Abstract
Plots were established in a 'Ginger Gold' apple orchard to test the effects of different powdery mildew levels on cumulative yields. Disease pressure was heaviest in 1997 but yield effects were detected each year. Primary infection in 1997 and 1998 was correlated to previous foliar mildew incidence. Five myclobutanil applications followed by three of triadimefon (M5-T3) reduced primary infections in 1997 to 19% of those on trees not receiving a mildewcide (Ck). M5-T3 gave the most reduction in mildew incidence and severity but a schedule with two less applications (M3-T3) than M5-T3 gave the highest yield. Yields were lowest on trees not receiving a mildewcide. In 1998, the weakest and the strongest treatments had two and four times more flower clusters per tree, respectively, than Ck trees. Yield of the weakest mildew treatment (six applications of sulfur, S6), was about twice that of the Ck trees; several treatments yielded more than 2× S6. Increasing the number of sulfur applications from six to eight increased mildew control and yield. Most of the treatments resulted in yields higher than the nontreated control over a 3-year period. The M3-T3 treatment regime resulted in the highest 3-year yield, whereas a slightly more effective M5-T3 regime yielded slightly less. An economic analysis of cumulative treatment benefits, using local price inputs, is included.
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Claims 14
Claim · model-written summary
Yield effects of powdery mildew were detected each year.
- Taxon
- Apple
Malus domesticat0 - Interactor
- Powdery Mildewt0pathogen
- Outcome
- yield effectse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effect of Powdery Mildew on Apple Yield and Economic Benefits of Its Management in Virginia”
e2“Disease pressure was heaviest in 1997 but yield effects were detected each year”
Claim · model-written summary
Disease pressure was heaviest in 1997.
- Taxon
- AppleMalus domesticat0
- Interactor
- Powdery Mildewt0pathogen
- Outcome
- Disease pressuree2
- Qualifier
- heaviest in 1997e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effect of Powdery Mildew on Apple Yield and Economic Benefits of Its Management in Virginia”
e2“Disease pressure was heaviest in 1997 but yield effects were detected each year”
Claim · model-written summary
Primary infection in 1997 and 1998 was correlated with previous foliar mildew incidence.
- Taxon
- AppleMalus domesticat0
- Interactor
- mildewe3pathogen
- Outcome
- Primary infectione3
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effect of Powdery Mildew on Apple Yield and Economic Benefits of Its Management in Virginia”
e3“Primary infection in 1997 and 1998 was correlated to previous foliar mildew incidence”
Claim · model-written summary
Five myclobutanil applications followed by three of triadimefon (M5-T3) reduced primary infections in 1997 to 19% of those on untreated trees.
- Taxon
- AppleMalus domesticat0
- Treatment
- Five myclobutanil applications followed by three of triadimefon (M5-T3)e4
- Interactor
- Powdery Mildewt0pathogen
- Outcome
- primary infections in 1997e4
- Direction
- reducede4
- Value
- 19%e4
- Comparator
- trees not receiving a mildewcidee4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effect of Powdery Mildew on Apple Yield and Economic Benefits of Its Management in Virginia”
e4“Five myclobutanil applications followed by three of triadimefon (M5-T3) reduced primary infections in 1997 to 19% of those on trees not receiving a mildewcide (Ck)”
Claim · model-written summary
M5-T3 gave the largest reduction in mildew incidence and severity.
- Taxon
- AppleMalus domesticat0
- Treatment
- M5-T3e5
- Interactor
- Powdery Mildewt0pathogen
- Outcome
- mildew incidence and severitye5
- Direction
- most reductione5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effect of Powdery Mildew on Apple Yield and Economic Benefits of Its Management in Virginia”
e5“M5-T3 gave the most reduction in mildew incidence and severity but a schedule with two less applications (M3-T3) than M5-T3 gave the highest yield”
Claim · model-written summary
The M3-T3 schedule, with two fewer applications than M5-T3, gave the highest yield.
- Taxon
- AppleMalus domesticat0
- Treatment
- a schedule with two less applications (M3-T3)e5
- Interactor
- Powdery Mildewt0pathogen
- Outcome
- yielde5
- Direction
- higheste5
- Comparator
- M5-T3e5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effect of Powdery Mildew on Apple Yield and Economic Benefits of Its Management in Virginia”
e5“M5-T3 gave the most reduction in mildew incidence and severity but a schedule with two less applications (M3-T3) than M5-T3 gave the highest yield”
Claim · model-written summary
Yields were lowest on trees not receiving a mildewcide.
