lertili/ingaiul Watering Trees 23 



Watering 



1. Prepareadike 'i — 4 inches high around the planting hole 

 of a recently planted tree or shrub. During the grow ing 

 season and until the root system has become established, fill 

 this dike with water at 7- to 10-day intervals. 



2. During droughts or during extended dry periods in the 

 summer, water established trees with a lawn sprinkler at 

 intervals of 2—3 weeks. Each watering should be the 

 equivalent of 2 inches of rainfall. 



Selected references 



Fertilizer-plant relationships 



Brady, N.C. 1984. The nature and properties of soils, 9th ed. Collier 

 Macmillan Publishers, London. 750 p. 



Donahue, R.L., R.VV. Miller, and J.C. Shickluna. 1983. Soils: an 

 introduction to soils and plant growth, 5th ed. Prentice-Hall 

 Inc., Englewood Cliffs, New Jersey. 667 p. 



Foth, H.D. 1984. Fundamentals of soil science, 7th ed. John Wiley 

 and Sons, New York. 435 p. 



Jones, U.S. 1979. Fertilizers and fertility. Reston Publishing 

 Company, Reston, Virginia. 368 p. 



McVickar, M.H., and W.M. Walker. 1978. Using commercial 

 fertilizers, 4th ed. Interstate Printers and Publishers, Danville, 

 Illinois. 363 p. 



Thompson, L.M.,and F.R. Troeh. 1978. Soils and soil fertility, 4th 

 ed. McGraw Hill Book Company, New York. 516 p. 



Tisdale, S.L., W'.L. Nelson, andJ.D. Beaton. 1985. Soil fertility and 

 fertilizers, 4th ed. MacMillan Publishing Company, Inc., New 

 York. 754 p. 



Tree fertilization experiments 



Chadwick, L.C. 1935. The fertilization of shade trees in the nursery. 

 Proceedings of the .American Societv for Horticultural Science 

 32:357-360. 



Chadwick, L.C. 1937. Fertilizer trials with shade trees in the 



nursery. Proceedingsof the .American Society for Horticultural 

 Science 34:664-668. 



