Aphids and citrus responses to nitrogen fertilization

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

doi:10.1016/j.jssas.2023.03.003

Cited by 4 publications

(4 citation statements)

References 28 publications

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“…Aphids are an important pest of citrus crops that can result in reduced citrus production [5]. These insects attack and damage the fruit, leaves, and stems [23].…”

Section: Discussionmentioning

confidence: 99%

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Aphid species found on citrus in Ogan Komering Ilir District, South Sumatra, Indonesia

Irsan,

Riana,

Anggraini

et al. 2024

IOP Conf. Ser.: Earth Environ. Sci.

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Citrus is an economically valuable plantation crop and has high market opportunities. In Southeast Asia, Indonesia is the second largest citrus importer after Malaysia, with an import volume of 160,254 tons; however, various obstacles limiting the cultivation of citrus plants cannot be separated from pests that can affect citrus quality and reduce citrus production. One of the obstacles is insect attacks such as aphids. Therefore, this study aims to determine the species of aphids in citrus. This research was conducted from May to June 2023 in Ogan Komering Ilir Regency using a direct observation method in the field. Observations were made on the parts attacked by aphids and symptoms of attack. The results showed that three species from 1 family of aphids were found. The species found were Toxoptera aurantii, Toxoptera citricidus, and Toxoptera citricola from the Aphididae family. The highest species found in the study was T. aurantii, with 861 individuals, and the lowest species found was T. citricola, with 29 individuals. Aphid species were found mainly on Citrus microcarpa and least on Citrus grandis.

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“…Aphids are an important pest of citrus crops that can result in reduced citrus production [5]. These insects attack and damage the fruit, leaves, and stems [23].…”

Section: Discussionmentioning

confidence: 99%

“…Aphids (Ordo Hemiptera) are one of the plant pest organisms that can be detrimental to citrus farmers [4]. This insect can be a significant pest in citrus plants [5]. Aphids attack stems, young leaves, old leaves, flowers, and fruit [6].…”

Section: Introductionmentioning

confidence: 99%

Aphid species found on citrus in Ogan Komering Ilir District, South Sumatra, Indonesia

Irsan,

Riana,

Anggraini

et al. 2024

IOP Conf. Ser.: Earth Environ. Sci.

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“…The identification results showed that the aphids were A. citricola. Many aphid species infest various ornamental plants because these insects are attracted to such plants due to the rich nutrient content in the plant sap (Braham et al 2023).…”

Section: Discussionmentioning

confidence: 99%

Species of aphids found in ornamental and wild plants in Pagar Alam District, South Sumatra, Indonesia

IRSAN,

ANGGRAINI,

RAMADHANI

2024

Biodiversitas

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Abstract. Irsan C, Anggraini E, Ramadhani W. 2023. Species of aphids found in ornamental and wild plants in Pagar Alam District, South Sumatra, Indonesia. Biodiversitas 24: 6602-6612. Aphids are one of the crucial pests in tropical and sub-tropical regions. The presence of aphids in a plant can be very detrimental due to their role as vectors. Aphids exhibit species diversity, but not much information has been reported about the species diversity of aphids associated with essential crops such as ornamental plants. Furthermore, many aphid species, such as wild plants, were found on plants that were not hosts. Therefore, this study reported the species of aphids found in ornamental and wild plants. The field research employed purposive and direct observation to inventory cultivated or wild plants hosting and collecting aphids. The plant selection process included cultivated plants encompassing ornamental plants and wild plants or weeds. The collection and identification of host plants and aphids involved systematic searches for the selected plants and subsequent examination for the presence of aphids. Observations were made to all existing plant species to find those colonized by aphids. This study revealed that a total of 15 species of aphids were found in Ornamental plants, Aphis craccivora Koch, 1854, Aphis spiraecola Patch, 1914, Aphis glycines Matsumura, 1917, Aphis gossypii Glover, 1877, Aulacorthum solani Kaltenbach, 1843, Macrosiphoniella sanborni Gillette, 1908, Macrosiphum rosae Linnaeus, 1758, Myzus persicae Sulzer, 1776, Neomyzus circumflexus Buckton, 1876, Pentalonia caladii van der Goot, 1917, Rhopalosiphum nymphaeae Linnaeus, 1761, Sinemegoura citricola van der Goot, 1917, Toxoptera aurantii Boyer de Fonscolombe, 1841, Toxoptera citricidus Kirkaldy, 1907, Toxoptera odinae van der Goot, 1917 and the total of 11 species aphids found in weeds, A. gossypii, A. craccivora, A. glycines, A. citricola, Greenidea sp., Hystroneura setariae Thomas, 1878, Hiperomyzus sp., Lipaphis erysimi Kaltenbach, 1843, Rhopalosiphum maidis Fitch, 1856, Rhopalosiphum padi Linnaeus, 1758, Schizaphis rotundiventris Signoret, 1860.

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“…Por otro lado, la tristeza de los cítricos es una enfermedad viral que afecta a las plantas cítricas, especialmente a los árboles de naranja. Se transmite por los pulgones y causa una variedad de síntomas, incluyendo decoloración de las hojas (Atta et al, 2012), reducción del tamaño de la fruta (Braham et al, 2023) y mayor susceptibilidad a otras enfermedades. La identificación y manejo de los árboles de naranja enfermos es crucial para mitigar el impacto de estas enfermedades en los huertos (Moriya et al, 2021).…”

Section: Introductionunclassified

Identification of the phytosanitary status of trees using machine learning and very high spatial resolution images

Díaz Rivera,

Aguirre-Salado,

Loredo-Osti

et al. 2024

Sci. agropecu.

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Tree diseases contribute to significant economic and food losses in the agricultural sector. Early detection of phytosanitary problems in trees with non-destructive methods is essential to guarantee sustainable orange production. This study presents the findings of a designed methodology conducted to identify diseased orange trees in an orchard situated in the citrus belt of Mexico, specifically in the Rioverde region of San Luis Potosi. To accomplish this, we captured images using a multispectral camera with very high spatial resolution, which was mounted on an unmanned aerial vehicle. These images were used to construct a georeferenced orthomosaic of the orchard. Six thematic classes were established to distinguish various health levels among the trees. We employed several supervised classification algorithms at the pixel level, including Random Forest (RF), K-Nearest Neighbor (KNN), Spectral Angle Mapper (SAM), Support Vector Machine (SVM), and Maximum Likelihood (ML). Considering the classification accuracy achieved by each algorithm, they can be ranked as follows: Maximum Likelihood (ML) with 88.10%, Support Vector Machine (SVM) with 77.38%, Spectral Angle Mapper (SAM) with 76.19%, K-Nearest Neighbor (KNN) with 64.68%, and Random Forest (RF) with 61.90%. These results successfully identified the phytosanitary status of all the trees in the orchard with an acceptable level of accuracy, providing valuable management information for the grower.

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Aphids and citrus responses to nitrogen fertilization

Cited by 4 publications

References 28 publications

Aphid species found on citrus in Ogan Komering Ilir District, South Sumatra, Indonesia

Aphid species found on citrus in Ogan Komering Ilir District, South Sumatra, Indonesia

Species of aphids found in ornamental and wild plants in Pagar Alam District, South Sumatra, Indonesia

Identification of the phytosanitary status of trees using machine learning and very high spatial resolution images

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