Abstract
Abstract The fungicides iprodione, vinclozolin, and procymidone were compared for the control of onion white rot in two trials in the Pukekohe (South Auckland) district of New Zealand during the 1984–85 and 1985–86 crop years. Neither iprodione nor vinclozolin was effective as a seed treatment or as a combination of seed treatment and foliar sprays. Procymidone was highly effective when used in a combination of seed treatment (5.0 g a.i./kg seed) and foliar sprays (0.75 kg a.i./ha monthly × 4). In the year of higher disease incidence (1984–85) plant losses were reduced from 58 to 20% using a combination of procymidone seed treatment and foliar sprays. In‐furrow applications of procymidone (3.0 kg a.i./ha) at planting were highly effective in controlling the disease but were severely phytotoxic to young plants. Highest yields were obtained in procymidone‐treated plots. Seed treatment with iprodione gave higher yields than did untreated controls (captan 8 g a.i./kg seed) despite the failure to control white rot. The failure of both iprodione and vinclozolin to control disease in these trials, whereas both were effective in previous trials, suggests that these chemicals may have succumbed to the phenomenon of enhanced degradation in the soil.
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Claims 9
Claim · model-written summary
Iprodione seed treatment did not effectively control onion white rot.
- Taxon
- onion
Allium cepat0 - Treatment
- iprodionee0
- Outcome
- white rott0
- Direction
- Neithere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Neither iprodione nor vinclozolin was effective as a seed treatment or as a combination of seed treatment and foliar sprays.”
t0“onion white rot”
Claim · model-written summary
Vinclozolin seed treatment did not effectively control onion white rot.
- Taxon
- onionAllium cepat0
- Treatment
- vinclozoline0
- Outcome
- white rott0
- Direction
- Neithere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Neither iprodione nor vinclozolin was effective as a seed treatment or as a combination of seed treatment and foliar sprays.”
t0“onion white rot”
Claim · model-written summary
Procymidone seed treatment with foliar sprays was highly effective against onion white rot.
- Taxon
- onionAllium cepat0
- Treatment
- Procymidonee0
- Outcome
- white rott0
- Direction
- highly effectivee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Procymidone was highly effective when used in a combination of seed treatment (5.0 g a.i./kg seed) and foliar sprays (0.75 kg a.i./ha monthly × 4).”
t0“onion white rot”
Claim · model-written summary
Procymidone seed treatment with foliar sprays reduced onion plant losses from 58 to 20% in 1984–85.
- Taxon
- onionAllium cepat0
- Treatment
- combination of procymidone seed treatment and foliar sprayse0
- Outcome
- plant lossese0
- Direction
- reducede0
- Value
- 58 to 20%e0
- Qualifier
- 1984–85e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the year of higher disease incidence (1984–85) plant losses were reduced from 58 to 20% using a combination of procymidone seed treatment and foliar sprays.”
t0“onion white rot”
Claim · model-written summary
In-furrow procymidone at planting controlled onion white rot effectively.
- Taxon
- onionAllium cepat0
- Treatment
- procymidone (3.0 kg a.i./ha)e0
- Outcome
- controlling the diseasee0
- Direction
- highly effectivee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In‐furrow applications of procymidone (3.0 kg a.i./ha) at planting were highly effective in controlling the disease but were severely phytotoxic to young plants.”
t0“onion white rot”
Claim · model-written summary
In-furrow procymidone at planting was severely phytotoxic to young onion plants.
- Taxon
- onionAllium cepat0
- Treatment
- procymidone (3.0 kg a.i./ha)e0
- Outcome
- phytotoxic to young plantse0
- Direction
- severely phytotoxice0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In‐furrow applications of procymidone (3.0 kg a.i./ha) at planting were highly effective in controlling the disease but were severely phytotoxic to young plants.”
t0“onion white rot”
Claim · model-written summary
Procymidone-treated onion plots had the highest yields.
- Taxon
- onionAllium cepat0
- Treatment
- procymidone‐treatede0
- Outcome
- yieldse0
- Direction
- Higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Highest yields were obtained in procymidone‐treated plots.”
t0“onion white rot”
Claim · model-written summary
Iprodione seed treatment gave higher onion yields than untreated controls.
- Taxon
- onionAllium cepat0
- Treatment
- Seed treatment with iprodionee0
- Outcome
- yieldse0
- Direction
- highere0
- Comparator
- untreated controlse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seed treatment with iprodione gave higher yields than did untreated controls (captan 8 g a.i./kg seed) despite the failure to control white rot.”
t0“onion white rot”
Claim · model-written summary
The authors suggest enhanced degradation in soil may explain the failure of iprodione and vinclozolin to control onion white rot.
- Taxon
- onionAllium cepat0
- Treatment
- iprodione and vinclozoline0
- Outcome
- failure of both iprodione and vinclozolin to control diseasee0
- Qualifier
- enhanced degradation in the soile0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The failure of both iprodione and vinclozolin to control disease in these trials, whereas both were effective in previous trials, suggests that these chemicals may have succumbed to the phenomenon of enhanced degradation in the soil.”
t0“onion white rot”
The same questions in other papers
iprodione · disease · Allium cepa (onion)Positive and negative results
3 in the opposite direction
- positive
- positive
- positive
procymidone · crop injury · Allium cepa (onion)Results agree
1 paper in the same direction as this paper
- negative
procymidone · disease · Allium cepa (onion)Results agree
2 papers in the same direction as this paper
- positive
- positive
iprodione · yield · Allium cepa (onion)Results agree
3 papers in the same direction as this paper
- positive
- positive
- positive
seed treatment · yield · Allium cepa (onion)Positive and negative results
11 papers in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
- positive
9 papers more in this group
See all 13 papers →application · survival · Allium cepa (onion)Results agree
1 paper in the same direction as this paper
- positive
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.