Abstract

QUINTANA-BLANCO, Wilmer Alejandro; PINZON SANDOVAL, Elberth Hernando  and  TORRES, David Fernando. EFFECT OF THERMAL PHOSPHATE ON GROWTH AND PRODUCTION OF COMMON BEAN (Phaseolus vulgaris L.) CV 'ICA CERINZA'. rev.udcaactual.divulg.cient. [online]. 2017, vol.20, n.1, pp.51-59. ISSN 0123-4226.

The common bean is the world's most important legume for their contribution to food security. In Latin America and especially in Colombia, the bean crop is important in the rural economy, but currently the production does not meet demand, necessitating import this product. In tropical and subtropical soils areas mostly present conditions exchangeable acidity, it leads to low fertility and limitation in making elements such as phosphorus, so the use of unconventional sources of phosphorus, may represent an alternative in the availability of this element that improves the nutritional dynamics and generate good growth and crop production. Therefore, the objective of this research was to evaluate the effect of a thermal phosphate on growth and productivity of bean cv. 'ICA Cerinza' under agro-ecological conditions of the municipality of Tunja-Boyacá. Design was used completely randomized with four treatments corresponding to doses of thermal phosphate 0, 300, 600 and 900kg ha^-1 with four replications. The total chlorophyll content, leaf area, dry weight of organs, yield components and leaf phosphorus content was evaluated. Statistical differences between treatments (P≤0.05) for growth variables and the number of pods per plant were presented. Applying 600kg thermal phosphate ha^-1 showed the best results, possibly because the product characteristics such as solubility and composition, being an alternative flooring moderately acidic conditions.

Keywords : Phosphorus; legume; exchangeable acidity; thermal phosphate; mineral nutrition.

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