African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 6749

AJAR Articles

Determination of parameters for selection of Eucalyptus clones tolerant to drought

October 2016

Climatic changes have induced the spread of aridity in many parts of the globe. Eucalyptus plantations show wide variations in productivity due to several factors, including climatic changes. Therefore, Eucalyptus genotypes that can adapt to such conditions is very welcome. Thus, an evaluation was done by comparing the physiological responses of two Eucalyptus genotypes, tolerant and drought-sensitive. They were...

Author(s): Inaê Mariê de Araújo Silva, Michael Willian Rocha de Souza, Any Caroliny Pinto Rodrigues, Luiz Paulo de Sousa Correia, Ronnie Von dos Santos Veloso, José Barbosa dos Santos, Miranda Titon, Janaína Fernandes Gonçalves and Marcelo Luiz de Laia

Physical properties of a latosol eutrophic red under management systems after different winter crops successful by the soybean crop

October 2016

The objective was to verify the influence of winter crops under management mechanical (roller knife) and chemical (glyphosate), on soil physical properties and yield of soybeans. The experiment was carried out at the field under randomized block design in tracks scheme. The treatments consisted of four different winter crops (oats IPR 126, wheat BRS Tarumãt crambe FMS Bright and forage radish cultivar common) in...

Author(s): Poliana Ferreira Da Costa, Paulo Sérgio Rabello De Oliveira, Jeferson Tiago Piano, Loreno Egidio Taffarel, Milciades Ariel Melgarejo Arrúa, Marcos Vinícius Mansano Sarto and Shaline Séfara Lopes Fernandes

Forage yield and nutritive value of naturally growing Brachiaria decumbens as undergrowth to an aroeira tree stand in a silvopasture system

October 2016

This study evaluated the forage yield and feed chemical composition of a Brachiaria decumbens natural pasture as undergrowth to a Myracrodruon urundeuva (aroeira) tree stand in a silvopasture system at  UNESP/Ilha Solteira, Selvíria, Mato Grosso do Sul, Brazil. Sampling was conducted in a completely randomized block design with a factorial scheme of two plots and two sub-plots, with plots as the light...

Author(s): Carla Renata Silva Baleroni Guerra, Mario Luiz Teixeira de Moraes, Camila Regina Silva Baleroni Recco, Cristina Lacerda Soares Petrarolha Silva and Flavia Maria de Andrade Gimenes

Effects of drought on yield and yield components of two contrasting growth habits of common beans (Phaseolus vulgaris L.)

October 2016

Common bean is grown by smallholder farmers in Malawi who produce low yield due to drought constrains. Two experiments comprising of two different bean growth habits (IIa and IVa) were conducted at Chitedze Research Station in Malawi, to assess eleven common bean genotypes for yield and yield components under drought conditions. Drought reduced significantly number of pods plant-1, number of seeds pod-1 and consequently...

Author(s): Chantiro, S. J, Bokosi, J. M., Chirwa, R. M. and Mkwaila, E. W.

Chemical ripeners and different harvest periods in sugarcane in State of Paraná, southern Brazil

September 2016

The objective of this work was to evaluate the effects of control action (natural ripening, without ripeners) and of glyphosate, paraquat, fluazi-p-butil, ethephon, etyl-trinexapac, sulfometuron methyl and KNO3 on the number of stalks per area, diameter of the median third of stalks and productivity (tons of canesstalks per hectare), and brix, pol of the sugarcane and extractable sugar. It was used a randomized block...

Author(s): Paulo Barbosa de Oliveira Filho,, José Barbosa Duarte Júnior, Antônio Carlos Torres da Costa, Paulo Sérgio Rabello de Oliveira, Eurides Kuster Macedo Júnior, Vandeir Francisco Guimarães and Willian Bosquette

Stability of soil aggregates in Latosols and Cambisols via standard method and sonification

September 2016

The results of determining the stability of aggregates in water are sometimes contrasting, and do not permit a definition of the energy level or force involved in this analysis. The objective of this study was to compare two methods to determine the geometric mean diameter (GMD) and the percentage of aggregates > 2 mm in Latosol and Cambisol submitted to management under coffee. To conduct this study we collected...

