48% + cymoxanil 14.2%) exhibited 64-73% reduction in disease incidence”
t0“onion”
Claim · model-written summary
Sandocur C reduced onion disease incidence by 64–73%.
- Taxon
- onionAllium cepat0
- Treatment
- Sandocur Ce0
- Outcome
- disease incidencee0
- Direction
- reductione0
- Value
- 64-73%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sandocur C (oxadixyl 6.9% + mancozeb 48% + cymoxanil 14.2%) exhibited 64-73% reduction in disease incidence”
t0“onion”
Claim · model-written summary
These three fungicides increased onion seed and bulb yield by 82–111% over control.
- Taxon
- onionAllium cepat0
- Treatment
- Galben Mancozeb 58%e1
- Outcome
- seed and bulb yielde0
- Direction
- increasee0
- Value
- 82-111%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“resulted in 82-111% increase in seed and bulb yield”
e1“Ripost M 67.2% (Oxadixyl 8% + mancozeb 56% + cymoxanil 3.2%). Galben Mancozeb 58% (benalaxyl 10% + mancozeb 48%) and Sandocur C (oxadixyl 6.9% + mancozeb 48% + cymoxanil 14.2%)”
t0“onion”
Claim · model-written summary
Ripest M 67.2% increased seed onion yield by 139% over non-treated control.
- Taxon
- onionAllium cepae0
- Treatment
- Ripest M 67.2%e0
- Outcome
- seed yielde0
- Direction
- increasede0
- Value
- 139%e0
- Comparator
- non-treated controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ripest M 67.2% with seed onion which increased seed yield by 139% over non-treated control”
Claim · model-written summary
The four less effective fungicides reduced onion disease by 47–58%.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Comaprop 50% (zineb 10 % + propineb 10% + copper oxychloride 30%), Comazin 50% (zineb 10 % + maneb 10% + copper oxychloride 30%), Galben Copper 46% (benalaxyl 11% + copper oxychloride 35%) and Mika! M 70% (Phosetyl - Al 44% + mancozeb 26%) were less effective and reduced disease by 47-58% on seed and bulb onions”
Claim · model-written summary
The less effective fungicides raised onion yield by up to 81% over control.
- Taxon
- onionAllium cepat0
- Treatment
- Comaprop 50%e1
- Outcome
- yielde0
- Direction
- increasee0
- Value
- up to 81%e0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“with up to 81% increase in yield over control”
e1“Comaprop 50% (zineb 10 % + propineb 10% + copper oxychloride 30%), Comazin 50% (zineb 10 % + maneb 10% + copper oxychloride 30%), Galben Copper 46% (benalaxyl 11% + copper oxychloride 35%) and Mika! M 70% (Phosetyl - Al 44% + mancozeb 26%)”
t0“onion”
The same questions in other papers
mancozeb · yield · Allium cepa (onion)Results differ
8 papers in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
- positive
6 papers more in this group
See all 10 papers →mancozeb · disease · Allium cepa (onion)Results agree
11 papers in the same direction as this paper
- positive
- positive
- positive
8 papers more in this group
See all 12 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.