scholarly journals Effect of Native Soap on Insect Pests and Grain Yield of Cowpea (Vigna unguiculata (L) Walp) in Asaba and Abraka during the Late Cropping Season in Delta State, Nigeria

2012 ◽  
Vol 1 (2) ◽  
pp. 275 ◽  
Author(s):  
E. O. Egho ◽  
E. C. Enujeke
Keyword(s):  
Grain Yield ◽  
Insect Pests ◽  
Block Design ◽  
Maruca Vitrata ◽  
Flower Bud ◽  
Megalurothrips Sjostedti ◽  
Ecological Zones ◽  
Cropping Season ◽  
Pod Borer ◽  
Legume Pod Borer

<p>Studies were conducted to test the effectiveness of native soap against cowpea insect pests during the late cowpea cropping season in two agro-ecological zones-Asaba and Abraka, Delta State. Four major insect pests, namely the cowpea aphid, <em>Aphis craccivora</em> Koch, the legume flower bud thrips, <em>Megalurothrips sjostedti </em>Tryb, the legume pod borer, <em>Maruca vitrata </em>Fab and pod sucking bugs were studied. The experiment was made up of five treatments-1, 2 and 3 percent concentrations of native soap, cypermethrin (as conventional chemical and check) and a control. Each treatment was replicated three times. The experiment was arranged into a randomised complete block design (RCBD). The results showed that all the major insect pests occurred in the study areas but were more at Asaba compared to Abraka. Native soap was effective against <em>A. craccivora </em>and flower bud thrips population at Asaba. <em>Maruca vitrata </em>was not affected by soap application. Grain yield was high at Abraka and significantly (P&lt;0.05) higher than Asaba. The use of native soap as non-conventional insecticide in cowpea insect pests management appears promising, more so as it is not expensive and safe to handle. Farmers may prefer it to synthetic chemical pesticides with their associated dangers.</p>

scholarly journals Effect of Planting Dates on Incidence of Legume Pod Borer (Maruca vitrata Geyer) on Cowpea (Vigna unguiculata (L.) Walp.) Varieties in Samaru Kataf, Kaduna State

2020 ◽  
Vol 36 (1) ◽  
pp. 81-97
Author(s):  
N Musa
Keyword(s):  
Grain Yield ◽  
Vigna Unguiculata ◽  
Block Design ◽  
Maruca Vitrata ◽  
Planting Dates ◽  
Local Variety ◽  
Cropping Season ◽  
Pod Borer ◽  
Legume Pod Borer ◽  
Randomized Complete Block Design

Field experiment was carried out during 2018 cropping season to evaluate the effect of planting dates on incidence of legume pod borer Maruca vitrata on cowpea (Vigna unguiculata) varieties. The treatments consist of five varieties of cowpea (local variety, SAMPEA 6, SAMPEA 7, SAMPEA 8 and SAMPEA 10) which were sown at three different dates, 7th (early), 24th (Mid) August and 7th (early) September, 2018. The experiment was laid out in a Randomized Complete Block Design (RCBD) replicated three times. The number of M. vitrata larva on flowers, damaged pods and weight of grains were determined. The result showed that first sowing nearly August had less infestation by M. vitrata than those in mid August and differs significantly (P≤0.05) from those sown in September. All varieties sown in early and mid August had less M. vitrata infestation and produced higher grain yield of 533.33kg and 395.06 kg on SAMPEA 7 and SAMPEA 8, respectively compared to those sown in early September: 256.79 and 197.53 on SAMPEA 7 and SAMPEA 10, respectively. Local variety and SAMPEA 6 were the varieties with higher mean number of M. vitrata, higher pod damage and low grain yield. Therefore, SAMPEA 7 can be utilized in breeding program for the management of pod borer.

scholarly journals Bioefficacy and Economics of Certain Novel Generation Insecticides against Spotted Pod Borer, Maruca vitrata (Geyer) in Greengram (Vigna radiata L.)

