scholarly journals A sex attractant of the cabbage webworm, Hellula undalis Fabricius (Lepidoptera: Pyralidae).

2003 ◽  
Vol 38 (1) ◽  
pp. 45-48 ◽  
Author(s):  
Hajime Sugie ◽  
Junya Yase ◽  
Kiyotomo Futai ◽  
Yoichi Shirai
2020 ◽  
Vol 14 (5) ◽  
pp. 1600-1610
Author(s):  
Saliou Ngom ◽  
Toffène Diome ◽  
Bocar Diop ◽  
Mbacké Sembene

Au Sénégal, le chou est l’un des légumes les plus cultivés et consommés, de par son cycle relativement court (60-90 jours après repiquage) et sa possibilité d’être cultivé toute l’année. Cependant il est attaqué par plusieurs ravageurs tels que Plutella xylostella (L.) (Lepidoptera, Plutellidae), Hellula undalis (F.) (Lepidoptera, Pyralidae) et Spodoptera littoralis (B.) (Lepidoptera, Noctuidae). L’objectif de cette étude était de contribuer à la lutte contre ces ravageurs du chou en culture dans la zone des Niayes en utilisant les extraits aqueux à base de feuilles de Calotropis procera (Apocynaceae). L’étude a été menée sur 28 parcelles élémentaires dans la zone des Niayes (durant la période du 3 janvier au 22 mars 2019). Les formulations d’extrait de feuilles de C. procera utilisant comme solvant l’eau de robinet et l’eau de puits (ER et EP), appliquées à des temps différents le matin (ERM, EPM) et le soir (ERS, EPS) ont montré leurs efficacités sur les larves de P. xylostella et H. undalis. Par contre, les extraits ne sont pas efficaces sur S. littoralis (P-value= 0,672). En plus de leurs effets biocides, les extraits à base de feuilles de C. procera semblent accélérer la croissance des plants de chou. La nature du solvant et la période du traitement n’ont pas montré une différence significative.Mots clés : Biocide, Brassicassée, Niayes, lutte biologique English title: Aqueous extracts effect of Calotropis procera on the principal cabbage pests in culture in Senegal In Senegal, the cabbage is one of the most cultivated and consumed vegetables, from its relatively short cycle (60-90 days after road repair) and the possibility of being cultivated all the year. However it is attacked by several pests such as Plutella xylostella (L.) (Lepidoptera, Plutellidae), Hellula undalis (F.) (Lepidoptera, Pyralidae) and Spodoptera littoralis (B.) (Lepidoptera, Noctuidae). The objective of this study was to contribute on protect against cabbage pests in culture in the zone of Niayes by using the aqueous extracts containing sheets of Calotropis procera (Apocynaceae). The study was undertaken on 28 elementary pieces to in the zone of Niayes (during the period of January 3 at March 22, 2019). The formulations of extract using as solvent the water of tap and the water of well (ER and EP), applied to different times morning (ERM, EPM) and evening (ERS, EPS) showed their effectiveness on larvae of P. xylostella and H. undalis. On the other part S. littoralis was resistant to treatment (P=0,672) confirms it. In addition to their biocides effects, the extracts containing sheets of C procera seem accelerated the cabbage patches growth. The nature of solvent and the treatment period did not show a significant difference.Keywords: Biocide, Brassicasseae, Niayes, biological control


1979 ◽  
Vol 14 (1) ◽  
pp. 95-100 ◽  
Author(s):  
Sadahiro TATSUKI ◽  
Masaaki KURIHARA ◽  
Kyoichi ICHIUMI ◽  
Junichi FUKAMI ◽  
Yasuo FUJIMOTO ◽  
...  

2008 ◽  
Vol 43 (3) ◽  
pp. 351-358 ◽  
Author(s):  
Jun Tabata ◽  
Tomoyuki Yokosuka ◽  
Makoto Hattori ◽  
Mariko Ohashi ◽  
Hiroshi Noguchi ◽  
...  

1996 ◽  
Vol 4 (3) ◽  
pp. 331-339 ◽  
Author(s):  
Jocelyn G. Millar ◽  
Allen E. Knudson ◽  
J.Steven McElfresh ◽  
Regine Gries ◽  
Gerhard Gries ◽  
...  

1986 ◽  
Vol 21 (4) ◽  
pp. 349-354 ◽  
Author(s):  
J. C. Dickens ◽  
F. A. Eischen ◽  
A. Dietz

Electrophysiological responses of worker honey bees were recorded to a series of six to eleven carbon saturated aldehydes (100 μg dosage) including nonanal and undecanal, components of the sex attractant pheromone of the greater wax moth. Peak responsiveness occurred to heptanal, octanal, and nonanal. Dosage response curves to serial dilutions of nonanal and undecanal revealed both greater sensitivity and a larger population of acceptors responsive to nonanal. The results are discussed with regard to honey bee/greater wax moth ecology.


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