D4 
PLAN FOR SOIL TREATMENT IN THE CENTRAL MEADOW OF 
THE BROOKLYN BOTANIC GARDEN 
Submitted by 
Mr. G. B. Maynaprer, of the Bureau of Soils, U. S. Dept. Agr. 
1911. On old fields or where soil has not recently been hauled in: To 
July or = tee permit grass and weeds now occupying the land to make 
growth—especially if sod is heavy, mowing as often as necessary to prevent 
development of seed. Mown grass should be permitted to remain on the 
groun 
July to August plow deeply, turning sod well under, harrow and 
apply freshly slaked lime at rate of 4oo lbs. to 500 Ibs. per acre. Afte 
plowing apply manure in as large quantities as obtainable. Let lie fallow 
for two or three weeks. Disc and harrow thoroughly, so as to distribute 
lime, limestone and manure through the surface soil to a depth of 3 or 4 
inches. Sow with rye, using 5 pecks to the acre at least. Time of sowing 
rye will depend somewhat on the weather, but it must be completed by 
October, the aim being to get it well started before winter sets in. The 
rye should be drilled in to get an even stand. 
912. Plow rye under as early in the season as possible, as soon as it 
has attained a growth of 8 to 10 inches and while it is green and succulent. 
This plowing should be about 5 inches deep and done in such a manner 
that the plants are turned well under. Use a plow with rolling mold 
board (not steep). Allow this turned-under sod to lie fallow and un- 
disturbed for one to two weeks to allow decomposition of the green parts 
to set. in, 
Cross plow and disc to a depth of 3 or 4 inches, applying about rooo 
Ibs. of ground phosphate rock (Floats) per acre, which must be well 
harrowed in. Harrow until ground is well pulverized to a depth of 2 or 
3 inches. Apply broadcast about 500 Ibs. per acre of a ae composed 
of— 
300 Ibs. Dried Blood 12%% N. =37%lbs. N. 
700 Ibs. 14% Acid Pho sph ate =toys} | lpyay Je”. 
600 Ibs. — grade tankage 
and : 20) —=44.4 Neo inate seule: 
400 Ibs. Sulph, Potash 90% ama 3 es K. 
This will give in a ton 2000 lbs.=-81.9 lbs. N.; 153.2 P.; and 199.6 Ibs. 
K.; or, expressed in usual fertilizer formula—4% N, 7% P, 10% K (4-6-8 
may be substituted) in an immediately available form, except the N, 
which, being from organic source, is somewhat slowly available 
It must be borne in mind, however, that considerable Fe ohone acid 
has been added in the ground rock, and some N should be already avail- 
able as a result of the geconinosiiion of the organic matter and manure, 
ey if the crimson clover has been used. 
on per cent. of potash seems rather high, but bee soils of this 
vicinity ae show ee potash is one of their chief needs. If a sickly 
green color is observed in the young growth, it eae results from a 
iy 
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