Some of the Principles Which Should Determine Compensation for the Use of Foods and Manures: A Lecture Delivered Before the Newcastle Farmers Club on February 26, 1898 (Classic Reprint) - Softcover

Robert Warington

Softcover

ISBN 10: 1333357192 ISBN 13: 9781333357191

Publisher: Forgotten Books, 2018

Synopsis

Excerpt from Some of the Principles Which Should Determine Compensation for the Use of Foods and Manures: A Lecture Delivered Before the Newcastle Farmers' Club on February 26, 1898

Even when the quantity of manure applied to the land is insufficient to entirely obliterate the visible effect of the residues of previous manuring, the return in the cr0p obtained from these residues may be considerably diminished in consequence of this subsequent manuring; and this will be especially the case when we have to do with a residue of farmyard, or other nitrogenous manure, and are growing not corn but green crops. To make myself clear I must remind you that green crops, as turnips or grass, may vary very much in composition. As an illustration let me take the swedes grown in the experimental rotation field at Botham sted. On one portion of this field the swedes have been grown for many years with superphosphate only. On another portion of the field a liberal nitrogenous manuring is applied with the superphosphate. In 1880 the super phosphate gave nearly 12 tons of swedes, and the mixed manure 22 tons. Analysis showed that 1 ton of swedes grown with nitrogenous manure contained one-half more nitrogen than 1 ton of swedes grown with superphosphate; the same quantity of soil nitrogen which would produce 3 tons of swedes with superphosphate alone would thus only yield 2 tons when high manuring was adopted. Thus under a generous treatment of the land, and especially with the growth of green crops, the apparent effect of residues of nitrogenous manure will be considerably diminished, and their effect will appear partly in an alteration in the composi tion of the subsequent crops instead of in an increase in their weight.

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Edition details

• Publisher: Forgotten Books
• Publication date: 2018
• Language: English
• ISBN 10: 1333357192
• ISBN 13: 9781333357191
• Binding: Paperback
• Number of pages: 50