African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 6842

AJAR Articles

Wheat blast research: Status and imperatives

February 2017

Wheat blast is relatively a new disease of wheat that first appeared in Brazil in 1985. It did spread to some other neighbouring countries in the following years and owing to its predisposing factors, was feared to be capable of moving across continental boundaries. The disease has now been reported from Bangladesh. Wheat blast at best can be described as poorly understood as both pathogen and its pathogenicity as well...

Author(s): Rajiv Sharma

Rooting inducers and organic substrates in the propagation of 'Paluma' guava by cutting

February 2017

To produce seedlings with quality is one of the factors that mostly contribute to increase the production chain of a fruit crop. The use of organic substrates in the production of seedlings becomes a way to reduce costs by using raw material available regionally. Then, the aim of this study was to evaluate the influence of rooting inducers and the contribution of organic substrates to improve the rooting of herbaceous...

Author(s): Jussara Cristina Firmino da Costa, Rejane Maria Nunes Mendonça, Leandro Firmino Fernandes, Gerciane Cabral da Silva, Silvanda de Melo Silva, Walter Esfrain Pereira, Lourival Ferreira Cavalcanti and Lucimara Ferreira de Figueiredo

Spatial patterns of soil attributes in a fluvent in the semiarid region, Brazil

February 2017

Spatial variability studies on soil attributes are fundamental for adoption of best agricultural practices concerned with irrigated agricultural sustainability. This study aims to infer the spatial variability patterns of soil moisture, soils salinity and soil texture in an irrigated area of Pernambuco State (Brazil) under cultivation of carrot (Daucus Carota L.), during the dry period of 2012. The area is a typical...

Author(s): Carolyne Wanessa Lins de Andrade, Abelardo Antônio de Assunção Montenegro, Suzana, Maria Gico Lima Montenegro, Jucicléia Soares da Silva and Uilka Elisa Tavares

Physiological and agronomic characteristics of cassava genotypes

February 2017

This experiment was conducted with the objective of evaluating physiological and agronomic characteristics of cassava genotypes in the municipality of Cândido Sales, State of Bahia, Brazil, between October 2010 and August 2012. Complete randomized block design was used, with three replications and 28 treatments formed by genotypes Amansa Burro, Aramaris, Bom Jardim, Bromadeira, Caipira, Caitité, Caravela,...

Author(s): Douglas Gonçalves Guimarães, Caio Jander Nogueira Prates, Anselmo Eloy Silveira Viana, Adriana Dias Cardoso, Vanderlei da Silva Santos, Sylvana Naomi Matsumoto, Quelmo Silva de Novaes, Nelson dos Santos Cardoso Júnior and Sandro Correia Lopes

Effect of seed desiccation and sucrose concentration on the in vitro establishment of mangabeira (Hancornia speciosa Gomes var. gardneri) seedlings

February 2017

Mangabeira (Hancornia speciosa Gomes var. gardneri) is one of the most important fruit trees in the cerrado biome, its fruits being highly valued both for in natura consumption and for processing. Although its seeds are delicate, losing viability within a few hours after collection, seeds still represent the predominant tool of propagation multiplication of this species, since the plant encounters limitations in the...

Author(s): Marcos Paulo dos Santos, Renata Alves de Aguiar, Daniel Cardoso Brandão, Larissa Leandro Pires, Yuri de Oliveira Castro, Fabiano Guimarães Silva, Luciene Machado da Silva Neri, Débora Regina Marques Pereira, João Rodrigo de Castro and  Alexsander Seleguini

Adaptability and stability of wheat cultivars sown on different dates in West Paraná

February 2017

This study aimed to assess adaptability and stability of different wheat cultivars on different sowing dates in western region of Paraná, Brazil. The assay was composed by following wheat cultivars: CD 154, CD 1252, CD 108, CD 151, CD 1550, CD 104, CD 1440, CD 116, CD 150, and CD 1104, which were sown on three different dates: April 29th 2014, May 20th 2014, and June 26th 2014. The methods used to determine...

