Laboratory Manual for Soil Physics
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In our eReader you can find the full English version of the book. Read Laboratory Manual for Soil Physics Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book Laboratory Manual for Soil Physics
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32 PRACTICE 15 Determination of Humus in Soils.
Weigh out five or ten grams of water-free soil, the amount taken depending upon the amount of humus in the soil. Plase in filter and leach out the lime and magnesia with dilute hydrochloric acid. * When the lime is all leached out, as shown by testing the filtrate with ammonia and ammonium oxalate, wash out the hydrochloric acid with distilled water. Dry the soil and filter paper in an oven at 100° C. And put in a wide-mouthed bottle, carefully ...measure and add 150 cc. To 300 cc. Of dilute ammonia, the amount depending upon the richness of the soil in humus. Shake for about three hours. Filter. Evapor- ate 50 cc. Or 100 cc. Of filtrate to dryness. Dry at 100° C, weigh, ignite and weigh again. The loss in weight is the humus. Calculate from the part evaporated the total amount of humus and express in percent of the water-free soil.
Of what benefit is a large amount of humus?
If an acre seven inches of soil weighs 2, 000, 000 pounds, how many tons of humus per acre in the soil with which you are working?
What to read after Laboratory Manual for Soil Physics?
You can find similar books in the "Read Also" column, or choose other free books by Jeremiah George Mosier to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
.
32 PRACTICE 15 Determination of Humus in Soils.
Weigh out five or ten grams of water-free soil, the amount taken depending upon the amount of humus in the soil. Plase in filter and leach out the lime and magnesia with dilute hydrochloric acid. * When the lime is all leached out, as shown by testing the filtrate with ammonia and ammonium oxalate, wash out the hydrochloric acid with distilled water. Dry the soil and filter paper in an oven at 100° C. And put in a wide-mouthed bottle, carefully ...measure and add 150 cc. To 300 cc. Of dilute ammonia, the amount depending upon the richness of the soil in humus. Shake for about three hours. Filter. Evapor- ate 50 cc. Or 100 cc. Of filtrate to dryness. Dry at 100° C, weigh, ignite and weigh again. The loss in weight is the humus. Calculate from the part evaporated the total amount of humus and express in percent of the water-free soil.
Of what benefit is a large amount of humus?
If an acre seven inches of soil weighs 2, 000, 000 pounds, how many tons of humus per acre in the soil with which you are working?
What to read after Laboratory Manual for Soil Physics?
You can find similar books in the "Read Also" column, or choose other free books by Jeremiah George Mosier to read onlineMoreLess
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