scholarly journals Preferences and demographic parameters of cowpea aphid on advanced lines of semiprostrate cowpea

2019 ◽  
Vol 54 ◽  
Author(s):  
Leandro Carvalho da Silva ◽  
Daniel Rodrigues Nere ◽  
Ervino Bleicher ◽  
Eraldo José Madureira Tavares ◽  
Antônio Vinícius Correa Barbosa
Keyword(s):  
Vigna Unguiculata ◽  
Birth Rate ◽  
Block Design ◽  
Demographic Parameters ◽  
Demographic Parameter ◽  
Randomized Complete Block Design ◽  
Cowpea Aphid ◽  
Finite Growth ◽  
Insect Attack ◽  
Preference Tests

Abstract: The objective of this work was to determine the preference and the demographic parameters of cowpea aphid (Aphis craccivora) in advanced lines of semiprostrate cowpea (Vigna unguiculata), and to verify both the existance and type of plant resistance to this insect attack. Aphid preference to 20 cowpea genotypes was tested in a randomized complete block design, with six replicates. Lines showing the highest levels of resistance and susceptibility in the preference tests were selected for use in the demographic parameter tests. Based on aphid birth rate and mortality, fertility life tables were constructed. The MNCO4-792F-123 line was classified as resistant. The lowest values for cowpea aphid intrinsic and finite growth rates were obtained for the MNCO4-792F-123, and the highest ones for MNCO4-782F-108 and 'BRS Novaera' genotypes, whose levels exceeded those of 'Vita 7', the standard genotype for susceptibility. The MNCO4-792F-123 line is the least favorable for the development of cowpea aphid, while MNCO4-782F-108 and 'BRS Novaera' are the most susceptible ones.

scholarly journals Evaluation of Yard Long Bean (Vigna unguiculata ssp. sesquipedalis) Genotypes for Commercial Production in the Central Mid hills Region of Nepal

2020 ◽  
Vol 14 (1) ◽  
pp. 43-47
Author(s):  
Suprabha Pandey ◽  
Surendra Lal Shrestha ◽  
Ishwori Prasad Gautam ◽  
Mira Dhakal ◽  
Sangita Sapkota
Keyword(s):  
Vigna Unguiculata ◽  
Block Design ◽  
Commercial Production ◽  
Early Maturity ◽  
Green Color ◽  
Plant Vigor ◽  
Pod Yield ◽  
Research Division ◽  
Randomized Complete Block Design ◽  
Great Wall

The experiment on evaluation of open pollinated genotypes of Yard long bean (Vigna unguiculata ssp. sesquipedalis) was conducted during summer season of 2016 and 2017 at Horticulture Research Division, Khumaltar Lalitpur to assess the variability in the genotypes and yield potentiality for commercial production. The experiment was laid out in Randomized Complete Block Design with three replications. Six genotypes viz. Great Wall 01, Great Wall 02, Great Wall 03, Great Wall 04 and Great Wall 08 were compared with Khumal Tane. Observations were recorded on fresh pod yield and yield attributing parameters. The plant vigor and plant uniformity score (1-5 scale) was not found significantly different among the tested genotypes. The highest number of pods per plant (46) was observed on the variety Great Wall 03 and the lowest number of pods (33) on Great Wall 01 followed by Khumal Tane (39). The fresh pod yield was noted the highest with Great wall 03 (24 t/ha) followed by Great Wall 2 (19.4 t/ha). The lowest yield was observed with Khumal Tane (12.7 t/ha). Likewise, Great Wall 03 was found tender whitish with green color when it matures and spongy type of fruit with mid early maturity (85-95 days) along with long harvesting period of 30-35 days. Although Great Wall 02 scored 4.7 in plant uniformity (1-5 scale) and 4.4 in plant vigor (1-5 scale) it was characterized as thick fleshy and whitish green color at maturity with smooth straight type flesh having early maturity (70-80 days) which could gain the demand of the market early compared to most popular Khumal Tane. Thus, among all genotypes Great Wall 03 and Great Wall 02 were recorded best for further evaluation and recommendation.

scholarly journals Agro-economic efficiency of immature cowpea-radish intercropping systems in semiarid environment

