THE MONTHLY BULLETIN. 729 



CALENDAR OF INSECT PESTS AND PLANT 



DISEASES. 



By E. J. VosLBRj Assistant Superintendent of the State Insectary. 



[Und'er the above heading the author aims to give brief, popular descriptions and 

 methods of controlling insect pests and plants as near as possible just prior to or at 

 the time when the suggestions given should be carried into effect by the growers.] 



KILLING THE SQUASH BUGS. 



The squash bug is a brownish-black insect with yellow spots along the 

 edges of the abdomen and has a dirty yellow venter. The young of this 

 bug, which hatch from eggs deposited by the adult in the spring on the 

 early sprouts of squash and pumpkin vines, attack and destroy the 

 young tissues of the plants. As this bug winters over in the -adult stage 

 under rubbish and among the old vines, clean culture is important. 

 At this time of the year the burning of all rubbish in the fields, espe- 

 cially the old vines, cleaning along fences and fall plowing, will greatly 

 aid in the reduction of this pest the following year. 



INSECTS IN STORED PRODUCTS. 



There are many species of insects which do much damage to stored 

 products. Among these can be mentioned the grain weevils, pea weevils, 

 the flower moths, etc. Use carbon bisulphide against these pests, the 

 vapor of which, being heavy, will go downwards, penetrating the stored 

 material to be fumigated. A tight fumigating room is an essential. 

 Pour the carbon bisulphide into shallow dishes and place in the bins, 

 using five pounds to one thousand cubic feet of space. As this fumigant 

 is highly inflammable, caution must be taken that it is not placed near 

 flames. The temperature should be 70° Fahr. or above to insure the 

 best results. Leave products in the room about twenty-four hours. 



INSECTS IN GREENHOUSES. 



Two pests very troublesome in greenhouses are the red spiders and 

 the mealy bugs. The former cause the affected leaves to turn yellow 

 and drop. They are noticed as small reddish dots on the under sides of 

 the leaves. Syringing the plants forcibly with water two or three times 

 a week, care being taken to reach the undersides of the leaves, will 

 usually suffice to keep this mite under control. The mealy bugs are 

 probably the hardest pests to fight in the greenhouse. Syringing, as 

 used against the red spider, is the most practical remedy, but will be 

 effective against the younger stages only. 



THE FRUIT TREE LEAF-ROLLER. 



The larvffi of the fruit tree leaf -roller injure the blossoms and destroy 

 the fruit and foliage of many species of plants, including apple, pear, 

 plum, cherry, apricot, quince, peach, rose, currant, raspberry and goose- 

 berry. This insect passes the winter in the egg stage. The egg masses 

 are made up of from ten to one hundred and fifty eggs covered with a 

 sticky substance deposited with the egg. They are laid most anywhere 



