The Journal of the Royal Agricultural Society of England |
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abortion acre agricultural alluvial ammonia amount animal average barley beds bi-phosphate bones bred breed bushels carbonate cent chalk clay considerable contain coprolites covered crop cultivation deep deposits depth disease district drainage drains dressed corn drill eggs experience farm farmer feet fens flax fowls grain grass gravel guano hens hills horses inches increase Isle of Axholme labour land less lime Lincolnshire loam magnesia manure marsh matter miles mineral months-old natural nitrogen oats obtained oolite outfall Oxford clay Pearlash peat phosphate phosphate of lime phosphoric acid plants plough portion potatoes Prize produce proportion quantity ridges river salts sand sandy season seed sheep silicate soda soil soluble South Holland sown straw subsoil substance Sulphate sulphuric acid superphosphate superphosphate of lime supply surface Sussex Sussex sheep tion tract turnips uterus variety warp wheat whole Witham Wolds yards
Popular passages
Page 209 - In a few seconds, the free acids unite with the bases contained in the earth, and a neutral salt is formed in a very fine state of division.
Page 450 - The original plan of the book has not been altered, but the volume has attained a larger size, owing to the many additions necessary to do justice to the subject. Nor is this increase surprising when it is remembered that, sixty-five years ago, the excellent and in great measure original ' Outlines of the Geology of England and Wales,' by Conybeare and Phillips, filled 531 pages; and only the first part of that work was published.
Page 529 - During the whole of our march we experienced that no quantity of clothing could keep us warm whilst we fasted, but on those occasions on which we were enabled to go to bed with full stomachs, we passed the night in a warm and comfortable manner.
Page 14 - mechanical form and chemical qualities " of the so-called "Mineral Manure" were at fault, the sulphate of ammonia has, at least, compensated for the defect ; and even supposing a mineral manure, founded on a knowledge of the composition of the ashes of the plant...
Page 35 - ... under the ordinary course of rotation and home manuring ! Collateral experiments also clearly prove the importance of a liberal supply of organic substance rich in carbon — which always contains a considerable quantity of nitrogen also — if we would in practical agriculture increase the yield much beyond the amount which can be obtained by mineral manures alone ; and these conditions being fulfilled, the direct supply of nitrogen, on the other hand, is by no means so generally essential....
Page 516 - ... little obscure, though it is, perhaps, readily enough given, if we use the general language which the custom of medical authorities on this subject allows us. We can, without difficulty, enumerate a number of debilitating causes; and if, with Dr. Alison, we limit " the causes of debility " to those " acting permanently, or habitually for a length of time, although not so powerfully as to produce sudden or violent effects...
Page 201 - The other trial was made on an 8 -acre piece of red wheat following barley. The wheat had begun to appear very blue and spindling, notwithstanding a good coat of dung given it in the autumn, to make up for cross cropping. The improvement was immediate, and has stood the test of threshing, for the account is as follows. Two acres were threshed, one on each side adjoining the half acre in the middle on which no nitrate of soda was sown. Value Bushels Increase Cost of per Acre Proflt per Acre, in Bushels....
Page 39 - ... up. But the results obtained with barley, as well as those with wheat, have shown that, whilst it is essential that there be a liberal provision of mineral constituents within the soil, the amount of produce is more dependent on the supply by manure of available nitrogen than of any other constituent.
Page 35 - ... promulgated doctrines ? Another instance of this kind will come to light, in considering Baron Liebig's comments on that part of our criticism of his views, which led to the attack on our experiments and conclusions in reference to the growth of turnips. In one of our papers we had said : — " But it is at any rate certain that phosphoric acid, though it forms so small a proportion of the ash of the turnip, has a very striking...
Page 505 - Of these lime, magnesia, sulphuric acid, silica, and chlorine, are, indeed, essential to the growth of plants ; but as these substances are found in most soils, or can be supplied at a cheap rate when deficient, the chief value of an agricultural clay depends on the proportion of phosphoric acid and potash and soda, which it contains. Potash, in particular, is an essential element in all ashes of plants, and acts as most powerful manure.