Talks on Manures / A Series of Familiar and Practical Talks Between the Author and the Deacon, the Doctor, and Other Neighbors, on the Whole Subject - Joseph Harris

Experiments at Rothamsted on the Growth of Wheat, Year after Year, on the same Land.

Table IX.—Manures per Acre per Annum (with the exceptions explained in the Notes on p. 203), for 12 Years in succession—namely, for the 9th, 10th, 11th, 12th, 13th, 14th, 15th, 16th, 17th, 18th, 19th, and 20th Seasons: that is, for the crops of Harvests 1852-53-54-55-56-57-58-59-60-61-62 and 1863.*

FM Farm-yard Manure. CS Common Salt. SP Sulphate of Potass.¹ SS Sulphate of Soda.¹ SMg Sulphate of Magnesia.¹ SPL Superphosphate of Lime. B-A Bone-ash.

SAc Sulphuric Acid. (Sp. gr. 1.7) MAc Muriatic Acid. SAm Sulphate of Ammonia. MAm Muriate of Ammonia. NS Nitrate of Soda. RC Rape-cake.

P l o t s.	Manures per Acre per Annum for 12 Years, 1851-2 to 1862-3 inclusive, except in the cases explained in the Notes on p. 203.
						Superphosphate of Lime.
	FM	CS	SP	SS	SMg	B-A	SAc	MAc	SAm	MAm	NS	RC
	Tons.	lbs.	lbs.	lbs.	lbs.	lbs.	lbs.	lbs.	lbs.	lbs.	lbs.	lbs.
0	..	..	..	..	..	600	450	..	..	..	..	..
1	..	..	600	400	200	..	..	..	..	..	..	..
2	14	..	..	..	..	..	..	..	..	..	..	..
3	Unmanured		..	..	..	..	..	..	..	..	..	..
4	Unmanured		..	..	..	..	..	..	..	..	..	..
5a	..	..	300	200	100	200	150	..	..	..	..	..
5b	..	..	300	200	100	200	150	..	..	..	..	..
6a	..	..	300	200	100	200	150	..	100	100	..	..
6b	..	..	300	200	100	200	150	..	100	100	..	..
7a	..	..	300	200	100	200	150	..	200	200	..	..
7b	..	..	300	200	100	200	150	..	200	200	..	..
8a	..	..	300	200	100	200	150	..	300	300	..	..
8b	..	..	300	200	100	200	150	..	300	300	..	..
²9a	..	..	300	200	100	200	150	..	..	..	550	..
³9b	..	..	..	..	..	..	..	..	..	..	550	..
10a	..	..	..	..	..	..	..	..	200	200	..	..
10b	..	..	..	..	..	..	..	..	200	200	..	..
11a	..	..	..	..	..	200	150	..	200	200	..	..
11b	..	..	..	..	..	200	150	..	200	200	..	..
12a	..	..	..	550	..	200	150	..	200	200	..	..
12b	..	..	..	550	..	200	150	..	200	200	..	..
13a	..	..	300	..	..	200	150	..	200	200	..	..
13b	..	..	300	..	..	200	150	..	200	200	..	..
14a	..	..	..	..	420	200	150	..	200	200	..	..
14b	..	..	..	..	420	200	150	..	200	200	..	..
15a	..	..	300	200	100	200	..	200	400	..	..	..
15b	..	..	300	200	100	200	..	200	300	..	..	500
16a	..	336⁴	300	200	100	200	150	..	400	400	..	..
16b	..	..	300	200	100	200	150	..	400	400	..	..
{17a	..	..	..	..	..	..	..	..	200	200	..	..
⁵{17b	..	..	..	..	..	..	..	..	200	200	..	..
{18a	..	..	300	200	100	200	150	..	..	..	..	..
⁵{18b	..	..	300	200	100	200	150	..	..	..	..	..
19	..	..	..	..	..	200	..	200	300	..	..	500
20	Unmanured		..	..	..	..	..	..	..	..	..	..
21	..	..	300	200	100	..	..	..	..	100	..	..
22	..	..	300	200	100	..	..	..	100	..	..	..

* For the particulars of the produce of each separate season, see Tables X.-XXI. inclusive.

NOTES TO TABLE IX. (p. 202.)

1. For the 16th and succeeding seasons—the sulphate of potass was reduced from 600 to 400 lbs. per acre per annum on Plot 1, and from 300 to 200 lbs. on all the other Plots where it was used; the sulphate of soda from 400 to 200 lbs. on Plot 1, to 100 lbs. on all the Plots on which 200 lbs. had previously been applied, and from 550 to 336½ lbs. (two-thirds the amount) on Plots 12a and 12b; and the sulphate of magnesia from 420 to 280 lbs. (two-thirds the amount) on Plots 14a and 14b.

2. Plot 9a—the sulphates of potass, soda, and magnesia, and the superphosphate of lime, were applied in the 12th and succeeding seasons, but not in the 9th, 10th, and 11th; and the amount of nitrate of soda was for the 9th season only 475 lbs. per acre, and for the 10th and 11th seasons only 275 lbs.

3. Plot 9b—in the 9th season only 475 lbs. of nitrate of soda were applied.