Evaluación de tres dosis de fertiriego y tres dosis de gallinaza en el rendimiento del cultivo establecido de mora (Rubus glaucus Benth) Tunshi – CER.

Abstract

The effect of three doses of fertigation and three doses of Ecoabonaza on the yield of blackberry (Rubus glaucus Benth) was evaluated at CER-TUNSHI. A randomized complete block design (RCBD) was used in a split-plot arrangement, where the large plot (A) corresponds to the fertigation doses (Commercial dose, High dose (plus 50 percent), Low dose (minus 50 percent) and water) and the sub-plot (B) to increasing doses of Ecoabonaza (0, 1,5 and 3 T.ha-1). The commercial dose corresponded in kg.ha-1 (330 N, 60 P2O5, 300 K2O, 74 Ca, 48 Mg, 48 S) which was increased and decreased by 50 percent and it was the high and the low dose, respectively. Yield was evaluated every week for five months and expressed in kg.plant-1 and subsequently in kg.ha-1. In addition, fruit quality variables were evaluated (flesh firmness, polar diameter and equatorial diameter of the fruit, weight of 100 fruits, flesh volume, Total Soluble Solids (TSS), Total Titratable Acidity (TTA) and Maturity Index (MI)). Finally, an economic analysis of the treatments was carried out using the Benefit-Cost ratio. The results showed that the highest cumulative yield (1.25kg.plant-1 or 3461,67kg.ha-1) was obtained with the high nutrient dose. In addition, the fruit showed on average: Firmness:3.1N; Polar diameter:29.9mm; Equatorial diameter:22.8mm; Fruit weight:5.8g; TSS:10 degrees Brix; ATT:2.11 percent; and it was of better quality when the fertigation doses were high and a Benefit-Cost of 1.20 was obtained. It is concluded that the yield and quality of blackberry showed a positive response to high doses of fertigation, but Ecoabonaza had no a major influence.