Author(s): Érika Andressa da Silva, Geraldo César de Oliveira, Carla Eloize Carducci, José Maria de Lima, Laura Beatriz Batista de Melo and Pedro Antônio Namorato Benevenute

Enhancing the productivity of groundnut (Arachis hypogaea) through earthening up practices at Tanqua-Abergelle district, Central Tigray, Ethiopia

September 2016

Groundnut, an important crop provides significant sources of cash, oil and an important role in diets but the yield is low due to different constraints like earthening up. In this regard, this study was carried out to improve yields by identifying the best stages of earthening up practices. The experiment was conducted at Abergelle Agricultural Research Centre testing site in 2010/2011 and 2011/2012 cropping seasons....

Author(s): Berhane Sibhatu, Hintsa Meresa, Guesh Tekle and Melese Harf

Contribution of soybean seed treatment with Fluquinconazole to manage yield losses caused by Phakospora pachyrhizi using meta-analysis

September 2016

The reduction in efficiency of triazole and strobilurin fungicides sprayed on soybean crops has stimulated investigations into alternative ways of controlling Asian rust (Phakopsora pachyrhizi). Treating seeds with fluquinconazole may provide additional benefits in terms of disease management. Results obtained through research are inconclusive, however, with studies presenting both positive and negative outcomes. In...

Author(s): Lucas H. Fantin, Marcelo G. Canteri, André L. da Silva, Fernando L. Buss Tupich and Laurence V. Madden

Population dynamism and agrarian transformation in Ethiopia

September 2016

Ethiopia is the second most populous country in Africa yet one of the least urbanized in the world. Despite the population of Ethiopia are overwhelmingly living in the rural area and agriculture has immense role in the national economy, the relationship between population and agrarian change is underrated. The objective of this paper is to comprehend agrarian change with population dynamism in terms of agrarian...

Author(s): Reta Hailu Belda

Performance of different genotypes of maize subjected to inoculation with Azospirillum brasilense

September 2016

The lack and/or inconsistent behavior of results found in literature have limited Azospirillum use in maize crops. In this regard, this study aimed at evaluating the performance and chlorophyll a fluorescence of maize hybrids inoculated with Azospirillum brasilense under different nitrogen levels and protected crop conditions with nutrient solution. The experiment was conducted in a greenhouse at...

Author(s): Fernando Nobre Cunha, Nelmício Furtado da Silva, Carlos Ribeiro Rodrigues, Wilker Alves Morais, Flávio Henrique Ferreira Gomes, Luiz César Lopes Filho, Lays Borges dos Santos Cabral, Marconi Batista Teixeira, Gustavo da Silva Vieira and Cicero Teixeira Silva Costa

Effects of boron fertilization on a crambe crop cultivated in oxisols

September 2016

The consolidation of crambe crops in the agricultural and industrial scenarios comes up against the lack of recommendations and technical information on their cultivation. Thus, this study aims to analyze the effects of boron fertilization on a crambe crop cultivated in two oxisols. The experiment was conducted in a greenhouse owned by the Agronomic Institute of Paraná, in the city of Santa Tereza do Oeste - PR....

Author(s): Felipe Samways Santos, Luiz Antônio Zanão Júnior, Deonir Secco e Natália Pereira and Reginaldo Ferreira Santos and Luciene Kazue Tokura

Biofouling and performance of labyrinth-type emitters in drip irrigation with treated domestic sewage

September 2016

The use of wastewater in irrigated agriculture is an alternative to the lack of water resources of higher quality and allows obtaining, besides the reuse, environmental improvements. In the application of wastewaters, such as treated domestic sewage, localized drip systems are affected by the decrease in application of uniformity and discharge rate of the emitters, due to clogging. In this context, this study aimed to...

Author(s): Flavio Daniel Szekut, Delfran Batista dos Santos, Carlos Alberto Vieira de Azevedo, Márcio Roberto Klein, Maycon Diego Ribeiro and Salomão de Sousa Medeiros

Fungitoxicity activity of homeopathic medicines on Alternaria solani

September 2016

The black spot disease caused by the fungus Alternaria solani (Ellis and Martin) L. R. Jones and Gront is one of the most important diseases of tomato (Lycopersicon esculentum Mill.). The control is usually performed with fungicides, resulting in products contaminated with pesticide residues. In recent years, the use of homeopathic medicines has been highlighted in research for disease control. The aim of this study was...

