id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
ajoaa-669	Mazarura , Upenyu 	Exploring the Influence of Coal Rubble and Pine Bark Substrate Mixes on Germination, Spiral Rooting, Substrate Chemical and Physical Properties: Using Tobacco as Test Crop 	2013	13	.pdf	application/pdf	4568	182	55	The bulk density, total porosity, and aeration porosity, however, were highest with 100% coal rubble and decreased with decreasing coal rubble proportion while water holding porosity increased with decreasing coal proportion. Aeration porosity, total porosity, and bulk density were negatively correlated to germination (14 to 28 DAS) while water holding porosity was positively correlated.	cache/ajoaa-669.pdf	txt/ajoaa-669.txt