Potential of dispersion of Tecoma stans and chemical attributes of some soils of the Paraná state
Titel:
Potential of dispersion of Tecoma stans and chemical attributes of some soils of the Paraná state
Auteur:
Edgard Alfredo Bredow Celina Wisniewski
Verschenen in:
Cerne
Paginering:
Jaargang 15 (2009) nr. 1 pagina's 27-34
Jaar:
2009
Inhoud:
This work correlated invasiveness characteristic (potential dispersion) of Tecoma stans (L.) Jussieu ex. Kunth(BIGNONIACEAE) known as a Yellow-Bell. Open field test was developed starting from stakes in vases with four different types soilsof the Paraná State, conduced to randomized block design with four treatments and five replications. The soils were analyzedregarding the pH, CTC, level of C, Al+³, macro and micronutrients, and content of sand, silt and clay. After 6 months the leaf area, dryweight of leaves and potential dispersion, calculated by given numeric values from 1 to 4 for phonological phases presented. Themacro and micronutrients content (except K and Fe) were high in all the soils. The correlations between dispersion potential and pHand the V% were positive and significant and with effective CTC, the Fe and clay content were negative. It was not found significantcorrelations between the dispersion potential and biomass or leaf area. Positive and significant correlations of biomass and leaf areawith macro (except P) and micronutrients (except Cu) apparently indicate that if the evaluation had been accomplished at the end of theflowering period of the species, nutritional relationships with the dispersion potential would be clearer, although it can be concludedthat the species has a preference for less acid soils.
Uitgever:
Universidade Federal de Lavras - UFLA (provided by DOAJ)
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