African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 6559

Table of Content: 16 June, 2016; 11(24)

June 2016

Occurrence and estimated losses caused by cassava viruses in Migori County, Kenya

A farm survey was conducted in Kuria East and Suna West sub-counties to determine the incidence, severity and estimated losses of cassava brown streak disease (CBSD) and cassava mosaic disease (CMD) on cassava crops in farmers’ fields. The results showed that cassava is the second most important staple crop after maize in Migori County. CMD incidence ranged from 0.0 to 56.7%) in Kuria East and 10.0 to 55.0% in...

Author(s): Emily Atieno Masinde, Joshua Ondura Ogendo, Midatharahally N. Maruthi, Rory Hillocks, Richard M.S. Mulwa and Peter Futi Arama

June 2016

Village poultry production system: Perception of farmers and simulation of impacts of interventions

This study identified perception of poultry farmers’ on impact of interventions in village poultry production and quantified the impacts of interventions on flock and economic performance using modelling. A structured questionnaire was used to collect data on perceptions of poultry keeping and performances from 240 randomly selected households in two districts of Ethiopia. Crop was the major source of income, and...

Author(s): E.  Wondmeneh,, E. H. Van der Waaij, H. M. J. Udo, D. Tadelle and J. A. M Van Arendonk

June 2016

Influence of cowpea root powder and exudates on germination and radicle length in Striga hermothica, sorghum and pearl millet strains

The root parasitic weed Striga hermonthica constitutes a threat to cereals production in sub-Saharan Africa. Cowpea has been used as a rotational or a companion crop to combat the parasite on cereals with varying success. The present investigation was set to study the effects of root powder from 12 cowpea genotypes and root exudates from two genotypes on germination and radicle length in S. hermonthica, sorghum and...

Author(s): A. A. M. Rezig, T. S. Abdelhalim, M. M. Hassan, R. M. A. Abusin, H. Amani Eltayeb, H. Samejima, and A. G. T. Babiker

June 2016

The decrease of potential suitable areas and the distribution tendency of staple crops in Ethiopia under future climate conditions

Rain-fed agriculture is the most common pattern for Ethiopian smallholders, while it is sensitive to climate change in the future. In order to predict the impact of climate change and decrease the risk of food crisis in Ethiopia, the potential crops suitability of teff (Eragrostis tef), maize (Zea mays), wheat (Triticum aestivum Linn.) were simulated and suitable distribution were analyzed by using GIS-MCE...

Author(s): Zhen Tan, Yuping Yang, Yanqin Wang, Lele Wang and Guojun Sun

June 2016

Nutritional technological characterization and secondary metabolites in stored carioca bean cultivars

The recommendation of bean cultivars and the use of appropriate storage techniques allow the quality characteristics of these grains to be preserved for human consumption. The aim of this study was to characterize the effects of storage on three cultivars of the common carioca bean in raw form and to determine the relationships between storage time and technological quality parameters involved in the darkening and...

Author(s): Rose Mary Helena Quint Silochi, Silvia Renata Machado Coelho, Tabata Zingano Bischoff, Flávia Danieli Rech Cassol, Naimara Vieira do Prado and Priscila Zaczuk Bassinello

June 2016

Effect of chitosan-based coating on postharvest quality of tangerines (Citrus deliciosa Tenore): Identification of physical, chemical, and kinetic parameters during storage

In this study, chitosan-based coating was used in tangerines in a 30-day storage period, at controlled temperature of 10°C. The selected fruits presented green surface (± 90%); they were sanitized in chlorinated water (100 mg/L) then immersed in chitosan solutions at chitosan concentrations of 0.5 g/100 ml (T2), 1 g/100 ml (T3), and 2 g/100 ml (T4) and a lot was placed aside as control treatment (T1)....

Author(s): Geovana Rocha Plácido, Richard Marins da Silva, Caroline Cagnin, Maisa Dias Cavalcante, Marco Antônio Pereira da Silva, Márcio Caliari, Maria Siqueira de Lima and Luiz Eduardo Costa do Nascimento

June 2016

Azospirillum brasilense and nitrogen fertilization affecting wheat productivity

In order to optimize the use of nitrogen (N), the aim of this work was to evaluate the efficiency of foliar application of Azospirillum brasilense Ab-V5 strain, as regards the productivity of wheat plantations combined with different N doses. The experiments were carried out in four municipalities in Minas Gerais (Brazil) under randomized block design with four replications. Forty percent of the N dose was applied at...

Author(s): Junia Maria Clemente, Aurinelza Batista Teixeira Condé, Alex Teixeira Andrade,  Carine Rezende Cardoso, Iara da Mata Flor, Fábio Aurélio Dias Martins, Willian Tadeu de Lima and Cleiton Burnier de Oliveira

June 2016

Toxicity and repellency of plant extracts on Thaumastocoris peregrinus (Carpintero & Dellapé) (Hemiptera: Thaumastocoridae)

The eucalyptus bronze bug, Thaumastocoris peregrinus, is an exotic pest of eucalyptus crops that has spread worldwide. The objective of this study was to evaluate the toxicity of aqueous plant extracts at 5% of Matricaria chamomilla, Echinodorus grandiflorus, Punica granatum, Maytenus ilicifolia and Origanum majorana on T. peregrinus. For this, choice and no-choice tests were performed. Eucalyptus leaf disks were...

