Biochemical and Anatomical Characteristics of Some Mango Tree Cultivars Infested by Two Mealybugs, Planococcus Citri (Risso) and Icerya Seychellarum (Westood) in Egypt

Abstract

Anatomical and biochemical parameters have been studied for six mango leave cultivars (Balade, Skare, Zebda, Fagri Klan, Alphonso and Ewais) infested with two mealy bugs, Planococcus citri (Risso) and Icerya seychellarum (Westood). Ammonium humate 3% was used as a bio insecticide to control these pests during the period from April 2020 till March 2021 under field condition. Statistical analysis showed that Ammonium Humate had positive effects on reducing the populations of both I. seychellarum and P. Citri. No infestation by P. Citri was occurred on Alphonso variety while less infested by I. Seychellarum was recorded. Leaf anatomy for this mango cultivar indicated the highest number of resin canals as 14 canals. Skare and Ewais Cvs. had no infestation with I. seychellarum but P. citri was present because a high number of resin canals as 11 and 9-10 canals, respectively. Fagri Klan Cv. had the highest average mean number for I. seychellarum and p.citri populations among treated and untreated mango varieties. Strong positive correlation of Fats, Proteins, Nitrogen, Carbohydrates and Moisture % had found with the I. seychellarum especially on Balade, Zebda & Alphonso Cvs. Likewise, a strong positive correlation occurred with p. citri on Balade and Zebda Cvs. Therefore, Ammonium humate 3% could be used as a bio pesticide in the integrated pest management programs, also, the health of mango crops could be improved according to the biochemical and anatomical parameters of mango plants in this study.

Linking Phyllosphere and Rhizosphere Microbiome to the Plant–Insect Interplay: The New Dimension of Tripartite Interaction

“…The mealy bugs for cotton plants include, Phenacoccus solenopsis, Ferrisa virgata, Maconellicoccus hirsutus, etc., among which P. solenopsis is the dominant species for cotton plants in the Indian subcontinent [20]. It has been reported that the mango tree is also infected with the two types of mealy bugs, Planococcus citri and Icerya seychellarum [21]. Leaf-hoppers are also members of the Hemipteran group but belong to Cicadellidae which also causes massive crop damage in the Indian subcontinent [22].…”

Palm oil formulation as 34 % mayonnaise and evaluation of its biological efficacy against citrus mealybug, Planococcus citri under laboratory and field conditions

“…Around 69 species, including (Mangifera indica L.), are farmed in Egypt, particularly in the Ismailia Governorate (Anacardiaceae). Unfortunately, a heavy infestation of mealybugs, such as the Planococcus citri (Risso), significantly damages mango trees in all areas and decreases mango productivity (Mokhtar, 2022). Although female mealybugs acquire cushiony scales on their dorsal side, which decreases their exposure to the uptake of insecticides, mealy bugs have a cryptic character, making their management difficult and difficult ineffectual (Arshad et al, 2015).…”