CE:1416 CF: cag114162103
RESEARCH ARTICLE
Effects ofbiological resources and natural products on Sclerotium rolfsii Sacc. in common bean
Efecto de medios biológicos y productos naturales sobreSclerotium rolfsii Sacc. en frijol común
Dienelys Hernández Pérez1, Manuel Díaz Castellanos1, Reinaldo Quiñones Ramos1, Ramón Santos Bermúdez2, Nayanci Portal González3, Lidcay Herrera Isla1
1Facultad de Agronomía. Universidad Central Marta Abreu de Las Villas. Carretera a Camajuaní km 5 ½. Santa Clara, Villa Clara, Cuba, CP 54830.
2Facultad de Ingeniería Agropecuaria. Universidad Estatal Amazónica. Campus principal km 2 ½ vía a Napo. Puyo. Ecuador. CP 160150.
3Facultad de Ciencias Agrícolas. Universidad de Ciego de Ávila. Carretera a Morón km 9 ½. Cuba. CP 69450.
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ABSTRACT
Several experiments were developed under laboratory, semi controlled and field conditions to assess effectiveness of biological resources and natural products on protecting common bean plants against disease caused by S. rolfsii. Antagonist effect of P.aeruginosa, B. subtilis, B.cepacia and P.fluorescens rhizobacterias was found. While the first two completely inhibited the in vitro growth of the pathogen the last two just did in an 80.72% and 40.97% respectively using the dual culture method. Lower levels of inhibition for each case were recorded by the use of the method of the wells. For evaluations under controlled conditions and field, in addition to the previously mentioned biological means, the effect of natural products Fungend and Chitosan in the protection of bean plants was evaluated. Treatments with P. fluorescens, P. aeruginosa and B. subtilis were similar to those achieved with chemical control (TMTD 80% PH). Affections by the pathogen were reduced for both the application of biological resources as well as natural product, in any case diseased plants were lower than non-treated plants and similar to chemical control.
