. Bulletin. Agricultural experiment stations -- United States; Agriculture -- United States. 65 This fxperiinent has a direct practical licarin<T on the question of goil ventilation. Soil air is essential to the life uf nitrifying and other bacteria which develop fertility. Other things equal, the more readily soil will allow air to circulate through it, the more favorable conditions will Ije for t!u' formation of plant • l-'iii. 1-3.—Apparatus U< deterniiiiu the ratt- uf tluw ni air thnjugh siiil<. ExperhiH'ut No. 7. EFFECT OF MULCHES OX EVAI'OKATIOX OF WATEli KKOM SOILS. The
. Bulletin. Agricultural experiment stations -- United States; Agriculture -- United States. 65 This fxperiinent has a direct practical licarin<T on the question of goil ventilation. Soil air is essential to the life uf nitrifying and other bacteria which develop fertility. Other things equal, the more readily soil will allow air to circulate through it, the more favorable conditions will Ije for t!u' formation of plant • l-'iii. 1-3.—Apparatus U< deterniiiiu the ratt- uf tluw ni air thnjugh siiil<. ExperhiH'ut No. 7. EFFECT OF MULCHES OX EVAI'OKATIOX OF WATEli KKOM SOILS. The cylinders (tig. 16) are IS inches deej) by 4 inches in diameter, and are tilled with tirst bottom S(jil from the Ohio State University faruL The compacting. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States. Office of Experiment Stations. Washington : G. P. O.
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