id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
afs-5612	JAAKKOLA, A.; SIMOJOKI, A.	Effect of soil wetness on air composition and nitrous oxide emission in a loam soil	1998	15	.pdf	application/pdf	5939	310	70	Low O 2 concentration in soil air has been shown to retard plant growth independently of soil wet- ness in experiments where soil air composition is artificially regulated (e.g. Jaakkola et al. 1990). Cropping and irrigation lowered O 2 (minimum 3–7%) and raised CO 2 (maximum 9%) in soil air, but fertilization had no effect.	cache/afs-5612.pdf	txt/afs-5612.txt