poster - International Conference of Agricultural Engineering

Table1. Morphological characteristics of Eucalyptus grandis seedlings, 100 days after
sowing, under different irrigation management during hardening.
Trat. H
(cm)
D
(mm)
SDM
(g)
RDM
(g)
TDM
(g)
LA
(m 2 )
LSW
(g m -2 )
T1 70.53 a 3.49 b 1.96 a 0.51 ab 2.47 a 0.0166 ab 101.30 a
T2 52.15 b 3.63 ab 2.03 a 0.59 a 2.62 a 0.0173 a 87.74 b
T3 48.95 b 3.79 a 1.83 ab 0.56 ab 2.39 ab 0.0182 a 84.45 bc
T4 51.25 b 3.59 ab 1.61 b 0.50 b 2.12 b 0.0142 c 82.06 bc
T5 50.95 b 3.46 b 1.56 b 0.50 b 2.06 b 0.0144 bc 73.43 c
CV 7.75 8.87 18.24 16.61 16.88 16,32 16.31
Means followed by same letters in the same column do not differ by the Tukey Test at 5% level of
significance. CV = coefficient of variation.
T1: Seedlings without suffering water stress (under continuous subirrigation), T2, T3, T4 and
T5: irrigated seedlings up to reaching a tension of the substrate water retention at -50, -100, -
500 and -1500 KPa, respectively.
4. Conclusion
It is concluded that water management influence on the quality of Eucalyptus grandis
seedlings, as it altered morphological characteristics. Although the greatest differences
occurred among the seedlings grown under continuous subirrigation and those which
suffered some level of stress during hardening.
Acknowledgements: This work was supported by CAPES (Coordenação de
Aperfeiçoamento de Pessoal de Nível Superior), a Brazilian Government Agencies.
5. References
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