Articles

 

Page 8 of 1138, showing 50 records out of 56889 total, starting on record 351, ending on 400

August 2018

African Journal of Agricultural Research
Rural public policies and the state of smallholders: Recent evidence from Brazil

The aim of this article is to characterize the current situation of family farmers or smallholders in Brazil and establish a connection with the rural public policies that exist in the country. This study analyzed the most current available data regarding family farming in Brazil, which included almost 4.7 million smallholders and their characteristics. Two analytical tools for unsupervised learning were combined,...

Author(s): Gabriel Paes Herrera, Fernando Silva Bernardes, Reginaldo Brito da Costa, Benedito Albuquerque da Silva, Dany Rafael Fonseca Mendes and Michel Constantino  

August 2018

African Journal of Biotechnology
Simple and rapid detached leaf technique for screening common beans (Phaseolus vulgarise L.) in vitro against angular leaf spot (Pseudocercospora griseola) disease

A rapid and reliable detached-leaf technique was developed for screening common bean (Phaseolus vulgaris) genotypes against angular leaf spot (ALS) disease caused by Pseudocercospora griseola. It is helpful to differentiate between susceptible and resistance common bean genotypes. Detached leaves of common bean tested genotypes were inoculated by immersing them into a spore suspension followed by placing into petri...

Author(s): Yayis Rezene, Kassahun Tesfaye, Clare Mukankusi, Esther Arunga and Paul Gepts  

August 2018

African Journal of Biotechnology
Isolation and regeneration of protoplasts from leaf explants of Rhyncholaelia digbyana

A protocol for the isolation and regeneration of protoplasts from leaf explant of Rhyncholaelia digbyana is presented. The protoplasts were isolated using hemicellulase enzymes at 1.5, 2.25, and 3% (w/v), pectinase at 0.5 and 0.75% (w/v) and cellulase at 1 and 2% (w/v). Protoplast counting was carried out with a Neubauer camera and an optical microscope at 40X, and viability was determined with Evans blue dye at 0.025%...

Author(s): Luis Alberto Mota-Narváez, Gilbert José Herrera-Cool,Teresa del Rosario Ayora-Talavera, Nancy Santana-Buzzy, and Guadalupe López-Puc  

August 2018

African Journal of Biotechnology
Detection of genetically modified DNA in processed maize and soybean products in Nigeria

Cultivation and commercial utilization of genetically modified (GM) crops has significantly increased in many parts of the world and particularly in developing countries where food security is a challenge. Despite stringent regulations requiring that food made from GM foods should be properly labelled, evidence of unlabelled foods made from GM crops sold in local markets in many of these countries is increasing. This...

Author(s): Andrew Chibuzor Iloh, Paul Chidozie Onyenekwe and Opeolu Oyejide Ojo,  

August 2018

African Journal of Biotechnology
Preservative potentials of essential oils of three Nigerian spices in mixed fruit juice and their antioxidant capacity

The study was conducted to evaluate the preservative potentials of essential oils (EOs) of Piper guineense, Xylopica aethiopica and Tetrapleura tetraptera in mixed fruit juice and determine their antioxidant capacity. The preservative effect at varying concentrations was evaluated using S. cerevisiae, S. aureus and B. cereus as test isolates. The antioxidant properties were determined using 1,1-...

Author(s): Ogueke Chika C., Nnadi Nkechi B., Owuamanam Clifford I., Ojukwu Moses, Nwachukwu Ikenna N., Ibeabuchi Chidi J and Bede Evelyn N.

August 2018

African Journal of Microbiology Research
Molecular detection and characterization of Escherichia coli, Salmonella spp. and Campylobacter spp. isolated from broiler meat in Jamalpur, Tangail, Netrokona and Kishoreganj districts of Bangladesh

The study was conducted to isolate, identify and characterize bacterial samples from broiler meat collected from 20 different upazilla markets of Jamalpur, Tangail, Netrokona and Kishoreganj districts of Bangladesh. A total of 20 samples were subjected to bacteriological isolation and identification, and the isolated bacteria were subjected to antimicrobial susceptibility testing using disc diffusion method. Among the...

