Response of Cenchrus ciliaris L. (Buffel cv. Formidable), innoculated with Bradyrhizobium sp. and Trichoderma harzianum, under drought stress
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sp. in the establishment cut; absolute control and fertilized control), with eight repetitions per treatment. ANOVA analysis was performed and differences between means were determined according to LSD of Fisher. Dry weight of the aerial part was evaluated, as well as the inoculation efficiency index based on the dry weight of the aerial part, stem length, ear length, dry weight of the ear and inoculation efficiency index based on dry weight of the ear. It is concluded that treatments with superior results in the variables studied were: Trich. + Ho13. 15 d., especially in the inoculation efficiency index based on dry weight of the aerial part (108.5 %) and dry weight of the ear (131.3 %); Ho13 + Trich.15d., in the inoculation efficiency index based on dry weight of the ear (112.4 %) and Trichoderma, with 122.2 % in the inoculation efficiency index based on dry weight of the ear. The treatment in which the two microorganisms were combined in the
same period did not have a favorable effect on the plant, which suggests a possible antagonism between both. It is recommended to apply the treatment Trich. + Ho13.15 d. in agricultural practice under environmental conditions similar to those of this experiment.
Key words: Bradyrhizobium, Trichoderma, agricultural drought,
Cenchrus ciliaris L.
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