Efecto de enmiendas al suelo para prevenir la marchitez bacteriana (Ralstonia solanacearum E. F. Smith) en el cultivo de tomate (Lycopersicon sculentum Mill)

Abstract

Effects of amendments the soil for prepare the bacterial wilt (Ralstonia solanacearum E. F. Smith) in the tomato cultivation (Lycopersicon sculentum Mill). The effect of three amendmets were investigated on wilt caused by bacteria name Ralstonia solanacearum E. F. Smith; this established in the Experimental Station and Practices in the Agronomy Science Campus, in the University of El Salvador; lasted one year between july 2012 to july 2013; it carried out in two fases. The first was in the lab and consisted of aisolating, characterizing and preparing the bacteria inoculus and the second of campus that consisted in in the saw, applications of amendments, and management of crops. The factor of study was established by the amendments and treatments in different doses as follow: T1: Calcium Sulfate (CaSO4H2O) 9, gf .cube, T2: ashes 112 gf. cube. T3: ashes 170gf. cube T4: Bocashi 170 gf. cube, T5 Bocashi 250 gf. cube. And T6: Gentamycin Sulfate and Oxitetracicline (Agri- Gent®) 15 gf. cube and trail treatment with no application; measuring within the variable incidence average, severity grade and Under the Disease Progress Curve (AUDPC). To analize the data, an stadistic desing was applied randomized complete array and whem they showed significative effects were put under stadistic test Tukey, all them with a level of significance (0.01) supported on SAS v 8.5 program. Showing better effects for the variable severity grade the treatmen 5 (bocashi 6 ounce for cube) with a mean 1.0. For variable of incidence and area under the disease progress curve of illness T2 (ashes 4 ounce for cube) with a mean 12.5% and 0.75 unites of diseases respetivity. For analysis the proposed methodology was applied International Maize and Wheat Improvement Center (CYMMIT) and its modification showing the best relationship between benefit-cost the T2.