HEADLAND MICRONUTRIENTS èRange based on Nitrates, Carbonates and Sulphates è Nitrates: Jett (200 g/l Mn) Emporer (150g/l Cu) Prince (80g/l Mg) è Carbonates:

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Presentation transcript:

HEADLAND MICRONUTRIENTS èRange based on Nitrates, Carbonates and Sulphates è Nitrates: Jett (200 g/l Mn) Emporer (150g/l Cu) Prince (80g/l Mg) è Carbonates: Classic (500 g/l Mn) è Sulphates: Zinc (150 g/l Zn), Mn 15% èFlagship Technology based around MICROs in Nitrate form

HEADLAND MICRONUTRIENTS PLANTS CAN ONLY ACCEPT NUTRIENTS IN SOLUTION DIFFERENT SALTS HAVE VARYING LEVELS OF SOLUBILITY NITRATES SULPHATES HYDROXIDES OXIDES CARBONATES Increasing Solubility Increasing Plant Availability

HEADLAND MICRONUTRIENTS èSOLUBILITY OF MAGNESIUM SALTS Mg(OH) ppm MgSO 4 50 ppm MgNO 3 80 ppm

HEADLAND MICRONUTRIENTS Trials on Headland Nitrates è CMI 1994 Mg tissue levels after Mg application è SAC 1995 Mn tissue levels after Mn application è Harper Adams 1995 Mn tissue levels è Agronomic Research Mn in Spring Oats 1996 è JAR Geelen Research 1996 in Apples è Cropcare Mn in Sugar Beet 1997 è Levington Mn in Winter Barley 1999

Levington Agriculture 1999 on Winter Barley Pre T1 Mn ppm = 17.3 Significant differences between UT, nitrates and carbonate Mn

HAC 1995 Winter Barley Trial

Trial at Harper Adams College, 1995

At 400 g/ha Jett gave significantly greater yield than untreated, whereas Mn Sulphate was not significantly different from untreated Since there were no differences in Mn content between Mn sulphate and Jett it is difficult to explain the better performance of Jett at 400 g/ha