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Irrigation and nutrition as criteria for adequate management of Tahiti acid lime trees affected by a physiological disorder in tropical conditions
Scientia Horticulturae ( IF 3.9 ) Pub Date : 2020-08-01 , DOI: 10.1016/j.scienta.2020.109438
Liliana Rios-Rojas , Nesrine Chaali , Camilo Ignacio Jaramillo-Barrios , Sofiane Ouazaa , Jhon Fabio Correa

Abstract In Colombia, Tahiti acid lime production value ranks among the most important fruits in the country. Despite its economic importance, productivity loss in Tolima department orchards has been reported due to a physiological disorder or “phisiopathy”, related to water and nutrition stress which causes descending tissue death. This study aimed to assess the response of Tahiti acid lime trees to three irrigation treatments (based on water retention curve) combined with two nutrition doses (based on balance index between soil and leaf nutrient concentration). Variables of photosynthesis, yield, and symptom expression caused by the phisiopathy were monitored during three experimental years. The number of affected order-5 branches was quantified in five trees per treatment on a biweekly frequency. Assessment of physiological behavior of Tahiti acid lime was conducted by monitoring leaf gas exchange. The results of the water retention curve indicated that the soil moisture must be maintained above 15.6 % (at 0.5 bars) and preferably at field capacity (FC), in order to avoid water stress and thus physiological disorder. Results showed that no treatment was highlighted in terms of reducing significantly the number of affected order-5 branches for trees without phisiopathy (WOP, classified as trees with less than 50 % of branches affectation). However, in trees with (WP, trees with more than 50 % of branches affectation), a decrease in affected order-5 branches was observed as a response to T2 (applied irrigation water is between 0.33−0.5 bars with 150 % of nutrients), T3 (applied irrigation water is between 0.5−1.0 bars with 100 % of nutrients), and T6 (applied irrigation water is between 1.0–3.0 bars with 150 % of nutrients) treatments. For trees WP and WOP, the highest yield was observed by applying T2 treatment where yield value reached 2.91 t ha−1 and 5.02 t ha-1, respectively. T2 generated an improvement of the functional response of Tahiti acid lime trees represented in the increase of Gs and A, which in turn, increased fruit yield and renewed foliage during the crop season. Significant statistical differences were found in average yield (t ha-1) in tress WP and WOP, over the three experimental years (p

中文翻译:

灌溉和营养作为在热带条件下受生理障碍影响的大溪地酸椴树的适当管理标准

摘要 在哥伦比亚,大溪地酸石灰的产值是该国最重要的水果之一。尽管具有重要的经济意义,但据报道,托利马省果园的生产力损失是由于生理障碍或“生理病”,与导致组织死亡下降的水和营养压力有关。本研究旨在评估大溪地酸椴树对三种灌溉处理(基于保水曲线)结合两种营养剂量(基于土壤和叶片养分浓度之间的平衡指数)的响应。在三个实验年中监测了光合作用、产量和由 phisipath 引起的症状表达的变量。受影响的 5 阶分支的数量以每两周一次的频率在每个处理的五棵树中进行量化。通过监测叶片气体交换来评估大溪地酸石灰的生理行为。保水曲线的结果表明,土壤水分必须保持在 15.6% 以上(0.5 巴),最好保持田间持水量 (FC),以避免水分胁迫和生理紊乱。结果表明,在显着减少没有 phisiopathy 的树木(WOP,分类为树枝假象少于 50% 的树木)的受影响的 5 阶分支数量方面,没有突出处理。然而,在具有(WP,树枝假象超过 50% 的树木)的树木中,观察到受影响的 5 阶树枝减少作为对 T2 的反应(施用的灌溉水在 0.33-0.5 巴之间,养分为 150%) , T3 (施用的灌溉水在 0.5-1 之间。0 bar 与 100% 的养分)和 T6(施用的灌溉水在 1.0-3.0 bar 之间,150% 的养分)处理。对于 WP 和 WOP 树木,通过应用 T2 处理观察到最高产量,其中产量值分别达到 2.91 t ha-1 和 5.02 t ha-1。T2 提高了大溪地酸椴树的功能反应,表现为 Gs 和 A 的增加,这反过来又增加了作物季节的果实产量和更新的叶子。在三个实验年中,发束 WP 和 WOP 的平均产量 (t ha-1) 存在显着的统计差异 (p T2 提高了大溪地酸椴树的功能反应,表现为 Gs 和 A 的增加,这反过来又增加了作物季节的果实产量和更新的叶子。在三个实验年中,发束 WP 和 WOP 的平均产量 (t ha-1) 存在显着的统计差异 (p T2 提高了大溪地酸椴树的功能反应,表现为 Gs 和 A 的增加,这反过来又增加了作物季节的果实产量和更新的叶子。在三个实验年中,发束 WP 和 WOP 的平均产量 (t ha-1) 存在显着的统计差异 (p
更新日期:2020-08-01
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