THE RESULTS OF INVESTIGATIONS OF WCR (Diabrotica virgifera virgifera Le Conte) ATTACK ON THE AREA OF GUNJA IN 1999
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 inse...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Faculty of Agrobitechnical Sciences Osijek
2000-12-01
|
| Series: | Poljoprivreda |
| Subjects: | |
| Online Access: | http://poljoprivreda.pfos.hr/upload/publications/7_IVEZIC.pdf |
| _version_ | 1818903228505391104 |
|---|---|
| author | Marija Ivezić Emilija Raspudić Mirjana Brmež Dražen Džoić |
| author_facet | Marija Ivezić Emilija Raspudić Mirjana Brmež Dražen Džoić |
| author_sort | Marija Ivezić |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-12-19T20:48:13Z |
| format | Article |
| id | doaj.art-7d8e8b3a81d748ae8de57e874c64dbb6 |
| institution | Directory Open Access Journal |
| issn | 1330-7142 1848-8080 |
| language | English |
| last_indexed | 2024-12-19T20:48:13Z |
| publishDate | 2000-12-01 |
| publisher | Faculty of Agrobitechnical Sciences Osijek |
| record_format | Article |
| series | Poljoprivreda |
| spelling | doaj.art-7d8e8b3a81d748ae8de57e874c64dbb62022-12-21T20:06:10ZengFaculty of Agrobitechnical Sciences OsijekPoljoprivreda1330-71421848-80802000-12-0162THE RESULTS OF INVESTIGATIONS OF WCR (Diabrotica virgifera virgifera Le Conte) ATTACK ON THE AREA OF GUNJA IN 1999 Marija Ivezić0 Emilija Raspudić1Mirjana Brmež2Dražen Džoić3Sveučilište Josipa Jurja Strossmayera u Osijeku, Poljoprivredni fakultet, Zavod za zaštitu biljaSveučilište Josipa Jurja Strossmayera u Osijeku, Poljoprivredni fakultet, Zavod za zaštitu biljaSveučilište Josipa Jurja Strossmayera u Osijeku, Poljoprivredni fakultet, Zavod za zaštitu biljaMPŠ, Odjel granične inspekcije za zaštitu bilja GunjaWestern 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.http://poljoprivreda.pfos.hr/upload/publications/7_IVEZIC.pdfWCRDiabrotica virgifera virgiferapheromone trapsyellow sticky trapscontrol with soil insecticides |
| spellingShingle | Marija Ivezić Emilija Raspudić Mirjana Brmež Dražen Džoić THE RESULTS OF INVESTIGATIONS OF WCR (Diabrotica virgifera virgifera Le Conte) ATTACK ON THE AREA OF GUNJA IN 1999 Poljoprivreda WCR Diabrotica virgifera virgifera pheromone traps yellow sticky traps control with soil insecticides |
| title | THE RESULTS OF INVESTIGATIONS OF WCR (Diabrotica virgifera virgifera Le Conte) ATTACK ON THE AREA OF GUNJA IN 1999 |
| title_full | THE RESULTS OF INVESTIGATIONS OF WCR (Diabrotica virgifera virgifera Le Conte) ATTACK ON THE AREA OF GUNJA IN 1999 |
| title_fullStr | THE RESULTS OF INVESTIGATIONS OF WCR (Diabrotica virgifera virgifera Le Conte) ATTACK ON THE AREA OF GUNJA IN 1999 |
| title_full_unstemmed | THE RESULTS OF INVESTIGATIONS OF WCR (Diabrotica virgifera virgifera Le Conte) ATTACK ON THE AREA OF GUNJA IN 1999 |
| title_short | THE RESULTS OF INVESTIGATIONS OF WCR (Diabrotica virgifera virgifera Le Conte) ATTACK ON THE AREA OF GUNJA IN 1999 |
| title_sort | results of investigations of wcr diabrotica virgifera virgifera le conte attack on the area of gunja in 1999 |
| topic | WCR Diabrotica virgifera virgifera pheromone traps yellow sticky traps control with soil insecticides |
| url | http://poljoprivreda.pfos.hr/upload/publications/7_IVEZIC.pdf |
| work_keys_str_mv | AT marijaivezic theresultsofinvestigationsofwcrdiabroticavirgiferavirgiferaleconteattackontheareaofgunjain1999 AT emilijaraspudic theresultsofinvestigationsofwcrdiabroticavirgiferavirgiferaleconteattackontheareaofgunjain1999 AT mirjanabrmez theresultsofinvestigationsofwcrdiabroticavirgiferavirgiferaleconteattackontheareaofgunjain1999 AT drazendzoic theresultsofinvestigationsofwcrdiabroticavirgiferavirgiferaleconteattackontheareaofgunjain1999 AT marijaivezic resultsofinvestigationsofwcrdiabroticavirgiferavirgiferaleconteattackontheareaofgunjain1999 AT emilijaraspudic resultsofinvestigationsofwcrdiabroticavirgiferavirgiferaleconteattackontheareaofgunjain1999 AT mirjanabrmez resultsofinvestigationsofwcrdiabroticavirgiferavirgiferaleconteattackontheareaofgunjain1999 AT drazendzoic resultsofinvestigationsofwcrdiabroticavirgiferavirgiferaleconteattackontheareaofgunjain1999 |