Page:Cricket (Hutchinson, 1903).djvu/582

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440
CRICKET

roll. In a few days no trace of the operation will be visible, but the grass ought not to be roughly used until it is thoroughly re-established.

Fairy rings are sometimes troublesome. They are caused by several kinds of fungus. When these decay, the soil becomes charged with nitrogenous matter, and a dark green spot of grass is the result. The mycelium exhausts the soil of the constituents which are essential to the existence of the fungi, and as new supplies of food can only be found on fresh ground, the spot becomes a circle, which annually increases in circumference, until it either breaks up or the fungi are exhausted. No direct remedy is known, but it has been observed that lawns which are liberally dressed every spring with stimulating manure produce dark green herbage, closely resembling the fairy rings in colour. As a consequence the circles are less conspicuous, and they also show a tendency to disappear under the effects of the manure.

Moss is generally a sign of poorness of soil, and sometimes indicates the need of drainage. But before laying in drain-pipes remedial measures should be tried, especially as the work of draining sadly cuts the place about. There may also be a difficulty as to the disposal of the outflow. To improve the grass, either put the rake heavily over the sward, or employ a toothed harrow to drag out as much moss as possible. Then spread over the turf a compost, previously prepared, of lime mixed with rich soil free from weeds, in the proportion of one load of lime to