caa a22 4500 386375763 CHVBK 20180307112017.0 cr unu---uuuuu 161130e198906 xx s 000 0 eng 10.1017/S1742758400003635 doi S1742758400003635 pii (NATIONALLICENCE)cambridge-10.1017/S1742758400003635 Use of Decis and Systoate for the control of Maruca testulalis (Geyer) in cowpea [Elektronische Daten] A schedule of insecticide spray combining two insecticides: Decis®(deltamethrin) and Systoate® (dimethoate) with four times of spray: 35, 45, 55 and 65 days after planting (DAP) was investigated in order to search for the most effective treatment against Maruca testulalis (Geyer) population on cowpea (Vigna unguiculata (L.) Walp). The local cowpea cultivar "Kpodjiguegue” was used to study the onset and fluctuation of M. testulalis larvae infestation on cowpea terminal shoots, flowers and pods. The trial was carried out during the 1985 early cropping season at Abomey-Cala vi. The treatments' effect on M. testulalis in the terminal shoots was not significant at the 5% level of probability because of the very low infestation of this part of the plant. In the flowers and pods, Decis® was better than Systoate® which failed in controlling this borer satisfactorily. In the unsprayed plots (i.e. control), the peak of the natural infestation occurred in the flowers towards 50 DAP and 65% of the flowers were injured. In the pods, up to 89% of infestation by M. testulalis larvae were observed 60 DAP. The lowest yield was recorded from the unprotected plots (322 kg/ha) whereas the treatment 0-Decis®Systoate®Decis® provided the highest yield (1367 kg/ha) and the highest returns. Copyright © ICIPE 1989 Decis® nationallicence Systoate® nationallicence Maruca testulalis nationallicence cowpea nationallicence fluctuation of larval populations nationallicence grain yield nationallicence Decis® nationallicence Systoate® nationallicence Maruca testulalis nationallicence niébé nationallicence fluctuation des populations larvaires nationallicence rendement en grain nationallicence Atachi P. Faculté des Sciences Agronomiques de l'Université Nationale du Benin, B. P. 526, Cotonou, Republique Populaire du Benin Sourokou B. Faculté des Sciences Agronomiques de l'Université Nationale du Benin, B. P. 526, Cotonou, Republique Populaire du Benin International Journal of Tropical Insect Science Cambridge University Press 10/3(1989-06), 373-381 1742-7584 10:3<373 1989 10 JTI https://doi.org/10.1017/S1742758400003635 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1017/S1742758400003635 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Atachi P. Faculté des Sciences Agronomiques de l'Université Nationale du Benin, B. P. 526, Cotonou, Republique Populaire du Benin NATIONALLICENCE 700 1- Sourokou B. Faculté des Sciences Agronomiques de l'Université Nationale du Benin, B. P. 526, Cotonou, Republique Populaire du Benin NATIONALLICENCE 773 0- International Journal of Tropical Insect Science Cambridge University Press 10/3(1989-06), 373-381 1742-7584 10:3<373 1989 10 JTI CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge