THE RED SPIDER ON THE AVOCADO. 



15 



RECOMMENDATIONS. 



The presence of the avocado red spider on the trees in considerable 

 numbers while the foliage is still green should be a sufficient indica- 

 tion of impending injury to cause the grower to begin immediate 

 application of control measures. The grower should not wait until 

 the foliage attacked becomes noticeably brown prematurely and 

 begins to drop. 



During the winter after the fruit has been picked use the liquid 

 lime-sulphur 1 to 60. When the temperature is above the normal and 

 the trees do not attain a thoroughly dormant condition the liquid 

 lime-sulphur should be reduced to 1 to 75. 



Fig. 11. — Spiciyins in an avocado grove with spray gun, using the long distance spray. 



If the red spiders are present while the fruit is still unpicked in 

 the fall, 40 per cent nicotine sulphate 1 to 900, with the addition of 

 2 or 3 pounds of fish-oil soap to each 100 gallons of the diluted spray, 

 will give temporary relief and will not discolor the fruit. 



Thorough application is a most essential point in combating the 

 red spider.— li haphazard work is performed and much of the 

 foliage left unsprayed, such infested foliage serves as a source of 

 reinfestation to the tree, and the mites will be more in evidence after 

 application than when thorough work has been done. 



