INFLUENCE OF MANURES ON GRASS LAND. 149 

duly noted. At the stations of Set 1, twelve plots are con- 
cerned with these substances, while intke case of Set 2, ten 
plots are similarly occupied, the points dealt with by the 
remainder of the plots at each station being for the present 
left out of account, except as regards Plot 16 of Set 2, which 
received lime. 
In order that there may be no misapprehension it may be 
specifically stated that in the following pages the yield of hay, 
and relative and absolute abundance of the various plants, 
refer to the crop of 1899 only. That was the fifth year of the 
experiments, and by that time the manures may be supposed 
to have had time to produce most of the effects of which they 
are capable. The weights of hay and manure always refer to 
an acre. 
AGROSTIS (TABLES I. AND II.). 
This genus of grass was usually the most abundant con- 
stituent of the herbage, though at Gosforth it never exceeded 
12 per cent., while at Wigton it was always under 7'5 per 
cent. Agrostis, under its different species and varieties of 
Bent Grass, Black Bent, Water Grass, Poor-land Twitch, &c., 
is generally regarded as one of our poorest grasses: and it 
may safely be concluded that any treatment that reduces its 
abundance is, to that extent at least, advantageous. 
Table 1.—Effects of Manures on Agrostis 'Set 1). 




| N 









Manures per acre. Blencow. Castle Carrock. Eskdale. | Glasson. 
R | 
ls fee ie a . e . 
Bi2sae2) 3 wl = iiss) Vieldof oe) Vieldof ||5% Vieldof |\5 H) Vield of 
Bes) TS ela 5 Om| Agrostis. |G 7| Agrostis. (om Agrostis. ||] Agrostis. 
aD) ae N | | Pa |i | SS > a 
| | 
| 
lbs. | 
542 
= 
J 
wn 
= 
om 
”n 
= 
Sr 
wn 
o 
Wn 
(?) 
< 
ct 
oe 
Ibs 
8] 719 
Ibs.|Icewt.| % | Ibs. |icwt.| % | Ibs. 
ee ieee ce eee ee | (23.21 7A Tall) 5 GO0)||(22 2307 Soa 272 
Q 
a 
= 
ct 
CD'S 
et 
4 
oN 
aN 
fe) 
h 
Z|) wee, > |) S|) | Ill AEG eG || QyaeKS |) SEH) BO || eexo> Ill Sih |] SULSi| shy Ill) were Geto) || se 
— | — | 280, — | — |] 354) 757° | 2,96r || 22 | 23°8| 586 || 263) 17°7 | 525 || 22 | 46°3 | 1,140 





LE || 112) — | 140 ES 280|| 29}| 41°1 | 1,346 || 273| 182 | 560 















12 || — | 86 | — | go 280 24} 36°%0 997 || 304| 21°99 | 748 || 304| 25°4| 860 || 19 
