Effect of Mixed Organic Fertilizer on Growth, Yield and Component Content of Saururus chinensis Baill in Paddy Field Cultivation

Abstract

This study was conducted to examine the effect of mixed organic fertilizer (MOF) application on the growth, yield, soil chemistry change, and bio-active component of Saururus chinensis Baill in paddy cultivation under organic cultivation practice. Saururus chinensis Baill were cultivated with five levels of MOF application including 50% treatment based on the nitrogen content of the soil test fertilization recommendation. The plant length increased with the increased MOF application, and the fresh weight of the above-ground part was the highest in the 100% MOF treatment and the rhizome was the highest in the 125% MOF treatment. Among soil chemistry, pH was lowered, and available phosphorus increased as the MOF application rate increased. Phosphorus and potassium contents in the leaves increased with the MOF rate. The bio-active component (quercetin) in the leaves also increased proportionally with the MOF rate, In the rhizome, the content of quercitrin showed an opposite pattern to the above-ground part. The MOF for obtaining the highest yield of Saururus chinensis Baill were 100% MOF for the above-ground part and 150% MOF for the rhizome.