Evaluación de tuza de maíz tostada como sustratos para la producción de plantas de lechuga

Abstract

This studio was carried out in the Tungurahua Province, Ambato canton, Montalvo Parish, Luz de America Town, in the Segundo Curay engineer’s property, its coordinates are: 01⁰24'00" S, longitude: 78⁰23’00" W, and to 2600 meters above sea level. This searching was carried out in order to assess the roasted corncob as a substrate to produce lettuce plants (Lactuca sativa), to establish the efficacy of roasted corncob as a substrate for the production of lettuce plants (Lactuca sativa), to determine the characteristics of chemical of the substrate made with corncob. The studied treatments were the followings: T1 fine corncob 75% + Humus 25%, T2 fine corncob 75% + Pomina 25%,: T3 fine corncob 75% + husk 25%, T4 fine corncob 75 % + Humus 25%, T5 thick corncob 75% + Pomina 25%, T6 thick corncob 75% + husk 25%, T7 fine corncob 100%, T8 thick corncob 100% and finally T9 that is Kekilla 100%. The analyzed variables in the estudio were: analysis of substrates, germinative vigor, percent of germination, stem thickness, height of plant, root volume, days to harvest and leaf analysis. The highest accumulation of nutrients in the substrate at the end of the essay is seen in the treatment T6 thick corncob 75% + Humus 25% with a percent of Nitrogen of 2.68% available for the adequate development of the seedling in its definitive site. The highest percent of germination at 15 days after sowing is the T9 commercial substrate Kekilla treatment with 97,43% it was getting a germination of almost 99% which is the acceptable in this variable, then it found the treatment T6 thick corncob 75% + Humus 25% with an average of 88,85%. For the root volume it could be seen that the first place is for the commercial substrate Kekilla T9 treatment with an average of 1.84 cc, for the height of the plant, the T9 Treatment is in the first place the commercial substrate Kekilla with 12,73 cm, then the treatment T6 thick corncob 75% + Humus 25% with 11,35%, being statistically equal, but mathematically different.