THE MONTHLY BULLETIN. 217 



tissue of tile hosts with their mouth parts, sucking out the juices 

 and causing the foliage to turn yellow. Plants are either soon killed 

 or dwarfed. It attacks all cruciferous plants, asparagus, beets, cherries, 

 chrysanthemums, corn, grapes, roses, potatoes, etc. 



These bugs are very hard to destroy, and hand picking, when the 

 adults are clustered on a few plants during the early part of the 

 season, will do away with many of them. Planting an early trap 

 crop of cabbage, kale, mustard or radishes, upon which the eggs are 

 laid in great numbers, and which can afterwards be destroyed, is recom- 

 mended. 



The Cabbage Worm. 



The cabbage Avorm is the worst pest of the cabbage that we have. 

 It is of European origin and has spread rapidly over the entire United 

 States. The butterflies are white, marked with black near the tips 

 of the forewings. They commence to lay their eggs soon after they 

 emerge from the resting stage, on any available cruciferous plants, 

 such as cabbage. The worms soon appear and gorge themselves very 

 rapidly on the tender leaves of the cabbage. The mature worms 

 are about 1^ inches long, are of a velvety green color, witli a faint 

 yellow stripe down the middle of the back. 



The most effective means of control is spraying with the arsenate of 

 lead, using 6 to 8 pounds of the paste form to 100 gallons of water. 

 A spreader consisting of 4 gallons of flour paste to 100 gallons of the 

 spray will make this more effective. The flour paste is made by using a 

 cheap grade of wheat flour, mixing with cold water to form a thin batter, 

 the proportions being one pound of flour to one gallon of water. This 

 is cooked until a paste forms, and is used in the above proportions. 

 Lately "Black Leaf 40," 1-1000, with soap, 4 pounds to 100 gallons 

 of the spray, has been advocated by some experimenters, and may 

 prove to be of value, inasmuch as the arsenical sprays can only be 

 applied with safety before the heads of the cabbage are half grown, 

 and often the greatest amount of damage by the larvae comes after the 

 plants have reached this stage. 



Grasshoppers. 



The work of grasshoppers in the orchard is well known. The writer 

 has seen numbers of young orchard trees which have been completely 

 girdled by these pests. The following bran mash formula, recom- 

 mended by the Kansas entomologists, has been used with much success 

 in California : 



Bran 50 pounds 



Paris greeu .3 pounds 



Lemon.s 10 fruits 



Syrup 3 quarts 



Water 5 gallons 



The method of preparation is to mix the bran and Paris green 

 thoroughly while drj^, squeeze the juices of the lemons in to 5 gallons 

 of water, chop the remaining pulp and peel to fine bits and add to the 

 water; dissolve the syrup in the water and wet the bran, pour in with 

 the mixture, stirring at the same time, so as to dampen the mash 

 thoroughly. This mash is scattered about Avhile moist wherever the 

 grasshoppers occur. 



