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Addition of foam to peat substrates. Experiments with substrates for azaleas and ericas


, : Addition of foam to peat substrates. Experiments with substrates for azaleas and ericas. Gb + Gw 77(36): 862-864

The addition of Hygromull (urea formaldehyde), Styromull (a polysterol foam) or Hygropor (a compound product of both) to peat increases water holding capacity and water availability to plants with a simultaneous increase in aeration, resulting in improved plant quality. Foam substrates should not be used alone or for mulching because of formalin leakage. The addition of Hygropor to peat resulted in 90.6% rooting of pelargonium (cv. W.S. Koniger) cuttings compared with 56.9% with sand.

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