Potassium thiosulphate, urea and potassium nitrate applications on vegetative and floral growth in mango 'Haden'.
Sergent E., Leal F., Anez M.
Author Affiliation: College of Agriculture, Central University of Venezuela, Maracay, Estado Aragua, Venezuela.
: 653-659
Abstract : The effects potassium thiosulfate (PTS), urea (U) and potassium nitrate (PN), alone or in combination, and PTS alternated with PN, on vegetative and floral growth were studied in an 8-year-old mango cv. Haden orchard, planted at a spacing of 4 × 4 m at the Central University of Venezuela, Aragua State (450 m a.s.l., 10° 16? N and 67° 36? W). Annual mean temperature was 25°C, and the soil was sandy loam with a neutral pH. The treatments were: control (T1); U (0.5%) applied during July and November 1997 alternated with PN (60 g/litre) during October and December (T2); PTS (4%) applied during July and November, alternated with PN during October and December (T3); and PN only during July, October and December (T4). When U was applied with PN (T2), plants grow larger than in the control. After 210 days, the most vegetative growth was observed in T3. Flowering was observed at 130 days in T4, and at 210 days in T3. T3 is recommended for mango orchard management in Venezuela.