Abstract
In order to study the influence of tillage methods on weed control in corn (single cross 704), an experiment was conducted in Miandoab research station for 3 years from 2014-2017.The design of experiment was spilt plot based on random block designed. Main factor was two tillage method with chisel and mould board plow in 25 cm depth and weed control methods as sub factor in 4 level were: chemical control with using of 2 L /ha (Cruz) Nicosulfuron (4% S.C), mechanical control with 2 times cultivation between rows in 2 and 8 leaves stage of corn, control treatment without weeds (with 3-hand weeding) and control treatment with weeds. Analysis of variance results indicated that the effect of tillage methods on corn yield was not significant. Average of corn yield in different tillage methods were 9.422 and 9.148 respectively but the effect of control methods was significant at 1%level.Means comparison by Duncans multiple range test showed that chemical control and hand weeding respectively with 11.285 and 10.85 were placed in a same group but mechanical control and without control respectively with 8.654 and 6.357 were placed in another groups. Analysis of variance results indicated that the effect of Tillage methods on density of common purslane and barnyard grass was significant at 1%level but on the other weeds, tillage method didn't show any effect on their density. Average of density of barnyard grass during 3 years with mould board plow and chisel were43/083, 12 respectively and average of density of common purslane with mould board plow and chisel were6/917 and 14/5 respectively and they were placed in separated group by using of Duncans multiple range test. Main weeds of experiment were: I. Red root pigweed (Amaranthus retroflexus) II. Lambsquarters (Chenopodium album) III. Common purslane (Portulaca oleraceae) IV. Barnyard grass (Echinochloa crus-galli) V. Field bindweed (Convolvulus arvensis)
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Claims 9
Claim · model-written summary
Weed control methods significantly affected corn yield.
- Taxon
- corn
Zea mays subsp. mayse1 - Treatment
- control methodse3
- Outcome
- corn yielde4
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“In order to study the influence of tillage methods on weed control in corn (single cross 704)”
e3“the effect of control methods was significant at 1%level”
e4“Average of corn yield in different tillage methods were 9.422 and 9.148 respectively”
Claim · model-written summary
Chemical control with nicosulfuron gave a higher corn yield (11.285) than mechanical control.
- Taxon
- cornZea mays subsp. mayse1
- Treatment
- chemical controle4
- Outcome
- corn yielde3
- Direction
- higherinferrede2
- Value
- 11.285e2
- Comparator
- mechanical controle2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“In order to study the influence of tillage methods on weed control in corn (single cross 704)”
e2“chemical control and hand weeding respectively with 11.285 and 10.85 were placed in a same group but mechanical control and without control respectively with 8.654 and 6.357 were placed in another groups”
e3“Average of corn yield in different tillage methods were 9.422 and 9.148 respectively”
e4“chemical control with using of 2 L /ha (Cruz) Nicosulfuron”
Claim · model-written summary
Mechanical control gave a lower corn yield (8.654) than chemical control.
- Taxon
- cornZea mays subsp. mayse1
- Treatment
- mechanical controle2
- Outcome
- corn yielde3
- Direction
- lowerinferrede2
- Value
- 8.654e2
- Comparator
- chemical controle2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“In order to study the influence of tillage methods on weed control in corn (single cross 704)”
e2“chemical control and hand weeding respectively with 11.285 and 10.85 were placed in a same group but mechanical control and without control respectively with 8.654 and 6.357 were placed in another groups”
e3“Average of corn yield in different tillage methods were 9.422 and 9.148 respectively”
Claim · model-written summary
Without weed control gave the lowest corn yield (6.357).
- Taxon
- cornZea mays subsp. mayse1
- Treatment
- without controle2
- Outcome
- corn yielde3
- Direction
- lowerinferrede2
- Value
- 6.357e2
- Comparator
- chemical controle2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“In order to study the influence of tillage methods on weed control in corn (single cross 704)”
e2“chemical control and hand weeding respectively with 11.285 and 10.85 were placed in a same group but mechanical control and without control respectively with 8.654 and 6.357 were placed in another groups”
e3“Average of corn yield in different tillage methods were 9.422 and 9.148 respectively”
Claim · model-written summary
Hand weeding gave a higher corn yield (10.85) than mechanical control.
- Taxon
- cornZea mays subsp. mayse1
- Treatment
- hand weedinge2
- Outcome
- corn yielde3
- Direction
- higherinferrede2
- Value
- 10.85e2
- Comparator
- mechanical controle2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“In order to study the influence of tillage methods on weed control in corn (single cross 704)”
e2“chemical control and hand weeding respectively with 11.285 and 10.85 were placed in a same group but mechanical control and without control respectively with 8.654 and 6.357 were placed in another groups”
e3“Average of corn yield in different tillage methods were 9.422 and 9.148 respectively”
Claim · model-written summary
Tillage methods had no significant effect on corn yield.
- Taxon
- cornZea mays subsp. mayse1
- Treatment
- tillage methodse4
- Outcome
- corn yielde4
- Direction
- no_changeinferrede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“In order to study the influence of tillage methods on weed control in corn (single cross 704)”
e4“the effect of tillage methods on corn yield was not significant”
Claim · model-written summary
Tillage methods significantly affected the density of common purslane and barnyard grass.
- Taxon
- cornZea mays subsp. mayse1
- Treatment
- Tillage methodse5
- Interactor
- common purslanee5weed
- Second interactor
- barnyard grass
Echinochloa crus-gallie5weed - Outcome
- density of common purslane and barnyard grasse5
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“In order to study the influence of tillage methods on weed control in corn (single cross 704)”
e5“the effect of Tillage methods on density of common purslane and barnyard grass was significant at 1%level”
Claim · model-written summary
Barnyard grass density was higher under mould board plow than under chisel tillage, 43/083 against 12.
- Taxon
- cornZea mays subsp. mayse1
- Treatment
- mould board plowe6
- Interactor
- barnyard grassEchinochloa crus-gallie6weed
- Outcome
- density of barnyard grasse6
- Direction
- higherinferrede6
- Value
- 43/083, 12e6
- Comparator
- chisele6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“In order to study the influence of tillage methods on weed control in corn (single cross 704)”
e6“Average of density of barnyard grass during 3 years with mould board plow and chisel were43/083, 12 respectively”
Claim · model-written summary
Common purslane density was lower under mould board plow than under chisel tillage, 6/917 against 14/5.
- Taxon
- cornZea mays subsp. mayse1
- Treatment
- mould board plowe7
- Interactor
- common purslanee7weed
- Outcome
- density of common purslanee7
- Direction
- lowerinferrede7
- Value
- 6/917 and 14/5e7
- Comparator
- chisele7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“In order to study the influence of tillage methods on weed control in corn (single cross 704)”
e7“average of density of common purslane with mould board plow and chisel were6/917 and 14/5 respectively”
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