Abstract:Fertilizer applications on lawns have raised environmental concerns in many Canadian municipalities. In this greenhouse study, NO3–N leaching losses from Kentucky bluegrass (Poa pratensis L.) lawns were evaluated on two soils (a schist loam and a clay loam) and on a sand/peat moss rootzone mix (80% sand, 20% peat moss). Eight different fertilizer N sources (urea, Polyon 8 and 12‐wk release, Duration 45 and 90‐d release, XCU, corn gluten meal, and UFLEXX) were assessed at five application rates (25–200 kg N ha–… Show more
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