Pest management in cowpea. Part 2. Integrating planting time, plant density and insecticide application for management of cowpea field insect pests in eastern Uganda

Karungi, J.; Adipala, E.; Kyamanywa, Samuel; Ogenga-Latigo, M.W.; Oyobo, N.; Jackai, L. E. N.

doi:10.1016/s0261-2194(00)00014-4

Cited by 57 publications

(32 citation statements)

References 11 publications

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“…Results from this study therefore, clearly indicate that insect pest infestations at flowering and podding stages are a significant limiting factor to increased and sustainable cowpea grain production in the Transkei. This corroborates the findings of Asiwe (2009c), Karungi et al (2000), Kyamanywa (1996) and Amatobi (1995), who have shown that pod borers and pod-sucking bugs are important insect pests of cowpea. Pod borers are important pest of the reproductive structures of cowpea with early feeding leading to flower bud and flower abortions, hence poor pod set (Tamo et al, 1997).…”

Section: Discussionsupporting

confidence: 91%

Effects of insecticide spray application on insect pest infestation and yield of cowpea (Vigna unguiculata (L.) Walp.) in the Transkei, South Africa

Dzemo¹,

Niba²,

Asiwe³

2010

Afr. J. Biotechnol.

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Field studies were conducted during the 2008 -2009 cropping season to determine the minimal insecticide application which can reduce cowpea yield losses on the field due to insect pest infestations in the Transkei region of South Africa. Treatments consisted of five cowpea varieties and four regimes of insecticide spray which were laid out with a split-plot experimental design with four replications. Observations were taken on the incidence of major insect pests, cowpea pod and seed damage by insects as well as growth and yield parameters of the cowpea varieties. Results showed that spray regimes had significant effects on insect population counts, pod and seed damage and consequently on cowpea yield parameters. Application of insecticide once each at flower budding and early podding significantly reduced pod borers and pod-sucking bugs infestations by 44 and 56%, respectively, compared to the untreated control. Application of insecticide, once at flower budding, early podding and pod filling significantly reduced pod and seed damage, resulting in substantial increase in number of pods, pod weight and seed weight per plant, and also number of seeds per pod of cowpea compared to the untreated control. This study provides information on the incidence of major insect pests of cowpea as well as the minimum insecticide control intervention necessary for effectively reducing cowpea yield losses on the field. Two insecticide spray regimes (once at flowering and podding) significantly reduced insect population and damage of cowpea.

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Section: Discussionsupporting

confidence: 91%

Effects of insecticide spray application on insect pest infestation and yield of cowpea (Vigna unguiculata (L.) Walp.) in the Transkei, South Africa

Dzemo¹,

Niba²,

Asiwe³

2010

Afr. J. Biotechnol.

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“…Findings by Karungi et al (2000) indicated that pesticide usage could be reduced from the 8-10 sprays a season to only 3 well timed ones, with higher returns (Tables 6, 7). Targeting pests that attack the crop at the budding, flowering and podding stages (corresponding to a spray at 30, 45 and 55 days after planting) contributed most in increasing marginal returns (Tables 6, 7).…”

Section: Innovative Spray Schedules and Alternative Pest Management Omentioning

confidence: 99%

“…Cowpea growers range from those who market all they produce (commercial) to those who consume all that the grow (subsistence). Many assert that it is not feasible to grow the crop commercially without the use of insecticide sprays (Jackai et al, 1985;Karungi et al, 2000). Hot pepper (Capsicum chinense) is an important fresh export crop.…”

Section: Introductionmentioning

confidence: 99%

Pesticide Utilisation, Regulation and Future Prospects in Small Scale Horticultural Crop Production Systems in a Developing Country

Karungi¹,

Kyamanywa²,

Adipala³

et al. 2011

Pesticides in the Modern World - Pesticides Use and Management

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“…Aziz and Abdul (1986) found that the total yield of some cultivars (sown on 1, 16 and 31 March) declined with later sowing. Also, Schans et al, (1991)and Karungi et al,(2000) detected that yield of peas was strongly affected by temperature.…”

Section: Total Yieldmentioning

confidence: 97%

Yield Pattern of Sugar Peas Cultivars as Influenced By Planting Dates to Meet The Export Requirements

2013

Alexandria Science Exchange Journal: An International Quarterly

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The planting dates of the first and mid October were the best in this regard. Exportable yield was significantly the highest when sown on 1 and 15 October, in both seasons.The first and 15of October and the first of November planting dates did not show any significant differences in the percentage of exportable yield, while, significant differences were found when these dates were compared to earlier or later dates of planting in both seasons, where substantial reduction in exportable yield noticed was occurred. Planting on the first of September resulted in the earliest opened flowering in both seasons.Sugar Daddy had the tallest plants followed by Toledo, Giant sugar, sugar Lace and Mange Tout.Where the first cultivar gave the earliest flowering, followed by Sugar lace, Cascadian, Sugar Daddy and Mange Tout, in both season, and significant differences between cultivars were found .Mange Tout gave the highest yield in the two seasons, while Sugar Daddy showed the lowest total yield in both seasons.The highest amount of exportable yield was obtained from.Mange tout; Sugar Daddy had the lowest yield in both years.Significant differences were found among cultivars in both seasons on the percentage of exportable yield.

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Pest management in cowpea. Part 2. Integrating planting time, plant density and insecticide application for management of cowpea field insect pests in eastern Uganda

Cited by 57 publications

References 11 publications

Effects of insecticide spray application on insect pest infestation and yield of cowpea (Vigna unguiculata (L.) Walp.) in the Transkei, South Africa

Effects of insecticide spray application on insect pest infestation and yield of cowpea (Vigna unguiculata (L.) Walp.) in the Transkei, South Africa

Pesticide Utilisation, Regulation and Future Prospects in Small Scale Horticultural Crop Production Systems in a Developing Country

Yield Pattern of Sugar Peas Cultivars as Influenced By Planting Dates to Meet The Export Requirements

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