Author(s): Rafel Massahiro Yassue, Hugo Franciscon, Claudio Yuji Tsutsumi, Vanessa Aline Egewarth, Jonas Francisco Egewarth, Diandra Achre, Silvio Douglas Ferreira, Renan Silva Souza, Lorena Maia Noreto, Jeferson Piano and Paulino Ricardo Ribeiro Santos

Radiological hazard of coffee to humans: a comparative study of Arabian and Turkish coffees

February 2017

Thirty-nine Arabian and Turkish coffee powder samples purchased from various markets in Saudi Arabia were analyzed by High Pure Germanium (HPGe) gamma spectrometry to determine the activity concentrations of the natural and artificial radionuclides 238U, 226Ra, 232Th, 137Cs, and 40K. All samples, (except for two samples of Turkish coffee) were found to contain a high mean content of 40K, ranging from 839.83 to 1197.11...

Author(s): W. R. Alharbi and Zain M. Alamoudi

Peat influence on Zn tolerance, bioconcentration and bioaccumulation in Eucalyptus grandis Hill ex Maiden

February 2017

Soil contamination with zinc occurs in mining and agricultural areas through successive applications of pig slurry. Essential to the selection and adaptation of plants to contaminated soil, is the study of species showing not only tolerance but also bioaccumulation or bioconcentration of zinc associated with amelioration. In this context, this study aimed to evaluate the influence of peat addition on the tolerance,...

Author(s): Rodrigo Ferreira da Silva, Rudinei De Marco, Alex Negrini, Claudir José Basso, Vanderlei Rodrigues da Silva, Alexandre Swarowsky, Douglas Leandro Scheid , Marcia Matsuoka, Clóvis Orlando Da Ros and Paola Daiane Welter

Performance of an improved manual cassava harvesting tool as influenced by planting position and cassava variety

February 2017

Cassava has become an important food security crop in Ghana over the years and in most parts of sub-Saharan Africa; making it the single most important source of dietary energy. Harvesting, one of the serious bottlenecks in the cassava production value chain, has received little attention in terms of mechanisation. Earlier attempts at mechanising cassava harvesting have been challenged mainly by inappropriate method of...

Author(s): Shadrack Kwadwo Amponsah, Joseph Nketiah Berchie, Joseph Manu-Aduening, Eric Owusu Danquah, Jonas Osei Adu, Adelaide Agyeman and Enoch Bessah

Productivity, nutritional quality and phenotypical stability of varieties of silage sorghum in Uberlândia, MG

February 2017

Sorghum (Sorghum bicolor (L.) Moench) is a good alternative for silage, especially in places with water scarcity and high temperatures, due to their morphological and physiological characteristics. Proper management contributes both to productivity and to the quality of forage. The present study was conducted with the following objectives: To evaluate the agronomic and bromatological performance of varieties of sorghum...

Author(s): Alyne Dantas Mendes de Paula, Evandro Fernandes de Abreu, César Henrique Souza Zandonadi, Fernanda Heloísa Litz and Carlos Juliano Brant Albuquerque

Abundance and distribution of Ixodid tick species infesting cattle reared under traditional farming systems in Tanzania

January 2017

Ticks and tick-borne diseases are serious constraints to livestock production in Tanzania and other sub-Saharan African countries. Despite this, knowledge on the abundance of tick species infesting cattle in most parts of Tanzania is insufficient or lacking. This study was conducted to identify species and establish the abundance of ticks infesting cattle in Mara, Singida and Mbeya regions of Tanzania. The ticks were...

Author(s): Isack Ibrahim Kerario, Walter Muleya, Sebastian Chenyambuga, Marja Koski, Seong-Gu Hwang and Martin Simuunza

Quality of seeds from Leucaena species stored under ambient conditions

January 2017

The objective of this research was to know the performance of the seeds from different species of the Leucaena genus (Leucaena leucocephala, Leucaena lanceolata, Leucaena diversifolia, Leucaena macrophylla and Leucaena esculenta), stored under ambient conditions and subject to an evaluation of their physical, physiological and sanitary quality. The material came from the harvests of the collection planted at the...

Author(s): Hilda B. Wencomo, R. Ortíz and J. Cáceres

Physiological aspects in cotton cultivars in response to application leaf gibberellic acid

January 2017

The cotton plant is a species of the Malvaceae family and is relevant to the Brazilian and world economy, mainly because of the textile fiber. However, there was an increase in cotton production because it is necessary for the use of inputs or stimulants, such as the use of gibberellic acid, which has contributed in improving the physiological processes of plants. The study aimed to evaluate the effects of gibberellic...