Author(s): Márcia Vargas Toledo, José Renato Stangarlin, Carlos Moacir Bonato, Thaísa Muriel Mioranza, Mônica Anghinoni Müller, Bruna Broti Rissato, Eloisa Lorenzetti, Sidiane Coltro-Roncato, Carla Rosane Kosmann and Lindomar Assi

Evaluation of mineral composition of endogenous and improved varieties of maize (Zea mays) cultivated in Southern Benin

September 2016

This study aims to establish the mineral potential of 30 varieties of corn mainly used in the traditional and industrial processing sectors. The samples were collected from all agro-ecological zones of corn production in southern Benin. The nutritional profile of samples was evaluated through their mineral composition using AOAC methods. The results of cluster analysis revealed that the samples analysed were ranked in...

Author(s): A. J. Semassa, V. B. Anihouvi, S. W. Padonou, D. Aly, A. Adjanohoun and L. Baba-Moussa

Root system distribution and vegetative characteristics of Prata type bananas under different irrigation strategies

September 2016

This study aimed to analyze the root system distribution and vegetative characteristics (pseudo-stem perimeter, plant height, number of leaves and the leaf area) in ‘Dwarf-Prata’ and ‘BRS-Platina’ in their third production cycles under different five irrigation strategies. The vegetative characteristics were measured at the flowering stage and the root sampling was done after the harvesting in...

Author(s): Marcelo Rocha dos Santos, Lilian Leal Lourenço, Sérgio Luiz Rodrigues Donato, Bismarc Lopes da Silva, Igor Nogueira de Castro and Maurício Antônio Coelho Filho

Yield response of canola (Brassica napus L.) to different inter-row spacings and sowing dates in northwest of Paraná, Brazil

September 2016

In Brazil, the cultivation of canola has increased as a result of higher demand for biodiesel production. However, the current knowledge on planting arrangement and sowing time to boost the crop’s yield in the southern part of the country is limited. On this point, the goal of this work was to evaluate the yield potential of four canola hybrids submitted to different sowing dates and inter-row spacings...

Author(s): Lucas Caiubi Pereira, Gabriel Loli Bazo, Alessandro Lucca Braccini, Luiz Henrique da Silva Lima, Mayara Mariana Garcia and Keila Regina Hossa

Diversity, abundance and incidence of fruit pest insects on three Solanum varieties (Solanaceae) in two agro-ecological zones of Southern Cameroon

September 2016

Various species and varieties of the genus Solanum (Solanaceae) are among the most important market crops produced worldwide. They may be considered as multipurpose crops since leaves and/or fruits are eaten fresh or cooked in various dishes. The increase of garden surfaces and the permanence of gardening have induced frequent outbreaks and diversification of pests and cryptogrammic diseases. In order to improve...

Author(s): Elono Azang Pierre Stephan, Aléné Désirée Chantal, Heumou Cyril Roméo, Ngassam Pierre and Djiéto-Lordon Champlain

Guava rootstocks growth under incorporation of cattle manure and application of organic fertilizer the base of fruit of peel

September 2016

The use of rootstocks in fruit production is extremely important, as well as reducing juvenility also enables faster production. In this context, the objective was to evaluate the effect of different rates of manure and application of organic fertilizer on the growth of guava rootstocks. The experiment was conducted in the greenhouse of the State University of Paraíba (UEPB) in municipality of Catolé do...

Author(s): Mario Leno Martins Véras, José Sebastião de Melo Filho, Lunara de Sousa Alves,  Toni Halan da Silva Irineu, Nelto Almeida Sousa, Lucimara Ferreira de Figueiredo, Edinete Nunes de Melo, Leandra de Melo Cavalcante, Thiago Jardelino Dias and Alvaro Carlos Gonçalves Neto

Selection of input vectors for estimation of aboveground biomass of Mimosa scabrella Benth. using an artificial neural network

September 2016

The objective of this study was to evaluate the effect of input vectors in an artificial neural network (ANN) and determine their best combination to estimate the individual dry biomass of native bracatinga. The dataset consisted of 178 trees of Mimosa scabrella Benth. (bracatinga) from the Metropolitan Region of Curitiba. The ANN used was a Multi-Layer Perceptron; the learning algorithm was the Levenberg-Marquardt,...

