Timing of insecticidal application in vigna unguiculata (l.) Walp, cv. It84s-2246-4 and its potential as late season crop in the calaber area

Emosairue, S. O.; Eze, D. I.; Okore, I. K.

doi:10.4314/jacar.v1i1.41091

Cited by 8 publications

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“…The insecticidal effect of the vegetable oils agree with the work of Ajayi and Adedire (2003) who reported that sand-box seed oil has contact toxic effect on adult C. maculatus with 40% bruchid mortality at the lowest oil treatment at 0.1% at 1 day after treatment and 100% mortality at 1.5% and 2% oil treatment at 1-day post treatment period. This mode of action could be as a result of the oil coating of the treated cowpea grains which hinder contact between the grains and weevils leading to suffocation (Emosairue et al, 2004). This is similar to the work of Ramzan (1994) who reported that groundnut oil, soybean oil cotton seed, sunflower and mustard oils when mixed with cowpea, completely suppressed adult emergence of C. maculatus.…”

Section: Discussionsupporting

confidence: 80%

Efficacy of Olive oil, Groundnut oil, Soybean oil and Palm kernel oil in the Control of Callosobruchus maculatus (F.) in Stored Cowpea (Vigna unguiculata L. Walp)

Uddin¹,

Sanusi²

2013

Agrosearch

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Laboratory experiments were conducted to investigate the potentials of four different vegetable oils (olive oil, groundnut oil, soybean oil and palm kernel oil) for the protection of stored cowpea against Callosobruchus maculatus. Ife-brown seeds (a susceptible variety) used for the experiment were subjected to the different oil treatments applied at 0.2 ml per 50 g of seeds. The experiment was laid out in a completely randomised design with three replicates per treatment. All the oils tested suppressed the development of C. maculatus to some extent with groundnut oil and palm kernel oil exhibiting similar results in the control of the pest. There was no significant difference between palm kernel oil and groundnut oil for adult mortality, larvae and pupae emergence at P< 0.05 but it was significantly different for the F1 progeny emergence. Palm kernel oil was more effective against the F1 progeny emergence. These two oils could be used in the storage of cowpea against C. maculatus.

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Section: Discussionsupporting

confidence: 80%

Efficacy of Olive oil, Groundnut oil, Soybean oil and Palm kernel oil in the Control of Callosobruchus maculatus (F.) in Stored Cowpea (Vigna unguiculata L. Walp)

Uddin¹,

Sanusi²

2013

Agrosearch

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“…The study showed that high grain yield under the application of CPM in both seasons is possible at Asaba. Cypermethrin application for cowpea production has been reported in the late season from Calabar by Emosairue et al (1994). From the data, cowpea yield was high and nearly similar in both seasons.…”

Section: Discussionmentioning

confidence: 85%

Management of major field insect pests and yield of cowpea (Vigna unguiculata (L) walp) under calendar and monitored application of synthetic chemicals in Asaba, southern Nigeria

Egho¹

2011

AJSIR

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The management of major field insect pests of cowpea under calendar and monitored sprays of cypermethrin was studied. The major insect pests studied were the cowpea aphid, Aphis craccivora Koch, legume bud thrips Megalurothrips sjostedti Tryb, legume pod borer, Maruca vitrata Fab. and pod sucking bugs. Influence of insect pest management on yield was also determined. The calendar sprays consisted of 7 days' spray intervals carried out 5 times and 10 days' spray intervals, carried out 4 times. Monitored spray was carried out only when insect pest infestation/damage reached or exceeded the action threshold. The experiments were conducted in the Teaching and Research Farms of the Agronomy department, Asaba Campus, Delta State University, Nigeria. Comparison of insect pests and grain yield from the calendar and monitored spray treatments was made if differences existed among them. Results indicated that all the cypermethrin treatments effectively controlled M. sjostedti, M. vitrata, flower bud thrip population and pod sucking bugs when compared to control in the early season. There was however, no significant difference (P>0.05) in calendar and monitored sprays. Similar observation was made for grain yield. In the late season, all treatments significantly (P<0.05) controlled pest population/damage on cowpea. Grain yield increase was similarly recorded but no differences among the treatments. Cowpea growers sometimes apply insecticides as many as 8 to 10 times to control insect pests during the growing season; the study here provides evidence (1) that 10 days' interval spray and monitored spray can be as profitable as 7 days' interval spray in cowpea production and (2) this could reduce the number of chemical application, save cost as well as environmental pollution and hazards to consumers.

