The behavior of Aphis gossypii and Aphis craccivora (Hemiptera: Aphididae) and of their predator Cycloneda sanguinea (Coleoptera: Coccinellidae) in cotton-cowpea intercropping systems
Document title: The behavior of Aphis gossypii and Aphis craccivora (Hemiptera: Aphididae) and of their predator Cycloneda sanguinea (Coleoptera: Coccinellidae) in cotton-cowpea intercropping systems
Journal: Anais da Academia Brasileira de Ciencias
Database: PERIÓDICA
System number: 000420615
ISSN: 0001-3765
Authors: 1
2
1
2
1
1
Institutions: 1Empresa Brasileira de Pesquisa Agropecuaria, Unidade de Controle Biologico, Campina Grande, Paraiba. Brasil
2Universidade de Sao Paulo, Escola Superior de Agricultura "Luiz de Queiroz", Piracicaba, Sao Paulo. Brasil
Year:
Season: Mar
Volumen: 90
Number: 1
Pages: 373-384
Country: Brasil
Language: Inglés
Document type: Artículo
Approach: Analítico, descriptivo
English abstract The intercropping is an important cultural practice commonly used in pest management. It is based on the principle that increased plant diversity in the agro-ecosystem can lead to reductions of pest populations in the crop. The current study aimed to assess the impact the colored fiber cotton-cowpea intercropped systems on Aphis gossypii and Aphis craccivora and on their predator Cycloneda sanguinea and the losses and the dispersion behavior of these aphids and their predator in these cropping systems. The experiment had a randomized block experimental design with two bioassays and four treatments. The number of apterous and alate aphids (A. gossypii) per cotton plant was 1.46 and 1.73 or 1.97 and 2.19 times highest in the solid cotton system than that found in the cotton-cowpea intercropped systems (S1) and (S2), respectively. On the other hand, the cotton-cowpea intercropped systems (S1 and S2) reduced, respectively, in 43% and 31% the number of apterousA. gossypiiper cotton plant compared to the control. Implementing cotton-cowpea intercropped system in the S1 scheme reduced A. gossypii infestation, favored the multiplication of C. sanguinea, and allowed obtaining heavier open bolls
Disciplines: Agrociencias
Keyword: Fitopatología,
Fitotecnia,
Insectos,
Algodón,
Caupí,
Cultivos asociados,
Insectos fitófagos,
Control biológico,
Depredadores,
Dinámica de poblaciones,
Cycloneda sanguinea,
Afidos,
Aphis gossypii,
Aphis craccivora,
Hemiptera
Keyword: Phytopathology,
Crop husbandry,
Insects,
Cotton,
Cowpea,
Intercrops,
Phytophagous insects,
Population dynamics,
Predators,
Cycloneda sanguinea,
Aphids,
Aphis gossypii,
Aphis craccivora,
Hemiptera
Full text: Texto completo (Ver HTML)