Sulphate-supplemented nitrogen, phosphorus and potassium (NPKS) fertilizer was nanoformulated through ionic gelation of chitosan (CS) and tripolyphosphate (TPP) at pH value of 5.5 to afford a series of nanofertilizers. The CS-TPP nanoparticles and CS-TPP-NPKS nanofertilizers were engineered using different dose of CS (0.125, 0.25, 0.5 and 1%) and NPKS fertilizer (20, 40 and 60 ppm). These nanoparticles were characterized through particle size distribution, zeta potential, SEM, XRD, FTIR, EDX and ICP-MS. The results revealed CS-TPP-NPKS particles with size range of 220–530 nm, polydispersity index (PDI) value between 0.2–0.5 and positive zeta potential. A preliminary evaluation of these nanoparticles along with inorganic NPK and NPKS fertilizers were conducted under greenhouse condition using maize ( Zea mays L.) as a test crop. Findings from this study showed that inorganic NPKS (20:7:3:0.5) fertilizer, CS-TPP nanoparticles, and formulated NPKS nanofertilizers gave higher ...

中文翻译：

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硫酸盐补充的NPK纳米肥料及其对玉米生长的影响

通过在5.5的pH值下对壳聚糖（CS）和三聚磷酸盐（TPP）进行离子凝胶化，对添加了硫酸盐的氮，磷和钾（NPKS）肥料进行了纳米配方。CS-TPP纳米颗粒和CS-TPP-NPKS纳米肥料是使用不同剂量的CS（0.125、0.25、0.5和1％）和NPKS肥料（20、40和60 ppm）设计的。这些纳米颗粒通过粒度分布，ζ电位，SEM，XRD，FTIR，EDX和ICP-MS表征。结果显示CS-TPP-NPKS颗粒的尺寸范围为220-530 nm，多分散指数（PDI）值在0.2-0.5之间，且ζ电位为正。这些纳米颗粒以及无机NPK和NPKS肥料在温室条件下进行了初步评估，使用玉米（Zea mays L.）作为试验作物。