A Consideration of Adverse Temperatures 325 



lowed shortly by a second coating to insure a complete cover- 

 ing of every bud and twig. Usually two more applications 

 made at intervals later in the winter and spring will be 

 adequate, though if there is an unusual amount of rain, 

 other applications may be advisable. The whitewash 

 should be as thick as will pass readily through one of the 

 standard spray nozzles. It was found in the work at the 

 Missouri station that if the liquid with w^hich the slaked 

 lime is thinned in making the whitewash is about one-fifth 

 skim milk and salt is added at the rate of a pound to every 

 2^ or 3 gallons of the wash, it will adhere to the trees much 

 better than if a plain lime whitewash made with water alone 

 is used. 



Trees treated in the manner described came through the 

 winter with 80 per cent of the buds in good condition, as 

 against about 80 per cent killed where the trees were un- 

 treated. 



LAYING DOWN PEACH TREES 



The possibility as well as the practicability of laying down 

 peach trees and covering them with soil to give winter pro- 

 tection in climates that are especially severe has received 

 some attention. The method perhaps which has been the 

 most exploited and perhaps also the most satisfactory is one 

 developed in Colorado by W. B. Felton and C. C. Rickard. 

 As described by Paddock from data furnished him by 

 Rickard,^ the principal features of this method are as follows : 



''Yearling trees are set in the spring and they should be 



laid down the first winter, repeating the process each season 



during the life of the tree. In this instance no attention is 



given to training or placing the roots. As soon as the trees 



1 Col. Expt. Sta. BuU. 80. 