Author(s): Md. Kamrul Islam, S. M. Lutful Kabir, A. K. M. Ziaul Haque, Y. A. Sarker and M. H. Sikder  

August 2018

African Journal of Microbiology Research
Screening of human diarrhoeal samples in Mymensingh city of Bangladesh for the isolation, identification and antimicrobial resistance profiles of Campylobacter spp.

Campylobacter spp. (Campylobacter jejuni and Campylobacter coli) are one of the major cause of food-borne bacterial diarrhoea in human worldwide. This study was conducted for the isolation, identification and antimicrobial resistance profiling of Campylobacter spp. from diarrhoeal samples of human collected from Surya Kanta (SK) hospital, Mymensingh Medical College, Mymensingh during the period of August 2016 to October...

Author(s): Sudarsan Karmaker, S. M. Lutful Kabir, A. K. M. Ziaul Haque, Mohammad Ferdousur Rahman Khan and Yousuf Ali Sarker  

August 2018

African Journal of Microbiology Research
Assessment of dominant bacterial strains isolated from Ntoba mbodi, an indigenous African alkaline-fermented food, and their potential enzyme activities

Ntoba mbodi is a stable and long-life alkaline-fermented food and the domestic-scale production depends upon microorganisms from the local environment. Previous studies on bacteria in Ntoba mbodi have reported the presence of Bacillus related species and other bacterial taxa. But the abundance of these bacteria in Ntoba mbodi still needs to be determined to assess their ecological importance in this particular...

Author(s): Didine Priscilla Moutou-Tchitoula, Etienne Nguimbi, Stéphanie Giusti-Miller, Philippe Mora, Simon Charles Kobawila, Edouard Miambi  

August 2018

African Journal of Microbiology Research
Isolation and characterization of starch degrading rhizobacteria from soil of Jimma University Main Campus, Ethiopia

Starch degrading bacteria are important for different industries such as food, fermentation, textile, and paper. The aim of this study is to isolate and characterize bacteria able to degrade starch from the rhizospheres of various plants at four sites located in Jimma University main campus. Collected soil samples were labeled as kobo (AJUMC), Avocado (BJUMC), Banana (CJUMC), and Cana indica (DJUMC) respectively. Soil...

Author(s): Gudeta Dida  

August 2018

African Journal of Business Management
How do teams become effective? A literature review and implication for Ethiopia

Teams have been recognized as the heart of organizations in previous decades and proved to be so in the current situation. However, in recent years different global forces have pushed organizations to their limit and forced them to restructure work and teams. Thus, this paper reviews articles on team effectiveness from 2000 to 2017 with the help of Google Scholar Search Engine using key words “teamwork” and...

Author(s): Mohammed Abdulnasir Abdulmelike

August 2018

African Journal of Business Management
Measuring employee performance in Gweru and Kwekwe city councils in midlands province, Zimbabwe

For organizations to measure the performance of its employees there is a need to have key performance indicators and performance standards set.  The current study at Gweru and Kwekwe City Councils in Zimbabwe assessed eight (8) performance aspects, which are quality work, employee output, communication and dependability (customer), controlling of costs (financial), planning, team working, problem solving and...

Author(s): Vonai Chirasha, Crispen Chipunza and Lewis Dzimbiri  

August 2018

African Journal of Business Management
Chinese Investment in Bangladeshi RMG Sector: Challenges and Opportunities

Ready Made Garments (RMG) sector is one of the most potential sectors of earning foreign capital to improve economic growth. Bangladesh is the great place for Chinese investors to invest in RMG sector as its export trend is increasing day by day. The main objective of this research paper was to find out opportunities and challenges of Chinese investment in Bangladesh. Data were collected from different secondary...

Author(s): Mir Sohrab Hossain, Nusrat Zahan Lopa and Md. Saidur Rahman  

August 2018

Educational Research and Reviews
The examination of the link between academic and sports performance in competing rhythmic gymnasts in secondary school

This study, investigating whether sports has a positive impact on students’ academic life’ aims to compare the grade point averages of competing rhythmic gymnasts and 7th grade students not engaged in any branch of sports. The study was conducted with female secondary school students (n=80). The study group was divided into two: The first group (n=40) comprised top 40 rhythmic gymnasts (height:...

