. Agricultural news. Agriculture -- West Indies; Plant diseases -- West Indies. Fit 17. Water Rises in A Plant— FiG. 18. And THE RISE OF WATER IN SOIL> AND PLANTS. Soil Temperature in Its Relation to Plant Growth.—The following interesting account of a paper on this subject, taken from the Station Ricord (July ) is of interest in connexion with observations of a somewhat similar nature made some time ago in the West Indies:— This article [under review] gives inves- tigations on the above subject, discussing particularly soil temperature as a plant biological and geograph
. Agricultural news. Agriculture -- West Indies; Plant diseases -- West Indies. Fit 17. Water Rises in A Plant— FiG. 18. And THE RISE OF WATER IN SOIL> AND PLANTS. Soil Temperature in Its Relation to Plant Growth.—The following interesting account of a paper on this subject, taken from the Station Ricord (July ) is of interest in connexion with observations of a somewhat similar nature made some time ago in the West Indies:— This article [under review] gives inves- tigations on the above subject, discussing particularly soil temperature as a plant biological and geographical factor, the relation of soil temperature to phenologi- es cal phenomena, the influence of geogra- f/^phical position and sealevel upon vegeta- -"tion and soil temperature, anil the rela- tion of the coming of spring to a tempera- ALSO IN TiiK Soil. ture of 10°C. in the soil and the duration of sunshine. The author concludes that there is a direct relation between soil temperature and the coming of spring. A defi-. Turning from these economic ? onsiderations to others connected with agricultural chemistry, an interesting reflection is to contrast the difference between the rise of water in the soil and that in a growing plant. In each case water ascends at different rates according to the kind of soil, and according to the kind of plant. This can be shown by conducting experiments by means of the simple, homemade apparatus shown in Figs. 17 and 18. Details concerning the working of this apparatus must be obtained from local sources, or from a book on elementary agricultural chemistry: {XtMare ?'<?,),•/"/'^ would be a suitable source to refer to). ciency of TC. in the average soil temperature at depths of from i to 1 metre in March and April delays spring ten days. The blooming of apples coincides closely with the appearance of a temperature of lO'C. in the soil at a depth of i-metre. A decrease in the average daily duration of sunshine of one hour duri
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