Influence of two phosphate-potassium solubilizing bacterial species on biomass and nitrate concentration on mustard greens (Brassica juncea (L.) Czernjaew) cultivated on acid sulfate soils

Two field trials were conducted to determine the effect of P-K solubilizing bacteria and nitrogen chemical fertilizer on growth, yield nitrate in leaf mustard greens Brassica juncea L.) cultivated acid sulfate soils. Eight bacterial strains composed 3 Acinetobacter calcoaceticus 5 Rhizobium sp., liquid directly watered into plant at stages [6, 12 21 days after planting] during vegetable cultivation, (60N – 40 P2O5 20 K2O) control (no-inoculation). The study revealed that eight have good characteristics as fixation, phosphate potassium solubilisation. Application concentration, increasing concentration greens. with strain NT4 NT30 strain, tropici N18 leguminosarum K35 soils (basal fertilizer: was best cultural practice because this model not only supported highest biomass, but also decreased