Author(s): Sezen Çimen Polat             

August 2018

Educational Research and Reviews
The frequency of using idioms in writing for the students learning Turkish as a foreign language

In foreign language teaching, the transmission of the culture within which the target language grows is as important as teaching new words and grammar. All elements of the culture have their own special places within the vocabulary of the language. Reflecting not only the linguistic structure but also the culture of the society to which they belong, idioms pose utmost importance for foreign language teaching. The aim of...

Author(s): Fatma Bolukbas Kaya and Mehmet Yalcin Yilmaz  

August 2018

Educational Research and Reviews
The moral and citizenship education methods performed in the last period of Ottoman

The present study aims to investigate the subjects of the works written on moral and citizenship education during the Tanzimat period and after and the methods considered for these courses. The other aim of this study is to demonstrate that the Ottoman educators were not unaware of the methods implemented in the lessons in today’s modern education system and the education system of Ottoman was well aware of these...

Author(s): Sabri Becerikli and Sevda Gülşah Yıldırım  

August 2018

Journal of Medicinal Plants Research
Evaluation of antiplasmodial potential of Aloe barbadensis and Allium sativum on plasmodium berghei-infected mice

A significant percentage of the developing countries are living in malaria-endemic communities and are prone to contacting the disease. The fight against malaria is faced with the occurrence of widespread resistance of Plasmodium falciparum to the available anti-malarial drugs. Thus, this study evaluates the anti-malarial activity of extracts of Aloe barbadensis and Allium sativum in Plasmodium berghei infected mice. To...

Author(s): Nassar Sulaiman Adebayo and Oyewole Motunrayo  

August 2018

Journal of Medicinal Plants Research
Medicine bottled (garrafada): Rescue of the popular knowledge

Using plants to treat health problems is an ancient practice that is still practiced today. One way that plants are used to improve health is through medicine bottled (garrafada). A medicine bottled is a homemade mixture of medicinal plants added to a solvent. Medicines bottled are medicinal mixtures that have been widely used, especially by residents of rural areas. Therefore, the goal of this study was to determine...

Author(s): Graciela da Silva Miguéis, Rosa Helena da Silva, Germano Guarim-Neto and Geraldo Alves Damasceno Júnior  

August 2018

Journal of Medicinal Plants Research
Comparison of several hydrophilic extracts of Polypodium leucotomos reveals different antioxidant moieties and photoprotective effects in vitro

Oral photoprotection can be used to prevent photocarcinogenesis and photoaging. It is mainly based on the presence of antioxidant moieties in phytochemical extracts. The appearance of different botanical formulations endowed with apparently similar properties requires their side-by-side examination using an unbiased approach. The objectives of this study were to determine the antioxidant properties of several extracts...

Author(s): Salvador González, Silvia R Lucena, Pablo Delgado and Angeles Juarranz  

August 2018

African Journal of Agricultural Research
Herbicidal effects of Datura stramonium (L.) leaf extracts on Amaranthus hybridus (L.) and Tagetes minuta (L.)

Evolution of weeds resistant to herbicides demands new solutions to cope with the problem since economic losses generated by weeds can be higher than those caused by insect pests. Bioactive compounds known as allelochemicals have the potential to act as natural herbicides in weed management in agro-ecosystems. Laboratory, pot and greenhouse experiments were carried out to investigate the herbicidal effects of Datura...

Author(s): Nyasha Sakadzo, Innocent Pahla, Simbarashe Muzemu, Ronald Mandumbu and Kasirayi Makaza  

August 2018

African Journal of Agricultural Research
Implications of climate change and variability on food security in Kenya

This study assessed the impact of climate change and climate variability on food security in Kenya based on a sample size of 270 farmers randomly selected from semi-arid agro-ecological zones in Kenya. Both primary and secondary data were used in the present study. Data analysis was conducted using descriptive statistics and regression models. The results revealed that increase in temperature and reduction in rainfall...