Author(s): Jussara Cristina Firmino da Costa, Demetrius José da Silva, Antônio Gustavo de Luna Souto, Valdinei Sofiatti, Luciana Domiciano Silva Rosado, Antonio João de Lima Neto and Carlos Eduardo Magalhães dos Santos

Stalk productivity and quality of three sugarcane varieties at the beginning, in the middle, and at the end of the harvest

January 2017

This paper evaluated the stalk productivity and quality of the RB961552 and RB98710 sugarcane varieties, compared with RB92579, during the cane-plant and regrowth cycles. The study was conducted in a random block experimental design with five repetitions. The plots composed of 7 furrows measuring 8 m in length with 1.0 m spacing. Juice quality from the lower, middle, and upper thirds of the industrialized stalks was...

Author(s): Daniele Costa de Oliveira, Mauro Wagner de Oliveira, Manoel Gomes Pereira, Tâmara Cláudia de Araújo Gomes, Vinicius Santos Gomes da Silva and Terezinha  Bezerra Albino Oliveira

Sanitary analysis, transmissibility and pathogenicity of fungi associated with cashew nuts

January 2017

There are few reports of transmission of fungus associated with cashew nuts (Anacardium occidentale L.) in Brazil and worldwide. Thus, the aim of this study was to evaluate the incidence and severity of anthracnose on leaves and fruits (nuts) of cashew, nuts sanitary analysis, nuts-seedling transmission and pathogenicity of fungi associated with cashew nuts. To this end, leaves and nuts of cashew collected in the cities...

Author(s): Jaíza Francisca Ribeiro Chagas, Solange Aparecida Ságio, Evelynne Urzêdo Leão, Aloísio Freitas Chagas Júnior, Marcos Vinicius Giongo, Raimundo Wagner de Sousa Aguiar, Rodrigo Ribeiro Fidelis and Gil Rodrigues dos Santos

Determination of heavy metals in the roasted and ground coffee beans and brew

January 2017

Some compounds present in coffee beans can affect consumer health. The present study determines the content of heavy metal in coffee cultivated in the Cerrado Mineiro region (Alto Paranaíba – MG, Brazil), to compare the values found with the legal standards and check how these metals are extracted from the respective infusions. Fifty samples of coffee beans were analyzed, taken from the Alto...

Author(s): Sabrina Alves da Silva, Fabrícia Queiroz Mendes, Marcelo Rodrigues Reis, Flávia Regina Passos, André Mundstock Xavier de Carvalho, Kátia Rodrigues de Oliveira Rocha and Frederico Garcia Pinto

Spatial variability of soil physical and chemical aspects in a Brazil nut tree stand in the Brazilian Amazon

January 2017

The Brazil nut is considered one of the noblest trees of the Amazon biome and contains social, ecologic and economic importance to this region. The study of the spatial variance of the edaphic properties in native nut trees can direct future researches about more efficient samplings. The Geostatistics is the methodology utilized for this type of study, once that it considers the structural and random characteristics of...

Author(s): Quêzia Leandro de Moura Guerreiro, Raimundo Cosme de Oliveira Júnior, Gérson Rodrigues dos Santos, Maria de Lourdes Pinheiro Ruivo, Troy Patrick Beldini, Eduardo Jorge Maklouf Carvalho, Katia Emidio da Silva, Marcelino Carneiro Guedes and Paulo Roberto Brasil Santos

Phytosociology and weed interference in okra under organic cropping system

January 2017

A research was carried out to study phytosociology and to determine the periods of weed interference in the okra crop in organic cropping system. The experiment was laid out in a randomized complete block design with 20 treatments and four replications. The treatments were 10 periods of weed coexistence with the crop during 0-7, 0-14, 0-21, 0-28, 0-35, 0-42, 0-49, 0-56, 0-63 and 0-74 days after crop emergence (DAE) and...

Author(s): Raimundo Nonato Viana Santos, Antonia Alice Costa Rodrigues, Maria Rosangela Malheiros Silva, Maria José Pinheiro Correa and Mario Luiz Ribeiro Mesquita

Anti-atherogenic properties associated with the antioxidant activity from the hydrophilic extracts of Halimeda incrassata (Chlorophyta, Bryopsidales)

January 2017

Seaweeds are a source of natural antioxidants having potential application in oxidative stress and associated diseases. In this work, anti-atherogenic properties associated with the antioxidant activity from the hydrophilic extracts of Halimeda incrassata were studied. The phenolic content assessed in the aqueous extract and fraction phenolic acids (FPA) was 0.13 ± 0.05 and 0.47 ± 0.09 mg of gallic acid...

