. The Canadian horticulturist [monthly], 1901. Gardening; Canadian periodicals. CENTRAL EXPERIMENTAL EARM NOTES. i^'*^-. ,' â :JM(f &. "^'^ ' f 9 'J . 1 â¢%, Fir,. igSo. Winter at Central Experimental Farm, Ottawa. {Shtitt.') preventing- the alternate freezing- and thaw- ing of the ground which occurs in late winter or early spring, and which often proves so disastrous to trees. After the seed is sown, the soil should be rolled with a heavy- land roller, which will cause the moisture to rise to the surface of the soil and assist the germination of the seed. This rolling is very import
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. The Canadian horticulturist [monthly], 1901. Gardening; Canadian periodicals. CENTRAL EXPERIMENTAL EARM NOTES. i^'*^-. , ' â :JM(f &. "^'^ ' f 9 'J . 1 â¢%, Fir, . igSo. Winter at Central Experimental Farm, Ottawa. {Shtitt.') preventing- the alternate freezing- and thaw- ing of the ground which occurs in late winter or early spring, and which often proves so disastrous to trees. After the seed is sown, the soil should be rolled with a heavy- land roller, which will cause the moisture to rise to the surface of the soil and assist the germination of the seed. This rolling is very important, as should the seed lie in the ground for any length of time without ger- minating, there will not be time for a g-ood cover crop to be formed before winter. No nurse crop, is, as a rule, necessary. In places where the soil is very dry, lucerne or alfalfa might be sown with advantage, as the seed of this clover appears to germinate more readily than that of the common red clover. Cow peas and crimson clover may be used in the warmer parts of the country. The hairy vetch (vica villosa), has been used with very satisfactory results b}^ Mr. J. Tweedle, Fruitland, Ontario. " Another advantage of clover growing in an orchard in autumn, is that much of the plant food in the soil which has been liberated and made more easily available by the constant cultivation during the early part of the summer, is prevented from leach- ing by being used by the growing plants, the clover thus becoming- a ' catch crop, ' as well as a cover crop. " Where soils suffer from lack of moisture in a dry time, the clover should be ploughed under as early in the spring as the land can be worked, and cultivation begun at once. This will conserve much of the moisture which would otherwise be transpired through the leaves of the growing plants until they were ploughed under towards the end of May, which is the usual time. If the soil, however, contains plenty of moisture, it would be better to l