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. 1922 Excerpt: ...at Martin's Hearne, Latchingdon and Lambourne End. The seasons 1917 and 1919 were dry, or comparatively so, whilst those of 1916, 1918, and 1920 were moist. If the results for the two dry years on the high soluble slag plot and the Gafsa rock phosphate plot, and the corresponding results from the moist season, are ...
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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. 1922 Excerpt: ...at Martin's Hearne, Latchingdon and Lambourne End. The seasons 1917 and 1919 were dry, or comparatively so, whilst those of 1916, 1918, and 1920 were moist. If the results for the two dry years on the high soluble slag plot and the Gafsa rock phosphate plot, and the corresponding results from the moist season, are compared as is done in Table XX the influence of the season on the availability of the rock phosphates will be seen to be very pronounced. During dry seasons high soluble basic slag gives considerably better results both at Martin's Hearne and at Latchingdon. Latchingdon is in the eastern and drier portion of the county, whilst Martin's Hearne is in the western and moister section, and it is of interest to note that, as might be expected, the advantage of the high soluble slag over the Gafsa rock phosphate is greater at Latchingdon than at Martin's Hearne. The relative position of the two types of phosphate during the wet seasons is curious. At Martin's Hearne the rock phosphate has a decided advantage. It also does a trifle better at Latchingdon, but the advantage is so small as to be well within the limits of experimental error. The results at Lambourne End (Table XVIII) for the dry season of 1919 and the moist season of 1920 fully bear out the results recorded above. The soil at Martin's Hearne has considerably more organic matter in it than the soil at Latchingdon. Moreover it is a 'sour' soil, with a lime requirement of-27 %, whilst the soil at Latchingdon has a Table XX. Effect Of Rainfall On The Availability Of Rock Phosphates small reserve of calcium carbonate and has only a negligible lime requirement. It would seem therefore that, on 'sour' soils well supplied with organic matter and situated in districts with a moderately high rainfall, ...
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