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Prospodium lippiae (Speg.) Arth.-Berth (Basidiomycota, Heterobasidiomycetes, Uropyxidaceae) affects essential oil composition in Aloysia polystachya (Griseb.) lities have similar environmental conditions. The plant material was collected at the flowering stage. Voucher specimens are deposited in the herbarium of the Museo Botánico de Córdoba (CORD). Isolation of volatile componentsSteam distillation was carried out using 1 kg leaves in a Clevenger-type apparatus for 2 h. 9 The samples were analysed in triplicate. Gas ChromatographyThe essential oils were analysed with a Shimadzu GC-R1A gas chromatograph equipped with FID and a fused silica column (30 m × 0.25 mm i.d., 0.25 µm film thickness) coated with DB-5. The temperature of the column was programmed from 60°C to 240°C at 4°C/min. The injector and detector temperatures were 250°C. The carrier gas was He at a flow rate of 1 ml/min. Peak areas were measured by electronic integration. The relative amounts of the individual components were based on the peak areas obtained, without FID response factor correction. Programmed temperature retention indices of the compounds were determined relative to n-alkanes. 9 Additional GC analysis was performed using a Supelcowax-10 column (30 m × 0.25 mm i.d., 0.25 µm film thickness) with the same conditions as described above.

Purpose -The purpose of this paper is to evaluate the effects of two vermicompost and urea on basil (Ocimum basilicum L.) variety Catamarca INTA (wide leaf) seed production, observing the evolution of the inflorescence and seed coloration. Design/methodology/approach -Treatments consisted of 50 per cent vermicompost from rumen content: 50 per cent soil (RCV); 50 per cent vermicompost from rabbit manure: 50 per cent soil (RMV); urea 100 kg/ha and soil as control. On three dates the authors determined the total number of inflorescences, harvested inflorescences and number of whorls with black seeds. In the final cycle the authors determined the weight of 1,000 seeds and the number of harvested seeds. Findings -In general, vermicompost produced better results (po0,0001): the total number inflorescences and whorls with black seeds and the number of seeds produced were significantly higher in vermicompost compared with those under the urea and control treatments. There were no significant differences in the weight of 1,000 seeds. Social implications -The use of chemical fertilizers causes environmental pollution, produces negative effects on human health and contributes to the depletion of non-renewable natural resources. Originality/value -These renewable amendments (vermicompost) constitute a sustainable alternative to the use of urea for inflorescence production and mature basil seed production.

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