Elements of Agricultural Chemistry and GeologyW. Blackwood, 1852 - 410 páginas |
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Página xiii
... potato , turnip , mangold - wurtzel , and carrot.— Influence of soil , variety , manure , & c . , on the quality of the potato and the quantity of starch it contains . - Influence of soil , season , variety , and manure on the ...
... potato , turnip , mangold - wurtzel , and carrot.— Influence of soil , variety , manure , & c . , on the quality of the potato and the quantity of starch it contains . - Influence of soil , season , variety , and manure on the ...
Página 15
... Potatoes , 440 58 447 15 40 • Wheat , 461 58 434 23 24 Wheat Straw , 484 53 389 3 70 Oats , 507 64 367 22 40 Oat Straw , 501 54 390 51 It is to be observed , however , that in drying by a gentle heat , 1000 lb. of common hay from the ...
... Potatoes , 440 58 447 15 40 • Wheat , 461 58 434 23 24 Wheat Straw , 484 53 389 3 70 Oats , 507 64 367 22 40 Oat Straw , 501 54 390 51 It is to be observed , however , that in drying by a gentle heat , 1000 lb. of common hay from the ...
Página 44
... besides that which occurs in the flour of wheat , oats , barley , the potato , & c . These are all insoluble in cold water , but give a jelly with boiling water . The Iceland GUMS , MUCILAGES , AND SUGARS . 45 moss ,
... besides that which occurs in the flour of wheat , oats , barley , the potato , & c . These are all insoluble in cold water , but give a jelly with boiling water . The Iceland GUMS , MUCILAGES , AND SUGARS . 45 moss ,
Página 50
... potato , the turnip , and other roots , after being heated to coagulate the albumen - and the solution obtained when the meal of the bean , the pea , and other legumes , is treated with warm water - yield , on the addition of an acid ...
... potato , the turnip , and other roots , after being heated to coagulate the albumen - and the solution obtained when the meal of the bean , the pea , and other legumes , is treated with warm water - yield , on the addition of an acid ...
Página 64
... Potatoes , 8 to 15 Turnips , Carrots , 5 to 8 15 to 20 * So that the quantity of inorganic food required by differ- ent vegetables is greater or less according to their nature ; and if a soil be of such a kind that it can yield only a ...
... Potatoes , 8 to 15 Turnips , Carrots , 5 to 8 15 to 20 * So that the quantity of inorganic food required by differ- ent vegetables is greater or less according to their nature ; and if a soil be of such a kind that it can yield only a ...
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Outras edições - Ver tudo
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 382 - We have thoroughly examined these volumes ; but to give a full notice of their varied and valuable contents would occupy a larger space than we can conveniently devote to their discussion ; we therefore, in general terms, commend them to the careful study of every young man who wishes to become a good practical farmer.— Times.
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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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