Table 5 — Plant classes: nutrient and mineral values by season. Different letters in the same row within a plant class indicate a 

 significant difference in mean value 



Annual grasses Perennial grasses 



Spring Summer Fall Spring Summer Fall 



Nutrient Units (n = 17) (n = 8) (n=12) (n = 52) (n = 44) (n = 45) 



Moisture 



Percent 



43.05 



B 



1.96 



A 



11.98 



A 



36.85 



B 



24.23 



A 



21.81 A 



Nitrogen 



Percent 



2.14 



B 



1.31 



AB 



1.16 



A 



1.50 



B 



1.03 



A 



1.10 A 



Phosphorus 



Percent 



0.22 



B 



0.09 



A 



0.04 



A 



0.11 



B 



0.09 



AB 



0.06 A 



Potassium 



Percent 



1.93 



B 



0.80 



AB 



0.64 



A 



1.01 



B 



0.63 



A 



0.59 A 



Zinc 



ppm 



22.09 



B 



13.69 



A 



12.96 



A 



16.81 



B 



10.89 



A 



10.24 A 



Iron 



ppm 



449.37 



A 



479.53 



A 



772.64 



A 



306.22 



A 



388.04 



A 



391.99 A 



Manganese 



ppm 



62.41 



A 



47.61 



A 



39.69 



A 



37.21 



AB 



32.49 



A 



42.25 B 



Copper 



ppm 



7.84 



A 



8.41 



A 



6.25 



A 



5.76 



A 



5.76 



A 



5.29 A 



Calcium 



Percent 



0.65 



A 



0.57 



A 



0.79 



A 



0.49 



A 



0.47 



A 



0.57 A 



Magnesium 



Percent 



0.21 



A 



0.15 



A 



0.19 



A 



0.14 



A 



0.13 



A 



0.15 A 



Sulfur 



Percent 



0.33 



A 



0.22 



A 



0.24 



A 



0.24 



A 



0.26 



A 



0.29 A 



Sodium 



Percent 



0.009 



A 



0.011 



A 



0.007 A 



0.006 



6 



0.005 B 



0.004 A 



ADF^ 



Percent 



33.67 



A 



39.68 



AB 



42.38 



B 



42.40 



A 



46.39 



B 



45.13 B 



TNC^ 



Percent 



12.16 



A 



7.76 



A 



6.82 



A 



7.46 



A 



5.61 



A 



5.98 A 







(n=16) 



(n = 5) 



(/7= 11 



) 



{n = 46) 



(n = 44) 



(n = 36) 



Fat 



Percent 



9.37 



B 



6.46 



AB 



6.46 



A 



7.50 



B 



6.47 



AB 



5.58 A 











Annual forbs 









Perennial forbs 









Spring 



Summer 



Fall 





Spring 



Summer 



Fall 







(n = 24) 



(n = 9) 



(n = 6) 



(n = 62) 



(n = 42) 



(n - 39) 