Author(s): Irene Nambuya Musebe, Abdi-Khalil Edriss, Beston Billy Maonga, Harwick Tchale, Steven Mbogo and Richard Onyango Musebe  

August 2018

African Journal of Agricultural Research
Handling and utilization pattern of cattle milk and milk products in Northern Ethiopia

A study was carried out in Enderta district, northern Ethiopia, with the objective of investigating traditional cattle milk and butter production, off take and traditional handling and utilization pattern of bovine milk and butter. Respondents who have milking cows and experience of dairying were purposively selected for the study. A semi structured questionnaire and checklist were prepared to collect the data through...

Author(s): Tsadkan Zegeye and Gurja Belay  

August 2018

African Journal of Agricultural Research
Foliar application of bio-fertilizers influenced the endogenous concentrations of phytohormones and amino acids in leaves and roots of olive trees (Olea europaea L. cv. Chemlali)

The chemical composition of olive leaves and roots of Chemlali variety was evaluated regarding the contents of amino acids and endogenous phytohormones under foliar application of biofertilizers (F1: rich in nitrogen (N), phosphorus (P), potassium (K); F2: rich in calcium (Ca); F3: application of F1 and F2). The results of this study demonstrated significant effects of tested fertilizers on the concentrations of amino...

Author(s): Olfa Dabbaghi, Meriem Tekaya,  Sevgi Öden, Tim Willems, Faouzi Attia, Mohamed Hammami, Els Prinsen and  Beligh Mechri  

August 2018

African Journal of Agricultural Research
Multivariate analysis of phenotypic variability in Tef [Eragrostis tef (Zucc.) Trotter] genotypes from Ethiopia

Tef [Eragrostis tef (Zucc.) Trotter] is an important food crop in Ethiopia. The present research was conducted to characterize the phenotypic variability of 68 tef genotypes collected from Ethiopia. Where a Bi-replicated 7×10 alpha lattice design was used to evaluate the 70 tef genotypes at Holetta and Debre Zeit Research Centers during 2015. Based on the results of cluster analysis (CA), genotypes were grouped...

Author(s): Thomas Tsige, Andagrachew Gedebo and Kebebew Assefa  

August 2018

African Journal of Agricultural Research
Identification of important morphological traits in Mozambican sorghum [Sorghum bicolor (L.) Moench] germplasm using multivariate analysis

Classification of sorghum [Sorghum bicolor (L) Moench] breeding material based on multiple crucial characters is important towards the possible formation of homogeneous groups of genotypes and groups that can be exploited in the identification of parents for use in a breeding program. The objective was to determine the morphological characters that distinguish desirable breeding material and group the genotypes of...

Author(s): Eduardo Mulima, Julia Sibiya, Cousin Musvosvi and Egas Nhamucho,  

August 2018

African Journal of Pharmacy and Pharmacology
Study on increasing the solubility and dissolution rate of sulfamethoxazole by cyclodextrins

The aim of this study was to enhance the solubility and dissolution rate of sulfamethoxazole (SMZ) by preparing the inclusion complexes with β-cyclodextrin (β-CD), hydroxypropyl-β-cyclodextrin (HPβ-CD) and γ-cyclodextrin (γ-CD). The effect of the type of cyclodextrins used for the preparation of complexes, on the in vitro dissolution profiles and solubilities in different mediums (pH 4.5...

Author(s): Jülide Şahin and Nurten Özdemir  

August 2018

African Journal of Pharmacy and Pharmacology
Extrapyramidal and purgative effects of fluphenazine in turkeys

Fluphenazine is a typical antipsychotic medicine with extrapyramidal effects. It was tested for purgative and neurological effects in turkeys. The results showed that the drug induced purgation at a dose range of 5 to 200 mg/kg body weight causing highest frequency of fecal droppings (7) at 10 mg/kg in 7 min and lowest frequency of dropping (1) at 50 mg/kg. However, the number of fecal droppings was not linearly...

