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Understanding Phosphorus for Containerized Nursery Crops

9/13/2018

As seen in Nursery Management

In a 5-year study, researchers determined how much phosphorus is necessary to produce a marketable crop.

Fertility regimes for producing containerized nursery crops typically begin by amending the substrate (i.e., growing medium) with lime and/or micronutrients. The lime rate used depends on the desired pH that ensures mineral nutrients are readily available to the plant. If using a sulfate-based micronutrient fertilizer and dolomitic limestone, these routine amendments also supply plants with ample amounts of sulfur, calcium, and magnesium. The remaining macronutrients, [i.e., nitrogen (N), phosphorus (P) and potassium (K)], and possibly micronutrients, are commonly delivered as controlled-release fertilizer. A complete or incomplete liquid fertilizer is sometimes used to supplement controlled-release fertilizer when substrate electrical conductivity values—a proxy for nutrient levels—are low.

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Entender el Fosforo Para Cultivos de Viveros

En un estudio de 5 años, los investigadores determinaron cuánto fósforo es necesario para producir un cultivo comercial. Los regímenes de fertilidad para producir cultivos de vivero en contenedores generalmente comienzan modificando el sustrato ( por ejemplo, medio de crecimiento) con cal y / o micronutrientes. La tasa de cal utilizada depende del pH deseado que asegura que los nutrientes minerales estén fácilmente disponibles para la planta. Si se usan fertilizantes de micronutrientes a base de sulfato y calizas dolomíticas, estas enmiendas rutinarias también suministran a las plantas grandes cantidades de azufre, calcio y magnesio. Macronutrientes restantes, [nitrógeno Le (N), fósforo (P) y potasio (K3)], y posiblemente micronutrientes, comúnmente se entregan como fertilizante de liberación controlada. Un fertilizante líquido completo o incompleto se usa a veces para complementar el fertilizante de liberación controlada cuando el sustrato los valores de conductividad eléctrica, un proxy para los niveles de nutrientes, son bajos.

Siga leyendo en Gestión de viveros-> 

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In addition to being the nation’s largest distributor of branded fungicides, herbicides, and insecticides, Harrell’s produces custom-blended fertilizers, specialty liquids, and wetting agents. Additionally, Harrell’s is the exclusive US owner, formulator, and distributor of all POLYON® branded products.

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