Aplicación de nutrientes foliares en los estados fenológicos del cultivo de mora (Rubus glaucus Benth) en la Granja Experimental Píllaro

Abstract

The study was carried out at National Agricultural Research Institute "INIAP", located in the Píllaro canton, Tungurahua province; 20 km north of the Ambato city, with an altitude of 2,779. The geographic coordinates are: 01 10' 33,6" South latitude and 78 33' 32,6" West longitude, in order to evaluate the influence of four foliar nutrients (boron, zinc, iron and calcium), applied in four phenological stages (at the beginning of yolk, at the beginning of flowering, in the mooring of the fruit, in the development of fruit), to increase the yield of the blackberry cultivation (Rubus glaucus Benth); more than performing the cost-benefit analysis of treatments. The treatments were four that received application of nutrients and a treatment that was not applied. The completely randomized blocks experimental design (CADB) was used, with five treatments and four repetitions. The variance analysis (ANOVA) and Tukey tests were performed at 5%. With the application of boron at the beginning of the yolk, zinc at the beginning of flowering, iron in fruit mooring, calcium in fruit development plus farmer management (T1), the best results were obtained, as a greater number of production centers were observed (26,00), with the best number of fruits harvested per branch (7,25). The fruits had a greater polar diameter (2,52 cm) and an equatorial diameter (2,91 cm), pulp pressure of 1,81 lb. of pressure, with greater weight (8,36 g), so that the better yields (5,45 kg/plant). From an economic analysis, it is concluded that the treatment that was applied boron at the beginning of the yolk, zinc at the beginning of flowering, iron in fruit mooring, calcium in fruit development plus the farmer management (T1), reached the highest cost benefit ratio of 0,57, where the net benefits obtained were 0,57 times what was invested, being from the economic point of view the most profitable treatment.