ABSTRACT

São Francisco River Valley is the main mango Brazilian growing region, where almost 85% of Brazilian exports are produced. In this region, the fructification pruning is the first and one of the most influential cultural treatments of the productive cycle. The objective of this study was to evaluate the effect of mechanical pruning on growth, development, physiology, and yield of mango cv. Tommy Atkins grown in the tropical semiarid. An experiment was carried out in Casa Nova, Bahia, Brazil, with mangoes ‘Tommy Atkins.’ The experimental design was in randomized blocks, with two treatments (manual and mechanical pruning), evaluated in subdivided plots over time (evaluation dates), with five replications and four plants per plot. There was a significant interaction between the types of pruning and the dates of evaluation for the number of flushes emitted per branch, branch diameter, light intensity, nitrogen leaf content, leaf proline, branch proline, and branch soluble carbohydrates. Mechanical pruning increases the length of sprout and decreases the percentage of plants with symptoms of floral malformation. Mechanical pruning presented a lower production compared with manual pruning in the first evaluation cycle after continuous manual pruning, suggesting an initial impact, but with the potential for adaptation of the plants in the next productive cycles.

摘要

圣弗朗西斯科河谷是巴西主要的芒果种植区，几乎 85% 的巴西出口产品都产自该地区。在该地区，果实修剪是生产周期的第一个也是最有影响力的文化处理之一。本研究的目的是评估机械修剪对芒果品种的生长、发育、生理和产量的影响。汤米阿特金斯生长在热带半干旱地区。在巴西巴伊亚州的 Casa Nova 用芒果“汤米·阿特金斯”进行了一项实验。实验设计是随机区组，有两种处理（手动和机械修剪），随着时间的推移（评估日期）在细分地块中进行评估，每个地块有五次重复和四株植物。修剪类型与评估日期之间存在显着的交互作用，如每个分支发出的潮红数量、分支直径、光照强度、叶氮含量、叶脯氨酸、分支脯氨酸和分支可溶性碳水化合物。机械修剪增加了发芽的长度并降低了具有花畸形症状的植物的百分比。在连续手动修剪后的第一个评估周期中，与手动修剪相比，机械修剪的产量较低，这表明产生了初步影响，但有可能在下一个生产周期中适应植物。机械修剪增加了发芽的长度并降低了具有花畸形症状的植物的百分比。在连续手动修剪后的第一个评估周期中，与手动修剪相比，机械修剪的产量较低，这表明产生了初步影响，但有可能在下一个生产周期中适应植物。机械修剪增加了发芽的长度并降低了具有花畸形症状的植物的百分比。在连续手动修剪后的第一个评估周期中，与手动修剪相比，机械修剪的产量较低，这表明产生了初步影响，但有可能在下一个生产周期中适应植物。