Maxwell Bullet Phosphite (37%)

Maxwell Bullet Phosphite (37%)

A super-concentrated form of stabilised phosphite (PO3) derived from a blend of ammonium and potassium phosphate which is taken up quickly and mobilised around the whole plant.

Maxwell Bullet Phosphite - Liquid
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Maxwell Bullet Phosphite (37%)

Bullet Phosphite provides protection for new and existing growth by assisting the plant in periods of stress, thereby aiding disease resistance via the induction of beneficial metabolic responses to pathogens. Also a potent stimulator of plant root growth.

Unlike cheaper phosphites, this formulation contains zero aluminium phosphite.


ApplicatorApplication RateWater VolumePack Size (Litres)Pack Coverage (m²)
Boom Sprayer5 - 10 ltr/ha200 - 300 ltr/ha510,000 - 5,000
Knapsack0.5 - 1.0 ml/m²20 - 30 ml/m²

Apply evenly, avoid overlapping or missing areas, using a suitable calibrated sprayer.

If there is no rain within 2 days of application irrigate the treated area thoroughly. Do not apply in hot, dry weather or frosty conditions.

Half fill the sprayer with clean water. Add concentrate as required and mix thoroughly whilst adding remaining water.


IngredientOxide ValueElemental Value
Total Nitrogen (N) 5.20%
    Ammonium (N) 5.20%
Phosphorus Pentoxide (P2O5)33.10%14.44% P
    Phosphite (PO3)37.00%14.44% P
Potassium Oxide (K2O)7.80%6.48% K
Specific Gravity1.27
pH3.0 - 5.0

Please note: Packaging may vary.

For further information regarding Maxwell Bullet Phosphite, please contact our technical sales team on .

Delivery charges (if applicable) applied at checkout. Next working day delivery is available on ‘In Stock’ items, on orders placed before 12 noon. Please allow 3-5 working days on all other orders – possibly longer during the festive season & bank holidays. Please note deliveries to more remote areas may also take longer. More delivery info Please Note: If you have any access restrictions for lorries or large vehicles please speak to our sales team on . Collection from our Naul, Co. Dublin, Trade Counter is available for this product. More info on collections