The detrimental effects of Huanglongbing (HLB) on citrus are well known and so is the need for effective methods to combat this disease. Solar thermotherapy (ST), one of the management methods to help alleviate some of the negative effects of HLB, is the process of heating trees to therapeutic temperatures by encompassing the tree within a plastic structure (Visqueen) to harness the sun's natural energy. ST was applied to mature ‘Valencia’ citrus trees in three locations. Tree vigor, yield, and Candidatus Liberibacter asiaticus (Las) titer in leaves were monitored for two consecutive seasons post ST treatment, while fruit and juice quality were evaluated at the end of the second season. ST promoted an increase in canopy density in most groves tested and did not have a significant effect on fruit quantity, despite the prolonged exposure of the trees to increased temperatures. Moreover, Las titer was reduced in both leaves and juice processed from affected trees post ST. With respect to fruit quality, the ratio of total soluble solids to titratable acidity was higher post ST compared to controls as was the sucrose content of the juice in most treated groves, whereas limonin was higher in juice from control trees. Principal components analysis of aroma volatiles showed significant differences between juice from treated versus control trees with volatiles imparting top-note and freshness to orange juice, such as acetaldehyde, hexanal, Z-3-hexenol and linalool, being higher in juice from treated trees. Taste panels confirmed that flavor differences existed, ultimately showing that ST resulted in improved juice flavor in well-managed groves. Although the effects of ST on the trees appear temporary, such outcomes emphasize its utility when used as part of an integrated management strategy for HLB-affected citrus, imparting beneficial horticultural responses with minimal to positive effects on subsequent juice flavor.

黄龙病 (HLB) 对柑橘的不利影响是众所周知的，因此需要有效的方法来对抗这种疾病。太阳能热疗 (ST) 是帮助减轻 HLB 某些负面影响的管理方法之一，是通过将树木包含在塑料结构 (Visqueen) 内以利用太阳的自然能量来将树木加热到治疗温度的过程。ST 被应用于三个地点的成熟“瓦伦西亚”柑橘树。树势、产量和候选在 ST 处理后连续两个季节监测叶片中的 Liberibacter asiaticus (Las) 滴度，而在第二个季节结束时评估果实和果汁质量。尽管树木长时间暴露在升高的温度下，但 ST 促进了大多数测试树林中冠层密度的增加，并且对果实数量没有显着影响。此外，ST 后从受影响树木加工的叶子和汁液中的 Las 滴度均降低。在果实质量方面，与对照相比，ST 后总可溶性固体与可滴定酸度的比值更高，大多数处理过的树丛中果汁的蔗糖含量也是如此，而对照树的果汁中柠檬苦素含量更高。Z -3-己烯醇和芳樟醇，在处理过的树木汁液中含量更高。品尝小组证实存在风味差异，最终表明 ST 在管理良好的树林中改善了果汁风味。尽管 ST 对树木的影响似乎是暂时的，但当用作受 HLB 影响的柑橘综合管理策略的一部分时，这种结果强调了其效用，赋予有益的园艺反应，对随后的果汁风味产生最小到积极的影响。