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essential to the determination of the supplementation of the plant with specific nutrients.
Furthermore, they have an important role in the extension services and quality
assurance. Table 1. shows the values with the corresponding deviations.
Table 1: Basic data for the nutrient content of peas, corn and wheat
Pea Corn Wheat
Mean Dev. Mean Dev. Mean Dev.
B mg kg -1 6.48± 0.7 2.79± 0.6 0.748± 0.3
Ca mg kg -1 1015± 193 119± 47 510± 69
Cu mg kg -1 7.56± 1.9 1.57± 0.3 5.05± 0.8
Fe mg kg -1 63.4± 20 27.8± 7 59.4± 36
K mg kg -1 9820± 852 3158± 276 3695± 354
Mg mg kg -1 1195± 107 1112± 118 1146± 118
Mn mg kg -1 12.1± 2.8 7.18± 1.4 37.1± 4.1
Ni mg kg -1 3.50± 2.8 0.88± 0.3 0.59± 0.3
P mg kg -1 3897± 774 3057± 454 3319± 529
S mg kg -1 2120± 135 1407± 179 1725± 193
Sr mg kg -1 5.09± 1.7 0.659± 0.2 2.73± 1.0
Zn mg kg -1 36.4± 14.0 15.2± 4.2 23.7± 8.2
Protein % % 27.0± 2.2 8.56± 1.1 14.6± 2.1
Figure 1: Deviation in % of the specific elements at pea, corn and wheat samples
The average and standard deviation values are resulted from the different fertilizations
and from the average of the 50-100 samples from several cropping sites. The extent of
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