NORTH FLORIDA EXPERIMENT STATION
 ouincy, Florida

Table 3. Linear Correlations Relating to Soil Nomatocide and Fungicide Studies on Shade-Grown Tobacco-1965.

 Black Coarse
 Weed Plant Praty. Praty. Roty. Helico. Shank Root
 Index Height Roots Soil Soil Soil Index Index
 5/26 5/26 7/19 7/19 7/19 7/19 7/8 7/8

Weed Index (5/26) -.65 -.02 .36 .47 .50 .52 -.01
Plant Height (5/26) -.65 -.35 -.63 -.45 -.85 -.45 -.55
Pratylenchus Roots (7/19) -.02 -.35 .60 .16 .49 .15 .55
Pratylenchus Soil (7/19) .36 -.63 .60 .25 .57 .30 .52
Rotylenchulus Soil (7/19) .47 -.45 .16 .25 .28 .12 .14
Helicotylenchus Soil (7/19) .50 -.85 .49 .57 .28 .41 .65
Black Shank Index (7/8) .52 -.45 .15 .30 .12 .41 .23
Coarse Root Index (7/8) -.01 -.55 .55 .52 .14 .65 .23
Yield -.44 .88 -.47 -.77 -.35 -.82 -.40 -.66
Grade Index .35 -.03 -.52 -.15 .23 -.15 .14 -.32
Crop Index -.11 .63 -.67 -.65 -.14 -.68 -.20 -.68
Fire-Holding Capacity .66 -.21 -.05 .25 .39 .21 .67 -.09
Off-Color .57 -.70 .22 .31 .67 .59 .47 .05
Dark Wrapper -.52 .19 .36 -.01 -.39 -.07 -.25 .15
Light Wrapper .42 -.16 -.50 .09 -.14 -.10 .20 .00
Light Medium -.55 .55 -.17 -.45 -.16 -.33 -.70 .29
Top Three Grades .32 -.12 -.48 -.17 .33 -.07 -.04 -.34

 Significance of r at 5% level .58
 Significance of r at 1% level .71