Author(s): Aline Bernarda Debastiani, Ana Paula Marques Martins, Carlos Roberto Sanquetta, Sebastião do Amaral Machado, Ana Paula Dalla Corte, and Edilson Urbano

Characterization of water-stress tolerant cotton cultivars based on plant growth and in activity of antioxidant enzymes

September 2016

The aim of this study was to characterize cotton cultivars based on growth data and on antioxidant enzymes activity, in order to identify better-adapted cultivars to water-stress conditions. Nine genotypes were submitted to 7 days of water suppression starting at 45 days after seedling emergence (phase R1). The essay was carried out in greenhouse conditions, where plants were grown in 5 L vases filled with sandy soil...

Author(s): Jessica Damasceno Rodrigues, Carliane Rebeca Coelho da Silva, Rennan Fernandes Pereira, Jean Pierre Cordeiro Ramos, Péricles de Albuquerque Melo Filho, José Jaime Vasconcelos Cavalcanti and Roseane Cavalcanti Santos

Measurement of apparent electrical conductivity of soil and the spatial variability of soil chemical properties by electromagnetic induction

September 2016

The aim of this research is to evaluate the relationship between the measurement of apparent electrical conductivity of soil and its chemical attributes by electromagnetic induction. Geophysics methods used for soil measurement, with electromagnetic induction technique for measuring apparent electrical conductivity of the soil (ECa) is important for soil digital mapping, as it determines soil properties, with which ECa...

Author(s): Glécio Machado Siqueira, Jorge Dafonte Dafonte, Antonio Paz González, Monteserrat Valcarcel Armesto, Ênio Farias de França e Silva, Mayanna Karlla Lima Costa and Raimunda Alves Silva

Association of on-farm feeds handling practices with fungal growth and Mycotoxin production on feeds in smallholder dairy farms, Nakuru, Kenya

September 2016

Practices used by smallholder dairy farmers for handling of feeds at the farm pose a risk of mycotoxins to dairy animals and dairy products, hence a public health concern. The aim of the study was to document the on-farm practices of handling feeds used by these farmers and how they influence the growth of mycotoxin producing fungi together with prevailing extrinsic conditions. Study involved the use of structured...

Author(s): Makau Caroline Mwende, Matofari Joseph Wafula, Muliro Patrick Simiyu and Bebe Bockline Omedo

The Assistat Software Version 7.7 and its use in the analysis of experimental data

September 2016

Statistical programs are essential tools for those who deal with scientific research and need to analyze experimental data. In agriculture, there are often uncontrolled factors, which determine the necessity of statistical analyses of the data. The Assistat software version 7.7 is one of these tools and this study aimed to demonstrate its functionality and efficiency in the analyses of experimental data of agricultural...

Author(s): Francisco de Assis Santos e Silva and Carlos Alberto Vieira de Azevedo

Tolerance of coriander cultivars under saline stress

September 2016

This study aimed to evaluate the emergence, growth and phytomass accumulation of coriander cultivars under saline stress. The experiment was carried out from August to September 2014, in a protected environment (greenhouse), at the Center of Sciences and Food Technology - CCTA of the Federal University of Campina Grande – UFCG, located in the municipality of Pombal-PB, Brazil (6°47’20’’ S;...

Author(s): Francisco Vanies da Silva Sá, Lauter Silva Souto, Emanoela Pereira de Paiva, Miguel Ferreira Neto, Rosilene Agra da Silva, Maria Kaline do Nascimento Silva, Evandro Franklin de Mesquita, Fernandes Antônio de Almeida and Antônio Alves Neto

Effects of potassium fertilization and commercial substrates on development of passion fruit seedlings under greenhouse condition

September 2016

The aim of this work was to evaluate commercially available substrates and levels of potassium on the development of passion fruit seedlings in protected conditions. The experiment was conducted at the city of Presidente Prudente, São Paulo within the period from April to September of 2010. The treatments were made with three different substrates (Bioplant®, Coconut fiber and Vivatto®) and four levels of...

Author(s): Rodrigo Takashi Maruki Miyake, William Hiroshi Suekane Takata, Wellington Eduardo Xavier Guerra, Fernanda Forli, Nobuyoshi Narita and José Eduardo Creste

Morphological diversity and identification of accessions of melon

September 2016

Family agriculture is a rich germplasm source wherever it takes place; however, information on genetic variability of this type of culture in Brazil is scarce. Samples of melon (Cucumis melo L.) accessions grown by family agriculture were rescued and this study aimed at characterizing the genetic variability in one sample of these accessions so as to identify the melon subspecies and the corresponding varieties. Fifteen...

