NUTRICIÓN Y Bacillus subtilis EN EL CONTROL DE MARCHITAMIENTO POR Fusarium spp. EN TOMATILLO (Physalis ixocarpa B.) EN SINALOA

Abstract

In the last years Sinaloa have limitation in the rind tomato production due certain kind of illness as withered or shed of the plants that are hazardous by pathogenic of the soil, mainly mushrooms of the genus Fossarium spp. which up to ocasion loss since a 30% until the total loss or the culture. This work was made with a efficient management of the fertilization in the production of the tomatillo. This work was made in three steps 1) laboratory trial 2) winter test quarters 3) field experiment. The first objective was to isolate the bacterium of the Bacillus spp. and made an antagonism test of the isolate bacterium and those who exist in a little bank in the Nutrición vegetal laboratory against the mushroom rootstalk (F. oxysporum and F. solani), a total of 50 Bacillus sp. isolate were selected that presented a great inhibition halo against each one of the previously mentioned mushroom; the five better isolates were consider as effectives for each mushroom which were proved in a winter quarters were a promoter effect of growing were observed in the plants treated with Bacillus spp in appearance with the wideness, in the variables: plant height, flowers number per plant, root volume and foliage dry weight. The field experiment was made in Juan José Rios city, in the experimental field INIFAP, the isolate Bacillus 35 were prove (for F. oxysporum) and Bacilus 31 (for F. solani), a experimental design were used with hazard blocks in a total of eight treatments two different supply of fertilization Calcium nitrate (NO3) and ammonium sulfate (NH4) 2SO4. To a estimate the effectiveness of treatments is estimated fruit yield in only two cuts on January 19 and February 8, 2011.