Effect of citronella, eucalyptus and citronellal compound oils on mycoflora and corn plant development
DOI:
https://doi.org/10.20873/jbb.uft.cemaf.v3n4.britoKeywords:
Zea mays, selecivity, toxicity and alelopathyAbstract
The aim of this study was to evaluate the effects of essential oils C. nardus, E. citriodora and citronellal compound of mycoflora associated germination and initial plant corn (Zea Mays) at doses of 5, 10 and 15% for all tests. The maize cultivar used was XGN5320 and experimental design was completely randomized. After application of defined doses, germination was evaluated in germitest role in BOD. The assessment of phytotoxicity was made in plants grown in pots with direct application on plants and the observed symptoms 48 and 96 hours after application. We also evaluated the size of shoots and roots. The dry matter was obtained after these parts remain in gases forced circulation of air. The effect on seed mycoflora was observed by the method Blotter test. The results showed that the oils used were not selective for corn plants, causing severe damage in the initial development of phytotoxicity of the same, with consequent reduction in dry mass and shoot length (P <0.05). The oils inhibited dramatically seed borne fungi, Aspergillum ssp inhibiting satisfactorily. and brought to incidence of Colletotrichum, Fusarium and Penicillium zero, with the highest dose (15%), indicating toxicity to these microorganisms. However, showed allelopathic activity, dramatically affecting seed germination.
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