. The American florist : a weekly journal for the trade. Floriculture; Florists. igo8. The American Florist. 373 12'- A- vr-\ kl 1\ C::'. 2"iron sieve-cap on outer end. Wov©n-vwir e ret nf or ce rv» ent ¥ o IV qoivonized pipe -^ o O l**holes evcr-y fe' ,opening OO* opart. Ct Q *0 ^C Do SOIL STEICILIZING T£ . Cemovoble plonk front -^ Top view. :?] -1 St^ono ^ inlet ::^] Dei^forcemaiTt. 'A'pip<. End view. DETAIL OF SOIL STERILIZING TANK USED AT THE IOWA EXPERIMENT STATION. tion. which has been widely used to des- ignate this process, is really a misnomer. The term steaming th
. The American florist : a weekly journal for the trade. Floriculture; Florists. igo8. The American Florist. 373 12'- A- vr-\ kl 1\ C::'. 2"iron sieve-cap on outer end. Wov©n-vwir e ret nf or ce rv» ent ¥ o IV qoivonized pipe -^ o O l**holes evcr-y fe' ,opening OO* opart. Ct Q *0 ^C Do SOIL STEICILIZING T£ . Cemovoble plonk front -^ Top view. :?] -1 St^ono ^ inlet ::^] Dei^forcemaiTt. 'A'pip<. End view. DETAIL OF SOIL STERILIZING TANK USED AT THE IOWA EXPERIMENT STATION. tion. which has been widely used to des- ignate this process, is really a misnomer. The term steaming the soil would really be more appropriate. In applying the treatment the soil is placed in a tank through which a number of steam pipes are run. These pipes are perforated every foot or less. After the tank is filled with soil, and covered, a pressure of about 50 pounds of live steam is turned into it for a period of about two hours. Through the accumulation of heat, a temperature of from ISO" to 200° is secured. This excessive heat destroys the eggs and live nematodes. INSECTS PESTROTED. There are also certain other benefits accruing from this treatment. Eggs of plant lice and other insects are destroyed, as are also weed seeds. Certain spores of fungus diseases, such as mildew, are also killed, though it should be noted in this connection that the temperature is not suSicient to destroy the spores of some of the worst diseases the florist has to deal with, such as damping-off fungus. The treatment also has a good influ- ence in rendering more available the plant food of the soil. Heat accelerates chem- ical action, and it has been noticed that when soil is treated the growth is more vigorous, due to the fact that the or- ganic matter in the soil is more rapidly broken down and rendered available as plant food. Tlie cost of a tank, 14x4x4 feet, is as follows: 2% bW. cement ? 4-9S 214 Tcls. gravel -gp 4 16-tt. planks -J-SJ 23 ft. 46-in woven wire fencing 6-J 135 ft. lV.
Size: 1583px × 1577px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1880, booksubjectfloriculture, bookyea
