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  • Author or Editor: Raymond Sheldrake Jr. x
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Abstract

Chrysanthemum morifolium Ramat. cv. Indianapolis White No. 4 plants grown in Hoagland's solution from which B was deleted and withheld for various periods prior to flowering developed a necrotic halo in the floral parts. The B concentration of leaves of plants showing B deficiency symptoms in flowers at harvest, was well within the range considered adequate for chrysanthemums.

Open Access

Abstract

Lime or activated charcoal effectively reduced fluoride absorption and increased plant dry weight in lettuce (Lactuca sativa L.), perennial ryegrass (Lolium perenne L.), and spinach (Spinacia oleracea L.) grown in a fertilized perlite-peat moss medium. Lime in combination with charcoal surpassed that of charcoal alone in reducing fluoride absorption and increasing yields. While the addition of lime or charcoal raised the pH of the growth medium only the lime greatly reduced water-soluble fluoride.

Open Access