Moisture 



Percent 



48.99 



A 



27.19 



A 



23.72 



A 



60.63 



B 



41.847 A 



32.66 A 



Nitrogen 



Percent 



2.07 



A 



1.47 



A 



1.53 



A 



2.33 



B 



1.46 



A 



1.47 A 



Phosphorus 



Percent 



0.23 



B 



0.15 



AB 



0.08 



A 



0.21 



C 



0.15 



B 



0.08 A 



Potassium 



Percent 



2.03 



B 



1.28 



AB 



0.88 



A 



2.22 



C 



1.40 



B 



1.06 A 



Zinc 



ppm 



27.04 



A 



21.16 



A 



20.25 



A 



21.16 



B 



19.36 



B 



12.96 A 



Iron 



ppm 



728.82 



A 



1,721.26 



B 



1.631.27 



AB 



234.07 



A 



327.57 



AB 



475.16 B 



Manganese 



ppm 



72.25 



A 



67.24 



A 



60.84 



A 



40.96 



A 



32.49 



A 



46.24 A 



Copper 



ppm 



7.74 



A 



9.61 



A 



7.84 



A 



7.29 



A 



6.76 



A 



O./D A 



Calcium 



Pprrpnf 



2.32 



A 



3.50 



A 



2.55 



A 



1.24 



A 



1.34 



A 



1.61 A 



Magnesium 



Percent 



0.39 



A 



0.49 



A 



0.40 



A 



0.38 



AB 



0.33 



A 



0.45 B 



Sulfur 



Percent 



0.42 



A 



0.42 



A 



0.27 



A 



0.43 



A 



0.42 



A 



0.34 A 



Sodium 



Percent 



0.009 A 



0.010 A 



0.047 A 



0.016 



A 



0.017 A 



0.017 A 



ADF' 



Percent 



33.37 



A 



33.24 



A 



43.66 



A 



31.37 



A 



39.98 



B 



41.70 B 



TNC2 



Percent 



10.82 



A 



7.11 



A 



8.96 



A 



9.74 



B 



7.34 



AB 



6.49 A 







(n = 22) 



(n = 9) 



(n = 6) 





(n = 54) 



(n = 37) 



(n = 31) 



Fat 



Percent 



9.88 



A 



6.79 



A 



5.49 



A 



8.82 



B 



8.14 



AB 



6.95 A 











Shrubs 











Succulents 









Spring 



Summer 



Fall 





Spring 



Summer 



Fall 







(n = 72) 



(n = 56) 



(n = 51) 



(n = 31) 



(n = 16) 



(n = 18) 



Moisture 



Percent 



52.02 



B 



40.13 



A 



39.37 



A 



73.87 



A 



69.87 



A 



74.69 A 



Nitrogen 



Percent 



2.39 



B 



1.71 



A 



1.66 



A 



1.44 



B 



0.83 



A 



0.85 A 



Phosphorus 



Percent 



0.18 



B 



0.12 



A 



0.10 



A 



0.15 



B 



0.08 



A 



0.07 A 



Potassium 



Percent 



2.14 



B 



1.78 



AB 



1.54 



A 



2.54 



B 



1.77 



A 



1.70 A 



Zinc 



ppm 



20.25 



C 



15.21 



B 



12.25 



A 



28.09 



B 



14.44 



A 



10.89 A 



Iron 



ppm 



190.43 



A 



275.53 



B 



190.43 



A 



123.20 



A 



143.99 



AB 



207.35 B 



Manganese 



ppm 



42.25 



A 



33.64 



A 



32.49 



A 



121.00 



A 



84.64 



A 



84.64 A 



Onnnpr 



ppm 



6.25 



A 



6.25 



A 



4.84 



A 



5.29 



A 



5.29 



A 



5.76 A 



Calcium 



Percent 



1.47 



A 



1.70 



A 



1.67 



A 



3.34 



A 



4.24 



AB 



5.14 B 



Magnesium 



Percent 



0.45 



A 



0.51 



A 



0.43 



A 



1.07 



A 



1.29 



A 



1.39 A 



Sulfur 



Percent 



0.44 



A 



0.44 



A 



0.44 



A 



0.36 



A 



0.36 



A 



0.36 A 



Sodium 



Percent 



0.011 



A 



0.015 



A 



0.014 A 



0.005 



A 



0.006 



A 



0.005 A 



ADPi 



Percent 



28.59 



A 



33.81 



B 



32.99 



B 



23.84 



A 



23.49 



A 



24.32 A 



TNC2 



Percent 



8.65 



A 



7.17 



A 



8.44 



A 



9.24 



A 



4.72 



A 



5.34 A 







(n = 64) 



(n = 52) 



(n = 44) 



(n=19) 



(n=13) 



(n=13) 



Fat 



Percent 



8.99 



A 



8.08 



A 



8.38 



A 



7.89 



A 



6.90 



A 



8.06 A 



'Acid detergent fiber. 



^Total nonstructural carbohydrates. 



6 



