Table 10. Vigor rating and sting nematode counts from Meyer Zoysia as influenced
 by nematocide treatments made on May 14, 1963. 1/

 Vigor 2/ tng
 rating 0 6
 Treatments Rate a.i./1000 sq. ft. 6 wks. wks. wks.
 1. U. C. 17956 0.46 Ibs. 3.5 35 28
 2. U. C. 17956 0.92 Ibs. 3.9 45 52
 3. Ethion 0.46 Ibs. 3.0 45 55
 4. Ethion 0.92 lbs. 3.9 58 28
 5. Ethion 1.84 lbs. 3.5 33 52
 6. Bayer 25141 1.84 lbs. 4.5 33 '2
 7. Bayer 25141 3.68 Ibs. 4.5 20 0
 8. Diazinon AG500 0.23 Ibs. 3.9 20 17
 9. Diazinon AG500 0.92 Ibs. 4.0 26 20
 10. Zinophos 0.37 lbs. 3.3 28 56
 11. zi pho 0.74 lbs. 4.5 35 10
 12. Penphene 0.46 ibs. 2.5 35 45
 13. Penphene 0.92 Ibs. 4.0 33 42
 14. SD 7727 0.37 lbs. 4.1 22 42
 15. SD 7727 0.74 lbs. 3.3 45 103
 16. Nellite 0.05 Ibs. 3.0 36 106
 17. Hellite 0.09 lbs. 3.5 17 28
 18. Diazinon A1619 2.80 pts. 4.5 58 5
 19. GS 33946 0.62 pts. 3.5 22 5
 20. GS 10469 1.24 pts. 3.1 33 66
 21. GS 10797 0.62 pts. 3.0 55 125
 22. GS.12286 1.24 pts. 3.5 38 145
 23. DBCP 2.00 Ibs. 4.5 30 0
 24. VC-13 2.80 Ibs. 4.0 47 70
 25. Check -3.6 33 35
 26. Check -3.0 50 83
 27. Check -3.5 47 66


 l/ test initiated by A. A. Di Edwardo.

2/ vigor rating 0-5 for dead to very vigorous respectively (the average of
 3 replications).