Unlocking potassium mobility with POLY4
Results of a nutrient mobility study in sandy loam soil (2015)
Results of a nutrient mobility study in sandy loam soil (2015)
A nutrient mobility study conducted at the University of Florida in 2015 [1] compared POLY4 to muriate of potash (MOP) and sulphate of potash (SOP) on different soil types. This study, conducted using 30 cm soil columns under controlled conditions, demonstrated that POLY4 greatly improved potassium (K) availability in soil.
In calcareous soil, where K from MOP and SOP will quickly lock to the free sites and become unavailable, K availability with POLY4 was 3.4 times higher compared to MOP.
Results of a laboratory experiment conducted at University of Florida[1]. Tested in 30 cm soil columns. Fertilizers were compared at application rate of 300 kg K2O / ha. Soil pH = 8.4, soil texture: 83% sand, 2% silt, 12% clay (loamy sand).
In sandy loam conditions, POLY4 application led to higher and longer K availability. 99% of K applied with POLY4 was mobilised, compared to only 55% from MOP.
Results of a laboratory experiment conducted at University of Florida[1]. Tested in 30 cm soil columns. Fertilizers were compared at application rate of 300 kg K2O / ha. Soil pH = 8.1, soil texture: 88% sand, 1% silt, 11% clay (sandy loam).
Improvements in K availability by POLY4 helps plants with their development and growth as this essential nutrient remains accessible to plants in larger amounts and for a longer period.
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