NPK application for the establishment of soils Stevia rebaudiana Bertoni Veracruz center
DOI:
https://doi.org/10.47808/revistabioagro.v2i1.240Keywords:
Estevia, Morita II, Ka’a-héeAbstract
In a Vertisol of Soledad de Doblado, Ver., an experiment was conducted to evaluate the dry matter production of stevia Morita II variety in its establishment phase, in response to the application of NP and K. We used a 4x4x4 factorial, randomized block with four replications to evaluate four doses of N (0, 300, 350 and 400 ppm), P (0, 3, 4 and 5 meq L-1) and K (0, 4, 5 and 6 Meq L-1). The useful experimental plot and were composed of 20 and 5 plants respectively. The sources used were: Mg (NO3) 2, H3PO4 (84% purity) and K2SO4. The treatments were applied weekly, starting at 30 days after transplantation (ddt), diluted in water, in the area of drip at a rate of 50 mL-1 plant. The harvest took place at 90 ddt. The response variables were: dry matter of leaf, stem diameter and plant height. To stem diameter and plant height did not find answer to any fertilization treatment. Dry matter production of leaf showed a significant response (p = 0.022) to nitrogen fertilization and no response to the application of P and K. Such behavior was attributed to the experimental site showed poor content of N and P and K levels higher than those required by the crop in establishment phase. No response was observed to indicate some level of interaction or synergism in the use of a combined dose of N, P and K.
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