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Initial soil-mix and postplanting liquid fertilization effects on nutrient concentrations in Valencia orange seedling leaves

Author

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  • Labanauskas, C. K.
  • Nauer, E. M.
  • Roistacher, C. N.

Abstract

Effects of mix composition, fertilization, and pH on citrus seedlings grown in several U.C.-type potting mixtures in containers were studied. A liquid fertilizer containing NH4NO3, KCI, and NH4H2P04 significantly increased plant top weight, eliminated micronutrient deficiency symptoms, and increased N, P, K, CI, Zn, Cu, Mn, B, and Fe concentrations in leaves to optimum levels as compared with seedlings watered with liquid fertilizer containing Ca(NO3)2, MgSO4, and KNO3, Availability of micronutrients to plants appeared to be influenced primarily by soil pH. When pH of soil-leachate was higher than 7.0, the plants exhibited more micronutrient deficiency symptoms and made considerable less growth than when pH was lower than 7.0. These findings have been successfully applied in several large scale greenhouse operations which had previously had much difficulty in producing vigorous citrus seedlings free of nutrient-deficiency symptoms.

Suggested Citation

  • Labanauskas, C. K. & Nauer, E. M. & Roistacher, C. N., 1967. "Initial soil-mix and postplanting liquid fertilization effects on nutrient concentrations in Valencia orange seedling leaves," Hilgardia, California Agricultural Experiment Station, vol. 38(15).
    • Handle: RePEc:ags:hilgar:381919
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