African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 6863

Table of Content: 21 July, 2016; 11(29)

July 2016

Growth, yield and content of trace elements in coffee fruits grown in soils under successive application of sewage sludge

Brazil seeks to optimize the use of fertilizers by taking advantage of agricultural residues. The sewage sludge is used as organic matter in various crops such as coffee. However, an experiment in lysimeter was performed seeking to assess the growth, yield and content of zinc, copper, nickel, cadmium, lead and chromium in coffee fruits grown on Dystrophic Red Yellow Latosol (dRYL), Dystropherric Red Latosol (dRL) and...

Author(s): Alisson Lucrecio da Costa, Gabriela Lúcia Pinheiro, Flávia Villela Soares, Carlos Alberto Silva and José Maria de Lima

July 2016

Hydro-physical properties and organic carbon of a yellow oxysol under different uses

Intensive soil use without a management plan based on its structures and limitations is the main cause of soil erosion and degradation. The physical properties changes of a studied agricultural area are evaluated by comparing with an area that did not suffer any modification caused by human activities, which is considered the ideal soil condition. This research evaluated the alterations in the hydro-physical properties...

Author(s): Welldy Gonçalves Teixeira, Isabel Dayane de Sousa Queiroz, Risely Ferraz Almeida, Fernanda Pereira Martins, Joseph Elias Rodrigues Mikhael and Elias Nascentes Borges

July 2016

Association of weather variables with yield and yield components of cotton (Gossypium hirsutun L.) at reproductive phenophase

Growth and development of cotton is influenced by several environmental factors such as fertility and biology of soil, change in temperature, amount and distribution of rainfall and carbon dioxide concentration which are attributes of climate change. A field experiment was conducted to study the contribution of weather variables for the total variation in yield and yield components during reproductive phenophase of...

Author(s): Zenebe Mekonnen Adare, A. Srinivas, V. Praveen Rao, T. Ram Prakash and T. Ramesh Thatikunta

July 2016

Genetic divergence of colored cotton based on inter-simple sequence repeat (ISSR) markers

The management of colored cotton is an agricultural activity widely adopted by farmers located at Brazilian semiarid region. The fiber colors currently available are still limited to green and shades of brown, however, there is possibility to broaden the variability for this trait by using accessions from Gossypium Brazilian bank in breeding programs. Therefore, it is necessary to know the genetic diversity of available...

Author(s): Geisenilma Maria Gonçalves da Rocha, José Jaime Vasconcelos Cavalcanti, Luiz Paulo de Carvalho, Roseane Cavalcanti dos Santos and Liziane Maria de Lima

July 2016

Nutrient intake, nitrogen balance and growth performance in buffalo calves fed citrus pulp as a concentrate source

The study was planned to investigate the effects of dried citrus pulp on nutrient intake, digestibility, nitrogen balance, blood metabolites, growth performance and economics in Nilli Ravi buffalo calves. Twenty buffalo male calves of 18 to 24 months of age having 200 to 250 kg body weight were used in a randomized complete block design. Four iso-caloric and iso-nitrogenous diets containing 5, 10, 15 and 20% dried...

Author(s): Muhammad Zeeshan Javed, Muhammad Sharif, Shoukat Ali Bhatti, Muhammad Qamar Bilal, Fayyaz Ahmed, Fawwad Ahmad, Muhammad Saif-ur-Rehman and Muhammad Tariq

July 2016

Motivational factors involved in development of dairy-based innovations

Agricultural innovations are crucial for attainment of food security and poverty reduction; this fact is universally accepted. Farmers are not only recipients of introduced scientific technologies. It is a well known fact that agricultural innovations can emerge from multiple sources including farmers; in fact, farmers have been innovating long before the emergence of formal research and development. These innovations...

Author(s): Ram Datt, Sujeet K. Jha and Ata-Ul-Munim Tak

July 2016

Spatial variability of weeds in an Oxisol under no-tillage system

In the global agribusiness, the herbicide use is a major problem for sustainable production, in this sense, it is necessary to better understand the interaction of weed species and floristic composition such as biodiversity indicators. The objective of this study was to analyze the spatial variability of weeds in an Oxisol under no-tillage system. Samples were taken in an area of 0.5 ha, in 50 sampling points with...

Author(s): Glécio Machado Siqueira, Raimunda Alves Silva, Alana das Chagas Ferreira Aguiar, Mayanna Karlla Lima Costa, Ênio Farias França e Silva

July 2016

Effects of hormone balance on Korean Hackberry seed germination

Korean Hackberry (Celtis koraiensis Nakai), an ornamental, deciduous tree, lacks species resources, and low germination percentage also prevent the exploitation. Thus it becomes necessary to investage the mechanism of seed dormancy. This research explored the effect of plant hormone and seed coat (endocarp and testa) on seed germination. Endogenous hormone concentration, protein content, total soluble sugars, total...