Author(s): Saganuwan Alhaji Saganuwan  

August 2018

African Journal of Pharmacy and Pharmacology
Anti-ulcer and hematological properties of virgin coconut oil (VCO) against indomethacin-induced gastric ulcer in experimental rats

Previous studies have reported various health benefits of virgin coconut oil (VCO) such as weight management, treatment of burns, infections, improve phagocytic activity, etc. The present study was conducted to investigate the anti-ulcer and hematological properties of VCO against indomethacin-induced gastric ulcers using rat model. Twenty-four Wistar albino rats were used for the study and were divided into 6 groups of...

Author(s): Joshua Onyeagoziri Okafor, Parker Elijah Joshua and Chimere Young Ukegbu  

August 2018

African Journal of Biotechnology
Development and validation of a high performance liquid chromatography-diode array detection (HPLC-DAD) method for the quantification of rutin and isoquercetin in Morus nigra L. (Moraceae)

Morus nigra L. is widely used by the population of the São Francisco Valley (Brazil) for the treatment of several diseases such as hypertension, diabetes, arthritis etc. The objective of this study was to develop and validate an analytical method that is capable of identifing and quantifing flavonoids in the ethanolic crude extract (Mn-EtOH) and its ethyl acetate phase (Mn-AcOEt) obtained from M. nigra leaves...

Author(s): Pedrita Alves Sampaio, Grasielly Rocha Souza, Pedro Guilherme Sousa de Sá, Nathália Andrezza Carvalho de Souza, José Marcos Teixeira de Alencar Filho, Pedro José Rolim-Neto, Jackson Roberto Guedes da Silva Almeida and Larissa Araújo Rolim  

August 2018

African Journal of Biotechnology
Effect of spices on the microbiological quality of Hibiscus sabdariffa (zobo) drink and molecular characterization of the associated spoilage organisms

Hibiscus sabdariffa drink (zobo) was preserved with three concentrations of cloves (Syzygium aromaticum), ginger (Zingiber officinale) and mixture of cloves and ginger, respectively while the control had no spice. The bottled H. sabdariffa drink was stored at 28 ± 2°C for 16 days. The total bacteria and fungi counts were determined every 48 h during storage. Bacterial and fungal growths were not detected in...

Author(s): Adeoye, B. K., Oyewole, O. B. , Idowu, M. A., Obadina, A. O., Ani, I. F. and Ngozi, E. O.    

August 2018

African Journal of Biotechnology
Camwood (Baphia nitida) alcoholic extract: A suitable counter stain for haematoxylin in the demonstration of liver and kidney histomorphology

The counter staining ability of Camwood (Baphia nitida) alcoholic extract and its electrostatic compatibility with haematoxylin was determined. One gram of locally sourced red paste was subjected to simple extraction in 100 ml of 70 and 95% alcohol, respectively. Primary staining of buffered formalin fixed, paraffin embedded liver and kidney tissues was done with haematoxylin followed by counter staining with extract...

Author(s): Omowumi, B. J. , Benard, S. A., Afolabi, O. O., Fowotade, A. A. and Olutunde, O. A.  

August 2018

African Journal of Biotechnology
Genetic diversity among elite chickpea (Cicer arietinum L.) varieties of Ethiopia based on inter simple sequence repeat markers

The inter simple sequence repeat (ISSR) marker was used in this study for genetic fingerprinting and identification of released chickpea varieties and for the determination of the genetic relationships among these cultivars. A total of 19 released chickpea varieties were subjected to ISSR analysis with the objective of evaluating the genetic diversity among the cultivars. A total of 20 ISSR primers were initially...

Author(s): Zerihun Jida, Shiferaw Alemu and Destaw Mullualem

August 2018

African Journal of Microbiology Research
Low accuracy of the McFarland method for estimation of bacterial populations

The McFarland method is designed to estimate bacterial concentrations by means of a turbidity scale (absorbance) which consists of a series of tubes previously calibrated, and with an optical density produced by the precipitation of barium sulphate. This absorbance is compared to bacterial populations. The most used absorbance is the one corresponding to 0.5 on that scale, which assumes a population of 1.5×108...

