164 INFLUENCE OF MANURES ON GRASS LAND. 

in sixteen at the stations of Set 1 the percentage of this plant 
has been reduced by nitrate of soda, and in many cases the 
reduction is very striking. This result is probably largely 
due to the fact that when the general herbage is forced by 
nitrate of soda, ribwort, being rather a small plant, is partly 
crowded out. 
Table XI.—Effects of Manures on Ribwort (Set 1). 






















| Manures per acre. || Blencow. Castle Carrock. Eskdale. Glasson. 
iH | 
| ; = = = 
| | | | | 
| | > bad - 
{3 om ~~ Gy jw a Res =—<+ j er 
eeu ested (ere Tee, (coum mec So | o8 Bir = 2 3 35 
HY =) (I Weis rsa Pcs ee ca Za Sz Se) SB S32) 32 
lie Sire Bl St || oe | el Ore oie eS Oe) © eS 2a) 22 
| - | - —_— —_— Ky Les le | » = ~ ‘ ~~ a “s 
|W4Znindg| na} m | M i ee 4 | = a= ey payee Si 
eaeee | - 
1 ; a / 
| lbs. | Ibs. } Ibs.} lbs Ibs. || cwt. | | Ibs. || cwe. | Ibs. || cwt Ibs. || cwt. lbs 
i| 
| i 
| | | ra 
1 —}—|—|—] —|] 238 | x4 | 36 |] 22 | x2°2| 300 |] 27 | 1977] 595 || xx 63 | 77 
| | 
it | i | | 
| | 2 a l oc / 
<== | | — | — | — || 282 | o°8 | 25 || 283 | xxx | 357 |] 33 | 23°3 | 867 || 1x3 |a574 | 204 
1] 
| | . || i 
— | — }280 | —|—j] 354 | O21 | 3 |] 22 | 292] 620 |] 265 | xr 8 | 350 || 22 779 | 194 
| ; 
| | | | = = 
| EE 332 | 23 | 49 || 2x¥ | 22°5| 548 || 213 | 11-4 | 274 || 162 | 86 | x6x 
i | | ’ 
S 203 |} oc 622 2 re 5 oar -3 - / = 
— | — | — | — [280 |] 322 | og | 14 || 22 | 25°90 | 633 || 24% | 10°%6 | 287 || a7¥ | 27 | 53 
| 
112 | — [280 | — | — || 332 | —] — I] 25 | 2ut4| ssz || 322 | 124] 405ml 2x Poe 8 
= =o 224 | | =) =< JD +4 fs) 5 5 
| | | | | 
US | ee | | S| | — || 25% |14°3 | 408 || 372 | 9°7] 420 || 183 | x4] 29 
| | 
| hue Sat I Jeone + s p Sos 
alas 280 | — |280 || 253 | o'2 5 || 253 | 2775 | 404 || 37. | r2°8| 488 |] co | x3 29 
| | 
irr2 | — |280 | — |280 |} 294 | o*z 3 || 26 | 26°7 | 792 || 383 | 10°} 43% || 208 | 37x Jo 
| | 
| | } 
a me 
Rca Bel Nc 208 [280 || 29 | ox 3 || 252 |12°7 | 337 38 | 86] 366 || 233 | 377 | ro2 
ii | 
ljzz2 | — |z40 |104 |280 || 292 | o-2 | 6 || 273 | 19.3] 590 35 | 10°93 | 40 231 | ox 65 
4 + \22 Ox 2 72 9-3 | 594 3D. 3 | 493 232 |, 25 5 
| | 
| | > | 
— | 86 | — |208 |280 243 | or 2 |} 303 | 16°0 | 546 |} 30% | 9°°| 304 |] agi | 456 | a9 
| | | | 


Ribwort holds its own fairly well under the influence of 
increasing doses of nitrate ; itis only when a triple dressing 
is used (Plot 8, Table XII.) that the percentage of this plant 
shows a tendency to decline. In respect of this, however, it 
may be noted that ribwort has a much greater tendency to 
disappear before the influence of increasing doses of nitrate 
at Glasson than at any of the other stations. 
Sulphate of ammonia has not had such a repressing influ- 
ence on this piant as nitrate of soda. 
Influence on Ribwortof Super and Kaniit.—At Blencow both 
have almost consistently reduced the percentage of this plant, 
but at other places no definite tendency in any direction can 
be traced. 
With the single exception of Kirkbampton ribwort has 
