Abstract
The spatial variation in plant species associated with intercropping is intended to reduce resource competition between species and increase yield potential. A field experiment was carried out on corn (Zea mays L.) and soybean (Glycine max L.) intercropping in a replacement series experiment with weed contamination consist of: weed free, infestation of redroot pigweed, infestation of jimsonweed and simultaneous infestation of redroot pigweed and jimsonweed in Karaj, Iran during 2007 growing season. The experimental design was a randomized complete block in factorial experiment with replicated thrice. Significant (P≤0.05) differences were observed in yield in intercropping. Corn yield was higher in intercropping, but soybean yield was significantly reduced by corn when intercropped. However, total productivity and land use efficiency were high under the intercropping system even in contamination of either species of weeds. Aggressivity of corn relative to soybean revealed the greater competitive ability of corn than soybean. Land equivalent ratio (LER) more than 1 in all treatments attributed to intercropping advantages and was highest in 50: 50 (corn/soybean) in weed free. These findings suggest that intercropping corn and soybean increase total productivity per unit area and improve land use efficiency. Considering the experimental findings, corn-soybean intercropping (50:50) may be recommended for yield advantage, more efficient utilization of resources, and weed suppression as a biological control.
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Claims 7
Claim · model-written summary
Corn yield was higher in corn-soybean intercropping than in the comparison systems.
- Taxon
- corn
Zea mays subsp. mayse0 - Treatment
- intercroppinge1
- Outcome
- Corn yielde1
- Direction
- highere1
- Setting
- Karaj, Irane3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“corn (Zea mays L.) and soybean (Glycine max L.) intercropping”
e1“Corn yield was higher in intercropping”
e2“Significant (P≤0.05) differences were observed in yield in intercropping”
e3“in Karaj, Iran during 2007 growing season”
Claim · model-written summary
Corn reduced soybean yield in intercropping.
- Taxon
- soybean
Glycine maxe2 - Treatment
- corn when intercroppede2
- Interactor
- cornZea mays subsp. mayse2other
- Outcome
- soybean yielde2
- Direction
- reducede2
- Setting
- Karaj, Irane3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“corn (Zea mays L.) and soybean (Glycine max L.) intercropping”
e2“soybean yield was significantly reduced by corn when intercropped”
e3“in Karaj, Iran during 2007 growing season”
Claim · model-written summary
Total productivity and land use efficiency were high under the intercropping system even with either weed species present.
- Taxon
- cornZea mays subsp. mayse0
- Treatment
- intercropping systeme3
- Interactor
- weedse3weed
- Outcome
- total productivity and land use efficiencye3
- Direction
- highe3
- Qualifier
- even in contamination of either species of weedse3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“corn (Zea mays L.) and soybean (Glycine max L.) intercropping”
e3“total productivity and land use efficiency were high under the intercropping system even in contamination of either species of weeds”
Claim · model-written summary
Land equivalent ratio was more than 1 in all intercropping treatments.
- Taxon
- cornZea mays subsp. mayse0
- Treatment
- intercroppinge4
- Outcome
- Land equivalent ratio (LER)e4
- Direction
- more thane4
- Value
- more than 1e4
- Qualifier
- in all treatmentse4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“corn (Zea mays L.) and soybean (Glycine max L.) intercropping”
e4“Land equivalent ratio (LER) more than 1 in all treatments attributed to intercropping advantages”
Claim · model-written summary
Land equivalent ratio was highest at the 50:50 corn/soybean ratio in weed-free plots.
- Taxon
- cornZea mays subsp. mayse0
- Treatment
- 50: 50 (corn/soybean)e5
- Outcome
- Land equivalent ratio (LER)e4
- Direction
- higheste5
- Qualifier
- in weed freee5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“corn (Zea mays L.) and soybean (Glycine max L.) intercropping”
e4“Land equivalent ratio (LER) more than 1 in all treatments attributed to intercropping advantages”
e5“was highest in 50: 50 (corn/soybean) in weed free”
Claim · model-written summary
Corn had greater competitive ability than soybean in intercropping.
- Taxon
- cornZea mays subsp. mayse0
- Outcome
- competitive abilitye6
- Direction
- greatere6
- Comparator
- soybeane6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“corn (Zea mays L.) and soybean (Glycine max L.) intercropping”
e6“Aggressivity of corn relative to soybean revealed the greater competitive ability of corn than soybean”
Claim · model-written summary
Corn-soybean intercropping at 50:50 may be recommended for yield advantage, resource use and weed suppression.
- Taxon
- cornZea mays subsp. mayse7
- Outcome
- corn-soybean intercropping (50:50)e7
- Qualifier
- for yield advantage, more efficient utilization of resources, and weed suppression as a biological controle7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“corn-soybean intercropping (50:50) may be recommended for yield advantage, more efficient utilization of resources, and weed suppression as a biological control”
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