476 INJURIOUS AND BENEFICIAL INSECTS OP CALIFORNIA. 



BANDS 



To prevent insects from crawling' up the trunks of trees and plants 

 various bands have been devised which have proven exceedingly suc- 

 cessful in many instances. 



Tanglefoot. — Tree tanglefoot is a thick, sticky substance which, 

 when applied as a band, remains moist for several weeks and is a very 

 effective barrier against cankerworms, caterpillars, cutworms, Puller's 

 rose beetle and other crawling insects. 



The material is put up in cans. It should be applied directly to 

 the trunk of the tree several feet above the ground. 



Sticky Rope. — In the work on the California tussock moth, W. II. 

 Volck recommends the use of rope bands saturated in an easily pre- 

 pared mixture as follows : 



Castor oil 1 gallon 



Rosin 16 pounds 



The rosin and castor oil are gently heated until the former is com- 

 pletely melted. If too thick more oil may be added. The bands 

 dipped in this mixture should be replaced by new ones about every 

 ten days. 



Crude oil rich in asphaltum or a mixture of equal parts of pine tar 

 and molasses have also given satisfactory results. 



Cotton Bands. — Bands of loose cotton fastened around the trunks 

 of the trees are excellent in preventing the ascent of insects. 



Oiled Paper. — Oiled paper tied around the trunks of small vines 

 and plants is an old method which sometimes proves practical today. 



WHITEWASH 



Besides being used as a direct insecticide in many cases white- 

 wash is often used indirectly to protect the trees against sunburn 

 and thus ward off attacks of borers which seek entrance at any weak- 

 ened place. There are many formula? for preparing this mixture, 

 two of the more important of which are given below. 332 



ORDINARY WHITEWASH 



Water 2 gallons 



Quick lime 10 pounds 



The lime is placed in a pail and the water added, after which the 

 pail is covered with a couple of canvas sacks or heavy material and 

 allowed to stand for an hour. If the lime is transparent and lumpy 

 it has been scorched, due to the lack of sufficient water. After 

 slaking add enough water to bring it to a brush consistency. 



WEATHERPROOF WHITEWASH 



A more durable whitewash is prepared as follows: 



(1) Quick lime " 62 pounds 



Water (hot) 12 gallons 



(2) Common salt 2 pounds 



Sulphate of zinc 1 pound 



Water (boiling) 2 gallons 



(3) Skimmed milk 2 gallons 



33 =From "White Paints and Painting Materials," by W. G. Scott. 



