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Table 3.

Effect of long-term application of fertilizers on soil toxicity

Option Hazard class Characteristic Effect of inhibition of roots, %
1 absent Non-toxic 0
2 absent Non-toxic 0
3 4 Low-toxic 12
4 4 Low-toxic 18

Note. 1. Control-without fertilizers. 2. N60P60K40 3. N120P60K120 4. N180P60K200

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