Author(s): Alexis Vidal-Novoa, Ariadna Costa-Mugica, Yenisleidy Zulueta-Díaz, Daylín Diaz-Gutierrez, Ana Mara de Oliveira e Silva, Ana María Vazquez, Claudina Zaldívar-Muñoz, Dalva Assunçao Portari de Mancini and Jorge Mancini-Filho

Nitrogen and potassium fertirrigation on yield characteristics of Italian Zucchini in protected cultivation

January 2017

This study aimed to evaluate the effect of different doses of nitrogen and potassium applied through fertirrigation on yield characteristics of Italian Zucchini, Novita Plus cultivar. The experiment was conducted in a greenhouse at the Irrigation Technical Center of the State University of Maringá, Maringá - PR, adopting a completely randomized design in a 4 x 4 factorial scheme, with three replications....

Author(s): André Felipe Barion Alves Andrean, Cláudia Lozano Salim, Tiago Luan Hachmann, Roberto Rezende and André Ribeiro Da Costa 

Controlled water stress in uniformity of maturity and productivity of conilon coffee

January 2017

The aim of this work was to evaluate the uniformity of fruit maturity and the productivity of conilon coffee in function of different periods of water stress in the post-harvest period. The study was conducted in a field from August 2014 to July 2015 in an old coffee crop of conilon coffee, cultivar Vitória 'Incaper 8142', cultivated at a spacing of 3.0 × 1.2 m, located at the Federal Institute of...

Author(s): Jorge Montoanelli Correa⊃, Gustavo Haddad Souza Vieira⊃, Diego Corona Baitelle⊃, Jéssica Broseghini Loss⊃, Paola Alfonsa Vieira Lo Monaco⊃, Ismail Ramalho Haddade⊃, Caroline Merlo Meneghelli⊃, Vítor Vargas Schwan, Renan Birchler and Fernando Zanotti Madalon⊃

Incidence of viruses and virus-like diseases of watermelons and pumpkins in Uganda, a hitherto none-investigated pathosystem

January 2017

Common impromptu observations between 2010 and 2012 of apparent virus-like disease symptoms in watermelons and pumpkins in Uganda prompted this study. However, there was no recorded evidence of virus infection in these crops anywhere in Uganda or eastern Africa as a region. Thus, 374 and 522 watermelon and pumpkin plants, respectively, growing in 13 fields were surveyed to record virus-like disease symptoms in...

Author(s): Fred B. Masika#, Ronald Kisekka, Titus Alicai and Arthur K. Tugume#

Determinants of the Brazilian Amazon deforestation

January 2017

The Amazon rainforest is the world’s largest biome, containing almost 50% of the planet’s known biodiversity and is the biggest source of fresh water, which is approximately one-fifth of the global reserves. However, the sustainable use of this ecosystem is threatened by several factors, and deforestation is the main problem. This study addresses the deforestation of the Brazilian Amazon forest, in...

Author(s): Pedro Guilherme de Andrade Vasconcelos, Humberto Angelo, Alexandre Nascimento de Almeida, Eraldo Aparecido Trondoli Matricardi, Eder Pereira Miguel, Álvaro Nogueira de Souza, Maristela Franchetti de Paula, Joaquim Carlos Goncalez and Maísa Santos Joaquim

Study on termite damage to different species of tree seedlings in the Central Rift Valley of Ethiopia

January 2017

A high density of termite mounds is common in the Maki-Batu area of the Central Rift Valley of Ethiopia. To determine whether farmers consider termites as one of their problems in growing trees and practices they use to manage termites, short semi-structured questionnaires were distributed to farmers selected randomly. To evaluate the efficacy of some non-chemical control methods, Eucalyptus camaldulensis seedlings of...