2021 ◽  
Vol 56 ◽  
Author(s):  
Iara Beatriz Silva Azevedo ◽  
Francisco Bezerra Neto ◽  
Jailma Suerda Silva de Lima ◽  
Aridênia Peixoto Chaves ◽  
Josimar Nogueora da Silva ◽  
...  
Keyword(s):  
Vigna Unguiculata ◽  
Economic Efficiency ◽  
Raphanus Sativus ◽  
Block Design ◽  
Productivity Index ◽  
System Productivity ◽  
Semiarid Environment ◽  
Randomized Complete Block Design ◽  
Cropping Seasons ◽  
Economic Indices

Abstract: The objective of this work was to evaluate the agro-economic efficiency of immature cowpea-radish intercropping systems in a semiarid environment in Brazil. The experiments were carried out in two cropping seasons, in a randomized complete block design with four replicates. The treatments consisted of a 4x2 factorial arrangement for the combination of four cowpea (Vigna unguiculata) cultivars (BRS Tumucumaque, BRS Cauamé, BRS Guariba, and BRS Itaim) and two radish (Raphanus sativus) cultivars (Crimson Gigante and Zapp). The agro-economic indices - system productivity index (SPI), land equivalent coefficient (LEC), and monetary equivalent ratio (MER) - were obtained using single plots of each cultivar in each block. 'BRS Tumucumaque' and 'BRS Guariba' showed the highest productivity of immature cowpea pods, and 'Crimson Gigante' showed the highest yield of marketable radish roots. The cultivation of either 'BRS Tumucumaque' or 'BRS Guariba' cowpea with 'Crimson Gigante' radish provides a greater agro-economy efficiency and sustainability for immature cowpea-radish intercropping.

scholarly journals Genetic variability and yield components of yard long bean (Vigna unguiculata var. sesquipedalis L.)

2021 ◽  
Vol 82 (3) ◽  
pp. 107-122
Author(s):  
Zakia Sultana ◽  
Nahid Ahmed ◽  
Mohammad Saiful Islam ◽  
Abdur Rahim
Keyword(s):  
Genetic Variability ◽  
Vigna Unguiculata ◽  
Block Design ◽  
Pod Yield ◽  
Randomized Complete Block Design ◽  
Days To Maturity ◽  
Cluster Distance ◽  
High Heritability ◽  
Positive Effect ◽  
Pod Number

Yard long bean (Vigna unguiculata var. sesquipedalis L.) is one of the important leguminous vegetables in Bangladesh. However, yield of this vegetable is much lower in Bangladesh compared to other yard long beangrowing countries. Therefore, it is crucial to improve the yield of this vegetable. In the present study, genetic variability, heritability, character association and genetic diversity were evaluated on randomized complete block design with three replications among seven-yard-long bean genotypes. The genotypes were significantly variable for the studied characters. High genotypic and phenotypic coefficient of variation was observed in number of pods per plant and pod yield per plant. Accordingly, high heritability together with high genetic advance in percent of mean was observed in number of pod per plant, pod diameter and hundred seed weight. The correlation studies revealed that pod yield per plant showed significant positive correlation with number of seed per pod, number of pods per plant while significantly negative correlation with days to marketable harvest at both genotypic and phenotypic level. Path analysis revealed days to first flowering, days to maturity, number of pods per plant, pod weight and number of seeds per pod had direct positive effect on pod yield per plant. The studied genotypes were clustered into 3 groups with highest of inter-cluster distance between cluster I and III while lowest between cluster II and III. The genotypes of cluster I exhibited higher mean performance while lower in cluster III for important traits including pod yield per plant.

scholarly journals EFFICACY OF COMMERCIAL INSECTICIDE FOR THE MANAGEMENT OF COWPEA POD BORER (MARUCA VITRATA) ON COWPEA (VIGNA UNGUICULATA (L.) WALP) UNDER FIELD CONDITION IN CHITWAN, NEPAL

2021 ◽  
Vol 2 (2) ◽  
pp. 92-95
Author(s):  
Chudamani Pant ◽  
Rajendra Regmi ◽  
Sagar Bhusal ◽  
Shrawan Yadav ◽  
Sapana Tiwari ◽  
...  
Keyword(s):  
Vigna Unguiculata ◽  
Block Design ◽  
Control Plot ◽  
Chemical Insecticide ◽  
Pod Borer ◽  
Larval Count ◽  
Randomized Complete Block Design ◽  
Pea Pod ◽  
Fruit Damage ◽  
Benefit Cost

