BLAINSKI, Everton.; GUIMARÃES, Rachel M. L.; AZEVEDO, Tedson L. F.; GONÇALVES, Antônio C. A.; BERTONHA, Altair.; FOLEGATTI, Marcos V.
Resumen:
Soil water management by irrigation has been one of the most important factors to
increase crop yield. To look for the economic viability of the process, the use of the several input,
particularly of the water, should be done with high efficiency levels. The objective of this research was
to evaluate the effect of the concentration of a hydrogel polymer on the water retention characteristics
of a substract. Water retention curves were obtained for a mixture of sand with hydrogel polymer at
0%, 15%, 30% and 45% concentration to hydrogel polymer on substract. After saturation of the
substract, the process of moisture measure began. It was verified that the water retention increased as
the concentration of the hydrogel polymer in the substract increased. The hydrogel polymer, at 45%
concentration, increased the water retention, by 136%, when compared to the substract without
hydrogel polymer (control treatment), for matric potential the 10 cm.c.a.
