. The nursery-book; a complete guide to the multiplication of plants . ES OF GERMINATION. There are three external requisites to the germinationof seeds—moisture, free oxygen, and a definite requisites are demanded in different degrees andproportions by seeds of different species, or even by seedsof the same species when differing widely in age or indegree of maturity. The supply of oxygen usually regu-lates itself. It is only necessary that the seeds shall notbe planted too deep, that the soil is porous and notoverloaded with water. Moisture and temperature, how-ever, must b
. The nursery-book; a complete guide to the multiplication of plants . ES OF GERMINATION. There are three external requisites to the germinationof seeds—moisture, free oxygen, and a definite requisites are demanded in different degrees andproportions by seeds of different species, or even by seedsof the same species when differing widely in age or indegree of maturity. The supply of oxygen usually regu-lates itself. It is only necessary that the seeds shall notbe planted too deep, that the soil is porous and notoverloaded with water. Moisture and temperature, how-ever, must be carefully regulated. Regolation of Moisture.—Moisture is the most importantfactor in seedage. It is usually ap-plied to the seeds by means of soilor some similar medium, as mossor cocoanut fiber. Fresh and vig-orous seeds endure heavy water-ings, but old and poor seeds mustbe given very little water. If thereis reason to suspect that the , water should not be ap-plied to them directly. A favoritemethod of handling weak and also i. Double very small seeds is to sow them in a pot of loose and sandyloam which is set inside a larger pot, the intermediate spacebeing filled with moss, to which, alone, the water is device is illustrated in Fig. i. The water soaks throughthe walls of the inner pot and is supplied gradually and con-stantly to the soil. Even in this case it is necessary to pre-vent soaking the moss too thoroughly, especially with veryweak seeds. When many pots are required, they may besimply plunged in moss with the same effect. The soilshould be simply very slightly moist, never wet. Moistureis sometimes supplied by setting the seed-pot in a shallowsaucer of water, or it may be sufficient to simply place itin the humid atmosphere of a propagating-box. Large butweak seeds may be laid upon the surface of the soil in ahalf-filled pot, covered with thin muslin, and then coveredwith loose and damp loam. Every day the pot is inverted
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Keywords: ., boo, bookcentury1900, bookdecade1910, booksubjectplantpropagation