2021 ◽  
Author(s):  
Elluru Sireesha ◽  
Gaje Singh ◽  
Rajendra Singh ◽  
Bhupendra Singh
Keyword(s):  
Grain Yield ◽  
Block Design ◽  
Cost Benefit ◽  
Maruca Vitrata ◽  
Emamectin Benzoate ◽  
Randomized Block Design ◽  
Pod Borer ◽  
Cost Benefit Ratio ◽  
And Control ◽  
Crop Research

Background: Spotted pod borer, Maruca vitrata, cause greater damage by attacking flowers, pods in greengram plants. This study investigates the efficacy and economics of certain novel insecticides when sprayed against spotted pod borer in green gram. Methods: The experiment was conducted at Crop Research Center, Sardar Vallabhbhai Patel University of Agriculture and Technology, Meerut, during kharif 2019 in randomized block design with eight treatments (Emamectin benzoate, Spinosad, Chlorantroniliprole, Indoxacarb, Novaluron, Profenophos, Triazophos and control) and three replications on variety SML668. Observations were taken at three, seven and eleven days after the first and second spray and the data thus recorded were analyzed. Result: The insecticide Chlorantraniliprole 20SC @ 0.025 ml/ lit has shown the highest efficacy with low per cent pod damage (7.33) and maximum grain yield (8.61q/ ha) against M. vitrata from the first day of application followed by Spinosad 45SC @ 0.25 ml/ lit with pod damage of 10.67 per cent and grain yield of 5.08 q/ ha. The highest cost-benefit ratio was obtained in Emamectin benzoate treatment (1:8.54), followed by chlorantraniliprole (1: 6.76).

scholarly journals Screening of yard long bean genotypes for resistance to legume pod borer, Maruca vitrata F.

2018 ◽  
Vol 16 (3) ◽  
pp. 424-428 ◽  
Author(s):  
Robiah Noor Ahmed ◽  
Md. Azizul Haque ◽  
Kazi Shahanara Ahmed ◽  
Mohammad Mahir Uddin ◽  
Mohammed Abul Monjur Khan
Keyword(s):  
Chemical Analysis ◽  
Block Design ◽  
Research Work ◽  
Maruca Vitrata ◽  
Central Laboratory ◽  
Pod Borer ◽  
Legume Pod Borer ◽  
Randomized Complete Block Design ◽  
Moderately Resistant ◽  
Different Levels

The research work on the evaluation of yard long bean genotypes for resistance to legume pod borer, Maruca vitrata F. was carried out in two consecutive seasons viz., kharif 2015 and rabi 2015-16 in randomized complete block design (RCBD) in the field of the Department of Entomology, Bangladesh Agricultural University (BAU), Mymensingh and chemical analysis of sugar, protein and phenol of yard long bean were carried out at Bangladesh Institute of Nuclear Agriculture (BINA), Professor Mohammad Hossain Central Laboratory and laboratory of the Department of Biochemistry and Molecularbiology, Bangladesh Agricultural University (BAU), Mymensingh. Nine genotypes of yard long bean were evaluated and reacted distinctly to M. vitrata with significantly different levels of infestation to flowers, pods and yield. The genotype Long Red Mollika was categorized as moderately resistant to legume pod borer in both kharif and rabi seasons. Genotype YL 305 was found susceptible in both the seasons. The plant attributes, both vegetative and reproductive, of yard long bean did not show any significant correlation in favour of resistance to M. vitrata. Yard long bean genotypes also did not show resistant reaction to M. vitrata in respect of sugar and phenol but particularly protein showed antibiosis against M. vitrata. J. Bangladesh Agril. Univ. 16(3): 424–428, December 2018

scholarly journals The spatial genetic differentiation of the legume pod borer, Maruca vitrata F. (Lepidoptera: Crambidae) populations in West Africa

2012 ◽  
Vol 102 (5) ◽  
pp. 589-599 ◽  
Author(s):  
T.A. Agunbiade ◽  
B.S. Coates ◽  
K.S. Kim ◽  
D. Forgacs ◽  
V.M. Margam ◽  
...  
Keyword(s):  
West Africa ◽  
Burkina Faso ◽  
Insect Pests ◽  
Insect Pest ◽  
Geographic Distance ◽  
Movement Pattern ◽  
Maruca Vitrata ◽  
Global Estimate ◽  
Pod Borer ◽  
Legume Pod Borer

