Abstract
The effect of seed treatment fungicides on cotton seedling stand establishment, skips and yield were assessed in field experiments conducted at the Safford Agricultural Center of the University of Arizona in 2009 and 2010. In 2009, two field trials were conducted, one inoculated with Rhizoctonia solani, the most common cause of damping-off or collapse of seedlings in Arizona, and the other not inoculated. In 2010, the trial was repeated, but the field was not inoculated. Seed of low and high vigor ST4554 BR2RF was treated (1) as a non-treated control; or with (2) base fungicide made up of Baytan + Vortex + Allegiance, (3) base fungicide + Trilex Advanced, (4) base fungicide + Dynasty CST. Seed vigor was based on cool germination percentage. Efficacy of seed fungicide treatments were determined by stand count, seed cotton yield and skip indices. Disease incidence was very low in both years, and effects of fungicide treatments generally made little or no difference in stand establishment or yield. Seed vigor was significant in both years. Results indicate that, under low disease pressure, fungicide seed treatments are marginally effective in increasing stands in the early season, but these increases are not translated into increased yield. The most important variable in these experiments was seed vigor indicating that growers should consider the cool germ percentage of cotton varieties and seed lots when making planting decisions.
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Claims 6
Claim · model-written summary
Disease incidence was very low in both years.
- Taxon
- cotton
Gossypium hirsutumt0 - Outcome
- Disease incidencee0
- Qualifier
- both yearse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Disease incidence was very low in both years”
t0“cotton”
Claim · model-written summary
Fungicide treatments generally made little or no difference to cotton stand establishment or yield.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- fungicide treatmentse0
- Outcome
- stand establishment or yielde0
- Direction
- little or no differencee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“effects of fungicide treatments generally made little or no difference in stand establishment or yield.”
t0“cotton”
Claim · model-written summary
Seed vigor was a significant variable in both years.
- Taxon
- cottonGossypium hirsutumt0
- Outcome
- Seed vigore0
Not reportedMaterialDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seed vigor was significant in both years.”
t0“cotton”
Claim · model-written summary
Under low disease pressure, fungicide seed treatments were marginally effective at raising early stands.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- fungicide seed treatmentse0
- Outcome
- standse0
- Direction
- increasinge0
- Qualifier
- under low disease pressuree0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“under low disease pressure, fungicide seed treatments are marginally effective in increasing stands in the early season”
t0“cotton”
Claim · model-written summary
Early stand increases from fungicide seed treatments did not increase yield.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- fungicide seed treatmentse1
- Outcome
- yielde0
- Direction
- not translated into increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“these increases are not translated into increased yield.”
e1“fungicide seed treatments”
t0“cotton”
Claim · model-written summary
Growers should consider cool germination percentage when selecting cotton varieties and seed lots.
- Taxon
- cottonGossypium hirsutume0
- Outcome
- consider the cool germ percentage of cotton varieties and seed lots when making planting decisionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“growers should consider the cool germ percentage of cotton varieties and seed lots when making planting decisions.”
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