Use of action thresholds on cotton in northern Togo
Studies were conducted on smallholder plots in northern Togo from 1988 to 1991 to determine the possibility of applying treatments according to action thresholds. Thresholds were defined for the following pests: H. armigera, D. watersi, Earias sp., S. derogata and A. gossypii. The threshold programme was compared to the routine insecticide application programme involving five applications fortnightly beginning 50 d.a.s. An u.l.v. formulation of a mixture of deltamethrine and dimethoate at 3 litres/ha was applied, in both programmes. The results obtained showed that seed cotton yields were significantly different in 1991 (164 kg/ha less in the threshold treatment programme). Calculation shows that a reduction in treatments from five to three is not economical for the producer under the cropping conditions of the experiment. However, it could be worthwhile for the cotton-growing development company, if solutions are found to the numerous practical problems brought to light by the experiments conducted over the past 4 years.
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Language: | eng |
Subjects: | H10 - Ravageurs des plantes, Gossypium, Helicoverpa armigera, Aphis gossypii, insecticide, lutte anti-insecte, lutte chimique, http://aims.fao.org/aos/agrovoc/c_3335, http://aims.fao.org/aos/agrovoc/c_30255, http://aims.fao.org/aos/agrovoc/c_30762, http://aims.fao.org/aos/agrovoc/c_3887, http://aims.fao.org/aos/agrovoc/c_3885, http://aims.fao.org/aos/agrovoc/c_1514, http://aims.fao.org/aos/agrovoc/c_7801, |
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dig-cirad-fr-3941942024-01-28T00:15:20Z http://agritrop.cirad.fr/394194/ http://agritrop.cirad.fr/394194/ Use of action thresholds on cotton in northern Togo. Silvie Pierre, Sognigbe B.. 1993. International Journal of Pest Management, 39 (1) : 51-56.https://doi.org/10.1080/09670879309371758 <https://doi.org/10.1080/09670879309371758> Use of action thresholds on cotton in northern Togo Silvie, Pierre Sognigbe, B. eng 1993 International Journal of Pest Management H10 - Ravageurs des plantes Gossypium Helicoverpa armigera Aphis gossypii insecticide lutte anti-insecte lutte chimique http://aims.fao.org/aos/agrovoc/c_3335 http://aims.fao.org/aos/agrovoc/c_30255 http://aims.fao.org/aos/agrovoc/c_30762 http://aims.fao.org/aos/agrovoc/c_3887 http://aims.fao.org/aos/agrovoc/c_3885 http://aims.fao.org/aos/agrovoc/c_1514 Togo http://aims.fao.org/aos/agrovoc/c_7801 Studies were conducted on smallholder plots in northern Togo from 1988 to 1991 to determine the possibility of applying treatments according to action thresholds. Thresholds were defined for the following pests: H. armigera, D. watersi, Earias sp., S. derogata and A. gossypii. The threshold programme was compared to the routine insecticide application programme involving five applications fortnightly beginning 50 d.a.s. An u.l.v. formulation of a mixture of deltamethrine and dimethoate at 3 litres/ha was applied, in both programmes. The results obtained showed that seed cotton yields were significantly different in 1991 (164 kg/ha less in the threshold treatment programme). Calculation shows that a reduction in treatments from five to three is not economical for the producer under the cropping conditions of the experiment. However, it could be worthwhile for the cotton-growing development company, if solutions are found to the numerous practical problems brought to light by the experiments conducted over the past 4 years. article info:eu-repo/semantics/article Journal Article info:eu-repo/semantics/closedAccess https://doi.org/10.1080/09670879309371758 10.1080/09670879309371758 http://catalogue-bibliotheques.cirad.fr/cgi-bin/koha/opac-detail.pl?biblionumber=14866 info:eu-repo/semantics/altIdentifier/doi/10.1080/09670879309371758 info:eu-repo/semantics/altIdentifier/purl/https://doi.org/10.1080/09670879309371758 |
