Abstract
Western Corn Rootworm (WCR) (Diabrotica virgifera virgifera Le Conte) is very important corn pest. The pest was spread in Croatia from 1995 to 1999 on 12,750 km2 . In the area of Stara Gunja, hybrid OSSK 444 was sown in order to investigate the possibilities of controls WCR with below ground insecticides - Counter G-5, Dursban G-7,5 and Dotan G-5. With checking root for larvae and cocoons 0.02 larvae was estimated on treated plots and 0.05 larvae on untreated plots. The number of cocoons was 0.12 in treated, and 0.25 on untreated plots. The number of imagoes on silk was 0.05–0.10 per plant. The imagoes of the WCR were caught with Pheromone and Multigard traps from the third decade of June until the first decade of October. On the traps settled on the treated plot (336 m2 ), 1,376 imagoes were caught, compared to untreated plot (112 m2 ) where 431 imagoes were caught. The yield of corn was 8.03 t/ha in treatment with Dotan, 8.44 t/ha in treatment with Dursban, and 8.72 t/ha in treatment with Counter, while the lowest 7.98 t/ha was in control plot was. Low number of caught imagoes per plant, shows that, for now, the implementation of chemical preparations wasn’t justified. This kind of investigations should be continuing in the future, and the checking of corn roots must be done earlier in order to determine correct number of larvae on roots and the root damages.
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Claims 11
Claim · model-written summary
Below-ground insecticide treatment lowered western corn rootworm larvae on corn roots to 0.02 per plant, against 0.05 on untreated plots.
- Taxon
- corn
Zea mays subsp. mayse0 - Material
- hybrid OSSK 444e2
- Treatment
- below ground insecticidese3
- Interactor
- Diabrotica virgifera virgifera
Diabrotica virgifera virgiferae0pest - Outcome
- larvaee4
- Direction
- decreaseinferrede4
- Value
- 0.02 larvaee4
- Qualifier
- 0.05 larvae on untreated plotse4
- Comparator
- untreated plotse4
- Setting
- Stara Gunjae1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Western Corn Rootworm (WCR) (Diabrotica virgifera virgifera Le Conte) is very important corn pest”
e1“In the area of Stara Gunja”
e2“hybrid OSSK 444 was sown”
e3“investigate the possibilities of controls WCR with below ground insecticides”
e4“With checking root for larvae and cocoons 0.02 larvae was estimated on treated plots and 0.05 larvae on untreated plots”
Claim · model-written summary
Below-ground insecticide treatment lowered the number of western corn rootworm cocoons on corn roots to 0.12, against 0.25 on untreated plots.
- Taxon
- cornZea mays subsp. mayse0
- Material
- hybrid OSSK 444e2
- Treatment
- below ground insecticidese3
- Interactor
- Diabrotica virgifera virgiferaDiabrotica virgifera virgiferae0pest
- Outcome
- number of cocoonse6
- Direction
- decreaseinferrede6
- Value
- 0.12e6
- Qualifier
- 0.25 on untreated plotse6
- Comparator
- untreated plotse6
- Setting
- Stara Gunjae1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Western Corn Rootworm (WCR) (Diabrotica virgifera virgifera Le Conte) is very important corn pest”
e1“In the area of Stara Gunja”
e2“hybrid OSSK 444 was sown”
e3“investigate the possibilities of controls WCR with below ground insecticides”
e6“The number of cocoons was 0.12 in treated, and 0.25 on untreated plots”
Claim · model-written summary
Western corn rootworm imagoes on silk numbered 0.05 to 0.10 per corn plant at Stara Gunja.
- Taxon
- cornZea mays subsp. mayse0
- Material
- hybrid OSSK 444e2
- Interactor
- Diabrotica virgifera virgiferaDiabrotica virgifera virgiferae0pest
- Outcome
- number of imagoes on silke7
- Value
- 0.05–0.10 per plante7
- Setting
- Stara Gunjae1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Western Corn Rootworm (WCR) (Diabrotica virgifera virgifera Le Conte) is very important corn pest”
e1“In the area of Stara Gunja”
e2“hybrid OSSK 444 was sown”
e7“The number of imagoes on silk was 0.05–0.10 per plant”
Claim · model-written summary
Insecticide-treated plots caught 1,376 western corn rootworm imagoes in traps, against 431 on the untreated plot.
- Taxon
- cornZea mays subsp. mayse0
- Material
- hybrid OSSK 444e2
- Treatment
- below ground insecticidese3
- Interactor
- Diabrotica virgifera virgiferaDiabrotica virgifera virgiferae0pest
- Outcome
- imagoes were caughte4
- Direction
- higherinferrede4
- Value
- 1,376e4
- Qualifier
- 431 imagoese5
- Comparator
- untreated plote5
- Setting
- Stara Gunjae1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Western Corn Rootworm (WCR) (Diabrotica virgifera virgifera Le Conte) is very important corn pest”
e1“In the area of Stara Gunja”
e2“hybrid OSSK 444 was sown”
e3“investigate the possibilities of controls WCR with below ground insecticides”
e4“On the traps settled on the treated plot (336 m2 ), 1,376 imagoes were caught”
e5“compared to untreated plot (112 m2 ) where 431 imagoes were caught”
Claim · model-written summary
Corn treated with Dotan below-ground insecticide yielded 8.03 t/ha, slightly above the control at 7.98 t/ha.