Author(s): Daniel Getahun Debelo and Emana Getu Degaga

Standardizing germination tests for quinoa seeds

January 2017

The standard germination tests have been commonly used on commercial grain crops, such as soybean, field beans, rice and maize. However, there are no standard tests for potential new crops; quinoa being one of them. This work is aimed at evaluating the effect of substrate, temperature and counting time in seed germination of quinoa. The following treatments were used in tests with seeds: on blotter paper, between...

Author(s): Flívia Fernandes de Jesus Souza, Julia Emanuela Almeida de Souza, Nara Oliveira Silva Souza, Carlos Roberto Spehar and Thais Fernandes de Jesus

Improving the competitiveness of dairy production via value chain approach: The case of Lemu-Bilbilo district in Arsi highlands of Ethiopia

January 2017

This study was initiated with the purpose to assess the dairy value chain in Lemu-Bilbilo district of Arsi zone, Ethiopia. This study made use of both qualitative and quantitative data collected from primary and secondary sources. Different Participatory Rural Appraisal (PRA) techniques were utilized to collect primary data in July 2012. The dairy value chain in Lemu-Bilbilo district involves six distinct value adding...

Author(s): Mesay Yami, Bedada Begna and Getachew Legese

Analysis of colourfastness of fabrics treated with dyes extracted from Roselle calyces

January 2017

The dyeing potential of roselle (Hibiscus sabdarifa) extract variously extracted by boiling, steeping and ethanol solvent were evaluated with three dye fixatives (potassium aluminum sulphate (alum), tannic acid, and citric acid), to study their effects on cotton (100%), stone silk (60% silk:40% polyester) and polyester (100%) fabrics. Colourfastness to sunlight, washing, perspiration (acid and alkali) and rubbing...

Author(s): Ozougwu Stella U. and Anyakoha U.

Mathematical models to estimate leaf area of citrus genotypes

January 2017

Mathematical models were developed, using 22 different genotypes of citrus, to estimate leaf area. The information of the relationship between leaf length and width (L/W)2 for simple leaf blade form (eliptic, ovate, obovate, lanceolate); and length of the three folioles (L2+L3)/L1 for a compound leaf (trifoliate leaves), was used with the purpose to separate group of similarities of leaf blade form and promote...

Author(s): Alexandre Dias Dutra, Maurício Antonio Coelho Filho, Amábili Gunes Viana Pissinato, Abelmon da Silva Gesteira, Walter dos Santos Soares Filho and Marilene Fancelli

Variation of leaf area index of the forage sorghum under different irrigation depths in dynamic of cuts

January 2017

The determination of leaf area index is a variable of great importance for predicting productivity, especially when it comes to forage species where the desired product is the leaves. This study aimed to determine the variation of the leaf area index of forage sorghum when subjected to different irrigation depths in four culture cuts. Treatments consisted of six irrigation depths, these being 0, 60, 80, 100, 120 and...

Author(s): Jardel Henrique Kirchner, Adroaldo Dias Robaina, Marcia Xavier Peiter, Wellington Mezzomo, Rogério Ricalde Torres, Leonita Beatriz Girardi, Bruna Dalcin Pimenta, Ricardo Benetti Rosso, Anderson Crestani Pereira and Marcos Vinícius Loregian

Mineral and organic fertilizer in two Physalis species

January 2017

Physalis cultivation can be an alternative of extra income for small and medium producers, mainly with the use of materials available on the property that can replace chemical fertilizer. This study aimed to evaluate agronomic parameters of Physalis peruviana and P. pubescens submitted two different sources of fertilization - chemical and organic. We evaluated plant height, shoot dry mass, production/plant, fruits...

Author(s): ARIATI Ana Claudia, OLIVEIRA Marisa de Cacia, LOSS Edenes Maria Schroll, GOMES Izabela, PACHECO Vacilania and NEGRI Rafaele Cristina

Optimal sample size and data arrangement method in estimating correlation matrices with lesser collinearity: A statistical focus in maize breeding

January 2017

Information about data arrangement methodologies and optimal sample size in estimating the Pearson correlation coefficient (r) among maize traits are still limited. Furthermore, some data arrangement methodologies currently used may be increasing multicollinearity in multiple regression analysis. This study aimed to investigate the statistical behavior of the r and the multicollinearity of correlation matrices among...

