THE MONTHLY BULLETIN. 185 



It may be that taiiijlofoot would be equally or more effective and pos- 

 sibly cheaper. In i\Iichic:an the bands were gathered and honsed at 

 the close of the season of attack, and these were used as certainly as 

 were the pruning shears. — A. J. Cook.) 



The Harlequin Cabbage Bug. 



The harlequin cabbage bug is a bright yellow and black insect. Spots 

 where the bugs have been feeding on the leaves turn yellow: They are 

 very hard to kill. Hand-picking when adults are clustered on a few 

 plants will do away with many of them. The use of trap crops, which 

 when infested are pulled up and burned, is also advised. 



The Cabbage Worm. 



The adult cabbage worm is the common white butterfly seen in the 

 cabbage fields. From the eggr^ deposited by this butterfly are hatched 

 the velvety green worms which destroy the leaves. Before plants begin 

 heading use Paris green, one part, bran 40 parts. Mix well and dust 

 plants before worms eat in. After plants begin heading use white helle- 

 bore one ounce to two gallons of water. 



The Squash Bug. 



The squash bug is a common pest of squash and other cucurbits. 

 The insects are connnonly recognized by the brownish color above and 

 the mottled yellow beneath, and also by the offensive odor that they 

 discharge. Hand-picking the mature bugs, crushing the eggs and killing 

 the young by spraying with kerasene emulsion will aid in controlling. 

 The planting of trap hills, covering hills with netting, and trapping 

 under boards are also used. 



Alfalfa Caterpillar. 



The adult of the alfalfa caterpillar is the orange-yellow and black 

 butterfly so numerous in our alfalfa fields. The caterpillars are green 

 in color with a Avhite stripe on each side of the body. These insects do 

 a great deal of damage to alfalfa in the Imperial Valley, as well as in 

 other parts of the State. They feed on the leaves and other parts of the 

 plant. Watch for the caterpillars in the spring crop. In order to save 

 the following crop from being eaten by the caterpillars, cut the first 

 crop at the time the insects are becoming well grown (about one inch 

 in length), even if the alfalfa is not yet in bloom. This Avill destroy 

 many of them. Cut low and clean and especially along the ditch banks, 

 fences and roadsides. 



Grasshoppers. 



The work and the appearance of the grasshoppers is well known. To 

 protect young orchard trees place broad tanglefoot bands around the 

 trunks near the base. The bands must be thick or the stronger hoppers 

 will pull out. Whitewashing the trunks if renewed occasionally will 

 prevent the hoppers from crawling up into the trees to a large extent. 

 Poisoned baits placed at the base of the trees will keep most of the hop- 

 pers from ascending the trunks. The poisoned bran mash is made as 

 follows : bran 40 pounds, a cheap grade of molasses 2 gallons, arsenic 



