Manures and the principles of manuring

by Charles Morton Aikman

		Series 1.
	STANDARD MANURES.	Standard manures
		only.
Plots.
		Roots.		Leaves.
		Tons.	cwt.	Tons.	cwt.
1	Farmyard manure, 14 tons	16	6	2	17
2	Farmyard manure, 14 tons, and 3-1/2 cwt. superphosphate	4	9	1	8
3	Without manure, 1846, and since	4	9	1	8
4	3-1/2 cwt. superphosphate, 500 lb. sulphate of potash and 400 lb. mixed mineral manure	5	8	1	1
5	3-1/2 cwt. superphosphate	5	0	1	1
6	3-1/2 cwt. superphosphate, and 500 lb. sulphate of potash	4	9	0	18
7	3-1/2 cwt. superphosphate, 500 lb. sulphate of potash, and 36-1/2 lb. ammonium salts	5	17	1	8

TABLE IX.—continued

		Series 2.				Series 3.
	STANDARD MANURES	Standard manures,				Standard manures,
		and cross-dressed with—				and cross-dressed with—
		550 lb. nitrate of soda.				400 lb. amonium salts.
Plots.
		Roots.		Leaves.		Roots.		Leaves.
		Tons.	cwt.	Tons.	cwt.	Tons.	cwt.	Tons.	cwt.
1	Farmyard manure, 14 tons	22	11	4	2	22	3	5	7
2	Farmyard manure, 14 tons, and 3-1/2 cwt. superphosphate	23	12	4	14	21	8	5	6
3	Without manure, 1846, and since	13	7	3	4	6	14	2	18
4	3-1/2 cwt. superphosphate, 500 lb. sulphate of potash, and 400 lb. mixed mineral manure	12	17	3	15	16	2	3	0
5	3-1/2 cwt. superphosphate	15	13	3	5	8	10	3	1
6	3-1/2 cwt. superphosphate, and 500 lb. sulphate of potash	15	15	2	18	14	6	2	16
7	3-1/2 cwt. superphosphate, 500 lb. sulphate of potash, and 36-1/2 lb. ammonium salts	16	0	3	1	16	3	3	0

TABLE IX.—continued

		Series 4.				Series 5.
	STANDARD MANURES	Standard manures,				Standard manures,
		and cross-dressed with				and cross-dressed with
		2000 lb. rape-cake, and				2000 lb. rape-cake.
Plots.		400 lb. ammonium salts.
		Roots.		Leaves.		Roots.		Leaves.
		Tons.	cwt.	Tons.	cwt.	Tons.	cwt.	Tons.	cwt.
1	Farmyard manure, 14 tons	24	11	6	1	23	7	4	6
2	Farmyard manure, 14 tons, and 3-1/2 cwt. superphosphate	23	12	6	1	23	1	4	6
3	Without manure, 1846, and since	10	11	3	17	11	2	3	0
4	3-1/2 cwt. superphosphate, 500 lb. sulphate of potash, and 400 lb. mixed mineral manure	24	18	5	7	20	4	3	9
5	3-1/2 cwt. superphosphate	11	7	4	2	12	3	3	2
6	3-1/2 cwt. superphosphate, and 500 lb. sulphate of potash	21	6	5	7	16	14	2	15
7	3-1/2 cwt. superphosphate, 500 lb. sulphate of potash, and 36-1/2 lb. ammonium salts	21	6	5	9	17	10	3	3

TABLE X.—Experiments with different Manures on Permanent Meadow-land.

Thirty-six Years, 1856-91.

	Produce per Acre, weighed as Hay.
	Average per annum,			Average per annum,
Manures per Acre per Annum.	20 years, 1856-75			16 years, 1876-91
	(1st crops only).			(1st and 2d crops).
	10 years,	10 years,	20 years,	1st	2nd
	1856-65.	1866-75.	1856-75.	crops.	crops.	Total.
	cwt.	cwt.	cwt.	cwt.	cwt.	cwt.
Unmanured continuously	22-1/2	20	21-1/4	18	8-1/2	26-1/2
3-12 cwt. superphosphate of lime	23-14	21-1/4	22-1/4	18	9	27-1/2
3-1/2 cwt. superphosphate of lime, and 400 lb. ammonium salts	33-7/8	30-1/2	32-1/4	30-3/4	10-1/2	41-1/4
400 lb. ammonium salts	30-1/2	22	26-1/4	18-1/4	10-1/8	27-3/8
275 lb. nitrate of soda, 3-1/2 cwt. superphosphate, and mixed mineral manure	45-1/4	47-5/8	46-1/2	41-1/8	12-1/8	53-1/4
275 lb. nitrate of soda	34-1/4	33-1/2	33-7/8	30-1/8	10	40-1/8

TABLE XI.—Experiments on the Growth of Potatoes.

Average of Five Seasons, 1876-80.¹