6 o 
Winifred E. Brenchley. 
wheat and the same weeds as before were sown on August 8th ; 
again eight clumps were put in per pot, two buckwheat plants being 
allowed to come up together; spurrey and Brassica were dibbled 
in as before, but the poppy and Alopecurus were scattered in 
little patches where the clumps were to be established. The plants 
were harvested on October 23rd, the roots again being removed 
from the soil. It was noticed that on the lighter soil the 
buckwheat looked better when grown in association with weed than 
when alone, but on the heavier soils the plants were comparable 
in appearance whether they were grown mixed or alone. It will 
be seen that these observations were borne out by the dry weights. 
SOIL A. TOTAL DRY WEIGHTS OF CROP IN SIX POTS. 
Shoot. 
Root. 
Crop. 
Weed. 
Crop + 
Weed. 
Grams. 
Grams. 
Grams. 
Papaver + Papaver 
54 
0-H 
250 
Buckwheat + Papaver 
0-31 
1-2 
359 
Buckwheat-f Buckwheat 
1-6 
274 
Buckwheat + Alopecurus 
0-58 
1-5 
Alopecurus + Alopecurus 
5-1 
1-25 
AVERAGE DRY WEIGHTS OF SHOOTS. 
Crop. 
Weed. 
Per 
clump. 
Per single sowing. 
Per single sowing. 
Grams. 
1.042 
0.748 
1.142 
Grams. | 
4.167 Buckwheat- 
2.992 Buckwheat + Buckwheat 
4.567 Buckwheat- 
Grams. 
Papaver + Papaver 0.45 
-Papaver 0.052 
f Alopecurus 0.097 
Alopecurus+Alopecurus 0.425 
Buckwheat and Papaver; Buckwheat and Alopecurus. 
The growth of the weeds, even when alone, was very irregular 
and poor, probably on account of the lateness of sowing .The poppy 
plants were somewhat mixed, the Papaver Rhceas only reaching a 
height of about two inches, the other species attaining six inches. 
Buckwheat made quite good growth. 
