Abstract
Integrated pest management (IPM) module was developed and evaluated for transgenic Bt cotton during 2007–08 and 2008–09 at Dharwad and its performance was compared with the Bt grown under recommended plant protection and non -Bt with integrated pest management. In integrated pest management modules for both Bt as well as non-Bt cotton hybrids, included use of imidacloprid treated seeds, two sprays with imidacloprid (70 WS) and acetamiprid (20 SP) for sucking pest complex, trap cropping with okra, Abelmoschus esculentus (L.) Monech, spraying of 5% neem, Azardicta indica (L.) Juss seed kernel extract, detopping of shoot tip at 80 days after sowing, installation of pheromone traps and need-based application of insecticides for bollworm management. Recommended plant protection module for Bt involved only selective insecticides for sucking pests and bollworms. Results indicated low population of sucking pests in Bt integrated pest management, followed by non-Bt and Bt recommended plant protection. Bt integrated pest management registered 0.22 to 0.30 larvae of Helicoverpa armigera (Hubner)/plant compared to 0.32 and 0.29 larvae/ plant in recommended plant protection and 0.54 and 0.72 larvae/plant in non-Bt integrated pest management during 2007 and 2008, respectively. Fruiting body damage remained 3.24 and 3.57% in Bt integrated pest management as compared to 3.37 and 3.75% and 7.72 and 6.31% in Bt recommended plant protection and non-Bt integrated pest management, respectively. Similar trend of incidence was observed in case of pink bollworm across the genotypes and modules. Bt genotypes with integrated pest management resulted higher seed cotton yield of 3.13 and 2.59 tonnes/ha compared to 3.06 and 2.39 tonnes/ha in Bt recommended plant protection and 2.86 and 2.14 tonnes/ha in non-Bt with integrated pest management in 2007–08 and 2008–09, respectively. The net returns (` 69 970 and 61 350/ha) was more from Bt integrated pest management as compared to Bt recommended plant protection (` 67 676 and 55 403/ha) and non-Bt integrated pest management (` 61 155 and 43 633/ha) in both seasons
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Claims 6
Claim · model-written summary
Bt IPM had the lowest sucking pest population.
Verbatim
e0“Results indicated low population of sucking pests in Bt integrated pest management, followed by non-Bt and Bt recommended plant protection.”
t0“Bt cotton”
Claim · model-written summary
Bt IPM had fewer Helicoverpa armigera larvae per plant than comparison modules.
- Taxon
- Bt cottont0
- Treatment
- Bt integrated pest managemente0
- Interactor
- Helicoverpa armigera (Hubner)
_gusano_cogollero.png?width=60)
Helicoverpa armigerae0pest - Outcome
- larvae of Helicoverpa armigera (Hubner)/plante0
- Direction
- compared toe0
- Value
- 0.22 to 0.30e0
- Comparator
- recommended plant protectione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_gusano_cogollero.png?width=500)
Verbatim
e0“Bt integrated pest management registered 0.22 to 0.30 larvae of Helicoverpa armigera (Hubner)/plant compared to 0.32 and 0.29 larvae/ plant in recommended plant protection and 0.54 and 0.72 larvae/plant in non-Bt integrated pest management during 2007 and 2008, respectively.”
t0“Bt cotton”
Claim · model-written summary
Bt IPM had less fruiting body damage than comparison modules.
Verbatim
e0“Fruiting body damage remained 3.24 and 3.57% in Bt integrated pest management as compared to 3.37 and 3.75% and 7.72 and 6.31% in Bt recommended plant protection and non-Bt integrated pest management, respectively.”
t0“Bt cotton”
Claim · model-written summary
Pink bollworm incidence followed a similar trend across modules and genotypes.
- Taxon
- Bt cottont0
- Interactor
- pink bollworm
Pectinophora gossypiellae0pest - Outcome
- incidencee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Similar trend of incidence was observed in case of pink bollworm across the genotypes and modules.”
t0“Bt cotton”
Claim · model-written summary
Bt IPM produced higher seed cotton yield than comparison modules in both seasons.
- Taxon
- cotton
Gossypium hirsutume0 - Treatment
- integrated pest managemente0
- Outcome
- seed cotton yielde0
- Direction
- highere0
- Value
- 3.13 and 2.59 tonnes/hae0
- Comparator
- Bt recommended plant protectione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Bt genotypes with integrated pest management resulted higher seed cotton yield of 3.13 and 2.59 tonnes/ha compared to 3.06 and 2.39 tonnes/ha in Bt recommended plant protection and 2.86 and 2.14 tonnes/ha in non-Bt with integrated pest management in 2007–08 and 2008–09, respectively.”
t0“Bt cotton”
Claim · model-written summary
Bt IPM produced greater net returns than comparison modules in both seasons.
Verbatim
e0“The net returns (` 69 970 and 61 350/ha) was more from Bt integrated pest management as compared to Bt recommended plant protection (` 67 676 and 55 403/ha) and non-Bt integrated pest management (` 61 155 and 43 633/ha) in both seasons”
t0“Bt cotton”
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