Evaluación de tres bioestimulantes para el incremento de masa radicular y productividad en un cultivo establecido de fresa (Fragaria × ananassa)

Abstract

The investigation was carried of Mr. Salomón Lozada property, located in Constantino Fernández parish, La Libertad neighborhood, belonging to Ambato canton, Tungurahua province; Located to 12 km to Nonoccidental of Ambato canton, with altitude of 2 843 m.s.n.m. Geographic coordinates are: 01 12 '79 "south latitude and 78 38' 56" West longitude; with objective of: defining the best biostimulant (Rootex B1, Eneroot B2 and More Roots B3) and the best dose (1,25 g/l D1 and 2,50 g/l D2) for the increase root mass in Strawberry cultivation (Fragaria × ananassa), Albion variety; To more than, to perform the financial analysis of the treatments with the benefit-cost ratio (RBC). The treatments were seven (six with application of biostimulants plus one control). The experimental design of completely randomized blocks in 3 x 2 + 1 factorial arrangement, with four replications was used. The analysis of variance (ANOVA) was carried, according to the experimental design proposed, Tukey significance tests at 5%, to differentiate between treatments and biostimulants; And, tests of Significant Minimum Difference at 5% for the application dose factor. The financial analysis of the treatments was performed according to the cost-benefit methodology. With the application of More Roots (B3) biostimulant, statistically the best results were obtained, reaching a more developed root system, when observed, greater weight of the root system at 30 days (17,53 g) and at 45 days (29,92 g). Greater volume of the root system was also reached at 30 days (25,84 cc) and at 45 days (32,07 cc); The number of compound leaves per plant was increased at 60 days (24,51 leaves), consequently higher yields were obtained (8,70 kg/plot). Applying the biostimulants at the dose of 1,25 g/l (D1), produced the best results, both in the growth and development of the root system, and in the vegetative development of the plants, when greater weight of the root system was detected 45 days (28,73 g), as the highest volume at 30 days (24,54 cc) and at 45 days (30,75 cc), resulting in the best yields (7,68 kg/plot). From the financial analysis, it was concluded that the cost benefit ratio presented positive values, finding that the B3D1 treatment (biostimulant More Roots in doses of 1,25 g/l), reached the highest cost benefit ratio of 2,12, where Net benefits obtained were 2,12 times what was invested, being from the financial point of view the most profitable treatment.