Author(s): Clisneide Coelho de Amorim, Manoel Abílio de Queiróz, Iana Priscila Freitas de Aquino, Ronaldo Simão de Oliveira, Simone de Souza Santos and Graziela da Silva Barbosa

Responses of biofortified common bean varieties to di-ammonium phosphate fertilizer under climate variability conditions in South-Kivu, DR Congo

September 2016

Two trials with the combined effects of seeding density and application of DAP fertilizer on the yield of four biofortified bean varieties were carried out in Kashusha on the experimental site of the Université Evangélique en Afrique during the 2013-2014 agricultural long rains season (September-January) and short rains season (March-May). The overall objective was to investigate the response of...

Author(s): Nachigera Gustave MUSHAGALUSA, Arsène KASHEMWA, Christelle Bonane SINZA, Laurent Chimanuka BIGIRIMWAMI, katcho kARUME and Antoine Kanyenga LUBOBO       

Performance of Peltophorum dubium under intraspecific tree competition and cardinal directions as possibility for integrated livestock-forestry systems

September 2016

Peltophorum dubium can be an alternative of forestry species to be included in integrated crop-livestock-forestry systems in tropical region. The aim of this research was to evaluate the performance of P. dubium under intraspecific tree competition and cardinal directions to measure the possibility of introduction in integrated livestock-forestry systems. The experiment was performed in a Nelder Wheel competition, which...

Author(s): Débora Menani Heid, Ademar Pereira Serra, Omar Daniel, Flávia Araújo Matos, Júlio Cesar Salton, Igor Murilo Bumbieris Nogueira, Thais Cremon, Rafael Pelloso de Carvalho, Simone Priscila Bottega, Simone Cândido Ensinas, Valdemir Antônio Laura, Roberto Giolo de Almeida, André Dominghetti Ferreira and Beatriz Lempp

Fertilizer use optimization approach: An innovation to increase agricultural profitability for African farmers

September 2016

Farmers in Africa have not been fully convinced to invest in fertilizer due to uncertainty on returns to investment. This is despite the fact that, more than two-thirds of people in Sub-Saharan Africa rely on agriculture for employment with many living on small farms  earning less than $1 per day. Usage of fertilizer has remained low and stagnant hence the yields in have been persistently lower than other parts of...

Author(s): H. Rware, C. Kayuki, M. Macharia and G. Oduor

Root-knot nematodes on tomatoes in Kyenjojo and Masaka districts in Uganda

September 2016

In Uganda and elsewhere in the world, tomato is an economically important vegetable and a good source of vitamins A and C. Being an important horticultural crop, its production is threatened by root-knot nematode infections that make plants susceptible to wilting, growth reduction and infection by other pathogens like bacteria and fungi. Identifying the root-knot nematode species on the crop is paramount in designing...

Author(s): Rose Mwesige, , Awol Seid, and Wim Wesemael,

Relationship between the sensory attributes and the quality of coffee in different environments

September 2016

In order to understand the relationship between the sensory attributes of coffee (including factors such as acidity, flavor, and aftertaste), and given the possible influences of genetic factors on coffee quality, we evaluated the sensory quality of 10 commercial cultivars of Coffea arabica in three important coffee regions of Minas Gerais, Brazil, and examined, via path analysis, the interactions of the attributes that...

Author(s): Alex Mendonça de Carvalho, Juliana Costa de Rezende, Tiago Teruel Rezende, André Dominghetti Ferreira, Ramiro Machado Rezende, Antônio Nazareno Guimarães Mendes and Gladyston Rodrigues Carvalho

Distribution, incidence and farmers knowledge of banana Xanthomonas wilt in Burundi

September 2016

Banana Xanthomonas wilt (BXW) is a devastating bacterial disease caused by Xanthomonas campestris pv. musacearum. The disease was simultaneously reported in Cankuzo and Bubanza provinces, Burundi, in November 2010. However, the extent to which the disease has spread to other banana growing regions in the country is unknown. Therefore, to ascertain the distribution and incidence of the disease and farmers’...