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H10 - Ravageurs des plantes Gossypium Helicoverpa armigera Aphis gossypii insecticide lutte anti-insecte lutte chimique http://aims.fao.org/aos/agrovoc/c_3335 http://aims.fao.org/aos/agrovoc/c_30255 http://aims.fao.org/aos/agrovoc/c_30762 http://aims.fao.org/aos/agrovoc/c_3887 http://aims.fao.org/aos/agrovoc/c_3885 http://aims.fao.org/aos/agrovoc/c_1514 http://aims.fao.org/aos/agrovoc/c_7801 H10 - Ravageurs des plantes Gossypium Helicoverpa armigera Aphis gossypii insecticide lutte anti-insecte lutte chimique http://aims.fao.org/aos/agrovoc/c_3335 http://aims.fao.org/aos/agrovoc/c_30255 http://aims.fao.org/aos/agrovoc/c_30762 http://aims.fao.org/aos/agrovoc/c_3887 http://aims.fao.org/aos/agrovoc/c_3885 http://aims.fao.org/aos/agrovoc/c_1514 http://aims.fao.org/aos/agrovoc/c_7801 |
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H10 - Ravageurs des plantes Gossypium Helicoverpa armigera Aphis gossypii insecticide lutte anti-insecte lutte chimique http://aims.fao.org/aos/agrovoc/c_3335 http://aims.fao.org/aos/agrovoc/c_30255 http://aims.fao.org/aos/agrovoc/c_30762 http://aims.fao.org/aos/agrovoc/c_3887 http://aims.fao.org/aos/agrovoc/c_3885 http://aims.fao.org/aos/agrovoc/c_1514 http://aims.fao.org/aos/agrovoc/c_7801 H10 - Ravageurs des plantes Gossypium Helicoverpa armigera Aphis gossypii insecticide lutte anti-insecte lutte chimique http://aims.fao.org/aos/agrovoc/c_3335 http://aims.fao.org/aos/agrovoc/c_30255 http://aims.fao.org/aos/agrovoc/c_30762 http://aims.fao.org/aos/agrovoc/c_3887 http://aims.fao.org/aos/agrovoc/c_3885 http://aims.fao.org/aos/agrovoc/c_1514 http://aims.fao.org/aos/agrovoc/c_7801 Silvie, Pierre Sognigbe, B. Use of action thresholds on cotton in northern Togo |
description |
Studies were conducted on smallholder plots in northern Togo from 1988 to 1991 to determine the possibility of applying treatments according to action thresholds. Thresholds were defined for the following pests: H. armigera, D. watersi, Earias sp., S. derogata and A. gossypii. The threshold programme was compared to the routine insecticide application programme involving five applications fortnightly beginning 50 d.a.s. An u.l.v. formulation of a mixture of deltamethrine and dimethoate at 3 litres/ha was applied, in both programmes. The results obtained showed that seed cotton yields were significantly different in 1991 (164 kg/ha less in the threshold treatment programme). Calculation shows that a reduction in treatments from five to three is not economical for the producer under the cropping conditions of the experiment. However, it could be worthwhile for the cotton-growing development company, if solutions are found to the numerous practical problems brought to light by the experiments conducted over the past 4 years. |
format |
article |
topic_facet |
H10 - Ravageurs des plantes Gossypium Helicoverpa armigera Aphis gossypii insecticide lutte anti-insecte lutte chimique http://aims.fao.org/aos/agrovoc/c_3335 http://aims.fao.org/aos/agrovoc/c_30255 http://aims.fao.org/aos/agrovoc/c_30762 http://aims.fao.org/aos/agrovoc/c_3887 http://aims.fao.org/aos/agrovoc/c_3885 http://aims.fao.org/aos/agrovoc/c_1514 http://aims.fao.org/aos/agrovoc/c_7801 |
author |
Silvie, Pierre Sognigbe, B. |
author_facet |
Silvie, Pierre Sognigbe, B. |
author_sort |
Silvie, Pierre |
title |
Use of action thresholds on cotton in northern Togo |
title_short |
Use of action thresholds on cotton in northern Togo |
title_full |
Use of action thresholds on cotton in northern Togo |
title_fullStr |
Use of action thresholds on cotton in northern Togo |
title_full_unstemmed |
Use of action thresholds on cotton in northern Togo |
title_sort |
use of action thresholds on cotton in northern togo |
url |
http://agritrop.cirad.fr/394194/ |
work_keys_str_mv |
AT silviepierre useofactionthresholdsoncottoninnortherntogo AT sognigbeb useofactionthresholdsoncottoninnortherntogo |
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1792491670164471808 |