Essential Oil of Cymbopogon citratus on the Control of the Curvularia Leaf Spot Disease on Maize.

The Leaf Spot is becoming more common due to the culture expansion and the low resistance of the cultivated genotypes in tropical regions. Thus, the objective was to evaluate the fungitoxicity of the essential oil of upon the phytopathogen , causative agent of the Leaf Spot. There was realized pathogenicity tests of in maize plants, phytotoxicity of the essential oil of and gas chromatography attached, germination tests of the conidia, and of in vitro inhibition of .

The Efficiency of Noni (Morinda citrifolia L.) Essential Oil on the Control of Leaf Spot Caused by Exserohilum turcicum in Maize Culture.

The objective of this work was to evaluate the efficiency of noni essential oil on the control of , a causative agent of spot in maize culture. In the sanitary test 400 seeds were incubated using the blotter test method. For the transmissibility test, the fragments of damaged leaves of seedlings were removed and put into a potato, dextrose and agar (PDA) culture environment.