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“…Yields can be high if production constraints are adequately addressed. Production constraints which include attacks and damages to the crops by insect pests [6] largely contribute to low yield and good grains cannot be obtained in farms without any form of control on insect pests [7]. The major/key insect pests include the foliage beetle, cowpea aphid (Aphis craccivora), the legume pod borer, Maruca vitrata (Fab) and a complex of pod sucking insects which include Clavigralla tomentosicollis, Anoplocnemis curvipes, etc.…”

Section: Introductionmentioning

confidence: 99%

Phytotoxicity of Cypermethrin Pesticide on Seed Germination, Growth and Yield Parameters of Cowpea (Vigna unguiculata)

Obidola

Ibrahim

Yaroson

et al. 2019

AJAHR

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The experiment was carried out at Federal College of Forestry Jos, in Jos North Local Government Area of Plateau State to determine the phytotoxicity of cypermethrin pesticide on seed germination, growth and yield parameters of cowpea. Cypermethrin is popularly used by farmers as a means of treating seeds before planting to prevent insect, pest and birds attack. Randomized Complete Block Design (RCBD) involving 5 treatments T0 as control (No cypermethrin used), T1 with 0.25% cypermethrin (0.25ml of cypermethrin in 99.75ml of water), T2 with 0.50% cypermethrin (0.50ml of cypermethrin in 99.50ml of water), T3 with 0.75% cypermethrin (0.75ml of cypermethrin in 99.25ml of water) and T4 contained 1.00% cypermethrin (1.0ml of cypermethrin in 99.00ml water). Data was collected on radicle length, plumule length, number of leaves, number of branches, stem girth, number of seeds/pod, 100 seed weight, pod length and dry matter. Data collected was subjected to analysis of variance (ANOVA) at 5% level of significance using SPSS 23 and where significance was declared, Duncan Multiple Range Test (DMRT) was used to separate the means. The result of the research indicates that significance difference occurs in the radicle length (P<0.05) in which T1 has the highest mean value. The stem girth shows a significance difference with T0 having the highest mean value (7.32) at P<0.05. The result for the number of branches and the number of leaves shows significance difference with T0 having the highest mean values 39.15 and 101.65 respectively at P<0.05 level of significance. The yield parameters shows a significance difference for number of seeds/pod, 100 seed weight, pod length, as well as the total dry matter. The highest mean values for the yield parameters are observed in T0 with mean values 18.52, 18.53, 16.35 and 68.35 for number of seeds/pod, 100 seed weight, pod length and total dry mass respectively. Alpha amylase enzyme activity was observed to be higher at lower concentration of the cypermethrin (T1) on day 2 (2.75) but the increase in the enzyme activity tilted towards the highest concentration (T4) on day 3 and day 4 with mean value 2.70 and 3.10 at 5% level of significance.

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Timing of insecticidal application in vigna unguiculata (l.) Walp, cv. It84s-2246-4 and its potential as late season crop in the calaber area

Cited by 8 publications

References 0 publications

Efficacy of Olive oil, Groundnut oil, Soybean oil and Palm kernel oil in the Control of <i>Callosobruchus maculatus</i> (F.) in Stored Cowpea (<i>Vigna unguiculata</i> L. Walp)

Efficacy of Olive oil, Groundnut oil, Soybean oil and Palm kernel oil in the Control of <i>Callosobruchus maculatus</i> (F.) in Stored Cowpea (<i>Vigna unguiculata</i> L. Walp)

Management of major field insect pests and yield of cowpea (Vigna unguiculata (L) walp) under calendar and monitored application of synthetic chemicals in Asaba, southern Nigeria

Phytotoxicity of Cypermethrin Pesticide on Seed Germination, Growth and Yield Parameters of Cowpea (Vigna unguiculata)

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