AbstractThe legume pod borer, Maruca vitrata, is an endemic insect pest that causes significant yield loss to the cowpea crop in West Africa. The application of population genetic tools is important in the management of insect pests but such data on M. vitrata is lacking. We applied a set of six microsatellite markers to assess the population structure of M. vitrata collected at five sites from Burkina Faso, Niger and Nigeria. Observed polymorphisms ranged from one (marker 3393) to eight (marker 32008) alleles per locus. Observed and expected heterozygosities ranged from 0.0 to 0.8 and 0.0 to 0.6, respectively. Three of the loci in samples from Nigeria and Burkina Faso deviated significantly from Hardy-Weinberg Equilibrium (HWE), whereas no loci deviated significantly in samples from Niger. Analysis of molecular variance (AMOVA) indicated that 67.3% level of the genetic variation was within individuals compared to 17.3% among populations. A global estimate of FST=0.1 (ENA corrected FST=0.1) was significant (P⩽0.05) and corroborated by pairwise FST values that were significant among all possible comparisons. A significant correlation was predicted between genetic divergence and geographic distance between subpopulations (R2=0.6, P=0.04), and cluster analysis by the program STRUCTURE predicted that co-ancestry of genotypes were indicative of three distinct populations. The spatial genetic variance among M. vitrata in West Africa may be due to limited gene flow, south-north seasonal movement pattern or other reproductive barriers. This information is important for the cultural, chemical and biological control strategies for managing M. vitrata.

Infectivity of entomopathogenic nematodes against the legume pod-borer, Maruca vitrata Fabricius, infesting pigeon pea

2021 ◽  
Vol 95 ◽  
Author(s):  
R. Pervez ◽  
U. Rao
Keyword(s):  
Entomopathogenic Nematodes ◽  
Agricultural Research ◽  
Insect Pest ◽  
Indian Agricultural Research Institute ◽  
Pigeon Pea ◽  
Fourth Instar ◽  
Maruca Vitrata ◽  
Pod Borer ◽  
Legume Pod Borer ◽  
Maximum Penetration

Abstract The legume pod-borer, Maruca vitrata Fabricius (Lepidoptera: Crambidae) (LPB), is an important insect pest of pigeon pea. Chemical pesticides are generally employed to manage this pest, but because of the soil residue issues and other environmental hazards associated with their use, biopesticides are also in demand. Another benign alternative is to use entomopathogenic nematodes (EPNs) to manage this vital pest. In the present study, the infectivity of ten native EPNs was evaluated against LPB by assessing their penetration and production in the LPB. The effectiveness of the promising EPNs against second-, third- and fourth-instar LPB larvae was also studied. Heterorhabditis sp. (Indian Agricultural Research Institute-Entomopathogenic Nematodes Rashid Pervez (IARI-EPN RP) 06) and Oscheius sp. (IARI-EPN RP 08) were found to be most pathogenic to LPB, resulting in about 100% mortality within 72 h, followed by Steinernema sp. (IARI-EPN RP 03 and 09). Oscheius sp. (IARI-EPN RP 04) was found to be the least pathogenic to LPB larva with 67% mortality. Maximum penetration was exhibited by Heterorhabditis sp. (IARI-EPN RP 06) followed by Oscheius sp. (IARI-EPN RP 08), whereas the lowest rate of penetration was exhibited by Oscheius sp. (IARI-EPN RP 01). The highest rate of production was observed with Oscheius sp. (IARI-EPN RP 08), followed by Oscheius sp. (IARI-EPN RP 04 and 10). Among the tested instars of the LPB larvae, second-instar larvae were more susceptible to EPNs, followed by third- and fourth-instar larvae. The results indicate that Heterorhabditis sp. (IARI-EPN RP 06) and Oscheius sp. (IARI-EPN RP 08) have a good potential to the manage LPB.

Transgenic cowpea plants expressing Bacillus thuringiensis Cry2Aa insecticidal protein imparts resistance to Maruca vitrata legume pod borer

2021 ◽  
Vol 40 (3) ◽  
pp. 583-594
Author(s):  
Anil Kumar ◽  
Ranjana Jaiwal ◽  
Rohini Sreevathsa ◽  
Darshna Chaudhary ◽  
Pawan K. Jaiwal
Keyword(s):  
Bacillus Thuringiensis ◽  
Maruca Vitrata ◽  
Insecticidal Protein ◽  
Pod Borer ◽  
Legume Pod Borer ◽  
Transgenic Cowpea

The emergence and mating rhythms of the legume pod borer, Maruca vitrata (Fabricius, 1787) (Lepidoptera: Pyralidae)

2007 ◽  
Vol 83 (3) ◽  
pp. 226-234 ◽  
Author(s):  
Peng-Fei Lu ◽  
Hai-Li Qiao ◽  
Xiao-Ping Wang ◽  
Xi-Qiao Wang ◽  
Chao-Liang Lei
Keyword(s):  
Maruca Vitrata ◽  
Pod Borer ◽  
Legume Pod Borer ◽  
Lepidoptera Pyralidae
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