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and soil temperature
urban vegetable growers
Featuring 4 or 3 independent zones
NPK — read as low
NPK Soil Tester Meter for Plants | Yieryi Garden watering controller and soil temperatureAn NPK soil tester reads the three nutrients plants need mostnitrogen (N), phosphorus (P), and potassium (K)plus soil temperature. This one gives you those readings in seconds from a dual needle probe, so you can tell whether it is time to feed or hold off, without mailing a sample to a lab. Read it as a trend tool. The N, P, and K figures are a directional reference, not a lab measurementuseful for spotting when a nutrient runs low and tracking how
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