Comparative Study of the Leachates from Syngonium podophyllum using Different Fertilization Techniques and Nitrogen Forms

The objectives of this article were to analyze the evolution of the nutrient parameters of the leachates collected from Syngonium podophyllum var. Silver plants cultivated for 20 weeks in a buried greenhouse with four methods of fertilization. The treatments were T1, standard liquid feeding (SLF) [7.0 mmol L−1 nitrate (NO3 −) nitrogen (N), 0.3 mmol L−1 phosphorus (P), and 3.5 mmol L−1 potassium (K)] after transplanting; T2, liquid feeding soluble fertilizer (LFSF) [6.9% NO3 − N, 11.1% ammonium (NH4 +) N stabilized by 3,4-dimethylpyrazole phosphate, 8.0% P2O5, and 14.0% K2O] after transplanting; T3, controlled release fertilizer (CRF I) (7.4% NO3 − N, 8.6% NH4 + N, 8.0% P2O5, and 12.0% K2O) applied before planting and half concentration of SLF from 45 days after transplanting; and T4, controlled release fertilizer (CRF II) (8.5% NO3 − N, 7.5% NH4 + N, 8.0% P2O5, and 12.0% K2O) applied before planting and half concentration of SLF from 45 days after transplanting. Solution pH, electrical conductivity (EC), ...