A field experiment was conducted to evaluate the efficacy of commercially available insecticides for management of cowpea pod borer to know about the effective and safe chemical insecticide to manage the cow pea pod borer. A total of five treatments; (i. Neemix (2ml/L), ii. Flubendamide 48% SC (2ml/L), iii. Spinosad 45% SC (3ml/L), iv. Chlorantraniliprole 18.5% SC(2ml/L) and v. control) were tested using Randomized Complete Block Design (RCBD) with four replications for each treatment. The results showed that the Chlorantraniliprole 18.5% SC was most effective to reduce cowpea pod borer larva followed by Flubendamide 48% SC and Spinosad 45% SC. The damage of pod by cowpea pod borer was recorded the highest control plot (20.53%) whereas lowest fruit damage was recorded Chlorantraniliprole (5.18%) followed by Flubendamide (5.44%). Among the treatments, the highest yield was obtained with Chlorantraniliprole (11.22mt/ha) followed by Flubendamide (9.21mt/ha) and Spinosad (8.27/ha). Whereas the lowest yield was obtained with control plot (6.59mt/ha) followed by Neemix (7.09mt/ha) treated plots. The benefit-cost (B:C) ratio for all the treatments revealed that chlorantraniliprole @ 0.2ml/L was highly economical with a B:C of 1:62.14 followed by spinosad with 1: 21.91. The chlorantraniliprole resulted the lowest larval count, lowest fruit damage, highest yield and highest marginal B: C thus could be the best insecticide to manage cowpea pod borer.

scholarly journals Effect of Foliar Application of Banana Pseudostem Sap on Yield of Cowpea (Vigna unguiculata L. Walp.)  

2020 ◽  
Vol 79 ◽  
pp. 9-15
Author(s):  
W.S.L.V. Fernando ◽  
Brintha Karunarathna
Keyword(s):  
Vigna Unguiculata ◽  
Crop Production ◽  
Foliar Application ◽  
Block Design ◽  
Foliar Spray ◽  
Crop Productivity ◽  
Organic Fertilizers ◽  
Significant Difference ◽  
Randomized Complete Block Design ◽  
Pod Length

Improved soil fertility is a requirement for enhanced crop production. Combination of inorganic and organic fertilizers improve crop productivity while reduce environmental degradation. An experiment was carried out at Eastern University, Sri Lanka to study the effect of Foliar Application of Banana Pseudostem Sap on Yield of Cowpea (Vigna unguiculata L. Walp.) in sandy regosol. The experiment was laid out in Randomized Complete Block Design having five treatments viz; recommended inorganic fertilizer N, P, K as basal and N as topdressing (T1), N, P, 1⁄2 K as basal with recommended N as topdressing and foliar spray of 1% , 3%, 5% and 7% banana pseudostem sap solution (T2-T5) at 3rd, 5th, 7th and 9th week after planting. The results revealed that significant difference (P<0.05) were noted on number of pods per plant at 1st and 2nd picking. Higher number of pods per plant, maximum pod length and girth were in T2 while low in T1. Sun dried weights of pods and number of seeds per pod were significantly (P<0.05) varied at each picking. Further, cowpea yield at each picking were higher in T2 compared to tested treatments. The present study suggested that, among the tested treatments N, P, 1⁄2 K as basal with recommended N as topdressing and foliar spray of 1% Pseudostem sap solution at 3rd, 5th, 7th and 9th WAP would be the most suitable for cowpea production in sandy regosol.

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 Efficiency in the use of phosphorus by cowpea genotypes

2019 ◽  
Vol 35 (4) ◽  
Author(s):  
Idaiane Costa Fonseca Almeida ◽  
Leilson Costa Grangeiro ◽  
Fábio Henrique Tavares Oliveira ◽  
Valdívia de Fátima Lima Sousa ◽  
Matheus Freitas Souza
Keyword(s):  
Experimental Design ◽  
Soil Fertility ◽  
Vigna Unguiculata ◽  
Block Design ◽  
Dry Mass ◽  
Good Ability ◽  
P Accumulation ◽  
Randomized Complete Block Design ◽  
Pod Number ◽  
Number Of Seeds

