30 RELATION OF LIME AND MAGNESIA TO PLANT GROWTH. 
poor and meager development. From the figures given a considerable 
difference in the content of potash, lime, and magnesia will be noticed. 
Lime is increased in the latter case, while magnesia and potash are 
diminished. 
Percentage of potash, lime, magnesia, etc., in leaves and branches of chestnut tree. 
In 100 parts of ash. 
Parts of tree Total ash.| | | - 
: f | ; | -. | Phosphoric 
| a._| g 
Potash. | Lime. Magnesia. | acid. 
| Per cent. Per cent. Per cent. | Per cent. | Per cent. 
INOTmMaleleaviesee sees sees ane 4.8 21. 67 | 45. 37 | 6. 63 1s BY 
| Poorly developed leaves .....- || 5. 76 74. 55 | 3.70 | 12.50 
| sNormallbramchestasss aes ee. 47/8 11.65 | 73.26 | 3.99 | 4,53 
Poorly developed branches ... 5s Al 2.69 87.30 | 2.07 4,27 
The amount of magnesia relative to lime is considerably smaller in 
the poorly developed leaves and branches than in the normal ones of 
the chestnut, as seen from the following figures: 
Magnesia to 100 
parts lime. 
Healthy leaves cz = Sete Te ee io ie oi ae gees 14.8 
Poorlycdevelopedsleavies sa =a. a ee ee ee ee 4.9 
Healthy. bramchesiy 2 ga 58 a Uae Ceo ne generar 5.4 
Poorly developed branches ese. es.--esee eee PLE Fer oe 2.3 
A plant of special agricultural importance is the sugar beet. In 
comparing the lime and magnesia of this plant with that of others 
some data of interest are observed.’ In 1,000 parts dry matter are 
contained: 
Percentage of lime and magnesia to 1,000 parts dry matter in sugar beets and other plants. 
I. GRASSES. 
| 
Content. | Per cent. | Plants, ete. 
Minimum of magnesia .......... Lane 1.41 | Young winter wheat (2). 
Maximum of magnesia...:......--.. | 6.50 | Maize in flowering stage (7). 
PEA Gh crenotbbanay burr AeA OE Ean Sea 2.71 | Winter wheat in flowering stage (7). 
f We pabanibon Oi ney oo $55 sccascoosane 16.46 | Rye grass (7). 
II. CLOVER AND OTHER FODDER HERBS. 
| Minimum of MACIESIasssc- e255 + ee 3.34 | Seradella in the flowering stage (3). 
Maximum of magnesia...--..-----.-- 10.90 | Buckwheat, flowering (17). 
| Minimumiof limerese = eae ee 10.52 | Lupin hay (3). 
Wipro OMNI 6 go5vescssosccoac 38.61 | Red clover, flowering (13). 
III. LEAVES OF THE ROOT CROPS. 
Minimiimof magnesiaes=+-224- eee. 4.61 | Leaves of turnips (10). 
Maximum of magnesia.......-...--- 16.86 | Leaves of sugar beet (25). 
Minim motile yyeseneres sacar. 16.34 | Leaves of the common beet (18). 
WEp-abinoiou Oy home Saas gan cooccdSacR 44.52 | Carrot (8). 
1 W olff’s Tables, IT. 
