Response of tomato grown in hydroponics with nutrient solutions in substrate-coir vermicompost
DOI:
https://doi.org/10.29312/remexca.v5i5.903Keywords:
polar and equatorial diameter of fruit, greenness index, yieldAbstract
The aim of this study was to determine the effect that induces Steiner nutrient solution 100% of nutrient concentration, as well as variations in the concentration of the same (25 and 50%) of the concentration, compared with the control (water only ), applied in mixtures of organic substrates based on vermicompost and coir in proportions v: v 25:75, 50:50 and 75:25. With the Imperial hybrid tomato grafted Multifort® ball type, indeterminate growth during the 2011-2012 crop seasons. A factorial experiment was established 4 x 3 on a completely randomized experimental design with four replications. The study variables were greenness index (determined with SPAD 502), polar and equatorial diameter of fruit, and performance as rated by the official standard NMX-FF-031-1997. Increases were observed in the greenness index of 43.1, 48.7 and 55.8% with the solutions at 25, 50 and 100% of the nutritional 150 DAT (days after transplantation) compared with plants irrigated with water concentration; the equatorial diameter of the fruit had increases of 34.3-39.3% in the first cluster, compared to the fruits in the control, in the second cluster were of 55.8-60.2%, and the third of 360.8-412.7%; the polar diameter of the third cluster of fruits increased 308.6, 334.4 and 324.8% in the respective solutions at 25, 50 and 100%; while solutions with the same total return is expressed in increments of 295.0, 378.2 and 394.7%, but the best responses occurred where solutions were applied at 50 and 100%.
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