[ Comparaison des niveaux d’infestation des variétés de cotonnier en l’absence de traitement phytosanitaire à Gobé et à Angaradebou au Bénin ]
Volume 21, Issue 2, September 2017, Pages 239–246
Cocou A. DJIHINTO1, Saliou BELLO2, Augustin KOUDAMILORO3, and Gustave BONNI4
1 Institut National des Recherches Agricoles du Bénin, 01BP 884 Cotonou, Benin
2 Institut National des Recherches Agricoles du Bénin, 01BP 884 Cotonou, Benin
3 Africa Rice Center (AfricaRice), 01 BP 2031 Cotonou, Benin
4 Institut National des Recherches Agricoles du Bénin, 01BP 884 Cotonou, Benin
Original language: French
Copyright © 2017 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
In the objective to identify the less infested cotton varieties by insects, infestation levels in absence of insecticide treatment of 12 varieties in Gobé in centre of Bénin and of 26 varieties in Angaradebou in the north of the country have been evaluated in research station in a complete randomized block design with 5 repetitions in Gobé and 6 repetitions in Angaradebou. The infestation levels of insects (Helicoverpa armigera, Diparopsis watersi, Earias spp, Spodoptera littoralis) which damage cotton reproductive organs were significantly low on GIZA 77, PNS 47 I UI, T1219-153 and SAHR varieties. The infestations of Aphis gossypii, one of the principal insects which damage cotton leaves, were significantly low on MNH 93, LAHG 063, PNS 121 II V-S and R1 R2 Y1 P1 L02 varieties. Agronomic characteristics of the varieties such as number of bolls per plant, quantity of seed cotton per boll, quantity of seed cotton per plant, quantity of seed cotton per hectare and infestation levels of cotton varieties in comparison in Gobé and in Angaradebou showed that the PNS III H H PNS 70 variety was the less infested variety which produced seed cotton per hectare significantly higher than those observed in STAM 18 A.
Author Keywords: varieties, cotton, infestation, insects, Benin.
Volume 21, Issue 2, September 2017, Pages 239–246
Cocou A. DJIHINTO1, Saliou BELLO2, Augustin KOUDAMILORO3, and Gustave BONNI4
1 Institut National des Recherches Agricoles du Bénin, 01BP 884 Cotonou, Benin
2 Institut National des Recherches Agricoles du Bénin, 01BP 884 Cotonou, Benin
3 Africa Rice Center (AfricaRice), 01 BP 2031 Cotonou, Benin
4 Institut National des Recherches Agricoles du Bénin, 01BP 884 Cotonou, Benin
Original language: French
Copyright © 2017 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
In the objective to identify the less infested cotton varieties by insects, infestation levels in absence of insecticide treatment of 12 varieties in Gobé in centre of Bénin and of 26 varieties in Angaradebou in the north of the country have been evaluated in research station in a complete randomized block design with 5 repetitions in Gobé and 6 repetitions in Angaradebou. The infestation levels of insects (Helicoverpa armigera, Diparopsis watersi, Earias spp, Spodoptera littoralis) which damage cotton reproductive organs were significantly low on GIZA 77, PNS 47 I UI, T1219-153 and SAHR varieties. The infestations of Aphis gossypii, one of the principal insects which damage cotton leaves, were significantly low on MNH 93, LAHG 063, PNS 121 II V-S and R1 R2 Y1 P1 L02 varieties. Agronomic characteristics of the varieties such as number of bolls per plant, quantity of seed cotton per boll, quantity of seed cotton per plant, quantity of seed cotton per hectare and infestation levels of cotton varieties in comparison in Gobé and in Angaradebou showed that the PNS III H H PNS 70 variety was the less infested variety which produced seed cotton per hectare significantly higher than those observed in STAM 18 A.
Author Keywords: varieties, cotton, infestation, insects, Benin.
Abstract: (french)
Dans l’objectif d’identifier les variétés de cotonnier moins attaquées par les ravageurs, les niveaux d’infestation en l’absence des traitements phytosanitaires de 12 variétés à Gobé au centre du Bénin et de 26 variétés à Angaradebou au nord du pays ont été évalués sur station de recherche dans un dispositif de bloc aléatoire complet avec 5 répétitions à Gobé et 6 répétitions à Angaradebou. Les niveaux d’infestation des ravageurs des organes de reproduction du cotonnier (Helicoverpa armigera, Diparopsis watersi, Earias spp, Spodoptera littoralis) étaient significativement faibles sur quatre variétés GIZA 77, PNS 47 I UI, T1219-153 et SAHR. Les infestations de Aphis gossypii, l’un des principaux ravageurs des feuilles du cotonnier, étaient significativement faibles sur quatre variétés MNH 93, LAHG 063, PNS 121 II V-S et R1 R2 Y1 P1 L02. Les caractéristiques agronomiques des variétés comme le nombre de capsules par plant, la quantité de coton graine par capsule, la quantité de coton graine par plant, la quantité de coton graine par hectare et les niveaux d’infestation des variétés du cotonnier mises en comparaison à Gobé et à Angaradebou ont montré que PNS III H H PNS 70 était la seule variété moins infestée par les ravageurs et qui procure un rendement en coton graine significativement supérieur à celui de la variété de référence STAM 18 A dans cette étude.
Author Keywords: variétés, cotonnier, infestation, insectes, Bénin.
How to Cite this Article
Cocou A. DJIHINTO, Saliou BELLO, Augustin KOUDAMILORO, and Gustave BONNI, “Comparison of infestation levels of cotton varieties in absence of insecticide treatment in Gobé and in Angaradebou from Benin,” International Journal of Innovation and Applied Studies, vol. 21, no. 2, pp. 239–246, September 2017.
