Seasonality and Phosphate Fertilization in Carbohydrates Storage: <i>Carapa guianensis</i> Aubl. Seedlings Responses

Abstract

The low availability of phosphorus and water in soil can promote the remobilization of carbohydrates in the plant, releasing energy to mitigate stress. In this context, our objective was to analyze the production and allocation of carbohydrates in plants of Carapa guianensis Aubl. submitted to different doses of phosphate fertilization, during the rainy and dry seasons, in the western region of Pará. We used three phosphorus dosages (0, 50, 250 kg ha−1) as treatments. We evaluated the plants during the dry and wet seasons. We quantified dry matter production, phosphorus content, total soluble sugars, reducing sugars, sucrose, and starch. Phosphate fertilization and different evaluation periods influenced carbohydrate concentrations (p C. guianensis seedlings were not very responsive to phosphorus addition.

Keywords

• water availability
• phosphor
• plant biomass
• carbohydrate allocation
• <i>C. guianensis</i>