 ... easily destroyed. Are any of the salts of iron present? they may be decomposed by lime. Is there an excess of siliceous sand? the system of improvement must depend on the application of clay and calcareous matter. Is there a defect of calcareous matter...  The Farmer's Magazine - Trang 1201840Xem Toàn bộ - Giới thiệu về cuốn sách này
 | Sir Humphry Davy, George Sinclair, John Russell Duke of Bedford - 1815 - 452 trang
...and calcareous matter. Is thefe a defect of calcareous matter? the remedy is obvious. Is an excess of vegetable matter indicated ? it may be removed by...employed in cultivation often occurs. To determine this fully in the common way of experience, would demand a considerable time, perhaps some years, and trials... | |
 | Andrew Ure - 1821 - 436 trang
...calcareous matter. Is there a defect of calcareous matter ? The remedy is obvious. Is an excess of vegetable matter indicated ? It may be removed by...vegetable matter? It is to be supplied by manure. Peat earth is a manure ; but there are some varieties of peats which contain so large a quantity of... | |
 | Joseph Hayward - 1825 - 242 trang
...I« " an excess of vegetable matter indicated ? It " may be removed by liming, paring, and burn" ing. Is there a deficiency of vegetable. matter ?. " It is to be supplied by manure." He also says, "The phenomena of vegetation " must be considered as an important branch of " the science... | |
 | Andrew Ure - 1827 - 904 trang
...and calcareous matter. Is there a defect of calcareous matter? The remedy is obvious. Is an excess of vegetable matter indicated? It may be removed by liming,...vegetable matter? It Is to be supplied by manure. Peat earth is a manure; but there arc some varieties of pests which uontain so large a quantity of... | |
 | John Ayrton Paris - 1831 - 598 trang
...and calcareous matter. Is there a defect of calcareous matter? the remedy is obvious. Is an excess of vegetable matter indicated? it may be removed by liming,...vegetable matter? it is to be supplied by' manure." In the selection also of the remedy, after the discovery of the evil, chemical knowledge is of the... | |
 | Andrew Ure - 1831 - 980 trang
...calcareous matter. Is there a defect of calcareous matter ? The remedy is obvious. Is an excess of vegetable matter indicated? It may be removed by liming,...vegetable matter ? It is to be supplied by manure. Peat earth is a manure ; but there are some varieties of peats which contain so large a quantity of... | |
 | John Ayrton Paris - 1831 - 582 trang
...and calcareous matter. Is there a defect of calcareous matter? the remedy is obvious. Is an excess of vegetable matter indicated? it may be removed by liming,...vegetable matter? it is to be supplied by manure." In the selection also of the remedy, after the discovery of the evil, chemical knowledge is of the... | |
 | Sir Humphry Davy - 1836 - 458 trang
...calcareous matter. Is there a defect of calcareous matter ? the remedy is obvious. Is an excess of vegetable matter indicated ? it may be removed by...employed in cultivation often occurs. To determine this fully in the common way of experience, would demand a considerable time, perhaps some years, and trials... | |
 | John Sinclair - 1837 - 816 trang
...application of clay and calcareous matter. Is there a defect of calcareous matter? The remedy is obvious : it may be removed by liming, paring, and burning....vegetable matter ? it is to be supplied by manure." The philosophical lecturer gives other interesting examples, but those already stated will explain... | |
 | Central Society of Education (London, England) - 1839 - 482 trang
...calcareous matter. — Is there a defect of calcareous matter ? The remedy is obvious. — Is an excess of vegetable matter indicated ? It may be removed by...employed in cultivation often occurs. To determine this fully in the common way of experience, would demand a considerable time, perhaps some years, and trials... | |
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