Author(s): Tiago Olivoto, Maicon Nardino, Ivan Ricardo Carvalho, Diego Nicolau Follmann, Mauricio Ferrari, Alan Junior de Pelegrin, Vinicius Jardel Szareski, Antônio Costa de Oliveira, Braulio Otomar Caron and Velci Queiróz de Souza

The utilization of tropical legumes to provide nitrogen to pastures: A review

January 2017

Sustainable models of animal production constantly seek for ways to pasture production with inputs reduction. In this context, the introduction of forage legumes in the pasture system is fundamental to fix nitrogen from the atmosphere and supply it to grasses, increasing its production and persistence, enhancing animal nutrition as it grazes, at the same time. Still, the use of plant mixes in the system brings further...

Author(s): Flávia Maria de Andrade Gimenes, Henrique Zavarez Barbosa, Luciana Gerdes, Alessandra Aparecida Giacomini, Karina Batista, Waldssimiler Teixeira de Mattos, Linda Mônica Premazzi and Alberto Nagib de Vasconcellos Miguel

Plant secondary metabolites and its dynamical systems of induction in response to environmental factors: A review

January 2017

Under natural conditions, the plants are, usually, surrounded by a series of potential enemies. They had created strategies of defense against pathogens and herbivores' attacks, allowing its perpetuation throughout evolution. These defense mechanisms are closely associated with the synthesis of secondary metabolites, which are also worldwide used in several areas of industry. This bibliographic review was conducted...

Author(s): Tiago Olivoto, Maicon Nardino, Ivan Ricardo Carvalho, Diego Nicolau Follmann, Vinícius Jardel Szareski, Mauricio Ferrari, Alan Junior de Pelegrin and Velci Queiróz de Souza

Growth comparison of 22 genotypes of conilon coffee after regular pruning cycle

January 2017

A regular pruning cycle (RPC) reduces costs when implementing crop treatments and facilitates semi-mechanized harvesting. However, there is information on plant development under this system. Thus, this study aimed to assess the new branch growth of 22 genotypes of Coffea canephora (conilon) after a regular pruning cycle. The assay was conducted at Cachoeiro de Itapemirim, Southern Espírito Santo State, Brazil....

Author(s): José Maria Dalcomo, Henrique Duarte Vieira, Adésio Ferreira and Fábio Luiz Partelli

Growth of Piper nigrum L. and nutrients cycling by intercropping with leguminous species

January 2017

Nitrogen (N) fixation is performed efficiently by leguminous plants, which can then be used as ‘green manure’ to reduce the need for synthetic fertilizer (especially N) and thus sustainably provide satisfactory crop yields with low production costs. The aim of this study was to determine the effect of intercropping with leguminous species used as cover crops on branch growth and nutrient cycling of pepper...

Author(s): Evelyn Trevisan, Fábio Luiz Partelli, Marcos Góes de Oliveira, Fábio Ribeiro Pires and Heder Braun

Nutritional diagnosis of sugarcane varieties in a Yellow Oxisol during three agricultural seasons

January 2017

Leaf analysis is one of the main methods used for the evaluation of nutritional requirements in sugarcane culture, contributing to a better management of fertilizers. This study aimed to evaluate the nutritional status of sugarcane varieties by quantifying the leaf content of macro and micronutrients of the +3 leaf. The varieties RB92579, RB867515, VAT90-212 and SP813250 were evaluated in a Yellow Oxisol at Fazenda...

Author(s): Vinicius Santos Gomes da Silva, Mauro Wagner de Oliveira, Daniele Costa de Oliveira, Terezinha Bezerra Albino Oliveira, Manoel Gomes Pereira and Carlos Henrique de Castro Nogueira

Biological control of the bacterial wilt Ralstonia solanacearum by bioprotector with fungi chitosan from Cunninghamella elegans on tomatoes

January 2017

Fertilization is one of the most important means to improve plant production and nutrient uptake. Tomatoes plants are very exigent on fertilizers and sensitive to diseases. For satisfactory yield and fruit quality soil fertility and diseases need to be controlled. The aim of this paper was to evaluate the effectiveness of a bioprotector that contains fungi chitosan as an alternative biofertilizer, which releases...

