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2016
- handle: 10670/1.dtjidt
- 0378-1844
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Interciencia
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Multidisciplinarias (Ciencias Sociales) Tomato Physiology Regression Model Phenological Stages Solanum lycopersicumSujets proches
Stage Dramatics Histrionics Theatre Professional theater Stage Drama, Modern Plays Drama--Philosophy Stage HistrionicsCiter ce document
César San-Martín-Hernández et al., « Nitrogen and potassium nutrition differentially affect tomato biomass and growth », Interciencia, ID : 10670/1.dtjidt
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"We evaluated the effect of nitrogen and potassium nutrition on phenological stages on the vegetative biomass production and growth of tomato cultivated hydroponically. Nitrogen concentrations of 10, 12, 14, and 16molc·m-3 in the vegetative stage were evaluated, while potassium concentrations of 5, 7, 9, 11, and 13molc·m-3 were evaluated for the reproductive stage. In the vegetative stage, the addition of N caused significant differences in the vegetation dry biomass (VDB), with the largest responses observed at concentrations of 14 and 16molc·m-3. For the reproductive stage, a significant response was only observed for K. The 5-13molc·m-3 increases in the K concentration raised the VDB. Growth (net assimilation rate NAR, relative growth rate RGR, and crop growth rate CGR) was characterized by a quadratic behavior in the vegetative stage. In the reproductive stage, NAR and RGR exhibited an asymptotic negative trend, while CGR exhibited a positive quadratic trend. Nitrogen and potassium positively affected the growth variables evaluated in the vegetative and reproductive stages, increasing the productive potential of hydroponically cultivated tomato."