Calculating the rate of nutrient applied per hectare on planting seed is easy. Simply multiple the nutrient seed treatment rate (L/tonne) by the nutrient analysis of the product and then by seeding rate, e.g.
YaraVita Zintrac is 70% (w/v) zinc and recommended application rate to wheat – 4 L/tonne
Seeding Rate 100 Kg/ha
Zinc applied (g/ha) = Seeding rate (Kg/ha) x Zinc seed treatment rate (L/tonne) x YaraVita Zintrac analysis (%) / 100
= 100 Kg/ha x 4L/tonne x 70% /100
= 280 g/ha
Using YaraVita Zintrac allows useful quantities of zinc to be applied on seed. Lower analysis zinc seed treatment products struggle to apply adequate quantities of zinc (table below) since application rates are generally limited to 3-4 L/tonne of grain as an addition volume of 1-3 L/tonne is applied with plant protection products and water.
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