Effet des extraits du thé de Gambie (<i>Lippia multiflora</i> Moldenk) et du neem (<i>Azadirachta indica</i> A. Juss.) sur<i> Helicoverpa armigera</i> et les <i>Thrips</i> de la tomate (<i>Lycopersicon esculentum </i>Mill.)

Abstract

Effet des extraits du thé de Gambie (Lippia multiflora Moldenk) et du neem (Azadirachta indica A. Juss.) sur Helicoverpa armigera et les Thrips de la tomate. 8930 Effet des extraits du thé de Gambie (Lippia multiflora Moldenk) et du neem (Azadirachta indica A. Juss.) sur Helicoverpa armigera et les Thrips de la tomate (Lycopersicon esculentum Mill.

Use of Plant Biocidal Substances Based on Crataeva Religiosa Against Tuta Absoluta (Lepidoptera: Gelichiidae) Devastator of Tomato Crops

“…In addition, the soap, which seems to have a biocidal effect, could have reduced the damage due to its larvae. Especially since the work of Traoréet al [22], showed the effectiveness of plant extracts on the tomato moth.…”

Compared efficacy of two aqueous essences from leaves of <i>Calotropis procera</i> and <i>Crataeva religiosa</i> in the fight against tomato destroyers

“…A number of authors pointed out the insecticidal effect of aqueous essences from plants, among them Garba et al (2017) who precised that a 37.5 kg/ha dose of fresh leaves of Azadirachta indica and 10 kg/ha of its seed turned out to be better than reference pesticides. In the same way, according to Traore et al (2015) Ngom (2020) revealed that aqueous essences from fresh leaves of C. procera, by reducing their populations, had significant effect against C. chalcites, H. armigera, H. undalis, P. xylostella, and against winged greenflies living on cabbage farming, too. In Morocco, Abassi et al (2004) pointed out that a primary mixture of alkaloids from C. procera leaves is effective against larvae of fifth stage and against ovarian development of Schistocerca gregaria, and that a death rate of 100% had been reached after 15 days.…”

Potentials of compost, compost tea and aqueous neem leaves extract in reducing some diseased plants and boosting onion (Allium cepa L.) production in the field at Gapring-Lara in t he Department of Mayo Kani (Cameroon)

“…R (g/m²) = Mt (g)/S where, R is yield (g/m²); Mtis the total mass of bulbs; S is the surface area (m²). The yield expressed in t/ha was obtained by extrapolation using the yield/m² above (Traore et al, 2015):…”

“…Organic fertilizers such as compost and its extracts, or even plant extracts as biopesticide could be used as alternative, because of advantages they have of being biodegradable, non-persistent in the nature, inexpensive, and more accessible to small producers (Mahmoud et al, 2015). The current trend is the formulation of natural substances such as biopesticides and biofertilizers (Sagoua, 2009;Ekra, 2010;Mouria et al, 2013;Traore et al, 2015;Pale et al, 2021). Previous researches carried out in northern Cameroon have shown the effecacy of compost and their extracts in improving growth and yield as well as reducing the incidence of plant diseases (Ngakou et al, 2008;Anguessin et al, 2021).…”