Cowpea (Vigna unguiculata (L.) Walp.) is an edible legume with good ability to fix nitrogen and not demanding soil fertility. However, some genotypes may have a greater ability to utilize the nutrients available in the soil for their growth. Thus, the objective of this work was to evaluate the efficiency of phosphorus (P) use in genotypes of cowpea. The experiment was conducted in the field and the experimental design was a randomized complete block design with four replicates arranged in a 2 x 5 factorial scheme. The treatments consisted of two P doses (0 and 60 kg ha-1 of P2O5) and five bean genotypes (Paulistinha, BRS Xiquexique, Pingo de Ouro, Corujinha, and Costela de Vaca). Each plot was formed by four plant rows, measuring 3.0 m in length, spaced 1.0 x 0.3 m, and with two plants per hole. The genotypes responded significantly to the increase in P levels in the soil, with increases in the number of seeds per pod, number of pods per plant, productivity, dry mass, and plant P accumulation. "BRS Xiquexique" was efficient and responsive, and it could be indicated as the most appropriate for cultivation in the region. "Corujinha" is the most suitable cultivar for production in high levels of P among the creole genotypes evaluated. "Costela de Vaca" and "Paulistinha" can be indicated for low P production in the soil. low P production.

scholarly journals Évaluation des performances agronomiques de douze (12) variétés de niébé vert [Vigna unguiculata (L.) walp.] au Burkina Faso.

2020 ◽  
Vol 153 ◽  
pp. 15745-15755
Author(s):  
COULIBALY ZinmanKé ◽  
BARRO Antoine ◽  
TIGNEGRE Jean-Baptiste ◽  
KIEBRE Zakaria ◽  
BATIENO Benoit Joseph ◽  
...  
Keyword(s):  
Burkina Faso ◽  
Vigna Unguiculata ◽  
Block Design ◽  
Principal Component ◽  
Research Station ◽  
En Bloc ◽  
Randomized Complete Block Design ◽  
Early Maturing ◽  
Days To Maturity ◽  
Fodder Yield

Objectif : La présente étude vise à une meilleure connaissance du niébé vert par l’évaluation des performances agronomiques de douze (12) variétés. Méthodologie et résultats : Les variétés ont été évaluées par douze (12) variables quantitatives dans un dispositif en bloc de Fisher avec trois (3) répétitions à l’INERA/Kamboinsé en 2018. L’étude a montré l’existence d’une grande variabilité agronomique au sein des variétés étudiées. Des corrélations positives et significatives ont été aussi observées entre les variables. L’Analyse en Composante Principale (ACP) des variables a permis d’identifier la date 50% floraison, le SPAD, la date niébé vert, la date 95% maturité, le nombre de graines par gousse, le poids gousses, le poids graines, le poids fanes, le rendement graines et fanes comme les paramètres les plus pertinents qui discriminent les variétés. La meilleure variété a été le niébé baguette grimpant qui possédait une date niébé vert (50 jours) et une maturité (63 jours) précoce. Conclusion et application des résultats : La variété IT83S-872 a été identifiée comme très productive en termes de gousses (77 gousses). La variété Komsaré a obtenu un rendement en graines (2,72 t/ha) et en fanes (3,20 t/ha) très appréciables. Cependant, la variété IT85F-2887 s’est montrée exceptionnelle, car en plus d’avoir une date de niébé (50 jours) vert et une maturité précoce (65 jours), elle a présenté un bon rendement en graines (2,63 t/ha) et le meilleur rendement en fanes (3,67 t/ha). Ces variétés précoces, productives en graines et en fourrage pourront être des substituts du haricot vert et contribuer efficacement à l’amélioration de la production du niébé au Burkina Faso. Mots clés : niébé vert, performances agronomiques, fourrage, Burkina Faso. Coulibaly et al., J. Appl. Biosci. 2020 Évaluation des performances agronomiques de douze (12) variétés de niébé vert [Vigna unguiculata (L.) walp.] au Burkina Faso. 15746 ABSTRACT Objective: The present study aims to improve knowledge on vegetable cowpea through the assessment of agronomic performances of 12 varieties. Methodology and results: The varieties were evaluated in a randomized complete block design (RCBD) with three (03) replications using 12 quantitative variables at the Kamboinsé research station 2018. The study revealed the existence of important agronomic variability within the studied varieties. Positive and significant correlations were also observed between variables. Principal Component Analysis (PCA) identified days to 50% flowering; the chlorophyll content (SPAD); days to vegetable cowpea; days to 95% maturity; number of seeds per pod, pods weight, seeds weight, fodder weight, seeds yield and fodder yield as the most relevant parameters. The best variety was niébé baguette grimpant, with the earliest days to vegetable cowpea (50 days) and days to maturity (63 days). Conclusion and application of results: The variety IT83S-872 has been identified as the highest pods productive (77 pods). The variety Komsare recorded a very appreciable seeds (2.72 t/ha) and fodder (3.20 t/ha) yield. However, the variety IT85F-2887 was exceptional, in addition to its earliness for days to vegetable cowpea (50 days) and days to maturity (65 days), it recorded the best seeds (2.63 t/ha) and fodder (3.67 t/ha) yields. These early maturing, high seeds and fodder producing varieties, could substitute common beans and effectively contribute to the improvement of cowpea production in Burkina Faso. Key words: Vegetable cowpea, agronomic performance, fodder, Burkina Faso.