Author(s): P. Ndayihanzamaso, N. Niko, C. Niyongere, S. Bizimana, A. Nibasumba, P. Lepoint, W. Tinzaara, S. Kaboneka, E. Sakayoya, W. Jogo, T. Mugiraneza and E. Karamura

Genotypes of conilon coffee can be simultaneously clustered for efficiencies of absorption and utilization of N, P and K

September 2016

The objective of this research was to group C. canephora cv. Conilon coffee genotypes of different ripening cycles for both efficient absorption and utilization of N, P and K in contrasting environments. The experiment was arranged in a factorial scheme 13x4, with fours replicates, the factors being: 13 genotypes of Conilon coffee and four types of fertilization (NPK: 0%-100%-100%, 100%-0%-100%, 100%-100%-0% and...

Author(s): Lima Deleon Martins, Wagner Nunes Rodrigues, Lindomar Souza Machado, Sebastião Vinícius Batista Brinate, Tafarel Victor Colodetti, Daniel Soares Ferreira, Adan Dezan Côgo, Márcio Antônio Apostólico, Paulo Eduardo Teodoro, Marcelo Antônio Tomaz, José Francisco Teixeira do Amaral, Fabio Luiz Partelli and José Cochicho Ramalho,

Billet metering mechanism of a sugarcane planter

September 2016

Mechanical sugarcane planters simultaneously perform ploughing, fertiliser application, seedling metering and furrow covering operations. This study aimed to evaluate the billet metering quality and uniformity of a sugarcane planter and the total damage to buds. The experimental design used was completely randomised in a 2 x2 factorial arrangement totalling four treatments, which consisted of two planting speeds (5.0...

Author(s): Ariel Muncio Compagnon, Carlos Eduardo Angeli Furlani, Rouverson Pereira da Silva, Marcelo Tufaile Cassia and Fernando Henrique Arriel

Proximate composition, amino acid profile and some anti-nutrients of Tithonia diversifolia cut at two different times

September 2016

The experiment assessed the proximate and amino acid compositions, metabolizable energy and anti-nutrient constituents of Tithonia diversifolia leaf meal (TDLM) harvested separately in the months of May and September, respectively using standard laboratory methods. The crude protein (20.5±0.1%), crude fibre (18.8±0.01%) and ash (14±0.1%) significantly (pË‚0.05) increased in TDLM for September...

Author(s): T. A. Oluwasola and F. A. S. Dairo

Thermal of the Campina Grande - PB, Brazil and its environmental impacts

September 2016

With the incorporation of new behavioral habits for the most demanding customers, respect for the environment, the industrialized countries and in industrialization have adopted quality standards for air and water, and emissions standards for industrial liquid effluents and gaseous and licensing systems of polluting activities, in line with current environmental legislation. Thus, this study aimed to evaluate the...

Author(s): Joaci dos Santos Cerqueira, Helder Neves de Albuquerque, Ronaldo do Nascimento, Hallyson Oliveira, José Alberto Ferreira Cardoso and Armindo Bezerra Leão

Genetic diversity in sweet cassava from the Brazilian Middle North Region and selection of genotypes based on morpho-agronomical descriptors

September 2016

This work had as objective the morpho-agronomic characterization of germplasm of cassava (Manhiot esculenta Crantz) from the Brazilian Region Middle North and the selection of genotypes. The germplasm collection was carried out in autochthonous fields. 10 genotypes of which, 8 were ethno-varieties and 2 modern varieties (BRS Dourada and BRS Gema de Ovo), were collected. A completely randomized blocks design was used and...

Author(s): Ronaldo Silva Gomes, Cleverson Freitas de Almeida, José Roneilson da Silva Costa, Ronaldo Machado Junior, Fabio Teixeira Delazari, Francisco Charles da Silva Santos and Derly José Henriques da Silva

Biomass and nutrition stock of grassland and accumulated litter in a silvopastoral system with Cerrado species

September 2016

The crop-livestock-forest integration systems are a form of sustainable production, creating a consortium between the cultivation of crops and forest production and the creation of pastures for livestock breeding, seeking a synergy between the system components. Therefore, integrating agricultural crops with tree species provides countless benefits to the components, such as the maintenance and increase in nutrient...

