Influence of total soluble salt concentration on growth and elemental concentration of winged bean seedlings, Psophocarpus tetragonolobus (L. ) DC

Journal Article · Wed Jan 01 00:00:00 EST 1986 · Commun. Soil Sci. Plant Anal.; (United States)

DOI:https://doi.org/10.1080/00103628609367769· OSTI ID:6896938

Csizinszky, A A

Winged bean (Psophocarpus tetragonolobus) (L.) DC) seedlings of the accession TPT-1, were grown in a greenhouse with graded, balanced total soluble salt (TSS) concentrations. After 45 days, plant height increased quadratically, with a maximum (149 cm) at 3000 ppm TSS. Seedlings were shortest at 1000 and 10,000 ppm TSS, 44.0 and 79.0 cm, respectively. Fresh weight of shoots increased quadratically with greatest weight, 29.03 g, at 5000 ppm TSS. Percent dry matter increased linearly with increasing TSS. Concentration of N, K and P increased quadratically with an increase in the TSS concentration in the growth medium. Concentration of Ca decreased quadratically with increasing TSS. Among the micronutrients, Fe and Mo concentration was quadratic, both elements were highest in the seedlings at 1000 and 10,000 ppm TSS rates. Concentrations of Mn and Zn increased linearly with increasing TSS. Winged bean seedlings at the 1000 to 3000 ppm TSS rates had spindly stems and a sparse, yellow foliage, typical for winged bean seedlings observed in the field during the first 4 to 5 weeks of growth. Seedlings at the 4000 and 5000 ppm TSS rates had sturdy stems and an abundant green foliage. At higher TSS concentrations, 5000 to 10,000 ppm TSS, seedlings had short intermodes and dark green foliage.

• Research Organization: Univ. of Florida, Bradenton
• OSTI ID: 6896938
• Journal Information: Commun. Soil Sci. Plant Anal.; (United States), Vol. 17:9
• Country of Publication: United States
• Language: English

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