Evaluating Phosphorous Fertilization and Commercial Biostimulants for Producing Cabbage

in HortTechnology
Joseph R. Heckman Rutgers Cooperative Extension specialist, Plant Science Department, P. O. Box 231, New Brunswick, NJ 08903.

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Yield responses of `Blue Vantage' cabbage (Brassica oleracea L.) to P fertilizer and two commercially available biostimulants—ROOTS and ESSENTIAL-were evaluated on soils very high in P fertility. Head yield was not increased with P fertilizer when cabbage was transplanted into soil with Mehlich-3 soil test P indexes ≥ 112 ppm (112 mg·kg-1). Neither of the biostimlants applied as a root drench at transplanting influenced head yield or plant tissue nutrient analysis.

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