Kentucky bluegrass selections at Beltsville, Md., show differences in disease resistance. Light-colored plots have 
been severely damaged. 
N-15684 
N-17964 
Plot being prepared for planting vegetative cores of Meyer 
zoysia. Many critical questions on the growth and deyvel- Problems in commercial sod production receive too little 
opment of turfgrasses remain unanswered. attention in turf research programs. 
