DOSE OF NUTRIENT SOLUTION APPLIED TO TOMATO SEEDLINGS AND ITS EFFECT ON FRUIT YIELD
The work consisted of two experiments: 1) development of seedlings in nursery stage and 2) fruit production. During the first experiment tomato seedlings Sun 7705 grew in trays with cavities of different sizes (30, 50 and 65 cm3). The plants in each size of cavity were separated into subgroups to apply fertigation, either organic or inorganic at different doses: 5, 25, 50 and 100% of nutriment concentration, and so there were 24 treatments with 9 replications each. As the dose of fertilization was higher the seedlings were bigger and there were no differences in plant size due to the volume of cavity trays. During the second experiment, 216 plants obtained from the treatments in nursery stage were established in soil in a plastic house and all them were fertigated by drip irrigation at 100% of nutrient concentration either organic or inorganic. Plants were grown for five months and the harvested fruits were classified in three categories: ≤100 g (small), 101-150 g (medium) and ≥150.1 g (large) and the total yield was recorded. Seedlings fertigated during the nursery stage with either organic or inorganic at 100% of nutrient concentration, reached the biggest size, had total yields from 3709 to 4571 g and 4173 to 4642 g, respectively, while plants fertigated either with organic or inorganic solution at 5% of nutriment concentration had yields from 2864.3 to 2964.1 g and 3284.8 to 3716.9 g, respectively. Plants that received Steiners universal solution at 100% of nutriment concentration had yield 10% higher than plants fertigated with organic nutrient solution at 100%.
Juárez-Hernández, C., Enríquez-del Valle, J.R., García-Verdugo, H., Villegas-Aparicio , Y., Velasco-Velasco, V.A. and González-Mejía, O. (2012). DOSE OF NUTRIENT SOLUTION APPLIED TO TOMATO SEEDLINGS AND ITS EFFECT ON FRUIT YIELD. Acta Hortic. 947, 255-260
fertilization, fruit yield, organic nutrition, Steiner's universal solution