- Taxon
- AppleMalus domesticat0
- Treatment
- not receiving a mildewcidee6
- Interactor
- Powdery Mildewt0pathogen
- Outcome
- Yieldse6
- Direction
- loweste6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effect of Powdery Mildew on Apple Yield and Economic Benefits of Its Management in Virginia”
e6“Yields were lowest on trees not receiving a mildewcide”
Claim · model-written summary
In 1998, the weakest and the strongest treatments had two and four times more flower clusters per tree than Ck trees.
- Taxon
- AppleMalus domesticat0
- Treatment
- the weakest and the strongest treatmentse7
- Interactor
- Powdery Mildewt0pathogen
- Outcome
- flower clusters per treee7
- Direction
- moree7
- Value
- two and four timese7
- Comparator
- Ck treese7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effect of Powdery Mildew on Apple Yield and Economic Benefits of Its Management in Virginia”
e7“In 1998, the weakest and the strongest treatments had two and four times more flower clusters per tree, respectively, than Ck trees”
Claim · model-written summary
Yield of six sulfur applications (S6) was about twice that of Ck trees.
- Taxon
- AppleMalus domesticat0
- Treatment
- six applications of sulfur, S6e1
- Interactor
- Powdery Mildewt0pathogen
- Outcome
- Yielde1
- Direction
- about twicee1
- Comparator
- Ck treese1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effect of Powdery Mildew on Apple Yield and Economic Benefits of Its Management in Virginia”
e1“Yield of the weakest mildew treatment (six applications of sulfur, S6), was about twice that of the Ck trees”
Claim · model-written summary
Several sulfur treatments yielded more than 2× S6.
- Taxon
- AppleMalus domesticat0
- Treatment
- several treatmentse1
- Interactor
- Powdery Mildewt0pathogen
- Outcome
- yielde1
- Direction
- more thane1
- Value
- 2×e1
- Comparator
- S6e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effect of Powdery Mildew on Apple Yield and Economic Benefits of Its Management in Virginia”
e1“several treatments yielded more than 2× S6”
Claim · model-written summary
Increasing sulfur applications from six to eight increased mildew control and yield.
- Taxon
- AppleMalus domesticat0
- Treatment
- Increasing the number of sulfur applications from six to eighte1
- Interactor
- Powdery Mildewt0pathogen
- Outcome
- mildew control and yielde1
- Direction
- increasede1
- Comparator
- sixe1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effect of Powdery Mildew on Apple Yield and Economic Benefits of Its Management in Virginia”
e1“Increasing the number of sulfur applications from six to eight increased mildew control and yield”
Claim · model-written summary
Most treatments gave higher yields than the nontreated control over a 3-year period.
- Taxon
- AppleMalus domesticat0
- Treatment
- Most of the treatmentse1
- Interactor
- Powdery Mildewt0pathogen
- Outcome
- yieldse1
- Direction
- highere1
- Qualifier
- over a 3-year periode1
- Comparator
- nontreated controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effect of Powdery Mildew on Apple Yield and Economic Benefits of Its Management in Virginia”
e1“Most of the treatments resulted in yields higher than the nontreated control over a 3-year period”
Claim · model-written summary
The M3-T3 treatment regime gave the highest 3-year yield.
- Taxon
- AppleMalus domesticat0
- Treatment
- The M3-T3 treatment regimee1
- Interactor
- Powdery Mildewt0pathogen
- Outcome
- 3-year yielde1
- Direction
- higheste1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effect of Powdery Mildew on Apple Yield and Economic Benefits of Its Management in Virginia”
e1“The M3-T3 treatment regime resulted in the highest 3-year yield, whereas a slightly more effective M5-T3 regime yielded slightly less”
Claim · model-written summary
The slightly more effective M5-T3 regime yielded slightly less than M3-T3.
- Taxon
- AppleMalus domesticat0
- Treatment
- a slightly more effective M5-T3 regimee1
- Interactor
- Powdery Mildewt0pathogen
- Outcome
- yielde1
- Direction
- slightly lesse1
- Comparator
- M3-T3e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effect of Powdery Mildew on Apple Yield and Economic Benefits of Its Management in Virginia”
e1“The M3-T3 treatment regime resulted in the highest 3-year yield, whereas a slightly more effective M5-T3 regime yielded slightly less”
The same questions in other papers
sulfur atom · yield · Malus domestica (apple)Results differ
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See all 20 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.