Elements of Agricultural Chemistry and GeologyW. Blackwood, 1852 - 410 páginas |
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Página ix
... gluten , albumen , and casein . - Germination of seeds and growth of plants . Mutual transformation of starch , sugar , and cellulose . - Produc- tion of cellular fibre from the organic food of plants . - Necessity of nitro- gen , or ...
... gluten , albumen , and casein . - Germination of seeds and growth of plants . Mutual transformation of starch , sugar , and cellulose . - Produc- tion of cellular fibre from the organic food of plants . - Necessity of nitro- gen , or ...
Página xiii
... gluten and yield of flour . - Experiments of Mr Burnet.— Composition of the oat , and influence of variety on its composition and nutritive quality . - Composition of barley , and influence of circum- stances on its sprouting , melting ...
... gluten and yield of flour . - Experiments of Mr Burnet.— Composition of the oat , and influence of variety on its composition and nutritive quality . - Composition of barley , and influence of circum- stances on its sprouting , melting ...
Página xiv
James Finlay Weir Johnston. xiv CONTENTS . PAGE ties of starch and gluten contained in our usually cultivated crops.- Quantity of oil or fat in grain , root , and hay crops . - Absolute quantity of food yielded by an acre of land under ...
James Finlay Weir Johnston. xiv CONTENTS . PAGE ties of starch and gluten contained in our usually cultivated crops.- Quantity of oil or fat in grain , root , and hay crops . - Absolute quantity of food yielded by an acre of land under ...
Página 37
... gluten , albumen , and casein . - Germination of seeds and growth of plants . - Mutual transformations of starch , sugar , and cellulose . - Production of cellular fibre from the organic food of plants . Necessity of nitrogen , or ...
... gluten , albumen , and casein . - Germination of seeds and growth of plants . - Mutual transformations of starch , sugar , and cellulose . - Production of cellular fibre from the organic food of plants . Necessity of nitrogen , or ...
Página 43
... gluten , and fat . The annexed woodcut shows the position and relative quantities of the last three.sub- stances in the seeds of wheat , barley , and Indian corn . Thus , a shows the Barley . position of the oil Indian Corn . Fig . 13 ...
... gluten , and fat . The annexed woodcut shows the position and relative quantities of the last three.sub- stances in the seeds of wheat , barley , and Indian corn . Thus , a shows the Barley . position of the oil Indian Corn . Fig . 13 ...
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Elements of Agricultural Chemistry and Geology James Finlay Weir Johnston Visualização integral - 1855 |
Palavras e frases frequentes
abound acre agricultural ammonia animal applied arable barley bones burned bushels carbonic acid cent chalk chemical chiefly clay composition consists contain crops decay dissolved districts drains dung effect farmer farmyard manure fermentation fertilising fertility fibre geology gluten grain grass green grow growth guano gypsum Hence improvement inorganic kind land leaves less limestone liquid magnesia milk mineral mixed mixture natural nearly nitrate nitrate of soda nitric acid nitrogen oats organic food organic matter oxide of iron oxygen pasture peat phosphate phosphate of lime phosphoric acid plants ploughing portion potash potato practical produce proportion protein compounds quantity rains readily rich rocks roots saline matter saline substances salt sand sandstone sandy SECTION seed silica soda soil solid soluble starch straw subsoil sugar sulphate sulphuric acid supply surface tain tion top-dressing turnip urine vegetable matter weight wheat yield
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Página 217 - Johnstone remarks (Ag. f' it fin., p. 170), the amount of nitrogen present in each of the organic manures affords one of the readiest and most simple tests by which their relative agricultural values, compared with those of vegetable matters and with each other, can be pretty nearly estimated. In reference to their relative quantities of nitrogen, therefore, they have been arranged in the following order, the number opposite to each representing the weight in Ibs. which is equivalent to or would...
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Página 41 - When a seed is committed to the earth, if the warmth and moisture are favorable it begins to sprout. It pushes a shoot upwards, it thrusts a root downwards ; but until the leaf expands and the root has fairly entered the soil, the young plant derives no nourishment other than water, either from the earth or from the air. It lives on the starch and gluten contained in the seed.
Página 73 - ... in vegetable matter, leave no more than 10 of clay when treated in this manner, it is called a sandy soil; if from 10 to 40, a sandy loam; if from 40 to 70, a loamy soil; if from 70 to 85, a clay loam ; from 85 to 95, a strong clay soil; and when no sand is separated at all by this process, it is a pure agricultural clay.
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