A SAP Nitrate meters can be used to conduct on the spot SAP Nitrate tests, which inform you if the immediate application of nitrogen is required. The tests are best taken between the four-leaf stage and early tillering, using the basal stem of the plant. SAP Nitrate tests can be used to predict the amounts of nitrogen topdressing that may be needed and the results can be used to assist decision-making at critical stages of the season.
Further details about testing services and nutrient deficiencies are available from your nearest Hi Fert Dealer.
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