I once observed a crop of burnet, in which Bromus secalius (Lob Grass)
was growing, whose spike stood a considerable height above the crop, and
several acres of which a boy or woman might have cut over in a short
space of time: but it was not so: the grass seeds and burnet were
suffered to ripen together, and no means could be devised to separate
the two when threshed. For this reason the burnet seeds never could find
a market, and consequently the trouble of saving it, as well as the
crop, was lost to the grower. I mention this as an instance of many that
frequently occur. How many times do we see with crops of winter tares
wild oats seeding in them? or Carduus mutans standing so high above
those crops that they might be thus extirpated with great ease?
It may be observed, that it is in culture of this nature where annual
seeds multiply. A regular crop of wheat will, by its thickness on the
ground, retard their growth by smothering them; but the other gives them
every facility, and particularly autumnal-sown crops.
664. Blue-bottle - - - Centaurea Cyanus.
665. White-blite - - - Chenopodium album.
666. Charlock - - - Sinapis arvensis.
667. Chickweed - - - Alsine media.
668. Cockle - - - Agrostemma Githago.
669. Cleavers - - - Galium Aparine.
Pages:
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279