Headland micronutrients
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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. SOLUBILITY OF MAGNESIUM SALTS

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HEADLAND MICRONUTRIENTS

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Headland micronutrients

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 micronutrients1

HEADLAND MICRONUTRIENTS

  • SOLUBILITY OF MAGNESIUM SALTS

    Mg(OH)20.005 ppm

    MgSO450 ppm

    MgNO380 ppm


Headland micronutrients2

HEADLAND MICRONUTRIENTS

Trials on Headland Nitrates

  • CMI 1994 Mg tissue levels after Mg application

  • SAC 1995 Mn tissue levels after Mn application

  • Harper Adams 1995 Mn tissue levels

  • Agronomic Research Mn in Spring Oats 1996

  • JAR Geelen Research 1996 in Apples

  • Cropcare Mn in Sugar Beet 1997

  • Levington Mn in Winter Barley 1999


Headland micronutrients

Significant differences between UT, nitrates and carbonate Mn

Pre T1 Mn ppm = 17.3

Levington Agriculture 1999 on Winter Barley


Headland micronutrients

HAC 1995

Winter Barley Trial


Headland micronutrients

Trial at Harper Adams College, 1995


Headland micronutrients

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”


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