Author(s): Francine Neves Calil, Nauara Lamaro Lima, Raissa Tavares Silva, Mariana Dianese Alves de Moraes, Pedro Vilela Gondim Barbosa, Pedro Augusto Fonseca Lima, Daniel Cardoso Brandão, Carlos de Melo e Silva-Neto, Hellen Cristina de Sousa Carvalho and Abadia dos Reis Nascimento

Impact of the pressure plates of picker cotton platforms on the efficiency and quality of cotton fibers

September 2016

An experiment was performed in a cotton-producing property located in Primavera do Leste - MT - (Brazil). the quantitative losses and the presence of bark and stems in the cotton fiber quality measuring instrument as analyzed by High Volume Instrument (HVI) was noted . The study was conducted to investigate a combined speed of work with a mechanical adjustment of the distance of the pressure plates and the screws on the...

Author(s): Hiago Renrique R. Zanetoni, Renildo Luiz Mion, Nayra Fernandes Aguero, Renato Bassini, Cíntia Michele Baraviera, Carlos Alberto Viliotti, Jean Louis Belot, Sérgio Gonçalves Dutra,  Myllena Teixeira Martins, Luiza R. Cabral Da Silva, William Lima Crisostomo and Carlos Alberto Viliotti

Assessment of a crambe (Crambe abyssinica Hochst) crop under no-tillage in different sowing dates

September 2016

Crambe (Crambe abyssinica Hoschst) is a winter oilseed crop with yield potential of 1500 kg ha-1. It is indicated for crop rotation systems and tolerates moderate frost. However, crambe presents thermal and water limitations that influence sowing dates since it needs water at blooming and at least 200 mm rainfall until it reaches the flowering stage. This study aimed to assess the performance of a crambe crop in...

Author(s): Reginaldo Ferreira Santos, Octavio Henrique Viana, Luciene Kazue Tokura, Deonir Secco, Cristiano Fernando Lewandoski, Paulo de Lima Bueno, Oswaldo Hideo Ando Junior, Maritane Prior and Helton José Alves

Increased phenylpropanoid accumulation in essential oils of Petroselinum crispum at different Sulphur dilutions

September 2016

This study aimed to evaluate the influence of different doses of Sulphur on yield and chemical composition of parsley essential oil. Sulphur was applied at different dilutions in the centesimal scale ranging from 0c (control), 6, 12, 18, 24 to 30c. The experiment was carried out in the field, and for each treatment there were five replications, that is, five vases with one plant each. The evaluated parameters were:...

Author(s): Giuliana Zardeto, Denise Akemi Fujisawa, Keila Fernanda Raimundo, Carla Maria Mariano Fernandez-Andrade, Fabiana Borges Padilha Ferreira, José Eduardo Gonçalves, Ranulfo Piau Junior, Orlando Seiko Takemeura, Simone de Melo Santana Gomes and Zilda Cristiani Gazim,

Two approach comparison to define crop management zones (MZs)

September 2016

The use of yield-level management zones (MZs) has demonstrated high potential for site-specific management of crop inputs in traditional row crops. Two approaches were use: all variables approach (all_Var) and stable variables approach (sta_Var). In each approach, variables selected had significant correlation with yield, while all redundant and non-autocorrelated variables were discarded. Two fields were use in this...

Author(s): Kelyn Schenatto, Eduardo Godoy de Souza, Claudio Leones Bazzi, Nelson Miguel Betzek and Alan Gavioli

Residues from urban vegetable pruning in the production of the medicinal mushroom Ganoderma lucidum

September 2016

Every month, about 40 tons of waste prunings of trees and grasses are wasted in Bauru, São Paulo, Brazil, occupying unimaginable volumes in the municipal landfill. This rich material has been tested for cultivation of medicinal mushroom Ganoderma lucidum, rather unknown in Brazil, compared to commonly use eucalyptus sawdust. Thus, the objective of this study was to evaluate the use of wasted urban vegetable...

Author(s): Guilherme Polidoro Alquati, Otavio Augusto Pessotto Alves Siqueira, André Luiz Merthan Saad, Sthefany Rodrigues Fernandes Viana and Meire Cristina Nogueira De Andrade

Corn hybrid seed damage as a function of metering device in corn planting

September 2016

Seed quality control is becoming increasingly important, since the market is increasingly competitive. The planting operation process should occur in order to avoid mechanical damage, which may affect the seed quality. This study aimed to evaluate the effect of mechanical damage caused by meter mechanisms (mechanical and pneumatic) on physical and physiological quality of corn seeds. The experiment was carried out in a...

