Plant Lice : Aphides. 

 Burn tobacco stsms ; when the house is empty, fumigate by any 

 fumigant, such as Nos. 25 or 26. 



Thrips. 



Nikoteen 4 cc. (1 oz.) ( ,-, ^ ■ r 



w^f^.- -^ /a \-i "er 1000 cubic feet. 

 Water 150 cc. (5 fl. oz.) ( 



Mix and vaporize in the house at night ; will kill most of the 



Thrips. 



White Fly. 

 Fumigate as for Nursery Stock above, No. 25, except that instead of 

 using .2 or .25 gram of cyanid per cubic foot, use .007 to .01 gram 

 according to how tight the house is. Use the corresponding pro- 

 portions of Sulfuric acid and water, fumigate at night for three 

 hours, and then ventilate. Repeat the fumigation two weeks later. 

 This treatment must be used with caution, as tender plants may 

 under exceptional conditions be somewhat injured. 



Eel Worms. 



For eel worms on cucumbers, melons, violets, tomatoes, roses, etc., 

 change the soil or freeze or sterilize it. 



Mildews and Leaf Spots. 



Powdery and Downy Mildew and Anthracnose on cucumbers and 

 melons. Leaf blight of tomatoes (scab) can be controlled by main- 

 taining proper moisture conditions of the air, giving sufficient light 

 and ventilation and keeping water off the foliage as much as pos- 

 sible. For Rose Mildew, evaporate sulfur or paint the pipes occa- 

 sionally with a mixture of sulfur and oil. 



Stem Rots. 



For chrysanthemum stem rot prevent over-crowding, give suffi- 

 cient light and air. Carnation dry rot, select healthy cuttings ; 

 avoid planting in infected soil, extreme forcing and adverse condi- 

 tions. For Lettuce Drop and Rhizoctonia, sterilize the soil. 



Rust. 



For chrysanthemum rust, select healthy stalk ; pick oft' all rusted 

 leaves ; avoid exposure to dews and excess of moisture on the foli- 

 age. Carnation rust can be avoided by selecting rust-free, rugged 

 stalk and keeping moisture from the foliage as much as possible. 



