Scientific Publications

Growth acceleration of Orlando; Tangelo (Citrus reticulata x Citrus paradisi) in Nurseries With a Commercial Extract of Kelp (Ascophyllum nodosum), a Commercial Amino Acid Mixture, and a Commercial N-Zn-B Fertilizer

August 2008
Posters | Terra-Sorb®
J.Pablo Morales-Payan & Santo Santiago
Department of Horticulture , University of Puerto Rico, Alzamora Farm Fruit Crops Nursery
PGRSA 35rd Meeting. San Francisco, California
Inglés

Nursery experiments were carried out in Mayagüez, Puerto Rico, to determine the effect of increasing rates of a kelp extract (StimplexTM), a commercial formulation of amino acids (Macro-Sorb RadicularTM) and a fertilizer (PhotogroTM = 2% N, 0.9% Zn and 0.9% B) on the in-nursery growth of ‘Orlando’ tangelo budded on ‘Cleopatra’ rootstock. Every two weeks, Stimplex and Macro-Sorb were applied to the soil and PhotogroTM was sprayed on the tangelo canopy. Untreated plants reached the adequate transplanting stage significantly later than biostimulant-treated plants. Tangelo responded in a similar fashion to StimplexTM and Macro-Sorb, and the time to reach adequate transplanting size was reduced as the biostimulant rates increased. Applications of StimplexTM and PhotogroTM or of Macro-Sorb and PhotogroTM accelerated the growth of tangelo more than the separate application of either StimplexTM or Macro-Sorb.

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