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  • Author or Editor: James W. Boodley x
  • HortScience x
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Abstract

How shall we define the term quality? Anyone who has worked with flowers will stress keeping quality: the prolongation of their esthetic qualities to provide the maximum benefit to the user.

Open Access

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

Changes in dry weights, total N, nitrate N, and reduced N in the aboveground parts of Chrysanthemum × morifolium Ramat. ‘Gt.#4 Indianapolis White’ were determined at intervals from planting of rooted cuttings until inflorescence maturity. Plant dry matter accumulation rate (mg/day) increased in the combined aboveground tissues with each successive harvest, while N accumulation rate (mg N/day) peaked early in the plants’ growth and decreased after the 6th week of growth. Continued dry matter accumulation in the leaves during inflorescence development suggested that photosynthetic capacity was in excess of the inflorescences’ needs. In contrast, a loss of N from the vegetative portions, and primarily the stems plus petioles, indicated that newly absorbed N was inadequate to meet the demands of the developing inflorescence. The partitioning of N between NO3 and reduced N indicated that enzymatic reduction of NO3 did not limit the availability of reduced N during inflorescence development.

Open Access

Abstract

‘Forever Yours’ roses (Rosa Hybrid Tea) were grown in recirculating nutrient solutions at 0.25, 2.5, 5.0 and 10.0 meq K/liter. Low K supply (0.25 and 2.5 meq/liter) reduced growth, flower production, and length of flowering stems. Leaf K concentration was reduced at the lowest K concentration in solution. Increasing K concentration in solution from 0.25 to 10.0 meq/liter had no antagonistic effect on the accumulation of Ca or Mg in the leaves. Plants which received 0.25 meq K/liter developed K deficiency symptoms after 5 weeks of growth in treatment solutions.

Open Access