Bottles to trees: Plastic beverage bottles as an alternative nursery growing container for reforestation in developing countries - Fig 4

<p><b>Arizona walnut seedling field relative height (A) and root collar diameter (B) growth (Means ± SE) following the first year of outplanting.</b> Container types: Coca-Cola^® bottles (Coke), Deepot^TM D27 containers (D27), polyethylene polybags (Polybag), and Sam’s Club^® bottles (Sams). Means (±SE) not accompanied by the same lowercase letters are significantly different (α = 0.05) according to Fisher’s LSD test.</p

Plastic bottles used as alternative containers for seedling production–photo by R.Heyduck.

<p>Plastic bottles used as alternative containers for seedling production–photo by R.Heyduck.</p

Mean estimates of shoot, root collar diameter (RCD), first-order lateral roots (FOLR), and overall root, and total tree morphological parameters for Afghan pine seedlings in August and November sampling periods.

<p>Mean estimates of shoot, root collar diameter (RCD), first-order lateral roots (FOLR), and overall root, and total tree morphological parameters for Afghan pine seedlings in August and November sampling periods.</p

Effects of root spiraling prevention method by opacity treatment combinations on algae growth on inner container walls.

<p>The data were collected during the August 2013 destructive sampling period. The interaction between root spiraling prevention method and opacity treatments was statistically significant (<i>P</i> = 0.01). Abbreviations are: CB (control with black color), CC (control with clear color), CG (control with green color), RB (internal ridges with black color), RC (internal ridges with clear color), RG (internal ridges with green color), SB (side-slits with black color), SC (side-slits with clear color), and SG (side-slits with green color). Means (±SE) not accompanied by the same lowercase letters are significantly different (α = 0.05) according to Fisher’s LSD test.</p