Author(s): Lozano Guzmán Eduardo, Beatriz Santos Ramirez, Cervantes Flores Maribel, María Guadalupe Nieto Pescador and Francisco Javier Moreno Cruz  

August 2018

African Journal of Microbiology Research
Efficacy of plasma micro broth dilution assay for antifungal susceptibility testing of Candida albicans

Fungal infection and antifungal drug resistance especially in the treatment of immuno suppressive syndromes, has created an increased demand for reliable and affordable methods of in vitro testing of antifungal agents that can assist in their diagnosis. This study aimed to investigate antifungal susceptibility testing method that is reliable, flexible, affordable, accurate, cheap and less time consuming in order to...

Author(s): Fon E. F., Oko A. O., Chia P. N. and Yongabi K. A.  

August 2018

African Journal of Microbiology Research
Antimicrobial susceptibility pattern of Gram negative bacteria isolated from intensive care units in Al-Ahsa, Kingdom of Saudi Arabia

Antimicrobial resistance by bacteria isolates continues to receive attention globally. This investigation looks into the antibiotic susceptibility pattern of Gram negative bacteria isolated from intensive care unit patients in Al-Ahsa, KSA. Bacteria samples were classified based on the CDC criteria for the definition of ICU infections. Gram negative bacteria had been isolated on MacConkey agar using basic...

Author(s): Lorina Badger-Emeka, Abdulrahman Abdulhadi Al-Sultan, Abdullatif Sami Alrashed, Mohammed Sami Alhaddad and Afnan Khalifah Al-Barjas  

August 2018

African Journal of Microbiology Research
Isolation and identification of Escherichia coli, Salmonella and Pasteurella from holding grounds of live-bird markets at Addis Ababa, Ethiopia

A cross-sectional study was conducted to isolate and identify of Escherchia coli, Pastuerella multocida, Salmonella gallinarum and Salmonella pullorum from the holding grounds of five purposively selected Addis Ababa live bird markets from November 2016 to May 2017 using bacterial culture, grams staining and biochemical testing. A total of 90 pooled fecal samples were collected as both deep (35) (bottom layer of the...

Author(s): Surra Gebeyehu, Dereje Tulu and Chaluma Negera  

August 2018

Scientific Research and Essays
Probabilistic seismic assessment of arch dams in Turkey

Arch dams are of great importance in the world. In Turkey, there are 1200 existing dams with different types. Arch dams are important due to their economic resource in irrigation and water supply which are significant to the homeland security and the agricultural economy. Researchers have been carrying out various studies on dams and their seismic resistance especially after the earthquakes that occurred in the recent...

Author(s): Kasim A. Korkmaz and Asuman I. Carhoglu  

August 2018

International Journal of Physical Sciences
Radionuclide concentration: The coal ash effect

Radionuclide concentrations in coal ash, soil mixed with coal ash and soil were determined using the gamma spectroscopic method. The average activity concentrations of 226Ra, 232Th, and 40K in coal ash samples were found as 35.0, 5.8, and 109.4 Bq/kg, respectively. The average activity concentrations of 226Ra, 232Th and 40K in soil mixed with coal ash samples varied from 21.2 to 30.8, 48.6 to 82.7, and 162.5 to 180.1...

Author(s): Amakom M. Chijioke, Orji E. Chikwendu, Iroegbu Chinedu, Eke C. Benedict, Nkwoada U. Amarachi, Madu D. Afam, Ugochuwu G. Kosisochukwu and Oforma J. Tochukwu  

August 2018

African Journal of Agricultural Research
Farmers’ synergistic selection criteria and practices for livelihood security through the sustainable uses of on-farm Sorghum landrace diversity, Ethiopia

The relationships among the multiple criteria that farmers in this study area, the north Shewa and south Wollo regions of Ethiopia, use to select which sorghum landraces to grow were examined in order to assess the extent of synergistic relatedness among them as they fulfilled their roles in meeting the farmers’ goals. Surveys were conducted on 300 randomly selected farmers’ fields during the 2011/2012...

