Flores Torres, Carlos R.

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    Efectos de bioestimulantes para sistemas orgánicos y sustentables en limón ‘Tahití’ (Citrus latifolia Tanaka)
    (2012) Flores Torres, Carlos R.; Morales Payán, José P.; College of Agricultural Sciences; Vélez Colón, Rubén; Brunner Fulton, Bryan R.; Department of Crops and Agro-Environmental Sciences; Delgado, Bernadette
    Experiments were conducted during 2010 and 2011 in Lajas, Puerto Rico, to determine the effects of two biostimulants (agricultural formulations of an Ascophyllum nodosum extract and a blend of amino acids + potassium) on the fruit yield and quality, as well as abundance of selected pests of „Tahiti‟ lime. The two biostimulants were sprayed several times on the foliage of the Tahiti lime trees during months before and during crop flowering. Treatment trends of fruit yield response were similar in both years, although yield was lower in 2011 than in 2010, which was attributed to branch pruning after the 2010 harvest. Biostimulant treatments did not affect the abundance of aphids and the Asian citrus psyllid; as compared to the control, biostimulants did not affect leaf miners, but there were differences in the effects of amino acids and alga extracts on that pest. The biostimulants did not significantly affect time of flowering and did not enhance the concentration of chlorophyll in the leaves, fruit retention, fruit juice volume, marketable fruit number, and fruit weight. However, both biostimulants significantly reduced the pH of lime juice, and some treatments resulted in lower soluble solid concentration in the juice as compared to the control.