Abstract
Sclerotinia blight of peanut, caused by Sclerotinia minor, generally becomes severe only after vines meet in the row middles and a dense canopy develops. Dense foliage appears to support a microclimate conducive to the colonization of peanut limbs by S. minor. Removal of excess foliage before and during a Sclerotinia blight epidemic on the susceptible genotype NC 7 has been shown to reduce the rate of disease progress. Field tests in 1993 and 1994 examined control of Sclerotinia blight among four peanut genotypes (NC 7, VA 93B, NC Ac 18016, and Tam-span 90) with diverse canopy morphologies. Each cultivar had foliage pruned with a rotary mower once (1993 and 1994) or twice (1994) during the season. Applications of fluazinam (9.2 kg a.i./ha) were imposed on the genotype × pruning treatments. Soil temperatures under the canopy of each genotype and pruning treatment were measured and compared. Disease data were collected weekly by counting the number of feet of plants exhibiting lesions with visible fungus growth. Tamspan 90, a resistant Spanish peanut, had the least Sclerotinia blight incidence. Pruning measurably affected soil temperature for approximately 2 weeks following pruning. Removal of foliage reduced disease and increased disease control affected by fluazi-nam in fields with high disease pressure. In some tests, yields were increased by pruning through a reduction in disease pressure. Yields were lower when peanuts were pruned excessively, especially late in the season. Pruning of excessive vine growth can be an alternative, or complement, to fungicide treatments when done in midseason during favorable weather when moderate to high disease pressure occurs.
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Claims 8
Claim · model-written summary
Sclerotinia blight generally became severe after peanut vines met and canopy density increased.
- Taxon
- peanut
Arachis hypogaeae0 - Organ / stage
- vinese0
- Interactor
- Sclerotinia minorSclerotinia minore0pathogent0
- Outcome
- Sclerotinia blighte0
- Direction
- severee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sclerotinia blight of peanut, caused by Sclerotinia minor, generally becomes severe only after vines meet in the row middles and a dense canopy develops”
t0“Sclerotinia Blight”
Claim · model-written summary
Tamspan 90 had the least Sclerotinia blight incidence.
- Taxon
- peanutArachis hypogaeae0
- Material
- Tamspan 90e0
- Interactor
- Sclerotinia
Sclerotiniat0pathogen - Outcome
- Sclerotinia blight incidencee0
- Direction
- leaste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Tamspan 90, a resistant Spanish peanut, had the least Sclerotinia blight incidence”
t0“Sclerotinia Blight in Peanut”
Claim · model-written summary
Pruning measurably altered soil temperature for about two weeks.
- Taxon
- peanutArachis hypogaeat0
- Treatment
- Pruninge0
- Outcome
- soil temperaturee0
- Value
- 2 weekse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pruning measurably affected soil temperature for approximately 2 weeks following pruning”
t0“peanut”
Claim · model-written summary
Foliage removal reduced disease in fields with high disease pressure.
- Taxon
- peanutArachis hypogaeat0
- Treatment
- Removal of foliagee0
- Interactor
- SclerotiniaSclerotiniat0pathogen
- Outcome
- diseasee0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Removal of foliage reduced disease and increased disease control affected by fluazi-nam in fields with high disease pressure”
t0“Sclerotinia Blight in Peanut”
Claim · model-written summary
Foliage removal increased disease control by fluazinam under high disease pressure.
- Taxon
- peanutArachis hypogaeat0
- Treatment
- Removal of foliagee0
- Interactor
- SclerotiniaSclerotiniat0pathogen
- Outcome
- disease control affected by fluazi-name0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Removal of foliage reduced disease and increased disease control affected by fluazi-nam in fields with high disease pressure”
t0“Sclerotinia Blight in Peanut”
Claim · model-written summary
In some tests pruning increased yields by reducing disease pressure.
- Taxon
- peanutArachis hypogaeat0
- Treatment
- pruninge0
- Outcome
- yieldse0
- Direction
- increasede0
- Qualifier
- In some testse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In some tests, yields were increased by pruning through a reduction in disease pressure”
t0“peanut”
Claim · model-written summary
Excessive pruning, particularly late in the season, lowered yields.
- Taxon
- peanutsArachis hypogaeae0
- Treatment
- pruned excessivelye0
- Outcome
- Yieldse0
- Direction
- lowere0
- Qualifier
- especially late in the seasone0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Yields were lower when peanuts were pruned excessively, especially late in the season”
Claim · model-written summary
The authors recommend midseason pruning as an alternative or complement to fungicide during favorable weather and moderate to high disease pressure.
- Taxon
- peanutArachis hypogaeat0
- Outcome
- Pruning of excessive vine growthe0
- Qualifier
- midseason during favorable weather when moderate to high disease pressuree0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Pruning of excessive vine growth can be an alternative, or complement, to fungicide treatments when done in midseason during favorable weather when moderate to high disease pressure occurs”
t0“peanut”
The same questions in other papers
pruning · yield · Arachis hypogaea (peanut)Results differ
6 papers in the same direction as this paper · 12 in the opposite direction
- negative
- negative
- no effect
15 papers more in this group
See all 19 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.