Abstract
Abstract Field experiments were conducted in two winter wheat fields to assess weed control and quantify the amount of herbicide applied with a GIS map‐based patch sprayer. Site specific weed management decisions were based on previously acquired weed distribution maps and an economic weed threshold model. A weed treatment map (on‐off) was generated and georeferenced to control the sprayer. A global positioning system was used to locate the sprayer in the field. In both fields, Alopecurus myos‐uroides was observed at low infestation levels, Galium aparine at medium infestation levels and the mean density for other broadleaf species exceeded 40 weed seedlings va‐ in both fields. Herbicide application was recommended for 58.3% of the first field and 54.6% of the second field. With the patch sprayer used for this study, 21% less herbicides were sprayed compared to an uniform broadcast application. Additional assessments of weed density in the first field 3 and 6 weeks after site specific weed control showed that almost the entire field was weed free. The results of this study demonstrated that site specific weed control was technically feasible but further investigations are needed to verify and evaluate site specific weed control methods.
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Claims 5
Claim · model-written summary
Herbicide application was recommended for 58.3% of the first field.
- Taxon
- winter wheat
Triticum aestivumt0 - Outcome
- Herbicide applicatione1
- Value
- 58.3%e1
- Setting
- first fielde1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Site Specific Weed Control in Winter Wheat”
e1“Herbicide application was recommended for 58.3% of the first field and 54.6% of the second field”
Claim · model-written summary
Herbicide application was recommended for 54.6% of the second field.
- Taxon
- winter wheatTriticum aestivumt0
- Outcome
- Herbicide applicatione1
- Value
- 54.6%e1
- Setting
- second fielde1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Site Specific Weed Control in Winter Wheat”
e1“Herbicide application was recommended for 58.3% of the first field and 54.6% of the second field”
Claim · model-written summary
The patch sprayer applied 21% less herbicide than uniform broadcast application.
- Taxon
- winter wheatTriticum aestivumt0
- Treatment
- patch sprayere2
- Outcome
- herbicidese2
- Direction
- lesse2
- Value
- 21%e2
- Comparator
- uniform broadcast applicatione2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Site Specific Weed Control in Winter Wheat”
e2“With the patch sprayer used for this study, 21% less herbicides were sprayed compared to an uniform broadcast application”
Claim · model-written summary
After site-specific weed control, almost the entire field was weed free at 3 and 6 weeks.
- Taxon
- winter wheatTriticum aestivumt0
- Treatment
- site specific weed controle3
- Outcome
- weed densitye3
- Qualifier
- almost the entire field was weed freee3
- Setting
- first fielde3
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Site Specific Weed Control in Winter Wheat”
e3“Additional assessments of weed density in the first field 3 and 6 weeks after site specific weed control showed that almost the entire field was weed free”
Claim · model-written summary
Site-specific weed control was technically feasible, though further investigations are needed.
- Taxon
- winter wheatTriticum aestivumt0
- Outcome
- site specific weed control was technically feasiblee4
- Qualifier
- further investigations are needed to verify and evaluatee4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Site Specific Weed Control in Winter Wheat”
e4“The results of this study demonstrated that site specific weed control was technically feasible but further investigations are needed to verify and evaluate site specific weed control methods”
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