82 WILTING COEFFICIENT FOR DIFFERENT PLANTS. 



Page. 



Milo, determinations of wilting coefficient 26-30, 32, 36 



Modeling clay. See Clay. 



Moisture, available, relation to wilting coefficient 8-10, 73 



equivalent. See Equivalent, moisture. 



nonavailable, definition 8-10 



soil, interpretation of field determinations 8, 61-64 



relation to wilting and saturation coefficients 24, 66-68 



retentivity. See Retentivity. 



Morning-glory, determinations of wilting coefficient 37, 45 



Muskmelon, determinations of wilting coefficient 31, 37 



Nonavailable moisture. See Moisture, nonavailable. 



Nopalea cochenelifera, determinations of wilting coefficient 33, 37 



Oak, determinations of wilting coefficient 45 



Oats, determinations of wilting coefficient 22, 26-29, 31, 32, 35-38, 42, 65, 75 



Olive, determinations of wilting coefficient 52, 53, 54, 76 



Opuntia ficus indica. See Cactus. 



Pachyphytum aduncum, determinations of wilting coefficient 33, 37 



Paraffin, use in determining wilting coefficient 13, 14, 49, 75 



Parasites, effect on determinations of wilting coefficient 55 



Pea, Canada field, determinations of wilting coefficient 26-29, 31, 32, 36, 44 



Pearce, J. R., Briggs, L. J., and Martin, 0. F., on the mechanical analyses of 



soils 68 



Peltandra virginica, comparison with wheat by simultaneous culture 46 



Petrolatum, use in determining wilting coefficient 13, 14, 49, 75 



Plantago sp., determinations of wilting coefficient 37, 45 



Plants, comparison of wilting coefficients by simultaneous culture 39-47, 51-53 



determination of wilting coefficient by balancing method 47-53 



influence of kind on wilting coefficient 7-8, 19-22, 33-34 



See also names of different plants. 



old, wilting coefficients compared with seedlings 19-22 



various wilting coefficients 34-38 



See also names of different plants, 

 wilting point. See Point, wilting. 



Point, death, comparison with wilting point 8, 16-19 



wilting, relation to soil-moisture content 14-19, 23, 33, 74 



Polystichum acrostichoides, comparison with wheat by simultaneous culture . . 46 



Potato, determinations of wilting coefficient 37, 45 



Pots, impervious, use in determining wilting coefficient 10, 



11-14, 16, 24, 39-50, 53, 56, 75, 76 

 Pump, centrifugal, use in determining wilting coefficient 12-13 



Ranunculus septentrionalis, determinations of wilting coefficient 32, 37 



spp., comparison with wheat by simultaneous culture 46 



Rape, determinations of wilting coefficient 28, 31, 37 



Red clover. See Clover, red. 



Retentivity, soil moisture, relation of physiological to physical measure- 

 ments 7-16, 34, 56-61, 64-70, 72, 73 



See also Formulas and soil. 



Rice, determinations of wilting coefficient 22, 26-29, 31, 32, 35-38, 42, 75 



Room, dark, use in determining wilting coefficient 16, 18, 64 



Roots, distribution, relation to wilting coefficient 8, 14, 23, 35, 38, 39, 45, 54-56, 76 



Rye, determinations of wilting coefficient. 22, 26-29, 31, 32, 35-38, 75 



230 



