Catechism of Agricultural Chemistry and Geology |
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... raised must be rendered more productive , if food is to be grown at home for our increasing population . But the pro- duce can be largely increased only by the applica- tion of increased knowledge to the culture of the soil ; -and it is ...
... raised must be rendered more productive , if food is to be grown at home for our increasing population . But the pro- duce can be largely increased only by the applica- tion of increased knowledge to the culture of the soil ; -and it is ...
Page 1
... raise the largest crops , at the smallest cost , and with the least injury to the land . Q. What ought the farmer especially to know , in order that he may attain this object ? A. The farmer ought especially to know the na- ture of the ...
... raise the largest crops , at the smallest cost , and with the least injury to the land . Q. What ought the farmer especially to know , in order that he may attain this object ? A. The farmer ought especially to know the na- ture of the ...
Page 33
... raise all your turnip crops with bones alone ? A. No , if I raised one crop of turnips from bones alone , I would raise the next crop on the same field with farm - yard manure alone - if I could get it . Q. Are bones ever applied to ...
... raise all your turnip crops with bones alone ? A. No , if I raised one crop of turnips from bones alone , I would raise the next crop on the same field with farm - yard manure alone - if I could get it . Q. Are bones ever applied to ...
Page 35
... raised from it . Q. What is the best way of using pigs ' dung ? A. The best way is to make it into a compost , or to mix it with the dung of other animals . Q. Why is cow - dung colder and less liable to ferment than most other kinds of ...
... raised from it . Q. What is the best way of using pigs ' dung ? A. The best way is to make it into a compost , or to mix it with the dung of other animals . Q. Why is cow - dung colder and less liable to ferment than most other kinds of ...
Page 39
... raising tur- nips and potatoes , mixed with one - half manure . Q. Why is it better husbandry ? A. Because the guano , used alone , does not sup- ply to the land a sufficient quantity of organic mat- ter to maintain it in the most ...
... raising tur- nips and potatoes , mixed with one - half manure . Q. Why is it better husbandry ? A. Because the guano , used alone , does not sup- ply to the land a sufficient quantity of organic mat- ter to maintain it in the most ...
Common terms and phrases
AGRICULTURAL CHEMISTRY ammonia animal require applied bone-earth bones burns called carbon and water carbonic acid gas CHEMISTRY AND GEOLOGY Chlorine clover common salt compost consist of carbon contain cow-dung crops cwts draining dung earth EDINBURGH employed fall to powder farm-yard manure farmer fattening fermentation fertile give gluten grass lands grow guano gypsum hydrogen inorganic kind of air large quantity leaves LECTURES ON AGRICULTURAL light lands lighted taper limestone liquid magnesia marl mixed nitrogen oats obtain oil of vitriol organic food organic matter oxide of iron oxygen gas phosphate of lime phosphoric acid plants require potash potatoes produced profit proportion pupils quicklime roots sea-weed shell sand Silica slaked smell soda soil consists sour starch straw subsoil substances sulphuric acid supply taste teacher may exhibit teacher may illustrate teacher will show turnip usually vegetable waste wheat white fumes wood woody fibre
Popular passages
Page 17 - Q. Whence is the organic part of the soil derived? A. It is derived from the roots and stems of decayed plants, and from the dung and remains of animals and insects of various kinds. Q. Does this organic part form a large proportion of the soil ? A. Of peaty soils it forms sometimes three-fourths of the whole weight; but of rich and fertile soils it does not usually form more than from a twentieth to a tenth of the whole weight. Q. Can a soil bear good crops which does not contain a considerable...