Author(s): Awegechew Teshome, Kenneth Torrance and Laura Breuer  

August 2018

African Journal of Agricultural Research
Physiological quality of seeds of shepherd's purse (Zeyheria montana M. Bignoniaceae) as a function of substrate temperature and storage

The present study aimed to investigate the influence of different substrates, temperatures and storage conditions on shepherd's purse seed quality. It was evaluated in germination paper substrates Germitest®, vermiculite, sand and Plantmax®, and roller temperatures of 25, 30, 15-25 and 20-30°C. Longevity was measured by the temporal response to different packaging (paper, plastic and aluminum) and...

Author(s): Sara Dousseau Arantes, Izabel de Souza Chaves, Lúcio de Oliveira Arantes, Amauri Alves de Alvarenga, Rafael Costa de Sant’Ana, Dayane Littig Barker, Daniele Freisleben Lavanhole and Sheila Cristina Prucoli Posse  

August 2018

African Journal of Agricultural Research
Agricultural mechanization in small rural properties in the State of Piauí, Brazil

The use of machines in the rural sector increases crop productivity in the field, making it essential to use these technologies for a successful rural enterprise in the market. In this way, this study aimed to analyze the current situation of agricultural mechanization in farms of small producers. The study was conducted in State of Piauí, in Brazil with 30 farmers in the region. This was a quantitative and...

Author(s): Antônio Veimar da Silva, Carla Michelle da Silva, Wagner Rogério Leocádio Soares Pessoa, Milena Almeida Vaz, Karine Matos de Oliveira and Francisco Sérgio  Ribeiro dos Santos  

August 2018

African Journal of Agricultural Research
Evaluation of chemical and non-chemical weed control practices on weed communities and maize yield in two agroecological zones of Swaziland

Manual weeding, maize-cowpea intercropping, pre-emergence (PRE) and early post-emergence (EPOST) herbicide applications comprised ten weed control practices evaluated in the 2015-16 cropping season on weed species structure and maize (Zea mays L.) yield in the Middleveld and Highveld of Swaziland. The herbicides used were Harness (acetochlor) and Dual Gold (S-metolachlor) as pre-emergence applications and Micro-Tech...

Author(s): T. L. Mncube and H. R. Mloza Banda  

August 2018

African Journal of Agricultural Research
Public policy on the family farming sector in Brazil: Towards a model of sustainable agriculture

This study is based on a review of the literature that analyses the repercussions of the principal public policies established for the promotion of the family farming sector in Brazil. In this review, the processes that have contributed to the establishment of these policies are assessed critically, together with their mechanisms and the connections for the evaluation of their contributions to the promotion of...

Author(s): Flaviana Cavalcanti da Silva, Antonio Lázaro Sant’Ana and Ana Heloisa Maia  

August 2018

African Journal of Agricultural Research
Moisture content, moisture-related properties and agricultural management strategies of the Benue floodplain vertisols in North Cameroon

Vertisols are widespread in North Cameroon, but are undercultivated due to difficulties linked to their shrink-swell behaviour under different moisture conditions. Eighteen vertisol samples from five profiles representative of the studied area (Benue floodplain in North Cameroon) were studied to establish a relationship between moisture and physico-chemical characteristics and supplement data for planning sustainable...

Author(s): Primus Azinwi Tamfuh, Emmanuel Djoufac Woumfo, Emile Temgoua, Alexis Boukong and Dieudonné Bitom  

August 2018

African Journal of Agricultural Research
Nitrogen fertilization in Oncidium baueri seedling growth

This study was conducted with the objective of evaluating the nitrogen fertilization in orchid seedling formation. The experiment was conducted in a greenhouse environment with a coated polypropylene mesh with retention capacity of 60% of the solar radiation flux at the greenhouse of the Department of Agronomy of State University of Londrina – PR, Brazil. One year old seedlings of the orchid species Oncidium...

