TY  - SER
AU  - Altieri S., Miguel Angel
AU  - Francis, Charles Andrew
AU  - Schoonhoven, Aart van
AU  - Doll, Jerry D.
TI  - A review of insect prevalence in maize (Zea mays L.) and bean (Phaseolus vulgaris L.) polycultural systems
AV  - 60490 
KW  - Zea mays
KW  - Phaseolus vulgaris
KW  - Maize
KW  - Cropping systems
KW  - Pests of plants
KW  - Empoasca kraemeri
KW  - Diabrotica balteata
KW  - Spodoptera frugiperda
KW  - Cultural control
KW  - Crop yield
KW  - Timing
KW  - Colombia
KW  - Maíz
KW  - Sistemas de cultivo
KW  - Plagas de plantas
KW  - Control cultural
KW  - Rendimiento de cultivos
KW  - Elección de la época
KW  - Beans
KW  - Frijol
KW  - CIAT Autor
KW  - RJ
KW  - Protección de plantas - Aspectos generales
KW  - Thompson
KW  - Plagas de las Plantas
KW  - Protection of plants - General aspects
KW  - Articles in Refereed Journals
N2  - Tropical agroecosystems often include two or more crops arranged in diverse polycultural patterns. Experimental evaluation of the pest situation in polycultural systems was carried out in several field experiments at CIAT (Centro Internacional de Agricultura Tropical, Palmira, Colombia) with maize and beans in monoculture and polyculture. Beans grown as maize/bean polycultures had 26 percent fewer Empoasca kraemeri Ross and Moore adults than monoculture beans. Similarly the populations of Diabrotica balteata Le Comte were 45 percent less in polycultures. Spodoptera frugiperda (Smith) incidence as cutworm in maize was reduced 14 percent in polycultures. Also these systems had 23 percent less infestation of fall armyworm as whorl feeder. Date of planting affects pest interactions in these systems. For example, maize planted 30 and 20 days earlier than beans reduced leafhoppers on beans by 66 percent as compared to simultaneous planting. Fall armyworm damage on maize was reduced 88 percent when beans were planted 20 to 40 days earlier than the maize. Diversification of monocultural systems with other crops, especially non-host plants, seems to be one effective strategy in tropical pest management. Further research will provide a basis for incorporating practical pest control schemes into the most important intercropping systems in the tropics
ER  -