Author(s): Aline C. Serrano, Carlos Eduardo A. Furlani, Rafael S. Bertonha, Fabio A. Cavichioli and Cristiano Zerbato

Agronomic efficiency of Bradyrhizobium in peanut under different environments in Brazilian Northeast

September 2016

Several legumes have natural ability to associate with nitrogen-fixing bacteria known as rhizobia. The efficiency of this association depends on the plant and bacterial genotype and the edaphoclimatic conditions. Peanut is a tropical legume able to associate with a wide range of rhizobia and the selection of efficient bacteria is important to increase the nitrogen fixation in this crop. In order to investigate the...

Author(s): Ciro Igor Torres Sizenando, Jean Pierre Cordeiro Ramos, Paulo Ivan Fernandes-Júnior, Liziane Maria de Lima, Rosa Maria Mendes Freire and Roseane Cavalcanti dos Santos

Cadmium effects on sunflower growth and mineral nutrition

September 2016

A hydroponic greenhouse study was carried out to evaluate the effects of increasing cadmium (Cd) concentration on plant growth, mineral nutrition and Cd distribution of H-250 sunflower genotype. Exposure to increasing Cd concentrations reduced plant biomass by 40, 34, 47 and 42% of the total, leaves, stem and roots dry weights as compared to the control. Regardless of the treatment most of Cd uptake by the genotype was...

Author(s): Miriã Maria Almeida de Abreu Silva Ferreira, Jorge Antônio Gonzaga Santos, Silvany Cardim Moura, Claudia Brito de Abreu, Marcela Rebouças Bomfim and André Dias de Azevedo Neto

Morphology and biomass yield of forage cactus under mineral fertilization in organic soil

September 2016

The objective of this study was to evaluate the morphological characteristics and yield of the biomass of forage cactus in mineral fertilizers in organic soil. The experiment was conducted in vases, in the open in the experimental area of the Federal University of Campina Grande - UFCG. The experimental design was completely randomized in a factorial scheme 3×2 with four replications in which factors consisted of...

Author(s): Patrícia Ferreira da Silva, Rigoberto Moreira de Matos, Vitória Ediclécia Borges, José Dantas Neto and Maria Sallydelândia  Sobral de Farias

Quali-Quantitative study of biogas production from bio-digestion of cutting poultry

September 2016

The purpose of this study was to evaluate the biogas production and the potential production obtained with the anaerobic digestion of cutting poultry carcasses. The carcasses were used to supply batch digesters with 8 liters of capacity of fermentation material. To perform this process, analysis content of total solids (TS) and volatile solids (VS) were performed. We used a system of three treatments, TRA (Treatment A)...

Author(s): Andrei Antonio Mondardo, Samuel Nelson Melegari de Souza, Solles Augusto Rovaris, Claudinei de Almeida, Glaucio José Gomes, Simoni Spohr Venzon, Reginaldo Ferreira Santos and Jair Antonio Cruz Siqueira

Genetic divergence between soybean cultivars grown in the Cerrado in Southwestern Piauí, Brazil

September 2016

Knowing plant traits and their contribution to genetic diversity is key to identify favorable genotypes and breed new cultivars. This article aims to describe and quantify the genetic divergence between soybean cultivars grown in the Cerrado in southwestern Piauí, Brazil, and identify favorable genotypes for hybridization. To do this, 13 soybean cultivars were grown in the region and assessed concerning...

Author(s): Tiago de Oliveira Sousa, Daniela Vieira Chaves, Elaine Heberle, José Hamilton da Costa Filho, Farley Silva Santana, Carlos Roberto Barbosa Monteiro, Rodrigo de Sá Ferreira and Maria Eugenia Lima dos Santos

Present status of the black rot disease of tea in Bangladesh

September 2016

A survey was carried out in 2015 at Bangladesh Tea Research Institute (BTRI) to ascertain the impact of varieties, topography, age of plants and shade condition on the incidence and severity of Black rot disease in tea. Data were collected monthly from 300 tea bushes selected randomly for each attribute with three replications. Data were recorded on the incidence and severity of the diseases by observing the typical...

Author(s): M. S. Islam, I. Ahmad and M. Ahmed

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