scholarly journals Insects Associated with Cucumbers (Cucumis SativusL.) At Bamunka-Ndop(North West Region, Cameroon)

2020 ◽  
Vol 11 ◽  
pp. 145-159
Author(s):  
Esther Nadine Otiobo Atibita ◽  
Champlain Djieto-Lordon ◽  
Fernand-Nestor Tchuenguem Fohouo
Keyword(s):  
Species Diversity ◽  
Relative Humidity ◽  
Cucumis Sativus ◽  
Relative Abundance ◽  
Insect Species ◽  
North West ◽  
Yield And Quality ◽  
West Region ◽  
Stems And Leaves

Studies on insects associated with cucumbers (Cucumis sativus) in Bamunka-ndop (North-West, Cameroon) under field conditions were conducted in 2017 and 2018 from April to July. The insect species diversity, the relative abundance, the frequency of visits and guilds were recorded on the plant from 7 am to 6 pm in a 2 hours time slots. Insects were found on the stem, leaves and flowers of Cucumber. There were 10 insect species belonging to 4 Orders. Out of these, four species belonged to Hymenoptera (54.15%), whereas the Coleoptera (33.18%), the Orthoptera (7.83%) and the Diptera (4.84%) owned two species each. Formica sp. being the most represented insect (24.42%) followed by A. mellifera (21.66%). Nectarivorous, pollinivorous, stems and leaves feeders and flowers and leaves feeders were found on the crop. The peak of activities of all the insect species was situated between 10 am and 12pm even though the temperature and the relative humidity of the study site appear not to affect their activities on the plant. These studies therefore indicated that the insects associated to cucumber should be exploited to work on their activities on cucumber and enhancing yield and quality of the fruits.

scholarly journals Spatial Distribution of Insect Diversity in Selected Locations within Forestry Research Institute of Nigeria, Ibadan, Nigeria

2021 ◽  
Vol 25 (7) ◽  
pp. 1249-1255
Author(s):  
O.A. Aina-Oduntan ◽  
Q.A. Onilude ◽  
J.A. George-Onaho ◽  
A.I. Woghiren ◽  
O.R. Jeminiwa
Keyword(s):  
Species Diversity ◽  
Relative Abundance ◽  
Habitat Modification ◽  
Insect Species ◽  
Line Transect ◽  
Microsoft Excel ◽  
Forestry Research ◽  
Significant Difference ◽  
Ibadan Nigeria ◽  
Research Institute

With the increase in the rate of tree removal and construction of buildings within the Forestry Research Institute of Nigeria premises, there has been concomitant rise in habitat modification. These changes in habitat composition affect the insect population. This study therefore investigated the insect species diversity and abundance within some selected locations within FRIN with the view to determining different insect species available in FRIN premises. Sweep nets were used to trap the insects along a predetermined line transect. Data were analyzed using Microsoft Excel 2007 and Paleontological Statistics were used for the data analysis. Descriptive statistics, one-way analysis of variance (ANOVA) and species diversity and composition were all assessed. A total number of 1073 individual insects belonging to 6 orders, 27 families and 34 species were recorded across the three locations. Out of this, Order Lepidoptera had the highest relative abundance (53%), followed by Coleoptera (22%), then by Hymenoptera, Hemiptera, Heteroptera and Diptera with 10%, 9%, 4% and 2% relative abundance respectively. The result of ANOVA showed that there was no significant difference in species composition/richness across the locations at probability level of 5%. The insect species diversity, evenness and richness also varied across the locations. This study therefore, brings to the fore the diversity and abundance of insects within FRIN premises and highlighted the need for a more intensive study by the entomology section and for sustainable actions to be taken in conserving beneficial rare species while, managing the abundant pestiferous ones.

scholarly journals Spoilage and microbial quality of crude palm oil from the North-west Region of Cameroon

