Aphids and citrus responses to nitrogen fertilization

Q1 Agricultural and Biological Sciences

Journal of the Saudi Society of Agricultural Sciences Pub Date : 2023-09-01 DOI:10.1016/j.jssas.2023.03.003

Mohamed Braham , Synda Boulahia-Kheder , Mouna Kahia , Siwar Nouira

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引用次数: 1

Abstract

The aim of this study was to assess the effect of nitrogen mineral fertilizer on the vegetative growth of citrus as well as on the densities and population dynamics of the main aphid species Aphis spiraecola Patch (Hemiptera, Aphididae). Two trials were conducted on clementine trees, Citrus clementina Hort. ex Tan., in 2016 and 2017 in Tunisia. The quantities of nitrogen delivered varied from the control to the triple recommended dose of nitrogen (3ARD) in a complete randomized block design. Results showed that all vegetative growth parameters evaluated for the clementine trees responded positively to the amount of nitrogen supplied. The highest values were obtained with the highest Nitrogen doses in both years. A positive response also was observed for aphids for all doses, with densities increasing proportionally to Nitrogen inputs. The highest dose (3ARD) increased aphid populations by 3 times compared to the control. The aphid population dynamics differed between the two years, probably under the influence of other factors such as rainfall. Thus, too much nitrogen should be avoided in citrus orchards. The control of aphids with the aim to reduce insecticide sprays cannot be separated from the management of nitrogen fertilization.

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蚜虫和柑橘对氮肥的响应

本研究旨在探讨氮肥对柑桔营养生长的影响以及对主要蚜虫(半翅目，蚜科)密度和种群动态的影响。在小柑橘上进行了两项试验。棕褐色。2016年和2017年在突尼斯。在完全随机区组设计中，氮的递送量从对照到三倍推荐氮剂量(3ARD)不等。结果表明，供氮量对柑橘树的营养生长指标均有显著的响应。在这两年中，氮剂量最高的年份获得最高的数值。对所有剂量的蚜虫也观察到积极的反应，其密度随氮输入成比例地增加。最高剂量(3ARD)使蚜虫数量比对照增加3倍。两年间蚜虫种群动态不同，可能受降雨等其他因素的影响。因此，应避免在柑橘果园中施用过多的氮。以减少杀虫剂喷洒为目的的蚜虫防治不能脱离氮肥的管理。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of the Saudi Society of Agricultural Sciences Agricultural and Biological Sciences-Agricultural and Biological Sciences (all)

CiteScore

8.70

自引率

0.00%

发文量

审稿时长

17 days

期刊介绍： Journal of the Saudi Society of Agricultural Sciences is an English language, peer-review scholarly publication which publishes research articles and critical reviews from every area of Agricultural sciences and plant science. Scope of the journal includes, Agricultural Engineering, Plant production, Plant protection, Animal science, Agricultural extension, Agricultural economics, Food science and technology, Soil and water sciences, Irrigation science and technology and environmental science (soil formation, biological classification, mapping and management of soil). Journal of the Saudi Society of Agricultural Sciences publishes 4 issues per year and is the official publication of the King Saud University and Saudi Society of Agricultural Sciences and is published by King Saud University in collaboration with Elsevier and is edited by an international group of eminent researchers.