Abstract The correct nutritional balance is necessary to achieve maximum productivity and fruit quality in pineapple culture. The aim was evaluate the effects of macronutrients and boron deficiencies in pineapple ‘Vitória’, in order to profile the deficiency visual symptoms and the plants nutritional contents. The experiment was conducted from October 2016 to April 2018, in Campos dos Goytacazes-RJ, Brazil. The experimental design was random blocks, with eight treatments (complete solution, -N, -P, -K, -Ca, -Mg, -S and -B) and six replicates. The seedlings were planted in 20 L pots. Foliar contents of N, P, K, Ca, Mg, S and B were evaluated at eight, nine and sixteen months after planting. Nine months after planting, at the time of floral induction, the length, width, fresh mass and area of ‘D’ leaf were evaluated. The foliar contents found in the ‘D’ leaf at the ninth month of planting were: N: 12.5 g kg−1; P: 1.67 g kg−1; K: 29.8 g kg−1; Ca: 3.01 g kg−1; Mg: 2.60 g kg−1; S: 1.33 g kg−1 and B: 14.1 mg kg−1. Deficiencies of N, P, K, Mg and B reduced the fresh mass of ‘D’ leaf at the time of flower induction. Nitrogen deficiency caused visual symptoms on plants. Calcium and boron deficiencies reduced the firmness of the fruit peel, while nitrogen deficiency increased. Boron deficiency increased the occurrence of crooked peduncles in plants. Phosphorus deficiency reduced the diameter and length of the peduncle.

中文翻译：

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'Vitória'菠萝营养缺乏的叶含量和视觉症状

摘要 正确的营养平衡是菠萝栽培中实现最大生产力和果实品质所必需的。目的是评估宏量营养素和硼缺乏对菠萝 'Vitória' 的影响，以分析缺乏视觉症状和植物营养成分。该实验于 2016 年 10 月至 2018 年 4 月在巴西 Campos dos Goytacazes-RJ 进行。实验设计为随机区组，有八种处理（完全溶液、-N、-P、-K、-Ca、-Mg、-S 和 -B）和六次重复。将幼苗种植在 20 L 盆中。在种植后第 8、9 和 16 个月评估叶中 N、P、K、Ca、Mg、S 和 B 的含量。种植后九个月，在诱导花时，评估“D”叶的长度、宽度、新鲜质量和面积。种植第 9 个月在“D”叶中发现的叶含量为： N：12.5 g kg−1；P：1.67g kg-1；K：29.8 克 kg-1；Ca：3.01 g kg-1；镁：2.60g kg-1；S：1.33 g kg-1 和 B：14.1 mg kg-1。N、P、K、Mg 和 B 的缺乏会降低“D”叶在诱导开花时的新鲜质量。氮缺乏会导致植物出现视觉症状。钙和硼缺乏会降低果皮的硬度，而氮缺乏则会增加。缺硼会增加植物中弯曲花梗的发生。磷缺乏减少了花梗的直径和长度。Mg和B在诱导开花时减少了'D'叶的新鲜质量。氮缺乏会导致植物出现视觉症状。钙和硼缺乏会降低果皮的硬度，而氮缺乏则会增加。缺硼会增加植物中弯曲花梗的发生。磷缺乏减少了花梗的直径和长度。Mg和B在诱导开花时减少了'D'叶的新鲜质量。氮缺乏会导致植物出现视觉症状。钙和硼缺乏会降低果皮的硬度，而氮缺乏则会增加。缺硼会增加植物中弯曲花梗的发生。磷缺乏减少了花梗的直径和长度。