2020 ◽  
Vol 14 (9) ◽  
pp. 304-312
Author(s):  
Alima Senkoh Ngangjoh ◽  
Niba Aziwo Tatanja ◽  
Aba Richard Ejoh
Keyword(s):  
Palm Oil ◽  
Microbial Quality ◽  
Crude Palm Oil ◽  
North West ◽  
The North ◽  
West Region

scholarly journals Seasonal Variations in the Hydrogeochemistry and the Domestic-Agro-Industrial Water Quality of the Granite-Gneiss Fractured Rock Aquiferous formations in Wum, North West Region, Cameroon

2019 ◽  
Vol 7 (1) ◽  
pp. 1-16
Author(s):  
Akoachere RA ◽  
Keyword(s):  
Water Quality ◽  
Seasonal Variations ◽  
Fractured Rock ◽  
Granite Gneiss ◽  
Total Hardness ◽  
Study Objective ◽  
North West ◽  
West Region ◽  
Northwest Region

Wum the capital of Men chum Division is an important agricultural area in the Northwest Region in Cameroon vital for the food security of the country. The study objective was to determine and evaluate the seasonal variations during four hydrogeological seasons; dry (March), drywet (June), wet (September) and wetdry (December) in the groundwater chemistry, groundwater rock interactions and domestic-agro-industrial groundwater quality using hydrogeochemical tools; physicochemical parameters, ionic ratios, gibbs diagrams, piper diagrams, durov diagrams, Total Hardness HT, Water Quality Index WQI, Sodium Adsorption Ratio SAR

scholarly journals Comparative Preservative Potential of Essential Oils of Ocimum gratissimum from Bambili of the North West and Mbonge of the South West Regions of Cameroon on Scomber scombrus

2021 ◽  
pp. 20-29
Author(s):  
Ngwasiri Pride Ndasi ◽  
Tsi Celestine Angu ◽  
Wilson Agwanande Ambindei ◽  
Nantia Akono Edouard ◽  
Diane Youmbi Yimta ◽  
...  
Keyword(s):  
Essential Oil ◽  
Essential Oils ◽  
Thiobarbituric Acid ◽  
Salmonella Typhi ◽  
The South ◽  
North West ◽  
The North ◽  
West Region ◽  
South West

Essential oils serve as a natural alternative to chemical or synthetic antimicrobials and antioxidants to fight against food borne pathogens or spoilage organisms, inhibiting lipid peroxidation and extending the shelf life of fish and other seafood. This study examines the antibacterial properties of essential oils from leaves of Ocimum gratissimum L. from two localities of the North West and South West of Cameroon on some pathogenic spoilage gram negative and positive bacteria isolated from mackerel, and their antimicrobial and antioxidant effectiveness on the fish quality during preservation for one month at -18oC. The plant materials were harvested from Bambili, the North West Region of Cameroon and from Mbonge, the South West Region of Cameroon and the essential oils extracted by hydro-distillation using Clevenger-type apparatus. Escherichia coli, Salmonella typhi and Staphylococcus aereus were isolated from mackerel by culture techniques and their susceptibility to the essential oils determined by well diffusion method. Psychrophilic bacteria and Enterobacteraceae counts were used to evaluate the microbiological quality of the fish during storage. Total volatile basic nitrogen and thiobarbituric acid reactive substance assays were used as indices to assess the biochemical quality of the fish during storage. Antibacterial susceptibility test showed that essential oils of O. gratissimum from the North West and South West Regions were active on all the tested microorganisms with different degree.The inhibitory diameters for essential oil from the South West Region were 28.0 mm, 27.2 mm and 26.0 mm while that for essential oil from the Bambili were 24.1 mm, 20.4mm and 21.9 mm for Staphylococcus aereus, Escherichia coli and Salmonella typhi respectively. At the end of storage periods, the values of Psychrotrophs plate counts, total volatile base nitrogen and thiobarbituric acid reactive substances for fish samples treated with essential oil from the Mbonge were 2.71log10cfu/g, 12.88 mgN/100g and 0.88 mgMDA/Kg, while that treated with North West essential oil were 3.00 log10cfu/g, 16.24 mgN/100g and 1.26 mgMDA/Kg respectively. From the obtained results, essential oil of O. gratissimum from the Mbonge was the most effective in preserving Atlantic mackerel.

scholarly journals Effect of organic nutrient management on yield and quality of cucumber (Cucumis sativus L.)

