Abstract Tomato is a high-scale production vegetable, being today the second most produced in the world. Brazil is the largest producer of tomatoes in South America, and its cultivation is one of the most important in the category of hybrids. BRS 1509 is one of these crops that needs to be observed for behavior in the developmental phases of the plant. With this, the objective of this study is to determine the curve of nutrient uptake in tomato cv. BRS 1509. A randomized block design was used with 10 treatments, consisting of the sampling times 20, 30, 40, 50, 60, 70, 80, 90, 100 and 110 days after the transplant of the seedlings. The applied nutrients for the fertirrigations. The collected samples were fractionated in leaves, stems, fruits and roots. At this moment, the biometric parameters of the crop were determined, in which the number of leaves, fresh mass of leaves and stems, diameter and stem length, and the dry mass of these components were determined. The most absorbed nutrients were N, Ca and P, predominating their concentration in the dry mass of the fruits. The determination of the absorption curve of tomato BRS 1509 grown on coconut fiber substrates demonstrates through the sampling times the necessary amount of nutrients that must be submitted to the fertilization process and where the greatest accumulation and better productive utilization occurs.

中文翻译：

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灌溉脉冲处理下番茄 BRS 1509 的生长模型和养分吸收曲线

摘要 番茄是一种规模化生产的蔬菜，目前产量居世界第二位。巴西是南美洲最大的西红柿生产国，其种植是杂交品种中最重要的品种之一。BRS 1509 是需要观察植物发育阶段行为的作物之一。因此，本研究的目的是确定番茄品种的营养吸收曲线。BRS 1509。随机区组设计用于 10 个处理，包括幼苗移植后 20、30、40、50、60、70、80、90、100 和 110 天的采样时间。施肥灌溉施肥。收集的样品分为叶、茎、果实和根。此时，作物的生物特征参数已确定，其中测定了叶数、叶和茎的鲜重、直径和茎长以及这些成分的干重。吸收最多的营养物质是 N、Ca 和 P，它们在水果干物质中的浓度占主导地位。在椰子纤维基质上生长的番茄 BRS 1509 的吸收曲线的测定通过采样时间证明了必须提交给施肥过程的必需营养素量，以及发生最大积累和更好生产利用的地方。