BLACK LIST. A LIST OF SHRUBS ALL OF WHICH HAVE BEEN TESTED ON THE GROUNDS OF THE EXPERIMENT STATION AT MADI SON AND FOUND UNSATISFACTORY. Scientific Name. Azalea arborescens. Azalea viscosa. Azalea nudiflora. Azalea mollis... Calycanthus floridus.. Colutea arborescens. Cornus florida.... Cydonia Japonica. Daphne Cneorum.. Daphne Mezereum. Kerria Japonica. Ligustrum vulgare.. Paulownia imperialis. Prunus cerasifera var. (Prunus pissardi Hort.). Prunus Japonica. Prunus triloba. Spiraea Arguta. Spiraea Thunbergii. Common privet .....Faulownia Purple-leaved Plum . Flowering Almond . Flowering plum (double) . Arguta Spiraea Thunberg's Spiraea The plants of certain of the above named varieties made a good growth each yeaar but have not blossomed unless given thorough B. winter protection. In this class are Bladder Senna, Flowering Almond, Flowering Plum and Golden Bell. The Japanese Quince is hardy of bush but has not borne flowers except when given winter protection. The Goumi will only bear fruit when protected in winter. The double-flowered Almond will blossom freely if given thorough winter protection, otherwise it will kill back severely. The double-flowered Plum grows well and after a mild winter will bear flowers in advance of the leaves; unreliable, however, four years out of five if unprotected. The others of this list have either died outright or else barely survived. POISONS USED TO DESTROY INSECTS IN ORCHARDS AND GARDENS. PARIS GREEN A well know poison used to destroy biting insects, as the apple worm, tent caterpillar, potato bettle, etc. One-half pound of pure Paris Green to 50 gallons of water is sufficient to destroy codling moth and other insects in the orchard and fruit plantation if properly applied. Add 1⁄2 lb. Paris Green to every barrel of Bordeaux mixture and make a complete spray. ARSENATE OF LEAD. (A Poison for Biting Insects.). This poison is better than Paris Green for the following reasons: (1) It remains longer in suspension. (2) It adheres better to the foliage; one thorough application being sufficient for the entire season. (3) It may be used in any reasonable quantity without danger of injury to the foliage. Use at the rate of 2 to 3 lbs. to 50 gals. of water or Bordeaux. Add 21⁄2 lbs. of Arsenate of Lead to every barrel of Bordeaux mixture and make a complete spray. WHITE HELLEBORE. (For Biting Insects.) Used to destroy currant and cabbage worms and on fruits and vegetables where more poisonous substances cannot be used with safety. Formula Powdered white hellebore... Water ... 1 oz. 2 to 3 gals. It may also be used in the powder form mixed with flour, gypsum, soot, etc. BORDEAUX MIXTURE. The Unviersal Fungicide. Not a cure but a preventive of fungous Dissolve the copper sulfate in 25 gals. of water in one barrel or cask. Slake the lime so as to make a paste which dilute to 25 gals. in another barrel. The lime water should be strained to remove coarse particles which clog the nozzles in spraying. Pour these two solutions together into a third barrel and the resultant mixture is Bordeaux. Add 2 to 3 lbs. of Arsenate of Lead to every barrel and make a complete spray. Caution: Use only wood, copper, earthware or glass vessels in making Bordeaux. Stock Solution for Bordeaux. The above formula and directions may be followed when only small quantities are used. When ten barrels or more are used at one application always employ stock solutions. For example: Dissolve 100 lbs. sulfate in 50 gals. water. Slake 100 lbs. of lime and dilute to 50 gals. Then use the following formula: Directions for Preparation. In a kettle of at least forty gallons capacity heat twelve gallons of water. In a separate vessel mix fifteen pounds of sulphur with water enough to make a thin paste. Pour the paste into the heated water and when the mixture is near the boiling point add fifteen pounds of lime. After the lime has completely slaked, boil for one hour, stirring to prevent caking on the sides of the kettle. Then strain into the spray tank (or barrel) and add sufficient water to make fifty gallons of the mixture. Lime-sulphur wash diluted as above is used only on dormant plants. Where large quantities are used a steam cooking plant is almost a necessity. SELF-BOILED LIME AND SULPHUR. (Bulletin 213, N. J. Agr. Exp. Sta., Sept., 1908). "In this combination only the heat of the slaking lime is relied upon to unite it with the sulphur, and the formula is: Lime, best quality. Water 40 pounds. 20 pounds. 50 gallons. Place the lime in a barrel and dust in the sulphur with it, so that the two may be well mingled. Add boiling water enough to start a brisk slaking, and cover with a heavy blanket to confine the heat. Add hot water as needed to keep up the slaking and stir occasionally to aid the combination. Keep this up until the lime is fully reduced and mixed with the sulphur. Then let the combination stand covered for an hour to maintain its heat; afterward dilute with warm water to the desired strength and spray at once. It should be remembered, in making all these mixtures, that enough heat is needed to melt the sulphur and bring it into combination with the slaking lime. It matters little whether the heat comes from a fire or from slaking lime or from caustic soda. For the mixtures made without fire, the water used in slaking should be boiling hot. If cold water is used the heat of the slaking lime is used up in heating the water, and not enough remains to combine the sulphur. It is only the sulphur in combination with the lime that acts as a scale-killer. The uncombined sulphur helps nothing and the surplus lime is a positive drawback, since it makes the wash too thick to penetrate well." COMMERCIAL LIME SULPHUR. Concentrated Lime Sulphur compound is offered by several different firms. The commercial product is a clear reddish liquid and is used by diluting with cold water. |