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Damage by fall armyworm Spodoptera frugiperda (J.E. Smith), Southwestern corn borer (Diatraea grandiosella) Dyar and sugarcane borer (Diatraea saccharalis) Fabricius on maize in relation to seed treatment with selected insecticides in the fields

By: Kumar, H.
Contributor(s): Mihm, J.A [coaut.].
Material type: materialTypeLabelArticlePublisher: 1996Subject(s): Central America | Chemical control | Diatraea | Insecticides | Pest control | Pest control methods | Pest resistance | Plant response AGROVOC | Research projects | South America | Spodoptera frugiperda | Varieties | CIMMYT | Zea mays AGROVOC | Hybrids AGROVOC In: Maydica v. 41, no. 3, p. 235-239Summary: In central and south America, early phenological stage of maize is attacked by several pests including Southwestern Corn Borer (SWCB), Diatraea grandiosella (Dyar) Sugarcane Borer (SCB), Diatraea saccharalis Fabricius (Lepidoptera:Pyralidae) and Fall armyworm (FAW), Spodoptera frugiperda (J.E. Smith) (Lepidoptera:Noctuidae). In order to evaluate maize germplasm for resistance against one insect species, it is often necessary to grow the crop with insecticide - treated seeds to protect it against other species. The objective of this study was to determine whether maize plants grown with insecticide - treated seeds would affect damage by SCB, SWCB and FAW. Three different experiments were conducted. In the first experiment, a susceptible (Ki3 x CML131) and a resistant (CML67 x CML135) hybrid were grown with seeds treated with tile following insecticides: Semevin, Carbofuradan, Gaucho, Semevin + Carbofuradan, Semevin + Gaucho and Carbofuradan + Gaucho @ 350 g a.i/ha or 700 g a.i/ha. When 30 days - old plants were infested with neonate larvae of SWCB and FAW, the plants did not inhibit larval feeding by the two species of the insects except when the seeds were treated with Semevin + Carbofuradan. The resistant hybrid suffered less damage than the susceptible hybrid. In the second experiment, the plants of four hybrids grown with the insecticides - treated seeds were clearly distinguished into susceptible (Ki3 x CML131 and Ki3 x CML69) and resistant (Ki3 x CML139, and CML67 x CML135) hybrids under artificial infestation by FAW, SWCB and SCB. The inbred lines CML67 and CML131, grown with Carbofuradan + Gaucho or Semevin + Gaucho - treated seeds, were consistently distinguished into resistant (CML67) and susceptible (CML131) line under artificial infestation by FAW, SWCB and SCB. The observations show that the seedlings of the maize plants grown with insecticide - treated seeds remain free of undesirable wild species without interferring with damage to plants by target species of the insects. These results would be useful for screening of maize germplasm against the target species in locations where maize is attacked by several species of wild insectsCollection: CIMMYT Staff Publications CollectionCollection: Serials Collection
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Peer-review: Yes - Open Access: Yes|http://science.thomsonreuters.com/cgi-bin/jrnlst/jlresults.cgi?PC=MASTER&ISSN=0025-6153

In central and south America, early phenological stage of maize is attacked by several pests including Southwestern Corn Borer (SWCB), Diatraea grandiosella (Dyar) Sugarcane Borer (SCB), Diatraea saccharalis Fabricius (Lepidoptera:Pyralidae) and Fall armyworm (FAW), Spodoptera frugiperda (J.E. Smith) (Lepidoptera:Noctuidae). In order to evaluate maize germplasm for resistance against one insect species, it is often necessary to grow the crop with insecticide - treated seeds to protect it against other species. The objective of this study was to determine whether maize plants grown with insecticide - treated seeds would affect damage by SCB, SWCB and FAW. Three different experiments were conducted. In the first experiment, a susceptible (Ki3 x CML131) and a resistant (CML67 x CML135) hybrid were grown with seeds treated with tile following insecticides: Semevin, Carbofuradan, Gaucho, Semevin + Carbofuradan, Semevin + Gaucho and Carbofuradan + Gaucho @ 350 g a.i/ha or 700 g a.i/ha. When 30 days - old plants were infested with neonate larvae of SWCB and FAW, the plants did not inhibit larval feeding by the two species of the insects except when the seeds were treated with Semevin + Carbofuradan. The resistant hybrid suffered less damage than the susceptible hybrid. In the second experiment, the plants of four hybrids grown with the insecticides - treated seeds were clearly distinguished into susceptible (Ki3 x CML131 and Ki3 x CML69) and resistant (Ki3 x CML139, and CML67 x CML135) hybrids under artificial infestation by FAW, SWCB and SCB. The inbred lines CML67 and CML131, grown with Carbofuradan + Gaucho or Semevin + Gaucho - treated seeds, were consistently distinguished into resistant (CML67) and susceptible (CML131) line under artificial infestation by FAW, SWCB and SCB. The observations show that the seedlings of the maize plants grown with insecticide - treated seeds remain free of undesirable wild species without interferring with damage to plants by target species of the insects. These results would be useful for screening of maize germplasm against the target species in locations where maize is attacked by several species of wild insects

English

R96ANALY|1

CIMMYT Staff Publications Collection

Serials Collection

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