Figure 6
From: Toxicity of NiO nanoparticles to soil nutrient availability and herbage N uptake from poultry manure

Redundancy analysis (RDA) of soil pH, mineral N (Nmin), nickel (SNi), available P (AP) and K (AK), microbial biomass carbon (MBC), nitrogen (MBN), nickel (MBNi), shoot nitrogen uptake (SNU), Ni uptake (SNiU), apparent N recovery (SANR), root nitrogen uptake (RNU), apparent N recovery (RANR) and Ni uptake (RNU) from control, poultry manure (PM), low dose NiONPs (NP1), intermediate (NP2) and high (NP3) amended PM. Treatments are signified as circle (Control), triangles (PM), stars (NP1PM), squares (NP2PM) and diamond (NP3PM). PC1 (56.3%) and PC2 (62.9%) explained most of the variations in the data with unit less individual scores.