Author(s): Wagner Silva Oliveira, Iwanne Lima Coelho, Jéssica Rafaella Sousa Oliveira, Maria Camila Barros Silva Leite, Thatiana Montenegro Stamford Arnaud, Newton Pereira Stamford and Emmanuella Vila Nova Silva

Soybean as bioindicador of residual effect of 2,4-D herbicide in an oxisol from the Brazilian cerrado

January 2017

Invasive plants, besides competing for space, also compete for water, light, and nutrients against the crop, what may cause drastic production cuts. Chemical control through herbicides is the most widely used method to control these plants. This study aimed to evaluate the persistence of the 2,4-D (dichlorophenoxyacetic acid) herbicide in soybean (Glycine max L.) crops in an Oxisol from the Brazilian Cerrado. The...

Author(s): Maria Aparecida Peres-Oliveira, Edna Maria Bonfim-Silva, Vinicius Melo da Silva, Tonny José Araújo da Silva and Helon Hébano de Freitas Sousa

Physical and chemical characteristics and drying kinetics of turmeric (Curcuma longa L.)

January 2017

This study aimed to characterize the physical and chemical composition, antioxidant activity, essential oil yield, drying kinetics and fit to mathematical models, color parameters, particle size and scanning electron microscopy of fresh turmeric rhizomes (Curcuma longa L.). The physical and chemical composition of turmeric showed technological interest, with standards consistent with those reported in the literature....

Author(s): Maria Siqueira De Lima, Marco Antônio Pereira Da Silva, Geovana Rocha Plácido, Caroline Cagnin, Núbia Ferreira Vieira, Ruthele Moraes Do Carmo, Rânio Cesar Francisco Da Silva, Carlos Frederico De Souza Castro, Márcio Caliari and Richard Marins Silva

Effect of organo-mineral fertilizer and poultry litter waste on sugarcane yield and some plant and soil chemical properties

January 2017

Application of organic wastes in sugarcane (Saccharum officinarum) is an alternative possibly replacing or supplementing mineral fertilizers. This study aimed to evaluate the effects of poultry litter, organo-mineral fertilizer and mineral fertilizer on soil chemical properties, yield and plant content of macronutrients in sugarcane. The experiment was conducted at the Jalles Machado Mill in Goianésia- GO, from...

Author(s): Lucélia Alves Ramos, Regina Maria Quintão Lana, Gaspar Henrique Korndörfer and Adriane de Andrade Silva

Estimated damage caused by ramularia leaf spots on cotton

January 2017

The objectives of this study are to establish damage functions for the Ramularia areola pathosystem and characterize the damage in cultivars susceptible and resistant to it. The experiment was conducted in the city of Tangará da Serra in the 2012/2013 harvest season. The experimental design was randomized blocks with four replications in a factorial arrangement of four cultivars × four gradients. The plots...

Author(s): Thiago Alexandre Santana Gilio, Dejânia Vieira de Araújo, Kelly Lana Araújo, Thomas Edson Fregonese, Rodrigo Chimenez Franzon and Jaqueline Aguila Pizzato

Effects of associated co-inoculation of Bradyrhizobium japonicum with Azospirillum brasilense on soybean yield and growth

January 2017

The continuous development of soybean cultivars aiming at higher yields can result in a demand of N supply higher than the standard inoculation with Bradyrhizobium species. In this context, Azospirillum species, a nitrogen-fixing microorganism found in the rhizosphere of various plant species, may be studied as a way of providing soybean crop with the part of the N it needs. Employing a completely randomized design with...

Author(s): Glaucia Cristina Ferri, Alessandro Lucca Braccini, Fernanda Brunetta Godinho Anghinoni and Lucas Caiubi Pereira

Relative forage preference by camel (Camelus dromedarius) as influenced by season, sex and age in the Sahel zone of north western Nigeria

January 2017

A study on effect of age, sex and seasonal variation in forage preference of camel was conducted in the Sudano-Sahelian zone of north western Nigeria. A total number of 12 camels were used in the study. Data were collected at an interval of 5 min for each category of animal for 3 consecutive days in dry and rainy seasons using scan sampling method. Based on the observation, the number of plants preferred in this study...

Author(s): Alkali, H. A., Muhammad B. F., Njidda, A. A., Abubakar, M. and Ghude, M. I.

Root-promoting substances enhance Sugarcane's drought tolerance

December 2016

Sugarcane (Saccharum spp) is an expanding culture for the production of bioethanol around the world which requires certain practices to improve its productive performance at the different ecosystems. This work's aim is to evaluate the initial Sugarcane growth and drought tolerance through the application of biostimulants. For this purpose an experiment was conducted in a greenhouse using completely randomized...

