| Revista: | Acta agronómica |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000332694 |
| ISSN: | 0120-2812 |
| Autores: | Bharucha, Bhavna1 Padate, G.S1 |
| Instituciones: | 1The M.S. University of Baroda, Faculty of Science, Vadodara. India |
| Año: | 2010 |
| Volumen: | 59 |
| Número: | 2 |
| Paginación: | 228-235 |
| País: | Colombia |
| Idioma: | Inglés |
| Tipo de documento: | Artículo |
| Enfoque: | Experimental, aplicado |
| Resumen en español | Turdoides striatus es un pájaro insectívoro muy común en áreas subtropicales altamente predador de Helicoverpa armigera, un insecto perforador del fruto de varios cultivos, entre ellos Cajanus cajan (guandul). Para evaluar el rol de T. striatus en el control del insecto, en Baroda (estado de Gaujarat), India, se hicieron observaciones en campos sobre sus hábitos y frecuencia de aparición. Fueron muestreos al azar en 60 plantas con una frecuencia cada 1 – 2 minutos, durante 2 h en la mañana y un tiempo igual en la tarde. Se encontró una relación positiva entre el ataque de las larvas del perforador y la población de T. striatus. Se observó que el insecto prefiere las semillas de guandul sobre las de sorgo, un cultivo asociado incluido en los tratamientos |
| Resumen en inglés | Jungle babbler (Turdoides striatus), a widely spread sub-tropical insectivorous passerine is considered beneficial to agro-ecosystem, as they devour voraciously on insect matter especially Helicoverpa armigera, the gram pod borer, a notorious pest infesting and causing heavy loses to crops like pigeon pea (Cajanus cajan) which is a vital crop of semi-arid tropical and subtropical farming system, providing high quality vegetable protein. Helicoverpa is known to feed on flowers, pods, and seeds and is the most important biotic constraint affecting pigeon pea yields. Jungle babblers have a peculiar foraging style which helps expose the Helicoverpa larvae as well as pupae through various phenological stages of pigeon pea. For comparative assessment of their beneficial role and as a possible bio control agent, in Baroda city (State of Gaujarat), India, was studied, two crops of pigeon pea (insecticide treated and untreated (control) were selected. In both treated and control crops, the number of jungle babblers were maximum in pigeon pea fields during october and november in both small pod stage and large pod stage which had heavy infestation of Helicoverpa. Least number of birds was seen during the flowering stage in September. Later in treatment crop three applications of Dunnate and Monocrotophos insecticide spray was done after which the pest population decreased which is reflected in number of birds in the field, while the bird number in control crops grew since insecticide spray was not done and number of larvae increased with the stage of the crop. Along with the main crop pigeon pea, comparative study was also done to see the food preference by these birds in crops like sorghum, maize, cow pea and ploughed and unploughed fields. Maximum number of birds was seen in unploughed field and least in sorghum suggesting that Helicoverpa is preferred food over sorghum grains thus pigeon pea and sorghum can be used as mixed crops to protect the crop from heavy loss |
| Disciplinas: | Agrociencias |
| Palabras clave: | Insectos, Aves, Insectos fitófagos, Aves silvestres, Depredación, Turdoides striatus, Helicoverpa armigera, Cajanus cajan, Agroecosistemas |
| Keyword: | Agricultural sciences, Insects, Birds, Phytophagous insects, Wild birds, Predation, Turdoides striatus, Helicoverpa armigera, Cajanus cajan, Agroecosystems |
| Texto completo: | Texto completo (Ver PDF) |
