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: 20 October, 2016; 11(42)

October 2016

A review of geographic information systems and digital imaging in plant pathology application

The increasing rate of disease incidence resulting from devastating effects of plant pathogens, limits crop productivity globally, thus affecting food security. The current global population growth with many mouths to feed is dependent on vibrant agricultural productivity. The effects of globalization, climate change, evolution of pathogens and vectors to mention a few, have combined to increase spread of invasive plant...

Author(s): A. B. Nwauzoma

October 2016

Irrigation productivity and water-use efficiency in papaya crop under semi-arid conditions

Papaya (Carica papaya L.) has a great economic importance in tropical and subtropical countries, Brazil being one of the largest producers of papaya  in the world. This crop requires a considerable amount of water during its cycle, making proper irrigation management essential for optimal water use. Improving water-use efficiency can increase levels of agricultural production as well as the efficient use of water...

Author(s): Erialdo de Oliveira Feitosa, Antonio Flávio Batista Araújo, Calorine Maria Bayma Oliveira, Fernando Bezerra Lopes and Eunice Maia de Andradre

October 2016

Multivariate analysis of the genetic divergence among populations of ornamental pepper (Capsicum annuum L.)

The genus Capsicum presents a wide genetic variability. The most common way to determine this variability has been based upon morphological descriptors. We studied the genetic divergence among populations of ornamental pepper (Capsicum annuum L.) using two different multivariate techniques: Cluster analysis and canonical discriminant variables. The analyses enabled us to determine the morphological descriptors that...

Author(s): Júlio Carlos Polimeni de Mesquita, Elizanilda Ramalho do Rêgo, Anderson Rodrigo da Silva, João José da Silva Neto, Lucas Chaves Cavalcante and Maílson Monteiro do Rêgo

October 2016

Operating and energetic performance of the assembly tractor-scarifier in different liquid ballasting and working depths

The working depth and ballasting are factors that can influence directly the operational and energy performance of a mechanized set. The objective of this study was to evaluate the operational and energetic performance of the set tractor-scarifier, working at three depths under two ballasting conditions. The study was conducted in the experimental area of ​​mechanization of the Department of Agricultural Engineering...

Author(s): Paulo Ricardo Alves dos Santos, Clice de Araújo Mendonça, Mara Alice Maciel dos Santos, Francisca Edcarla de Araújo Nicolau, Marcelo Queiroz Amorim, Maria Albertina Monteiro dos Reis, Carlos Alessandro Chioderoli and Danilo Roberto Loureiro

October 2016

Exploitation of variability for salinity tolerance in maize hybrids (Zea mays L.) at early growth stage

Salinity is extremely serious problem that has a drastic effect on maize crop, environment and causes economic losses of country. An advance technique to overcome salinity is to develop salt tolerant genotypes which require screening of huge germplasm to start a breeding program. Therefore, present study was undertaken to screen out 25 maize hybrids of different origin for salinity tolerance at seedling stage under...

Author(s): Abdul Qayyum, Hafiz Muhammad Saeed, Mamoona Hanif, Etrat Noor, Waqas Malik, Shoaib Liaqat, Kanwal Hanif and Naveed Murtaza

October 2016

Consequence of different ripeners on germination and initial growth of morning glory

At the application time of sugarcane ripeners, most times, morning glory plants, that have escaped, survived or emerged, are entwined on sugarcane stalks and these plants are at this time in different reproductive stages (and it becomes more difficult to control) causing a mechanical and crop yield damage. The main aim of this research was to evaluate sugarcane crop ripeners effect on the seeds germination, seedling...

Author(s): Anne Elise Cesarin, Willians César Carrega, Pedro Figueiredo Rocha Barbosa Martins, Cárita Liberato do Amaral, Mariluce Pascoina Nepumuceno and Pedro Luis da Costa Aguiar Alves

October 2016

Phenotypic variability in Nigerian castor (Ricinus communis L.) accessions

Ten accessions of Ricinus communis L. were grown in derived savannah agro-ecological zone for two cropping seasons under rain fed conditions. The work aimed at phenotypic characterization of R. communis for different qualitative and quantitative traits. The field characterization of the genotypes was done using randomized complete block design with three replications at the new site of Botanical garden, University of...

Author(s): Udoh, Obiora E. and Abu, Ngozi E.

October 2016

Treatment of bean seeds with plant extracts for controlling Zabrotes subfasciatus and its effects on physical and physiological quality during storage

Bean crop occupies a prominent place in medium and large farming units in Brazil. Most of the time, the success of this crop depends, among other factors, on the use of good quality seeds at sowing; which requires strict quality control, harvesting, and storage. The objective of this study is to evaluate the effect of leaves and shells extracts of Aspidosperma pyrifolium Mart., Anadenanthera colubrina and myrtle...

Author(s): Elvira B. Pessoa, Francisco de Assis C. Almeida, Acácio F. Neto and Jucilayne F. Vieira

October 2016

Bioherbicide based on Diaporthe sp. secondary metabolites in the control of three tough weeds

Brazilian growers are facing difficulties to manage the weeds Lolium multiflorum, Conyza sp. and Echinochloa sp. using commercially available agrochemicals in most crops. This study aims to evaluate the use of a bioherbicide based on fermented broth containing secondary metabolites of Diaporthe sp. to control L. multiflorum, Conyza sp. and Echinochloa sp. The bioherbicide activity in pre-emergence and post-emergence of...

Author(s): Maiquel P. Pes, Marcio A. Mazutti, Thiago C. Almeida, Luis E. Curioletti, Adriano A. Melo, Jerson V. C. Guedes and Raquel C. Kuhn

October 2016

Growth and production of a Japanese cucumber crop under pulse irrigation

Water is the most important production factor in agriculture, since even small restrictions to the water supply can result in decreased productivity. Due to climatic reasons, water supply is limited in many parts of the world, resulting in a need to develop techniques that increase the water use efficiency. Pulse irrigation consists of the application of an irrigation depth, relative to the actual irrigation needed,...

Author(s): André Maller, Roberto Rezende, Paulo S. L. Freitas, Cassio C. Seron, Fernando A. Silva Santos and Jhonatan M. Oliveira

October 2016

Characterization of ‘Cabernet Sauvignon’ wine made with grapes from Campanha– RS Region

Campanha region in the state of Rio Grande do Sul (RS) has received attention on grape production specifically ‘Cabernet Sauvignon’, ‘Merlot’ and ‘Tannat’. Due to the edafoclimatic peculiarities such as sandy soil, good thermal amplitude and sunshine, and low rainfall during the ripening period, it is supposed that the wine of this micro-region, in especially Bagé, might have...

Author(s): Renata Gimenez Sampaio Zocche, Suziane Antes Jacobs, Velci Queiróz de Souza, Maicon Nardino, Ivan Ricardo Carvalho, César Valmor Rombaldi, José Carlos Fachinello and Luíz Antenor Rizzon