Author(s): Yu Yang Liu and De Kui Zang

July 2016

Changes in soil organic carbon fractions in response to sugarcane planting in the central-south region of Brazil

Sugarcane planting area in Brazil has considerably increased during recent years by occupying areas used for pasture and grain crops production. Land use change (LUC) processes related to sugarcane expansion can affect the soil organic carbon (SOC) stocks, and the quality of the soil organic matter. Preliminary studies have shown that the land-use transition into sugarcane leadto a decrease in the SOC, however no...

Author(s): A. M. Silva-Olaya, C. E. P. Cerri, and C. C. Cerri

July 2016

Wheat stem rust disease incidence and severity associated with farming practices in the Central Rift Valley of Kenya

Stem rust (Puccinia graminis f.sp.tritici) is a major disease of wheat that occurs more in the main wheat growing regions of Kenya. The objective of this study was to assess the incidence and severity of wheat stem rust during the 2015 growing season. A survey was conducted in Mau-Narok, Njoro and Kabatini regions. During the survey work, 149 small scale wheat growers’ fields were assessed. The results revealed...

Author(s): Beatrice Nafula Tenge, Pascal Peter Okwiri Ojwang, Daniel Otaye and Maurice Edwards Oyoo

July 2016

Companion plants associated with kale increase the abundance and species richness of the natural-enemies of Lipaphis erysimi (Kaltenbach) (Hemiptera: Aphididae)

The effects of intercropping of Brassicaceae with coriander (Coriandrum sativum), dill (Anethum graveolens), African marigold (Tagetes erecta) and calendula (Calendula officinalis) on the abundance, species richness and diversity of predators and parasitoids of Lipaphis erysimi have been assessed. The numbers of aphids, parasitized aphids and natural enemies were determined during two consecutive phases. The first...

Author(s): Valkíria Fabiana da Silva, Luís Cláudio Paterno Silveira, Alexandre dos Santos, Adriano Jorge Nunes dos Santos and Vitor Barrile Tomazella

July 2016

Participatory evaluation cum demonstration of improved faba bean cultivars with inorganic and bio- fertilizers in West Gojam Zone, Amhara Region, Ethiopia

The trail was conducted in Yilemana Densa district of the Amhara Region in 2013 with the objectives to evaluate the performance of improved faba bean cultivars with P-fertilizer and bio fertilizer under on-farm conditions, while demonstrating such a technology package to farmers thereby paving the way for wider adoption. The trial consisted of four treatments (two improved cultivars with and without fertilizers) was...

Author(s): Daniel Tilahun, Yihenew Awoke and Anteneh Abewa

July 2016

Evaluation of DSSAT model for sprinkler irrigated potato: A case study of Northeast Algeria

This study was conducted in order to evaluate the performance of potato crop in two major irrigation schemes situated in the Northeast of Algeria. This area is characterized by alluvial soil texture, very fine clay, a very flat topography, and a typical Mediterranean climate. This was done to guide farmers on any changes to their crop management to improve the yields of potato crops. The model SUBSTOR-potato (Decision...

Author(s): Rabia Malkia, Tarik Hartani and Farida Dechmi

July 2016

Agroindustrial yield of sugarcane grown under different levels of water replacement and nitrogen fertilization

The sugar and alcohol sector has invested heavily in technologies to increase the productivity of sugarcane and consequently the gross income of sugar and alcohol; among these practices irrigation and fertilization stands out. The objective of this study is to evaluate the agro industrial and sugarcane yield (plant cane and first ratoon cycle) grown in the Sudoeste Goiano, Brazil, as affected by water replacement and...

Author(s): Alefe Viana Souza Bastos, Murilo Vieira da Silva, Edson Cabral da Silva, Marconi Batista Teixeira Takashi Muraoka, Frederico Antônio Loureiro Soares and Rubens Duarte Coelho

July 2016

Screening of some rice varieties and landraces cultivated in Nigeria for drought tolerance based on phenotypic traits and their association with SSR polymorphism

Breeding for drought tolerance based on direct selection for high grain yield under drought has been hindered by the complex nature of drought tolerance mechanisms and the approaches used. Molecular marker-based approaches are a promising alternative. In this study, 30 rice (Oryza sativa L.) accessions cultivated in Nigeria were screened in a greenhouse for drought tolerance based on morpho-physiological traits and...

Author(s): Celestine Azubuike Afiukwa, Julius Olaoye Faluyi, Christopher John Atkinson, Benjamin Ewa Ubi, David Okechukwu Igwe and Richard Olutayo Akinwale

July 2016

Chemical properties of soils in agroforestry homegardens and other land use systems in Eastern Amazon, Brazil

Homegardens are considered as an alternative to preserve and/or restore the fertility and productivity of degraded soils. The assessment of changes in soil chemical properties resulting from land use and management is important to understand these changes and allow a rational intervention to ensure production on a sustainable basis. Thus, the aim of this study was to evaluate the soil chemical properties of homegardens...

Author(s): Thiago Almeida Vieira, Leonilde dos Santos Rosa, Maria Marly de Lourdes Silva Santos, Clodoaldo Alcino Andrade dos Santos, Denise Castro Lustosa and Alan Péricles Amaral dos Santos