- Taxon
- cornZea mays subsp. mayse4
- Material
- hybrid OSSK 444e2
- Treatment
- Dotane4
- Outcome
- yield of corne4
- Direction
- higherinferrede4
- Value
- 8.03 t/hae4
- Qualifier
- 7.98 t/hae5
- Comparator
- control plote5
- Setting
- Stara Gunjae1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“In the area of Stara Gunja”
e2“hybrid OSSK 444 was sown”
e4“The yield of corn was 8.03 t/ha in treatment with Dotan, 8.44 t/ha in treatment with Dursban, and 8.72 t/ha in treatment with Counter”
e5“the lowest 7.98 t/ha was in control plot”
Claim · model-written summary
Corn treated with Dursban below-ground insecticide yielded 8.44 t/ha, above the control at 7.98 t/ha.
- Taxon
- cornZea mays subsp. mayse4
- Material
- hybrid OSSK 444e2
- Treatment
- Dursbane4
- Outcome
- yield of corne4
- Direction
- higherinferrede4
- Value
- 8.44 t/hae4
- Qualifier
- 7.98 t/hae5
- Comparator
- control plote5
- Setting
- Stara Gunjae1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“In the area of Stara Gunja”
e2“hybrid OSSK 444 was sown”
e4“The yield of corn was 8.03 t/ha in treatment with Dotan, 8.44 t/ha in treatment with Dursban, and 8.72 t/ha in treatment with Counter”
e5“the lowest 7.98 t/ha was in control plot”
Claim · model-written summary
Corn treated with Counter below-ground insecticide yielded 8.72 t/ha, above the control at 7.98 t/ha.
- Taxon
- cornZea mays subsp. mayse4
- Material
- hybrid OSSK 444e2
- Treatment
- Countere4
- Outcome
- yield of corne4
- Direction
- higherinferrede4
- Value
- 8.72 t/hae4
- Qualifier
- 7.98 t/hae5
- Comparator
- control plote5
- Setting
- Stara Gunjae1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“In the area of Stara Gunja”
e2“hybrid OSSK 444 was sown”
e4“The yield of corn was 8.03 t/ha in treatment with Dotan, 8.44 t/ha in treatment with Dursban, and 8.72 t/ha in treatment with Counter”
e5“the lowest 7.98 t/ha was in control plot”
Claim · model-written summary
Chemical control of western corn rootworm was not justified for now, given the low number of adults caught per plant.
- Taxon
- cornZea mays subsp. mayse0
- Outcome
- implementation of chemical preparationse4
- Qualifier
- for nowe4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Western Corn Rootworm (WCR) (Diabrotica virgifera virgifera Le Conte) is very important corn pest”
e4“for now, the implementation of chemical preparations”
Claim · model-written summary
Corn roots should be checked earlier to determine correct larval numbers and root damage.
- Taxon
- cornZea mays subsp. mayse0
- Outcome
- checking of corn rootse4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Western Corn Rootworm (WCR) (Diabrotica virgifera virgifera Le Conte) is very important corn pest”
e4“the checking of corn roots must be done earlier”
Claim · model-written summary
Investigations of this kind should continue in future seasons.
- Taxon
- cornZea mays subsp. mayse0
- Outcome
- This kind of investigationse4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Western Corn Rootworm (WCR) (Diabrotica virgifera virgifera Le Conte) is very important corn pest”
e4“This kind of investigations should be continuing in the future”
Claim · model-written summary
Western corn rootworm spread in Croatia from 1995 to 1999 over 12,750 km2.
- Taxon
- cornZea mays subsp. mayse0
- Interactor
- Diabrotica virgifera virgiferaDiabrotica virgifera virgiferae0pest
- Outcome
- spreade4
- Value
- 12,750 km2e4
- Setting
- Croatiae4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Western Corn Rootworm (WCR) (Diabrotica virgifera virgifera Le Conte) is very important corn pest”
e4“The pest was spread in Croatia from 1995 to 1999 on 12,750 km2”
The same questions in other papers
terbufos · yield · Zea mays (maize)Positive and negative results
1 paper in the same direction as this paper · 5 in the opposite direction
- negative
- no effect
- negative
3 papers more in this group
See all 7 papers →insecticide · Diabrotica virgifera virgifera · Zea mays (maize)Results differ
6 papers in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
- positive
4 papers more in this group
See all 8 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.