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: 8 December, 2016; 11(49)

December 2016

24-Epibrassinolid in the biometry of acclimatization to salinity in two cultivars of Vigna unguiculata (L.) Walp.

In order to evaluate the influence of application of brassinosteroid phytohormone in mitigating the effects of salt stress at the height, root growth, leaf area, dry mass of leaf and root, stomatal conductance and transpiration, plants of cowpea bean [Vigna unguiculata (L.)Walp, cultivars BR3 Guariba and BRS Tracuateua, they were sown in a greenhouse in the absence and presence of brassinosteroid (24-epibrassinolid) in...

Author(s): Liliane C. Machado, Jéssica T. da Silva Martins, Susana S. Conceição, Kerolém P. Sousa Cardoso, Thays C. Costa, Glauco A. dos Santos Nogueira, Vitor R. Nascimento, Antonio Vinicius C. Barbosa, Benedito G. dos Santos Filho and Cândido F. de Oliveira Neto

December 2016

Chemical attributes of Oxisol under different tillage systems in Northeast of Pará

The different tillage systems interfere with soil chemical attributes mainly due to the site of preparation techniques. The aim of this study was to determine, in two time evaluation periods, the changes in soil chemical attributes affected by three tillage systems in Yellow Oxissol. The experimental design consists of a randomized block design, with split-plot (Soil Tillage systems X Depths samples) with 3 repetitions...

Author(s): Augusto José Silva Pedroso, Maria de Lourdes Pinheiro Ruivo, Jorge Luiz Piccinin, Ricardo Shigueru Okumura, Sannah Mohamad Birani, Mário Lopes da Silva Júnior, Vânia Silva de Melo, Adriane da Rocha Costa and Marcos Paulo Ferreira de Albuquerque

December 2016

Legumes as green manure for common bean cultivated in two growing seasons at southeast Brazil

The use of legumes in pre-cultivation on the common bean has the possibility of providing atmospheric N to the soil, making it available to this crop, and may cover part of its N demand and increase grain yield. The objective of present study was to evaluate the effect of hyacinth bean and jack bean as green manures on the production of common bean grown in two seasons. Cover crops were evaluated for fixed N2, dry...

Author(s): Filipe Fernandes de Sousa, Davi Lopes do Carmo, José Eustáquio de Souza Carneiro, Segundo Urquiaga and Ricardo Henrique Silva Santos

December 2016

Field evaluation of cowpea varieties for adaptation to the forest/savanna transition agroecology of Osun state, Nigeria

Cowpea (Vigna unguiculata [L.] Walp) is an important food legume in tropical and sub-tropical Africa. It is grown for food, fodder, a cover crop and consumed as dried seeds rich in carbohydrates, proteins and vitamins. Production of cowpea has not been practiced on a large scale in the forest/savanna transition agro ecology of Nigeria due to high relative humidity, diseases and insect damage. In 2012 and 2013 cropping...

Author(s): Titilayo Elizabeth Sangoyomi and Alabi Olufunmilola,

December 2016

Use of cattle waste on the farm

Lack of fertile soil is among the main problems in world agricultural production areas, mainly in vegetable crop production areas. In this sense, we aimed to evaluate the the production of chili (Capsicum annuum L.) using cow urine as an organic fertilizer. The survey was conducted from June to September 2014 at the School State of Primary and Secondary Nossa Senhora da Conceição, Belém de Brejo do...

Author(s): Lunara de Sousa Alves, Mário Leno Martins Véras, José Sebastião de Melo Filho, Nelto Almeida de Sousa, Lucimara Ferreira de Figueiredo, Rosinaldo de Sousa Ferreira, Rayane Amaral Andrade, Leandra de Melo Cavalcante Sousa, Alvaro Carlos Gonçalves Neto and Thiago Jardelino Dias

December 2016

Root spatial distribution in coffee plants of different ages under conservation management system

Root system growth and soil structure are interdependent and the threshold of separation between both of them is complex. However, by the evaluation of soil pore space, it is possible to characterize the root system growth environment. The aim of this study was to evaluate the effect of conservation management system over time on pore distribution and on root system development of coffee plantation in Cerrado Oxisol,...

Author(s): Érika Andressa da Silva, Sérgio Henrique Godinho Silva, Geraldo César de Oliveira and Carla Eloize Carducci

December 2016

Analytical approaches for modeling tree crown volume in black wattle (Acacia mearnsii De Wild.) stands

In this paper, four strategies were proposed for modeling tree crown volume using as independent variable stem variables, crown variables, combination of stem and crown variables, and stem volume. We used a dataset comprised of 170 trees from 12 temporary plots located in forest stands in southern Brazil. Models composed of stem variables presented weaker predictive ability. The best model contained crown variables,...

