Effects of NPK Fertilization Dosages on the Growth and Nutrient Accumulation of Moringa oleifera

PurposeThe effects of different NPK dosages on the growth and nutrient absorption and accumulation of Moringa oleifera were studied, and the demand of M. oleifera for NPK nutrients was further studied, which provided the fertilization basis for cultivation of M. oleifera with the purpose of picking tender stems.

MethodThe pot experiment was carried out with the application of nitrogen, phosphorus and potassium as the experimental factors. The high and low levels were designed for each factor respectively. The pure nutrient dosage of nitrogen was 0.28 g and 0.12 g per kilogram of soil. The pure nutrient dosage of phosphorus was 0.33 g and 0.17 g per kilogram of soil. The pure nutrient dosage potassium was 0.33 g and 0.17 g per kilogram of soil, and no fertilizer treatment was used as control. The biomass, nutrient absorption and accumulation of M. oleifera under different treatments were compared.

ResultsThe dry matter accumulation in leaves and stems of M. oleifera with high nitrogen treatment was significantly higher than that of low nitrogen treatment (P<0.05), which was 1.47 times and 1.19 times higher than that. Among them, the highest total nutrient accumulation per plant was 19.02 g, and the highest dry matter accumulation of leave per plant was 103.53 g under the N_0.28P_0.33K_0.17 treatment.

ConclusionThe dosage of nitrogen significantly affected the growth of leave and tender shoots of M. oleifera, and N_0.28P_0.33K_0.17 was the best treatment under the experimental conditions.