![]() Extrato húmico (carbono orgânico), potássio, cálcio, magnésio e enxofre foram adicionados como aditivos. indica prensadas a frio, e o D-limoneno, da casca de frutas cítricas. O óleo de nim 95% foi extraído de sementes de A. O objetivo deste trabalho foi avaliar a atividade inseticida de formulação botânica com óleo de nim ( Azadirachta indica) e D-limoneno no controle de Hypothenemus hampei, bem como determinar a composição de ácidos graxos do óleo de nim. Hypothenemus hampei alternative control coffee crop control programs mass spectrometry pest arthropods The evaluated botanical formulation is efficient in controlling H. hampei population, when compared with the control. In the field, insecticidal activity caused a 62.4% reduction in the incidence of the H. For the evaluation of insecticidal activity, the botanical formulation was applied to filter paper or topically on the insect’s dorsal side, showing a mortality of 63.34 and 100% after 48 hours, respectively. Field tests were carried out on 'Topázio MG 1190' coffee ( Coffea arabica) trees, with four applications of the formulated compound every 20 days for a period of 64 days. The analysis of neem oil by gas chromatography coupled to mass spectrometry showed that linoleic acid (49.28%) is the main fatty acid in its composition. Humic extract (organic carbon), potassium, calcium, magnesium, and sulfur were included as additives. indica seeds, and D-limonene, from citrus peel. Ninety-five percent neem oil was extracted from cold-pressed A. The objective of this work was to evaluate the insecticidal activity of a botanical formulation with neem ( Azadirachta indica) oil and D-limonene for the control of Hypothenemus hampei, as well as to determine the fatty acid composition of neem oil. Universidade Federal de Uberlândia, Instituto de Geografia, Avenida João Naves de Ávila, no 2.121, Santa Mônica, CEP 38400-902 Uberlândia, MG, Brazil. Universidade Federal de Uberlândia, Instituto de Química, Avenida João Naves de Ávila, no 2.121, Santa Mônica, CEP 38400-902 Uberlândia, MG, Brazil. E-mail: John Kenedy Rodrigues Pereira Felisbino Universidade Federal de Uberlândia, Instituto de Ciências Agrárias, Campo Demonstrativo e Experimental, Rodovia LMG 746, Km 1, Araras, s/no, CEP 38500-000 Monte Carmelo, MG, Brazil. In 1914 the University of California began work at Riverside on the factors concerned in the injury to citrus trees by petroleum distillates.Universidade Federal de Uberlândia, Instituto de Ciências Agrárias, Campo Demonstrativo e Experimental, Rodovia LMG 746, Km 1, Araras, s/no, CEP 38500-000 Monte Carmelo, MG, Brazil. This emphasized the investigations of petroleum fractions for this purpose. Reports of failure to obtain satisfactory control of California red scale by means of fumigation with HCN began to arise (32, p. The development of spray oils for citrus from these early crude substances to the highly refined oils used today involves a mixed series of modifications, some made to improve the oil insecticidally, and some made to decrease injurious effects of the oil to the tree. For some reason the use of cuts of petroleum in the light lubricating oil range as insecticides was not accepted rapidly, and experiments with distillates were continued. gine lubricating oil, was tried for the first time 011 citrus in Florida in 1906 (61). A heavier petroleum component, an en- * Assistant Entomologist, University of California Ci- ** References given at end of paper, trus Experiment Station, Riverside, California, U.S.A. Spotting of the fruit, "foliage burn" (dead leaf tissue) and loss of leaves and fruit from drop following application occurred frequently. Unrefined distillates offered a source of heavier fractions and numerous trials of such substances were made (44) **. Kerosene appears to have been the first petroleum substance employed, but it did not provide complete pest control.
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