Author(s): Guilherme C. Cadori, Carlos R. Sanquetta, Sylvio Péllico Netto, Alexandre Behling, Sérgio Costa Júnior and Ana Paula Dalla Corte

December 2016

Prevalence and variability of the common bean rust in Uganda

Uganda is the second largest producer of dry beans (Phaseolus vulgaris L.) in Africa, but common bean rust caused by Uromyces appendiculatus (Pers. Unger), is negatively impacting the production of the crop. There is little information on the occurrence and identity of the rust pathotypes present in the country. Consequently, a field survey was carried out during the 2015 second planting season in fifteen districts,...

Author(s): Blessing Adanta Odogwu, Stanley Tamusange Nkalubo, Clare Mukankusi, Pamela Paparu, Rubaihayo Patrick, James Kelly and James Steadman

December 2016

Chemical and microbiological changes in a sandy soil with pig liquid waste application in Southern Brazil

Liquid residue from pig farming contains nutrients that can be used for the fertilization of cultivated soils. The aim of this study was to evaluate chemical and microbiological changes in a sandy soil under pasture with Bermuda Grass (Cynodon spp) that received doses of pig liquid waste (PLW). The experiment was conducted in Cianorte-PR, Brazil, in a Typic Hapludox soil with sandy texture. The treatments consisted of...

Author(s): Matos Maria Aparecida de, Colozzi Filho Arnaldo, Barbosa Graziela Moraes de Cesare, Caviglione João Henrique, Nogueira Marco Antônio, and Andrade Diva Souza,

December 2016

Effects of the application of treated domestic sewage via surface and subsurface drip irrigation on the solution and chemical properties of the soil in an orange plantation

The use of treated domestic sewage (TDS) in agriculture by drip irrigation in the soil subsurface can serve as an extra treatment and also provide higher availability of water and nutrients to plant roots. It represents safer and healthier cultivation for crops, producers and consumers, and allows the direction of better quality water for domestic consumption. This study aimed to analyze the possible effects of TDS...

Author(s): Reginaldo Ferreira Santos, Andreia Aparecida Ferreira da Silva, Edson Eiji Matsura, Aline Azevedo Nazário and Samuel Nelson Melegari de Souza

December 2016

Induction of coffee wilt disease infection using different types of contaminant in field conditions in Democratic Republic of Congo

A study was conducted on the induction of coffee wilt disease (CWD) infection with different types of contaminants using a randomized complete block design with four replications. Coffee seedlings were inoculated with infected bark, sub-bark tissues, wood necrotic and an artificial inoculum. Statistical analysis did not show significant differences (P>0.05) between treatments. Results obtained show that all...

Author(s): Marcel Muengula-Manyi, Augustin Ngombo-Nzokwani, John Kiamana-Mantata, Patrick Tshilenge-Djim and Adrien Kalonji-Mbuyi,

December 2016

Plant defense elicitors’ purification in soybean and bean from pathogenic nematode

Plant resistance induction against pathogens is an alternative disease control method, which involves the activation of the plant defense mechanisms, such as the phytoalexins induction. The eliciting molecules have the capacity of inducing and activating such responses and thus, techniques have searched to isolate and characterize fractions with eliciting aspect. This study aimed to purify, through ion exchange...

Author(s): Edilaine Della Valentina Gonçalves-Trevisoli, José Renato Stangarlin, Bruna Broti Rissato, Omari Dangelo Forlin Dildey, Sidiane Coltro-Roncato, Laline Broetto, Heloísa Ferro Constâncio Mendonça-Müller, Janaína Dartora, Cristiane Cláudia Meinerz, Luciana Iurkiv, Thaisa Muriel Mioranza, Daliana Hisako Uemura-Lima, Tulya Fernanda Barrientos Webler and Odair José Kuhn

December 2016

Spatial variability of soil physical and hydraulic properties in the southern Brazil small watershed

In order to provide an adequate usage to agricultural soils it is crucial to comprehend the soil physical attributes and their spatial variability. The variability of soil attributes is dependent on several formation processes and interactions. To properly describe such complex variability, the statistical methods used must incorporate the spatial and temporal influences. In this context, the present study was developed...

Author(s): Bartels Guilherme Kruger, Terra Viviane Santos Silva, Cassalho Felício, Lima Luciana Shigihara, Reinert Dalvan José and Collares Gilberto Loguercio

December 2016

Effect of nitrogen and potassium fertilizations on elephant grass genotypes used for energy purposes in Northern Rio de Janeiro State, Brazil

Similar to many other human activities, the energy sector has a global concern with environmental issues. The use of renewable energy sources such as biomass is an alternative to the use of fossil fuels. Eight elephant grass genotypes showing energy production potential were herein assessed. The genotypes were grown from February 2014 to March 2016 in Campos dos Goytacazes County – Rio de Janeiro State, Brazil....

Author(s): Brunno de Oliveira Almeida, Rogério Figueiredo Daher, Antônio Alonso Cecon Novo, Geraldo de Amaral Gravina, Marcelo Vivas, Cássia Roberta de Oliveira Moraes, Bruna Rafaela da Silva Menezes, Eduardo Peres Furlani, Maria do Socorro Bezerra de Araújo and Verônica Brito da Silva