Abstract
The aim of this study was to determine the economic damage threshold of Pigweed redroot for corn regarding its density. An experiment was conducted at the Agriculture Research station of Islamic Azad University branch of Gonabad during 2006. The experiment was carried out as a factorial in a randomized complete block design with three replications. In the experiments, the factors included corn (var. 704) densities of 7.5, 8.5 and 9.5 plants m-2 and pigweed redroot densities of 0, 2, 4, 6 and 8 plants m-2. The increase in Pigweed redroot density, decrease in crop grain and biomass yield components such as ear length, ear diameter, number of grains per row, row number, grain number in ear, grain yield and biological yield of corn, decreased. Also, with an increase in corn density, the number of grain per rows, row number, grain yield and biological yield of corn increased. The economic thresholds density of Pigweed redroot was 0.09 to 0.13 plants m-2 in corn different densities, and increased with corn density increases.
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Claims 8
Claim · model-written summary
Increasing redroot pigweed density decreased corn grain yield.
- Taxon
- corn
Zea mays subsp. mayse1 - Treatment
- Pigweed redroot densitye1
- Interactor
- Pigweed redroote1weed
- Outcome
- grain yielde1
- Direction
- decreasede1
- Setting
- Agriculture Research station of Islamic Azad University branch of Gonabade4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The increase in Pigweed redroot density, decrease in crop grain and biomass yield components such as ear length, ear diameter, number of grains per row, row number, grain number in ear, grain yield and biological yield of corn, decreased”
e4“An experiment was conducted at the Agriculture Research station of Islamic Azad University branch of Gonabad during 2006”
t0“Zea mays”
Claim · model-written summary
Increasing redroot pigweed density decreased corn biological yield.
- Taxon
- cornZea mays subsp. mayse1
- Treatment
- Pigweed redroot densitye1
- Interactor
- Pigweed redroote1weed
- Outcome
- biological yielde1
- Direction
- decreasede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The increase in Pigweed redroot density, decrease in crop grain and biomass yield components such as ear length, ear diameter, number of grains per row, row number, grain number in ear, grain yield and biological yield of corn, decreased”
t0“Zea mays”
Claim · model-written summary
Increasing redroot pigweed density decreased corn ear length and ear diameter.
- Taxon
- cornZea mays subsp. mayse1
- Treatment
- Pigweed redroot densitye1
- Interactor
- Pigweed redroote1weed
- Outcome
- ear length, ear diametere1
- Direction
- decreasede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The increase in Pigweed redroot density, decrease in crop grain and biomass yield components such as ear length, ear diameter, number of grains per row, row number, grain number in ear, grain yield and biological yield of corn, decreased”
t0“Zea mays”
Claim · model-written summary
Increasing redroot pigweed density decreased corn grains per row, row number and grain number in ear.
- Taxon
- cornZea mays subsp. mayse1
- Treatment
- Pigweed redroot densitye1
- Interactor
- Pigweed redroote1weed
- Outcome
- number of grains per row, row number, grain number in eare1
- Direction
- decreasede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The increase in Pigweed redroot density, decrease in crop grain and biomass yield components such as ear length, ear diameter, number of grains per row, row number, grain number in ear, grain yield and biological yield of corn, decreased”
t0“Zea mays”
Claim · model-written summary
Increasing corn density increased corn grain yield and biological yield.
- Taxon
- cornZea mays subsp. mayse2
- Treatment
- corn densitye2
- Outcome
- grain yield and biological yield of corne2
- Direction
- increasede2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Also, with an increase in corn density, the number of grain per rows, row number, grain yield and biological yield of corn increased”
t0“Zea mays”
Claim · model-written summary
Increasing corn density increased the number of grains per row and row number.
- Taxon
- cornZea mays subsp. mayse2
- Treatment
- corn densitye2
- Outcome
- number of grain per rows, row numbere2
- Direction
- increasede2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Also, with an increase in corn density, the number of grain per rows, row number, grain yield and biological yield of corn increased”
t0“Zea mays”
Claim · model-written summary
The economic threshold density of redroot pigweed in corn was 0.09 to 0.13 plants m-2.
- Taxon
- cornZea mays subsp. mayse3
- Interactor
- Pigweed redroote3weed
- Outcome
- economic thresholds densitye3
- Value
- 0.09 to 0.13 plants m-2e3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“The economic thresholds density of Pigweed redroot was 0.09 to 0.13 plants m-2 in corn different densities, and increased with corn density increases”
t0“Zea mays”
Claim · model-written summary
The economic threshold density of redroot pigweed increased with corn density.
- Taxon
- cornZea mays subsp. mayse3
- Treatment
- corn densitye3
- Interactor
- Pigweed redroote3weed
- Outcome
- economic thresholds densitye3
- Direction
- increasede3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“The economic thresholds density of Pigweed redroot was 0.09 to 0.13 plants m-2 in corn different densities, and increased with corn density increases”
t0“Zea mays”