Author(s): Jenniffer Aparecida Schnitzer, Osmar Rodrigues Brito and Ricardo Tadeu de Faria  

August 2018

African Journal of Biotechnology
In vitro regeneration of Neocarya macrophylla (Sabine) Prance, wild fruit of Niger

Neocarya macrophylla is a spontaneous fruit species that constitutes the dominant population of Dallol Bosso in Southwestern Niger. In order to test the in vitro regeneration ability of this species, micro-propagation was applied to micro-cuttings from young almond seedlings. The Murashige and Skoog basal medium was enriched with several concentrations of naphthaleneacetic...

Author(s): Aboubacar Kolafane and Sidikou Djermakoye Seyni Ramatou  

August 2018

African Journal of Biotechnology
Biomanagement of Rose and carnation wastes in flower industries with three epigeic earthworm species: Eisenia fetida, Eisenia andrie and Dendrobanae veneta

The horticulture sector in Ethiopia is being challenged by multifaceted hitches, among which managing excess wastes produced from the farms and minimizing the cost of inorganic fertilizers are the major ones. The performance of three epigeic earthworm species, Eisenia fetida, Eisenia andrie and Dendrobanae veneta, in managing flower (Rose and Carnation) wastes through vermicomposting was evaluated. The study was done...

Author(s): Gezahegn Degefe, Girum Tamire and Said Mohammed  

August 2018

African Journal of Biotechnology
Effect of sample extraction, preparation methods on HPLC quantification of plumbagin in in vivo and in vitro plant parts of Plumbago zeylanica L.

Plumbagin is an important therapeutic compound of Plumbago zeylanica L., the commercial demand of this compound warrants optimizing a suitable method to isolate plumbagin in large scale. The present study was undertaken to obtain the maximum recovery of plumbagin content by employing different extraction methods viz., ultra-assisted extraction (UAE), maceration extraction (ME), soxhlet extraction (SE), serial soxhlet...

Author(s): Krishna Muralidharan, Malaiyandi Jayanthi, Ramasamy Surendran, Muthusamy Balasubramanian and Shanmugam Girija  

August 2018

African Journal of Biotechnology
Co-expressing house fly cytochrome P450 6A1 and human cytochrome P450 reductase in Escherichia coli to bioconvert insecticide aldrin

Aldrin used in agricultural as well as industrial or home pest control is known to be a persistent organic pollutant, having chronic adverse effects on wildlife and humans. The degradation of aldrin has drawn a lot of attentions. In this study, house fly cytochrome P450 6A1 (CYP 6A1) or both house fly cytochrome P450 6A1 and human NADPH-P450 reductase (CPR) together was expressed in Escherichia coli cells to study their...

Author(s): Yating Wu, Yong Li, Xiaosheng Liang, Nan Jiang and Yunhua Wu  

August 2018

African Journal of Biotechnology
Isolation and identification of bacterial endophytes from Crinum macowanii Baker

The widespread distribution of Crinum macowanii across the African continent has entrenched the plant’s medicinal usage in treating diverse diseases. While its phytochemistry is well established, its microbial symbionts and their utility have not been described. As such, five bacterial endophytes, viz. Staphylococcus species C2, Staphylococcus species C3, Bacillus species C4, Acinetobacter species C5 and...

Author(s): Rebotiloe F. Morare, Eunice Ubomba-Jaswa, and Mahloro H. Serepa-Dlamini  

August 2018

African Journal of Microbiology Research
Isolation of a Lactobacillus strain from aguamiel and preliminary characterization of its antimicrobial components

The aim of the study was to characterize the antimicrobial components of Lactobacillus paracasei KSI.  In the study, a L. paracasei KSI strain was isolated and identified from aguamiel using a 16S rRNA, hsp, recA and rpoBgenes sequencing. The antimicrobial capacity of the L. paracasei strain KSI was determined by agar double layer diffusion technique, while the antagonistic activity of the cell-free extract (E-KSI)...

Author(s): Benítez-Serrano Juan Carlos, Martínez-Pérez Laura, Rosas-Murrieta Nora Hilda, Brambila-Colombres Eduardo Miguel, Hernández-Castro Rigoberto, Rosales-Pérez Mónica and Aguilar-Alonso Patricia  

Page 8 of 1138, showing 50 records out of 56889 total, starting on record 351, ending on 400