Abstract
Two field experiments were set up at the Central Experiment Station, College of Agriculture, UP Los Banos to compare weed management costs and grain yields of corn using weed management based on calendared treatments (CT) and weed control action indicators (WCAI) against itchgrass (Rottboellia cochinchinensis), purple nutsedge (Cyperus rotundus), jungle rice (Echinochloa colona), and dayflower (Commelina benghalensis). In both experiments, calendared treatments included hoe weeding at 15, 30 and 45 days after sowing (DAS), and inter-row cultivation (IRC) at 16 and 30 DAS. Grain yields and ear lengths in plots under CT were comparable to those of WCAI plots that received only one hoe weeding (HoW) at 30 DAS in both trials. The highest weed management cost was obtained from the CT plots, those that were hoe-weeded 3 times. Use of WCAI reduced weed management cost compared to 3 HoW by 50% in the first and by 60% in the second experiment. IRC reduced weed management cost compared to 3 HoW by 46% in the first and 56% in the second experiment. Weeds in the unweeded plots reduced corn grain yields by 44 to 46%.
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Claims 7
Claim · model-written summary
Corn grain yields and ear lengths under calendared treatments were comparable to one hoe weeding at 30 DAS.
- Taxon
- corn
Zea mays subsp. mayst0 - Treatment
- CTe0
- Outcome
- Grain yields and ear lengthse0
- Direction
- comparablee0
- Qualifier
- both trialse0
- Comparator
- WCAI plots that received only one hoe weeding (HoW) at 30 DASe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Grain yields and ear lengths in plots under CT were comparable to those of WCAI plots that received only one hoe weeding (HoW) at 30 DAS in both trials”
t0“corn”
Claim · model-written summary
Three hoe weedings had the highest weed management cost.
- Taxon
- cornZea mays subsp. mayst0
- Treatment
- hoe-weeded 3 timese0
- Outcome
- weed management coste0
- Direction
- higheste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest weed management cost was obtained from the CT plots, those that were hoe-weeded 3 times”
t0“corn”
Claim · model-written summary
WCAI reduced weed management cost 50% against three hoe weedings in the first experiment.
- Taxon
- cornZea mays subsp. mayst0
- Treatment
- WCAIe0
- Outcome
- weed management coste0
- Direction
- reducede0
- Value
- 50%e0
- Qualifier
- firste0
- Comparator
- 3 HoWe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Use of WCAI reduced weed management cost compared to 3 HoW by 50% in the first and by 60% in the second experiment”
t0“corn”
Claim · model-written summary
WCAI reduced weed management cost 60% against three hoe weedings in the second experiment.
- Taxon
- cornZea mays subsp. mayst0
- Treatment
- WCAIe0
- Outcome
- weed management coste0
- Direction
- reducede0
- Value
- 60%e0
- Qualifier
- second experimente0
- Comparator
- 3 HoWe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Use of WCAI reduced weed management cost compared to 3 HoW by 50% in the first and by 60% in the second experiment”
t0“corn”
Claim · model-written summary
Inter row cultivation reduced weed management cost 46% against three hoe weedings in the first experiment.
- Taxon
- cornZea mays subsp. mayst0
- Treatment
- IRCe0
- Outcome
- weed management coste0
- Direction
- reducede0
- Value
- 46%e0
- Qualifier
- firste0
- Comparator
- 3 HoWe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“IRC reduced weed management cost compared to 3 HoW by 46% in the first and 56% in the second experiment”
t0“corn”
Claim · model-written summary
Inter row cultivation reduced weed management cost 56% against three hoe weedings in the second experiment.
- Taxon
- cornZea mays subsp. mayst0
- Treatment
- IRCe0
- Outcome
- weed management coste0
- Direction
- reducede0
- Value
- 56%e0
- Qualifier
- second experimente0
- Comparator
- 3 HoWe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“IRC reduced weed management cost compared to 3 HoW by 46% in the first and 56% in the second experiment”
t0“corn”
Claim · model-written summary
Weeds in unweeded corn plots reduced grain yield by 44 to 46%.
- Taxon
- cornZea mays subsp. mayse0
- Treatment
- Weeds in the unweeded plotse0
- Interactor
- Weedse0weed
- Outcome
- corn grain yieldse0
- Direction
- reducede0
- Value
- 44 to 46%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Weeds in the unweeded plots reduced corn grain yields by 44 to 46%”
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See all 1,099 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.