Frequência de irrigação e hidrogel no consumo hídrico e crescimento do maracujazeiro amarelo em lisímetro

Abstract

Yellow passion fruit (Passiflora edulis Sims) is cultivated in climate countries tropical and subtropical, with Brazil being the largest producer in the world, with the Northeast region contributing 62.30%. water consumption of yellow passion fruit without and with water-retaining polymer in a lysimeter. The treatments were distributed in randomized blocks, with four replications of two plants per plot, using the 2 x 3 factorial, referring to the soil without and with water-retaining polymer and three irrigation frequencies. The variables evaluated were plant height (AP), stem diameter (DC), number of productive branches (NRP), electrical conductivity of leached water (EC), daily water consumption (Chd), humidity in field capacity (Ucc), initial time (TiD) and final drain time (TfD). There was no interaction of the polymer and the frequencies the number of productive branches, on the other hand, the hydroabsorbent polymer influenced (p≤0.05) the NRP at 110, 140 and 180 days after transplanting. Thus, it is clear that these treatments with hydrogel® contributed to a release of water for the plants over time. The use of hydrogel becomes viable with the use of irrigation frequencies to the growth of yellow passion fruit (P. edulis), even with a decrease 63 days after transplanting in the diameter of the stem. The polymer is efficient in retaining and releasing water for the plants, keeping the lowest daily consumption in yellow passion fruit plants. The hydrogel becomes an indispensable product for agriculture, so further research is needed to make the cost-effectiveness of this input viable.