up and conducted by Dr. William J. Lord until his retirement. The trees in 

 this block received either 0, 50, or 100 lbs. of gypsum spread beneath the 



Table 1. Effects of annual gypsum applications of 80 lbs. per tree beneath the 

 canopy in the spring on fruit and leaf mineral concentrations. Cortland. 

 1977-1984. 



Element 



Treatment 



Ca (ppm fruit, 

 % d.w. leaves) 



Mg (ppm fruit, 

 % d.w. leaves) 



K (%) 



P (ppm fruit, 

 % d.w. leaves) 



Fruit 



No gypsum 

 Gypsum 



142 

 162 



303 



273 



0.63 

 0.60 



420 



417 



Significance^ 



•kiiic 



*** 



** 



n.s . 



No gypsum 

 Gypsum 



1.90 

 1.86 



Significance^ 



iiik-Jc 



*** 



n.s . 



n.s , 



'Significance: *** = odds of 999:1; ** = odds of 99:1; n.s. = not significant 



Table 2. Effects of annual gypsum applications, 1977-1984, on fruit quality, 

 Cort land . 



Factor 



No gypsum Gypsum Significance^ 



13.5 



9.3 



11.1 



3 

 5 



12 

 3 



n.s. 

 n.s ■ 

 n.s . 



*** 



•kick 



*** 

 ■k-k-k 



'Significance: *** = odds of 999:1; n.s. = not significant, 



