000			03359nab a22006737a 4500
001			39649
003			CO-PlCIA
005			20130510185029.0
040			_aCO-PlCIA _cCO-PlCIA
041			_aeng
050			_a60490
245			_aA review of insect prevalence in maize (Zea mays L.) and bean (Phaseolus vulgaris L.) polycultural systems
100			_aAltieri S., Miguel Angel
700			_aFrancis, Charles Andrew
700			_aSchoonhoven, Aart van
700			_aDoll, Jerry D.
008			120511t1978 000 0seng d
300			_a1:33-49
520			_aTropical 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 _9eng
650			_aZea mays _9eng
650			_aPhaseolus vulgaris _9eng
650			_aMaize _9eng
650			_aCropping systems _9eng
650			_aPests of plants _9eng
650			_aEmpoasca kraemeri _9eng
650			_aDiabrotica balteata _9eng
650			_aSpodoptera frugiperda _9eng
650			_aCultural control _9eng
650			_aCrop yield _9eng
650			_aTiming _9eng
650			_aColombia _9eng
650			_aZea mays _9spa
650			_aPhaseolus vulgaris _9spa
650			_aMaíz _9spa
650			_aSistemas de cultivo _9spa
650			_aPlagas de plantas _9spa
650			_aEmpoasca kraemeri _9spa
650			_aDiabrotica balteata _9spa
650			_aSpodoptera frugiperda _9spa
650			_aControl cultural _9spa
650			_aRendimiento de cultivos _9spa
650			_aElección de la época _9spa
650			_aColombia _9spa
653			_aBeans _9spa
653			_aFrijol _9spa
653			_aCIAT Autor _9spa
653			_aRJ _9spa
653			_aProtección de plantas - Aspectos generales _9spa
653			_aThompson _9spa
653			_aPlagas de las Plantas _9spa
653			_aPests of plants _9eng
653			_aProtection of plants - General aspects _9eng
773			_tField Crops Research (Netherlands) _d1978
998			_aFRIJOL
998			_aCATAL
998			_aBICIAT
653			_aArticles in Refereed Journals _9eng
942			_2lcc _cJA
999			_c88815 _d88815