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| Titel: |
Effect of the contamination with fuel oil on nodulation characters in the culture of frijol (Vigna unguiculata (L.) Walp) in two soils of the state of Monagas, Venezuela |
| Auteur: |
Jesús Rafael MÉNDEZ NATERA Carmen Felicita MUJICA BLANCO Fernando Benito PINO MORALES |
| Verschenen in: |
Revista científica UDO agrícola |
| Paginering: | Jaargang 5 (2005) nr. 1 pagina's 81-87 |
| Jaar: |
2005 |
| Inhoud: |
The objective of this work was to evaluate the effect of contamination with oil of two soils of the Monagas state on thenodulation characters in the bean crop (Vigna unguiculata (L.) Walp.). The soils, viz, El Tejero (Tipyc-kandiustults) andCaripito (Tipyc-haplustepts) were used. A split-plot design was used with four replications. The four levels of oilcontamination (0, 3, 6 and 9 %) were the main plots and the two soils were the subplots. The commercial inoculation withrizobia were not carried out. Harvest was made at 32 days after sowing. An analysis of variance was performed and thedifferences between treatments were detected by the Duncan’s multiple range test. A 5 % level was considered significant.The biggest nodule weight was obtained in the control (0 % of oil contamination) followed by 3 % oil contamination andthese two treatment overcame the nodule weight obtained at 6 and 9 % oil contamination being the two latter similar amongthem. At 0 and 3 % oil contamination, more nodules were produced in the Caripito soil than El Tejero one, having similarnumber of nodules both soils at 6 and 9 % oil contamination. At the El Tejero soil, there was more nodules in the control (0% ) than at 3, 6 and 9 % oil contamination and at the Caripito soil there was more nodules in the control followed by 3 % oilcontamination and this latter have more nodules than 6 and 9 % oil contamination, having the two latter similar numbers ofnodules. In conclusion, the nodule production was inhibited from 6 % oil contamination indicating that oil impedes thefixation of atmospheric nitrogen, therefore the association rizobia:legume is ineffective in highly polluted soils with oil. |
| Uitgever: |
Universidad de Oriente Press (provided by DOAJ) |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 62 van 185 gevonden artikelen
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