Download Conversations on vegetable physiology by the author of 'Conversations on chemistry'. By mrs. Marcet

Download Conversations on vegetable physiology by the author of 'Conversations on chemistry'. By mrs. Marcet

You can download in the form of an ebook: pdf, kindle ebook, ms word here and more softfile type. Download Conversations on vegetable physiology by the author of 'Conversations on chemistry'. By mrs. Marcet, this is a great books that I think are not only fun to read but also very educational.
Book Details :
Published on: 2012-03-06
Released on:
Original language: English

This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1839 Excerpt: ...their growth. There is nothing more favourable to the improvement of land than hoed crops, provided no immediate profit be expected from them, and that we are satisfied if they repay the expenses of cultivation: that is to say, the value of the seed, the hoeing, the ploughing, and the manure. But why are not these crops sown so thick as to prevent the growth of weeds, and, consequently, the necessity of hoeing They consist of plants whose roots require a great deal of nourishment, such as peas, beans, turnips, potatoes, and carrots; and, if sown thick, the soil would not afford a sufficient supply of sustenance to bring them to perfection. Yet the weeds which spring up between these plants must rob the soil of a part of its nourishment. They do so, but only temporarily; for the dead weeds, after hoeing, return to the soil in the form of manure. The advantage of hoeing is not confined to the destruction of weeds: it loosens the earth so as to admit the air, turns it over, and heaps it around the roots of the plants cultivated. As hoed crops stand in need of a great deal of manure, they should precede grain, which also requires manure to ripen the seed; and it is from the sale of grain, raised under these advantageous circumstances, that the cultivator will derive his profit. It must be recollected also, that the more the green crops are increased, the greater is the number of cattle you are enabled to feed, and, therefore, the more considerable is the stock of manure. It is very remarkable, and, however paradoxical it may appear, is nevertheless true, that, since the introduction of assolements, meadows diminish, whilst cattle multiply; and corn-fields diminish, whilst grain increases. These miracles are performed by the artificial grasses, the leguminous a...
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