Utilization of plant waste as botanical pesticide for citrus pest control

Abstract

Organic wastes from plants that contain certain secondary metabolite compounds can be used as botanical pesticides. In this study, the plant wastes used were chrysanthemum flower, JC citrus peel and foliage of tobacco. The botanical pesticides were tested for their effectiveness against the main pests of citrus that were citrus psyllid Diaphorina citri and citrus aphids Toxoptera citricidus. The study aimed to determine the effectiveness of botanical pesticides from plant wastes against both target pests. The three materials were extracted and processed by maceration method with methanol solvent. The test was arranged in a Randomized Block Design consisting of 12 treatments, that were the test concentration for each ingredient was 0.5 %; 0.75 % and 1 %, comparative chemical insecticides dimethoat and imidacloprid, and control. The treatment consisted of two units for each target pest and repeated 4 times. The test results showed that the botanical insecticide from tobacco foliage was the most effective against both target pests compared to those from chrysanthemums flower and JC citrus peel. The insecticide tested was more effective against citrus aphids T. citricidus compared to citrus psyllid D. citri, as evidenced by the shorter time to achieve the mortality. For tobacco insecticides, further testing with lower concentrations is needed to determine the exact and effective test concentration, so that the use of materials is more efficient.

Advances in research and utilization of botanical pesticides for agricultural pest management in Inner Mongolia, China

“…Organic acid pesticides also have some disadvantages; most natural compounds are too complex to be artificially synthesized or too expensive to prepare, the active ingredients are easy to dissolve, and the drug ingredients are complex and cannot be standardized. Additionally, the impact of botanical pesticides is slow, some farmers think that the pesticides they use lack efficacy ( Wuryantini, Endarto, Wicaksono, & Yudistira, 2021 ). However, organic acid pesticides also have advantages that cannot be ignored, namely that the effective components of organic acid pesticides are natural substances, not synthetic chemicals, which will naturally degrade and will not pollute the environment after use.…”

Preučevanje nihanja napada agrumovega ščitkarja (<i>Dialeurodes citri</i> [Ashmead, 1885]) in njegovih plenilcev v ekološki pridelavi pri različnih podnebnih razmerah: vzorčna raziskava iz severozahodne Alžirije

“…Indeed, chemical treatment has been one of the best management strategies for controlling the citrus whitefly (Yuan et al, 2017). However, pesticides can have a negative effect on natural enemies and sustainability of crop systems (Corallo et al, 2021).Several environmentally friendly approaches have been developed to control citrus pest (Wuryantini et al, 2021). In the biological control of pests in citrus orchards, predatory insects can play a decisive role and can be a good alternative to chemical treatment (Rattanapun, 2017;Ahmed & Azmat, 2019;Oke et al, 2020;Smaili et al, 2020;Mansour et al, 2021).…”