Figure 3 | Scientific Reports

Figure 3

From: Effects of foliar application of humic acid extracts and indole acetic acid on important growth indices of canola (Brassica napus L.)

Figure 3

Comparison of average foliar application of experimental treatments on shoot fresh weight (a), root fresh weight (b), shoot dry weight (c) and root dry weight (d) at treatment concentrations (levels 1, 2, 3 and 4 for HA, HA-N, HA-AS, HA-NSP and CHA treatments of 0, 200, 400 and 600 mg L−1 and 0, 10–6, 10–5 and 10–4 molar IAA). Different letters in each figure show significant difference at p ≤ 0.05 by Duncan multiple range test. HA, HA extracted from vermicompost without enrichment; HA-N, HA extracted from vermicompost enriched with 1% nitrogen; HA-NSP, HA extracted from vermicompost enriched with 1% nitrogen, 1% sulfur, and 1% phosphorus; HA-AS, HA extracted from vermicompost enriched with Azotobacter chroococcum (21Az) + Pseudomonas fluorescens (Ps 59); CHA, Commercial humic acid; IAA, Indole-3-acetic acid (IAA).

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