Efecto de la tierra diatomea en la incidencia de Spodoptera frugiperda Smith. en el cultivo de maíz Zea mays L.

Abstract

THIS RESEARCH WAS CARRIED OUT ON THE PREMISES OF THE LAND OF THE FACULTY OF AGRONOMIC ENGINEERING OF THE TECHNICAL UNIVERSITY OF MANABÍ LOCATED AT KM 14 OF THE VIA PORTOVIEJO – SANTA ANA, PROVINCE OF MANABÍ – ECUADOR LOCATED GEOGRAPHICALLY AT 01°09' SOUTH LATITUDE AND 80°21' WEST LONGITUDE WITH A HEIGHT OF 60 MASL. THE OBJECTIVE OF THIS RESEARCH WORK WAS TO ESTABLISH THE EFFECT OF DIATOMEAN EARTH ON THE INCIDENCE OF SPODOPTERA FRUGIPERDA SMITH. IN CORN CULTIVATION Z. MAYS. THE TREATMENTS EVALUATED WERE DIATOMATIC EARTH AT DOSES OF 250 G AND 500 G, SPINETORAM AT 30 ML PER PLOT (100CC/HA) AND THE CONTROL. AN EXPERIMENTAL DESIGN OF RANDOM COMPLETE BLOCKS WAS USED, A NON-PARAMETRIC ANALYSIS OF VARIANCE WAS CARRIED OUT, IN ADDITION TO A PAIRED T TEST, USING THE INSFOSTAT STATISTICAL PROGRAM VERSION 2020. WHERE DIATOMEAN EARTH (SILICON DIOXIDE) HAD EFFECTS ON THE CONTROL OF FALLWORM IN CORN CROPS, WHICH WAS SIMILAR TO THE CHEMICAL INSECTICIDE SPINETORAM, IN RELATION TO THE EVALUATED VARIABLES OF LEAF AND HEAD DAMAGE AND CONTROL OF THE INCIDENCE OF LARVAE. AND THE COST IN CONTROL OF S. FRUGIPERDA IN CORN CROPS WAS HIGHER WITH THE SPINETORAM TREATMENT REGARDING DIATOMEAN EARTH, IN THE DRY PERIOD. SO IT IS RECOMMENDED TO CONDUCT MORTALITY STUDIES OF SPODOPTERA FRUGIPERDA LARVAE, WITH TD UNDER FIELD CONDITIONS IN RAINY SEASONS, LABORATORY AND ITS EFFECT ON THE POPULATION OF BENEFICIAL INSECTS, ASSOCIATED WITH CORN CULTIVATION. BUT THE ECOLOGICAL IMPORTANCE OF DIATOMATIC EARTH TREATMENT IS RESCUED FOR THE ENVIRONMENT AND HUMAN HEALTH, SINCE IT IS AN ORGANIC PRODUCT.