Abstract
Abstract Stripe rust of winter bread wheat ( Triticum aestivum L.) causes substantial grain yield loss in Central Asia. This study involved two replicated field experiments undertaken in 2009–2010 and 2010–2011 winter wheat crop seasons. The first experiment was conducted to determine grain yield reductions on susceptible winter wheat cultivars using single and two sprays of fungicide at Zadoks growth stages Z61–Z69 in two farmers’ fields in Tajikistan and one farmer's field in Uzbekistan. In the second experiment, four different fungicides at two concentrations were evaluated at Zadoks growth stage Z69. These included three products from BASF – Opus (0.5 l/ha and 1.0 l/ha), Platoon (0.5 l/ha and 1.0 l/ha) and Opera (0.75 l/ha and 1.5 l/ha) – and locally used fungicide Titul 390 (0.5 l/ha and 1.0 l/ha). One and two sprays of fungicides did not differ significantly (P > 0.05) in increasing grain yield. Stripe rust reduced grain yield and 1000‐kernel weight ( TKW ) from 24 to 39% and from 16 to 24%, respectively. The benefits from the two concentrations of the same fungicide did not consistently resulted in significantly higher grain yield, suggesting that the lower concentrations could be more cost effective. Our study provides important information about the selection of fungicides, spray concentrations and number of spray to control stripe rust and increase grain yield. The findings could play an important role in developing stripe rust management approaches such as fungicide rotation and strategic fungicide applications in Central Asian countries.
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Claims 5
Claim · model-written summary
One and two fungicide sprays did not differ significantly in increasing wheat grain yield.
- Taxon
- winter bread wheat
Triticum aestivumt0 - Treatment
- two sprays of fungicidese0
- Outcome
- grain yielde0
- Direction
- did not differe0
- Qualifier
- P > 0.05e0
- Comparator
- Onee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“One and two sprays of fungicides did not differ significantly (P > 0.05) in increasing grain yield.”
t0“winter bread wheat”
Claim · model-written summary
Stripe rust reduced grain yield by 24 to 39%.
- Taxon
- wheatTriticum aestivumt0
- Interactor
- Stripe ruste0pathogen
- Outcome
- grain yielde0
- Direction
- reducede0
- Value
- 24 to 39%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Stripe rust reduced grain yield and 1000‐kernel weight ( TKW ) from 24 to 39% and from 16 to 24%, respectively.”
t0“Wheat”
Claim · model-written summary
Stripe rust reduced thousand-kernel weight by 16 to 24%.
- Taxon
- wheatTriticum aestivumt0
- Interactor
- Stripe ruste0pathogen
- Outcome
- 1000‐kernel weighte0
- Direction
- reducede0
- Value
- 16 to 24%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Stripe rust reduced grain yield and 1000‐kernel weight ( TKW ) from 24 to 39% and from 16 to 24%, respectively.”
t0“Wheat”
Claim · model-written summary
Higher concentrations of the same fungicide did not consistently give significantly higher grain yield.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- two concentrations of the same fungicidee0
- Outcome
- grain yielde0
- Direction
- highere0
- Qualifier
- did not consistentlye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The benefits from the two concentrations of the same fungicide did not consistently resulted in significantly higher grain yield”
t0“Wheat”
Claim · model-written summary
The authors suggest lower fungicide concentrations could be more cost effective.
- Taxon
- wheatTriticum aestivumt0
- Outcome
- lower concentrations could be more cost effectivee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“suggesting that the lower concentrations could be more cost effective.”
t0“Wheat”
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