2020 ◽  
Vol 8 (1) ◽  
pp. 1521-1523
Author(s):  
DR Joshiya ◽  
JR Vadodaria ◽  
BM Nandre ◽  
MK Sharma ◽  
VR Wankhade
Keyword(s):  
Cucumis Sativus ◽  
Nutrient Management ◽  
Organic Nutrient ◽  
Yield And Quality

scholarly journals Characteristics of the Western European ecological group barley varieties in the North-Western region of the Russian Federation

2021 ◽  
Vol 36 ◽  
pp. 01025
Author(s):  
Olga Kovaleva ◽  
Kseniia Lukina
Keyword(s):  
Spring Barley ◽  
Weather Conditions ◽  
Limiting Factor ◽  
Ecological Group ◽  
North West ◽  
The North ◽  
West Region ◽  
New Varieties ◽  
Western European

In the North-West region, spring barley is the main grain fodder crop. The variety is an effective and most affordable means of increasing the harvest and quality of the grain. The studying selection material for breeding ensures success in the creation of new varieties. European varieties are characterized by resistance to powdery mildew, which is a limiting factor of breeding in the North-West region. This work aimed to find new sources of agrobiological valuable traits. In 2016-2018, which differed in weather conditions, 32 varieties of spring barley were studied on the field of the Pushkin Laboratory of VIR. As a result of studying a set of samples of the Western European ecological group, according to the main agrobiological valuable traits sources for breeding in the North-West region were identified: early maturing, semi-dwarf, large-grain variety – “Brucefield” (к-31555, parallelum, Germany); semi-dwarf, large-grain variety – “Brennus” (к-31331, nutans, France); middle-maturity, high-yielding, large-grain, semi-dwarf, resistant to lodging, with an adaptation coefficient more than 1 – “Niagara” (к-31334, nutans, France), “Tocada” (к-31341, deficiens, Germany), “Juhata” (к-31346, nutans, Germany), “KWS Alciana” (к-31348, nutans, Germany).

scholarly journals Early Flowering Pollenizers for Improved Yield and Quality of Gynoecious Pickling Cucumbers

HortScience ◽  
1997 ◽  
Vol 32 (3) ◽  
pp. 495B-495
Author(s):  
Todd C. Wehner
Keyword(s):  
North Carolina ◽  
Cucumis Sativus ◽  
Fruit Set ◽  
Early Flowering ◽  
Internal Quality ◽  
Ratio Test ◽  
Yield And Quality ◽  
Pickling Cucumbers ◽  
The U.S

Most gynoecious hybrid cucumbers (Cucumis sativus L.) grown in the U.S. require pollination for proper fruit set. Early flowering pollenizers may help yield, earliness, or quality. Two experiments were run to measure the value of early pollenizers using fields isolated from other cucumbers by at least 1 km. The first experiment used `Armstrong Early Cluster' and `Sumter' as the early and normal pollenizer, with 30 and 35 days to flower, respectively. Gy 2, Gy 3, Gy 4, and Gy 14 were used as the gynoecious pickling cucumbers. The experiment was run in 2 years (1994, 1995) and seven locations in North Carolina with two pollenizers and the four gynoecious inbreds. There were four replications of plots within each whole plot to help control variability inherent in an experiment where treatments are in separate fields. The second experiment had only 1 year (1996), but the same seven locations, four replications, and four gynoecious inbreds, but only one pollenizer (`Sumter') planted at the same time, or 2 weeks earlier than the gynoecious lines. Plots were harvested once when 30% of the fruits were >50 mm diameter. None of the differences in either experiment were significant (F-ratio test, 10% level). Therefore, it does not appear that use of early flowering pollenizers in blends with gynoecious pickling cucumbers will have a large effect on the yield, earliness, or internal quality of the crop.

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