Coloidal samples in agriculture

Coloidal samples in agriculture

1. Fertilizers

   • Improve growth and productiveness of plants
     • Natural
       • colloid sols (Liquid dispersing phase)
         • Favours retention of water and nutrients
           • Manure
           • Compost
           • Green manure
         • Suspension
           • Potash
             • Liquid dispersing medium and solid dispersed phase
     • Artificial
     • Properties meassured by P-NMR
       • Composition
         • nonlabile hydroxyapatite (16.8–19.7%)
         • Al-associated P (total 70.4–83.3%)

2. Pesticides

   • Kill, repel or attract pests
     • Examples
       • Alpha-cypermethrin (Standart water medium)
         • A minimum of 60% of the alpha-cypermethrin content found under 2.2 shall be in suspension after 5 min in standard water at 30 ± 2°C.
       • Paraquat

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