Author(s): Jucelaine Haas, Michele Potrich, Aline Mara dos Santos Telles, Everton Ricardi Lozano, Tatiane Luiza Cadorin Oldoni, Flavia Galvan Tedesco, Jackeline Dall Agnol de Lima and Sérgio Miguel Mazaro

June 2016

Genetic diversity assay of maize (Zea mays L.) inbreds based on morphometric traits and SSR markers

Twenty maize genotypes (19 inbred lines and a commercial hybrid) were studied assessing the extent of genetic diversity for 21 qualitative and quantitative morpho-metric traits and 18 expressed sequence tags-simple sequence repeats (EST-SSR) markers. A wide range of variation was observed among the 20 maize genotypes for quantitative traits predominantly for plant height, ear height, days to tasseling, days to silking,...

Author(s): Madhav Pandit, Manigopa Chakraborty, Z. A. Haider, Anita Pande, Rameshwar Prasad Sah and Kumar Sourav

June 2016

Control of white mold in bean plants by homeopathic medicines

Common bean (Phaseolus vulgaris) is one of the main Brazilian agricultural crop. It is affected by numerous diseases during its life cycle; one of these includes the white mold caused by the fungus Sclerotinia sclerotiorum. The objective of this study was to verify the control of white mold in bean plants by homeopathic medicines. Two tests were performed: In the first test, the medicine Calcarea carbonica was used,...

Author(s): Bruna Broti Rissato, José Renato Stangarlin, Sidiane Coltro-Roncato, Omari Dangelo Forlin Dildey, Edilaine Della Valentina Gonçalves, Laline Broetto, Odair José Kuhn, Eloisa Lorenzetti, Thaisa Muriel Mioranza, Eliana Peliçon Pereira Figueira, Tulya Fernanda Barrientos Webler and Jéssica Cristina Urbanski Laureth

June 2016

Evaluation of intraspecific hybrids of yellow passion fruit in organic farming

The objective of this work was to evaluate 14 hybrids intraspecific of yellow passion fruit aiming to select those with higher performance in an organic production system in Lençóis, Bahia, Brazil. The following variables were evaluated: Plant growth rate index, segregation for peel color, accumulated productivity, fruit physical-chemical attributes, severity of virus disease in plants and fruits, scabs in...

Author(s): Onildo Nunes de Jesus, Taliane Leila Soares, Eduardo Augusto Girardi, Raul Castro Carriello Rosa, Eder Jorge de Oliveira, Alírio José da Cruz Neto, Valeria Tebinka dos Santos and João Roberto Pereira Oliveira

June 2016

Impact of xenobiotics on microbial activity in soil cultivated with forage cactus Opuntia ficus-indica

Changes on soil microbial activity may be triggered by different management approaches and the study of the effects of such changes on xenobiotics, of non-target populations, may represent a valuable strategy to evaluate their environmental risk potential. The objective of the present study was to evaluate the effect of Phytosanitary control measures over microbial activity and genetic variability of bacteria in soil...

Author(s): Élica Santos Rios, Carlos Romero Ferreira de Oliveira, Cláudia Helena Cysneiros Matos de Oliveira, Julia Kuklinsky Sobral, José Alexandre da Silva, José Gomes da Silva Filho and César Auguste Badji

June 2016

Assessment of harvest and post-harvest factors affecting quality of Arabica coffee in Gamo Gofa Zone, Southern Ethiopia

The quality of coffee produced in Gamo Gofa zone is declining from time to time due to improper harvesting and post-harvest management practices. Consequently, coffee produced under home garden is recognized as forest coffee at national market. Therefore, this study was conducted during 2012-2013 with the objective of assessing factors affecting coffee quality during and after harvest. Totally, 160 household respondents...

Author(s): Gezahegn Garo, Sabura Shara and Yohanes Mare

June 2016

Use and management of pasture in the cerrado biome: Impacts on aggregation of an oxisol

The objective of this study was to evaluate the physical quality of a dystrophic Oxisol in the Cerrado biome, by means of its aggregation, after 19 years of use and management with pasture. The treatments were soil with natural vegetation (CERR); and soil with Brachiaria decumbens cultivar Basilisk pasture, under the following four types of management: soil with maintenance-level fertilization, every two years, and with...

Author(s): Fabiano Bertolin, José Antonio Maior Bono, Manuel Claudio Motta Macedo, Alexandre Romeiro de Araújo and Francisco de Assis Rolim Pereira

June 2016

Roles of conjugated double bonds in electron-donating capacity of sorghum grains

Sorghum bicolor is cultivated worldwide as a staple food and forage, and is receiving a renewed interest as a bioenergy crop.  The objective of this study was to understand the relationships between the function (redox and metal complexation) and structural properties (aromaticity and ionizable functionalities) of (poly) phenolic pigments in the pericarp of sorghum grain which will ultimately control its...

Author(s): Minori Uchimiya and Ming Li Wang