TITLE:
Water catchment with native species in the Brazilian Semiarid
AUTHORS:
João Vianey Fernandes Pimentel, Hugo Orlando Carvallo Guerra, Francisco Jardel Rodrigues da Paixão, Luciano F. Marques, Leandro do Vale, Francisca N. Brito
KEYWORDS:
Xerophytic; Xylopodium; Semiarid; Water Use Efficient
JOURNAL NAME:
Agricultural Sciences,
Vol.5 No.2,
February
14,
2014
ABSTRACT:
Xerophyticplants are
well adapted to the semiarid conditions because they have a high potential
for the use of rainwater. They can store it in their roots (xylopodiums). The
Amburanacearensis, commonly called Cumaru, native of the Brazilian semiarid, is
very important because of its multiple-use: good quality wood, active food
ingredient, perfume and medicine production. However,
its management is practically unknown. Aiming to know more about this
culture, an experiment was conducted to quantify the Cumaruwater needs,
evaluate its water-use efficiency and the capacity of roots to store water.
Five levels of water (0%, 25%, 50%, 75% and 100% of evapotranspiration) and five-plant spacing (0.20 × 0.20 m, 0.20 ×
0.10 m, 0.20 × 0.05 m, 0.10 × 0.10 m and 0.05 × 0.05 m) were tested, and the
results obtained analyzed statistically throughout F test. No influence of soil
water level and plant spacing in the moisture content of the whole plant, in
the aerial part or in the xylopodiums was observed. However, there was an effect
of the treatments on the water stored in the whole plant in the aerial part or
in the roots, per unit area. More than 80% of the water was stored in the
roots. The crop growing with the smaller spacing without irrigation was shown
to be quite efficient in using the rainwater, compared with traditional
cultures irrigated.