In the Agriculture of the West of Scotland, the cultivation of turnips in rows has been carried to a very high degree of perfection; insomuch, that thirty tons per statute acre of Swedish turnips are usually calculated on, when the soil and weather are tolerably favourable. Carrots and mangold wurtzel produce generally within one or two tons of the same quantity, ana common turnips and potatoes from two to five tons more. One principal cause of this enormous produce is unquestionably the moisture of the climate; but, at the same time, much is owing to the culture, which is very perfect. The rotation, on most soils, is, 1st, turnips, potatoes, or other herbage or root, crop drilled, the dung being buried in the drill, or naked fallow; 2d, barley or wheat, with clover and rye-grass; 3d, clover and rye-grass fed off, or the first crop mown for hay; 4th, pasture; 5th, pasture; and, 6th, oats. Round Kilmarnock, a great quantity of annual and perennial rye-grass seed is raised, and this crop is reckoned on a par with one of oats, in point of exhausting the soil. Iron ploughs have almost every where been substituted for wooden ones, and the saving is considered great, on account of their extreme durability. They were introduced about twenty-six years ago, and there is not a single instance of one of them being worn out.