Author(s): Lauricio Endres, Humberto Cristiano de Lins Wanderley Filho, Paulo Ricardo Aprígio Clemente, Breno Kennedy Lima Bezerra and Vilma Marques Ferreira

Phenology, yield and fruit quality of four persimmon (Diospyros kaki L.) cultivars in São Paulo’s Midwest countryside, Brazil

December 2016

The aim of this study is to evaluate the phenology, yield and fruit physicochemical characteristics of four persimmon cultivars (Diospyros kaki L.) in São Paulo’s Midwest countryside, Brazil. The persimmon cultivars studied were ‘Pomelo’, ‘Rama Forte’, ‘Fuyu’ and ‘Rubi’. The main phenological phases of persimmons trees were evaluated. Despite significant...

Author(s): Marlon Jocimar Rodrigues da Silva, Tamires Esther Ferreira, Sofia Domiciano, Ana Paula Maia Paiva, Marco Antonio Tecchio and Sarita Leonel

Factors associated with weed occurrence in Southwest region of Goiás

December 2016

After the introduction of Roundup Ready® technology, there were changes in community composition of weeds in the Southwest of Goiás. In this sense, this study aimed at evaluating weed distribution in different cropping systems in this region. Thus, phytosociological survey was conducted in three different periods. Studies were conducted on thirty-five areas derived from combined soybean crops resistant to...

Author(s): Weverton Ferreira Santos, Sérgio de Oliveira Procópio, Alessandro Guerra da Silva and Marcelo Ferreira Fernandes

Characterization of production system and breeding practices of sheep producers in Doyogena district, Southern Ethiopia

December 2016

An exploratory survey was undertaken in Doyogena district of Southern Nation Nationalities Peoples region of Ethiopia to understand the sheep production system, the breeding practices, selection criteria and sheep production constraints in order to develop a sheep breeding strategy. Data were collected from 107 households using semi-structured questionnaire and group discussion. Descriptive statistics and index were...

Author(s): Taye M., Yilma M., Mengistu S., Abiso T., Bassa Z., Wolde S., Rischkowsky B., Dessie T., Okeyo M. and Haile A.

Assessment of fruit postharvest handling practices and losses in Bahir Dar, Ethiopia

December 2016

Demand for fresh fruit is steadily increasing in big cities of Northwestern Ethiopia. As a result, fruits are transported from nearby as well as long distance sources to urban centers such as Bahir Dar. The type of fruit crops available in the market and number of fruit retailers are increasing from time to time. However, the key challenge facing the sector is loss across the supply chain. Therefore, the objectives of...

Author(s): Yigzaw Dessalegn, Habtemariam Assefa, Teshome Derso and Amare Haileslassie

Agronomic performance of hybrids and varieties of maize in function of nitrogen in coverage

December 2016

This study aims to compare the agronomic performance and the productivity of the corn hybrid AG 1051 and the Incaper Capixaba 203 variety in function of different nitrogen (N) doses in coverage. The experiment was held at the Federal Institute of Espírito Santo - Campus Santa Teresa. The design was of randomized blocks and the treatments were arranged in a split plot scheme, with four repetitions. The plots were...

Author(s): Diego Corona Baitelle, Kezia Moraes Vieira, Danilo Força Baroni, Francisco Braz Daleprane, Ismail Ramalho Haddade, Sílvio de Jesus Freitas, Jorge Montoanelli Correa and Flávio Wirlan Andrade da Silva

Soil green manure and physic-hydric attributes under rubber tree plantation in São Paulo’s western plateau, Brazil

December 2016

São Paulo’s western plateau is a privileged region for rubber tree plantation, since it does not present favourable conditions for the development of plant disease. However, the soil in that region is still scarcely studied. This study has the objective of evaluating the effect of management practices applied between the lines of rubber trees (Hevea brasiliensis) in physic-hydric attributes of a red oxisol...

Author(s): Adriana Aparecida Ribon, José Frederico Centurion, Kathleen Lourenço Fernandes, Leonardo Rodrigues Barros, Amanda Romeiro Alves, Clarice Backes, Alessandro José Marques Santos, Eduardo da Costa Severiano, José Milton Alves, Vladia Correchel

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