scholarly journals Evaluation of Yield and Pigment Content of Eleven Genotypes of Green and Purple Pod Yard Long Bean (Vigna unguiculata (L.) Walp.)

2019 ◽  
Vol 6 (01) ◽  
pp. 30-40
Author(s):  
Okky Tiara Sari Dewi ◽  
Muhamad Syukur
Keyword(s):  
Chlorophyll A ◽  
Vigna Unguiculata ◽  
Block Design ◽  
Pigment Content ◽  
Chlorophyll B ◽  
Total Chlorophyll ◽  
Single Factor ◽  
Randomized Complete Block Design

The consumption of yard long bean in Indonesia is high and it has been increasing continuously, but the production and harvest area has been decreasing. New, superior long bean varieties with higher productivity are required to meet the increasing demands. The aim of this study was to evaluate the morphological and yield characters of selected purple and green long bean genotypes. The research was conducted from February to May 2018 in the Madiun district, East Java, Indonesia. The experiment was laid out in a randomized complete block design with genotypes as the single factor treatment, replicated three times. Eleven yard long bean genotypes were tested, consisting of four new genotypes, F7-013014- 4U-16-1-1, “F7-013014-4U-16-1-2”, “F7-013014- 4U-16-1-3”, and “F7-013014-7P-4-1-1”, and seven control genotypes, “KP13”, “KP14”, “KP Putih China”, “KP Putih China”, “Borneo”, “Sabrina” and “Parade”. The new genotypes, “F7-013014-4U-16-1-1, “F7- 013014-4U-16-1-2”, “F7-013014-4U-16-1-3”, and “F7-013014-7P-4-1-1” had at least one superior characters compared to the control genotypes, i.e. earlier fl owering and time to harvest, longer leaves, greater pod weight, longer pods, larger pod diameter, and higher contents of anthocyanin, carotene, chlorophyll a, chlorophyll b, and total chlorophyll. Keywords: anthocyanin, genotype, pigment, carotene, chlorophyll

scholarly journals MISSISSIPPI HAND-HARVEST, FRESH MARKET SOUTHERNPEA TRIAL–2004

HortScience ◽  
2005 ◽  
Vol 40 (3) ◽  
pp. 877a-877
Author(s):  
W.B. Evans ◽  
P. Hudson ◽  
K.L. Paridon
Keyword(s):  
Vigna Unguiculata ◽  
Block Design ◽  
Market Potential ◽  
Fresh Weight ◽  
Fresh Market ◽  
Observational Trial ◽  
Randomized Complete Block Design

Twenty southernpea (Vigna unguiculata) entries were evaluated for fresh market potential in a hand-harvested trial at Crystal Springs, Miss. Ten entries in the pinkeye or black-eye categories were evaluated in an experiment with four replicates and randomized complete block design. Another ten entries in the cream or crowder category were evaluated in an adjacent observational trial with one plot per entry. In both experiments, rows were 40 inches apart and 20 ft long. Peas were seeded in May 2004. Plots were harvested on three dates in July. Pods were weighed after harvesting ten feet of row in each plot. After resting overnight in bins, the peas were shelled and weighed. Quick Pick matured earlier than other entries in the replicated trial. Lady Pea was very late in the observational trial, to the point it was not harvested. In-shell fresh weight was greatest for CT Pinkeye, Quick Pick, Mississippi Pinkeye, Knucklehull, and Top Pick. Shelled weight was greatest for CT Pinkeye, Quick Pick, and Mississippi Pinkeye in the replicated trial. Yields of the cream and crowder peas tested in a adjacent observational trial were less than those of the pink-eye and black-eyed peas.

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