. Basic slags and rock phosphates . on pastures where clover plants are absent. ON BOTANICAL COMPOSITION OF HERBAGE 55 The moist season of 1920 was more favourable to the growth ofclover, and during the latter part of May and the month of Junethe plots were rapidly covered with a luxurious growth of red andwhite clover. The botanical examination of the hay crop in 1920 is set out inTable XXVIII and is illustrated in Fig. 9. Table XXVIII. Botanical Composition op the HayBY Weight at Lambouene End, 1920 Sample taken: July 17th Plotl Open hearth (fluorspar) basic slag % Plot 2 Open hearth high so
. Basic slags and rock phosphates . on pastures where clover plants are absent. ON BOTANICAL COMPOSITION OF HERBAGE 55 The moist season of 1920 was more favourable to the growth ofclover, and during the latter part of May and the month of Junethe plots were rapidly covered with a luxurious growth of red andwhite clover. The botanical examination of the hay crop in 1920 is set out inTable XXVIII and is illustrated in Fig. 9. Table XXVIII. Botanical Composition op the HayBY Weight at Lambouene End, 1920 Sample taken: July 17th Plotl Open hearth (fluorspar) basic slag % Plot 2 Open hearth high soluble basic slag % Plots No manure % Plot 4 Egyptianphosphate Plot? Open hearth (fluorspar) basic slag Wigan % Plots Open hearth high soluble basic slag Wigan % Plot 9 Cleveland phosphate % CloversGrassesWeeds 22-7 67-8 9-5 25-661-912-5 2-3*70-327-4 33-559-3 7-2 15-272-512-3 33-7 57-9 8-4 38-655-7 5-7 1000 100-0 100-0 100-0 100-0 100-0 1000 * Practically all birds foot trefoil, purple vetch and Vicia sativa. w n8070 _ 60 . PM :rJH-. FiG. 9. Botanical composition of the Hay, by weight, at Lambourne , 1920. Soil London clay. 1, Open hearth (fluorspar) basic slag. 2, Open hearth (high soluble) basic Untreated 4, Egyptian phosphate. 9, Cleveland phosphate. The results recorded in the above table simply afford anotherillustration of the effect of the various phosphates in encouraging thedevelopment of the clover plant. It would be difficult to secure poorer quahty hay than that obtainedeven on the slag plot in 1919. When conditions are favourable to thedevelopment of clover as was the case in 1920, phosphates, in addi-tion to an increased crop, produce a vastly better quahty of hay. 56 EFFECT OF PHOSPHATES Table XXIX. Botanical Composition of the Hay by Weight AT BUTTERFIELDS, LaTCHINGDON. SeASON, 1919 Soil: London clay. Sample taken: July sown: December, 1915 Plotl Basic Bessemer slag /o Plot 2 Gafsa rock phosphate /o Plots No manure o/ Plot 4 Open he
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