Abstract
In the course of an experiment in Arganda del Rey (Autonomous Community of Madrid), a herbicide was tested in a grain corn field heavily infested with weeds. The herbicide, a mixture of metolachlor and atrazine, was applied when the corn had developed eight leaves. There was a great variety of weed species and their distribution in the plots depending on the climatic conditions. The control achieved with the herbicide was high, 100% in 1992 and 90.5% in 1993. Weed control improved the growth, grain yield, number of grains per ear, 1,000 grain weight, ? grain content, total uptake of nitrogen (N), phosphorus (P), and potassium (K) by the plant, and ?, ? and ? translocation efficiency to the corn grain. Per 100 g/m2 of additional weed dry weight, there was a grain yield decrease of 98.2 kg/ha as well as a decrease of the total uptake of N, P, and ? of 14.6, 2.7 and 9.5 kg/ha, respectively, by the corn plant.
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Claims 10
Claim · model-written summary
Herbicide control of weeds was 100% in 1992.
Not reportedComparator
Verbatim
e0“The control achieved with the herbicide was high, 100% in 1992 and 90.5% in 1993”
t0“grain corn through weed control”
Claim · model-written summary
Herbicide control of weeds was 90.5% in 1993.
- Taxon
- grain cornt0
- Treatment
- herbicidee0
- Interactor
- weedt0weed
- Outcome
- controle0
- Direction
- highe0
- Value
- 90.5%e0
Not reportedComparator
Verbatim
e0“The control achieved with the herbicide was high, 100% in 1992 and 90.5% in 1993”
t0“grain corn through weed control”
Claim · model-written summary
Weed control improved corn growth, grain yield and grain number per ear.
- Taxon
- corn
Zea mays subsp. mayst0 - Treatment
- Weed controle0
- Interactor
- weedt0weed
- Outcome
- growth, grain yield, number of grains per eare0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Weed control improved the growth, grain yield, number of grains per ear”
t0“grain corn through weed control”
Claim · model-written summary
Weed control improved 1,000 grain weight and grain content.
- Taxon
- cornZea mays subsp. mayst0
- Treatment
- Weed controle1
- Interactor
- weedt0weed
- Outcome
- 1,000 grain weight, ? grain contente0
- Direction
- improvede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“1,000 grain weight, ? grain content”
e1“Weed control improved the growth, grain yield, number of grains per ear, 1,000 grain weight”
t0“grain corn through weed control”
Claim · model-written summary
Weed control improved plant nitrogen, phosphorus and potassium uptake.
- Taxon
- cornZea mays subsp. mayst0
- Treatment
- Weed controle1
- Interactor
- weedt0weed
- Outcome
- total uptake of nitrogen (N), phosphorus (P), and potassium (K) by the plante0
- Direction
- improvede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“total uptake of nitrogen (N), phosphorus (P), and potassium (K) by the plant”
e1“Weed control improved the growth, grain yield, number of grains per ear, 1,000 grain weight, ? grain content, total uptake”
t0“grain corn through weed control”
Claim · model-written summary
Weed control improved translocation efficiency to corn grain.
- Taxon
- cornZea mays subsp. mayse0
- Treatment
- Weed controle1
- Interactor
- weedt0weed
- Outcome
- translocation efficiencye0
- Direction
- improvede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“? translocation efficiency to the corn grain”
e1“Weed control improved the growth”
t0“weed control”
Claim · model-written summary
Each additional 100 g/m2 of weed dry weight was associated with 98.2 kg/ha lower grain yield.
- Taxon
- cornZea mays subsp. mayst0
- Interactor
- weede0weed
- Outcome
- grain yielde0
- Direction
- decreasee0
- Value
- 98.2 kg/hae0
- Qualifier
- 100 g/m2 of additional weed dry weighte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Per 100 g/m2 of additional weed dry weight, there was a grain yield decrease of 98.2 kg/ha”
t0“grain corn”
Claim · model-written summary
Each additional 100 g/m2 of weed dry weight was associated with less nitrogen uptake, listed as 14.6 in a series ending in kg/ha.
- Taxon
- cornZea mays subsp. mayse0
- Interactor
- weede1weed
- Outcome
- total uptake of Ne0
- Direction
- decreasee0
- Value
- 14.6e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“decrease of the total uptake of N, P, and ? of 14.6, 2.7 and 9.5 kg/ha, respectively, by the corn plant”
e1“additional weed dry weight”
Claim · model-written summary
Each additional 100 g/m2 of weed dry weight was associated with less phosphorus uptake, listed as 2.7 in a series ending in kg/ha.
- Taxon
- cornZea mays subsp. mayse0
- Interactor
- weede1weed
- Outcome
- total uptake of N, Pe0
- Direction
- decreasee0
- Value
- 2.7e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“decrease of the total uptake of N, P, and ? of 14.6, 2.7 and 9.5 kg/ha, respectively, by the corn plant”
e1“additional weed dry weight”
Claim · model-written summary
Each additional 100 g/m2 of weed dry weight was associated with 9.5 kg/ha less uptake of an illegible nutrient.
- Taxon
- cornZea mays subsp. mayse0
- Interactor
- weede1weed
- Outcome
- total uptake of N, P, and ?e0
- Direction
- decreasee0
- Value
- 9.5 kg/hae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“decrease of the total uptake of N, P, and ? of 14.6, 2.7 and 9.5 kg/ha, respectively, by the corn plant”
e1“additional weed dry weight”
The same questions in other papers
herbicide · nutrient: content · Zea mays (maize)Positive and negative results
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- negative
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- no effect
- negative
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See all 651 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.