14 MISCELLANEOUS RESULTS OF WORK OF BUREAU IX. 



circumstances. In the case of the chinch bug a practice of destruc- 

 tion by burning similar to the one here mentioned has been recom- 

 mended for use under certain conditions. Cooperation among the 

 owners of adjoining farms is necessary in order to obtain the best 

 results in the attempt to check the spread of the conchuela, as well 

 as in the case of the chinch bug and many other insects, 

 i A protective measure which may in some cases be recommended, 

 especially for use in small gardens, consists in screening such crops as 

 tomatoes with a cheap quality of mosquito netting. 



REMEDIES WHEN CROPS OTHER THAN ALFALFA ARE ATTACKED. 



The subject of remedies for use in protecting cotton against damage 

 by the conchuela and related pests will be reserved for a future pub- 

 lication. When this insect attacks the seed of Milo maize and related 

 grains little can be done except when the bugs are concentrated in 

 large numbers in limited areas; then hand collecting or jarring from 

 the plants may be advisable, particularly as a protective measure 

 when such an infestation is an element of danger to neighboring 

 crops. For remedial measures against the insect when it attacks 

 garden vegetables and grapes we can suggest spraying with kerosene 

 emulsion and collecting by hand, or, if it is necessary to carry on 

 operations on a large scale, the bugs may be jarred into convenient 

 receptacles containing kerosene and water, so arranged that they can 

 be dragged between the rows if desired. 



When attacking peaches a certain proportion of the bugs can be 

 jarred from the fruit and killed on the ground, but this is at the 

 best far from satisfactory, as the fruit itself is likely to be shaken off 

 or otherwise injured and many of the bugs will escape by flying. 

 Peach trees when pruned in accordance with the practice of the lead- 

 ing growers are low enough to permit hand picking of all the fruit 

 and are correspondingly easy of fumigation. A light tent made of 

 ordinary cotton sheeting can be placed over an infested tree by the use 

 of poles and held in place at the bottom by dirt or stones. The burn- 

 ing of tobacco stems, pyrethrum, or buhach powder inside the tent 

 will soon stupefy the insects and cause them to fall to the ground, 

 where they can be easily and quickly killed. The fumes can be pre- 

 vented from escaping too readily through the cloth b}^ lightly paint- 

 ing it with linseed oil thinned with turpentine. This method of fumi- 

 gation is inexpensive and has the further advantage of requiring but 

 a few minutes' work for each tree. 



a Bui. 17, old series, Div. Ent, U. S. Dept. Agric., p. 37, 1888. 



