Once soluble fertilizers get wet, available all at once.
2. Fast acting fertilizers flood roots with only a few nutrients.
3. High solubility fertilizers = pollution potential
Only 30 - 50% fertilizers may reach plant
4. Fast acting fertilizers cause pest problems
Management Problems with High Solubility Nitrogen Fertilizers
Nutrient Source Advantage Disadvantage Greenwaste - Wide range of nutrients - Generated on-site: saves transport fees - No purchase costs - Compatible with existing soil micro-organism population - Low N-P-K value - May require shredding or composting, depending upon use - Slow release of nutrients Organic fertilizer - Wide range of nutrients - Benefits soil micro-organism populations - Low labor costs with infrequent app needs - High material costs Synthetic fertilizer – Slow release - Low labor costs with infrequent application needs - Narrow range of nutrients - High material costs - Potentially destructive to soil micro-organism populations Synthetic fertilizer –Fast release - Inexpensive material costs - Immediate plant response - Narrow range of nutrients - High labor costs w/ frequent apps. - Potentially destructive to soil micro-organism populations - Benefit only lasts a month - Potential to make plants more susceptible to pest problems