African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 6666

AJAR Articles

Perceptions and clustering of Greek farmers on the new CAP: Opportunity or threat?

March 2018

This study aims to highlight the problems of the Greek agriculture and to identify the level of information that the farmers have regarding the Common Agricultural Policy (CAP). Here, primary data were collected from in-depth interviews (structured questionnaire) with 241 farmers in the region of Thessaly-Greece. The study was conducted in November 2016, within the geographical boundaries of the Region of Thessaly. The...

Author(s): George Theodossiou, Christos Karelakis and Apostolos Goulas  

Nitrogen fertilization applied through drip fertigation and broadcasted in blueberry crop

March 2018

The aim of this experiment was to evaluate the effects of nitrogen fertilization on the blueberry crop throughout three consecutive years with different rates and ways of fertilizer application. The experiment was carried out in a commercial orchard located at the county of Vacaria-RS, in Southern Brazil utilizing the blueberry cultivar ‘Bluecrop’. The treatments consisted of the broadcasted nitrogen rates:...

Author(s): Leonardo Oliboni do Amaral, Elaine Damiani Conte, Lucas De Ross Marchioretto, Endrigo Soares Golin and Diego da Rocha Cavaletti  

Wet bulb dimensions associated with different flow and terrain declivity

March 2018

Geometry information of wet bulb is important for the design of projects and management of drip irrigation, mainly to estimate the volume of wet soil, emitter flows and irrigation time. This study aims to determine the dimensions of wet bulb formed by drippers with different flow and terrain declivities. For this, soil moisture levels were determined throughout the soil profile after drip irrigation with three flow...

Author(s): José Antonio R. Souza, Débora A. Moreira, Leandro C. Salomão, Fernando F. Cunha, Renan S. Pedroso, Ellen L. Silva, Janine M. Gonçalves, João G. F. Rezende, João V. C. Costa and Jamerson F. Silva Filho

Phosphorus adsorption and its relationship to the physical and chemical characteristics with different soil classes

March 2018

In order to determine the characteristics of phosphorus adsorption using the Langmuir and Freundlich isotherms and its relationship with some of the chemical and physical properties of soils, a study was developed at the Embrapa Soil Laboratory with soil samples (0 - 30 cm) from four classes of topsoil: Orthic Chromic Luvisols, Eutrophic Cambisols, Fluvic Neossol and Eutrophic Cambisols Typical. The hyperbolic model of...

Author(s): José Félix de Brito Neto, Leonardo Theodoro Bull, André Luiz Pereira da Silva, Cláudio Silva Soares and Joaquim Alves de Lima Junior  

Effect of poultry litter biochar on Ultisol physical properties

March 2018

A study was carried out to investigate the effect of biochar produced from the pyrolysis of poultry litter feedstock in some of the physical properties of a Yellow Red Argisol eutrophic typical (Ultisol), located in the municipality Lagoa Seca, State of Paraiba, Brazil, that is, granulometric analysis,  bulk density, porosity and available water capacity. Six doses of biochar (0; 10; 15; 20; 25 and 30 ton ha-1)...

Author(s): Lúcia Helena Garófalo Chaves, Washington Benevenuto de Lima, Iêde de Brito Chaves, Josué da Silva Buriti, Marcos Vinicius Lia Fook and José William de Lima Souza  

Characterization and classification of salt affected soils and irrigation water in Tendaho sugarcane production farm, North-Eastern Rift Valley of Ethiopia

March 2018

Considerable area of land is becoming unproductive every year because of salinity and sodicity in lowlands of Ethiopia. For sound land use and irrigation water management, it is a paramount important to know the chemical composition of soils and irrigation water. Therefore, the study was aimed to evaluate the physicochemical properties of soils and irrigation water of Tendaho sugarcane production farm, located in...

Author(s): Mulat Asmamaw, Ashenafi Haile, and Gezai Abera,  

Definition of smallholder Sheko cattle keepers’ breeding objectives through phenotypic ranking and choice experiments in Ethiopia

February 2018

This study aimed at identifying Sheko cattle keepers' preferences by way of phenotypic ranking and hypothetical choice experiment in their habitat in order to define the indigenous selection criteria. The ranking experiment report was based on 15 cows and 6 to 9 bulls. Three animals of the same sex were randomly assigned in one group that resulted into five groups for cows and two to three groups for bulls. Thirty...

Author(s): Elias Bayou, Aynalem Haile, Solomon Gizaw and Yoseph Mekasha  

Assessment of the knowledge and use of pesticides by the tomato farmers in Mwea Region, Kenya

February 2018

Current cultivation of vegetables to meet food security standards requires the use of pesticides which reduce losses from pests and diseases. A cross-sectional survey for pesticides use in tomato farms was conducted in Mwea, Kenya to assess the practices and constraints faced by the farmers. Gender, level of education, the use of pesticides in farms, experience in tomato farming, list of common pesticides, periodicity...

Author(s): J. H. Nguetti , J. K. Imungi, M. W. Okoth, J. Wang’ombe, W. F. Mbacham and S. E. Mitema  

Performance of five potato varieties with regards to growth and production of mini-tubers under an aeroponic system in central highlands of Kenya

February 2018

There is limited information on the performance of Kenyan potato varieties under aeroponic systems. Experiments were therefore carried out at the Kenya Agricultural Research Institute (KARI), Tigoni, under an aeroponic system in 2012 and 2013 to evaluate the growth and mini-tubers production of five varieties commonly grown in Kenya and differ in vegetative and reproductive characteristics. The experiment was set up in...

Author(s): Miriam W. Mbiyu, Charles Lung’aho, Susan A. Otieno, Moses W. Nyongesa, Margaret N. Muchui, and Judith N. Ogemma  

Optimum plot size for experiments with papaya genotypes in field

February 2018

The objective of this study was to determine a suitable plot size for field experiments with papaya genotypes. Two experiments were carried out using a randomized complete block design with 11 and 12 papaya genotypes, respectively. In both experiments, plots consisted of one row, with 10 plants each. Spacing between rows was 3.5 m, with 1.5 m between plants. The characteristic evaluated was fruit production in t ha-1 in...

Author(s): Edilson Romais Schmildt, Adriel Lima Nascimento, Alan de Lima Nascimento, Karina Tiemi Hassuda dos Santos, Renan Garcia Malikouski, Omar Schmildt, Clemilton Alves da Silva, Geraldo Antônio Ferreguetti, Márcio Paulo Czepak and Julián Cuevas  

Using the p-median location model to set up aerodromes for coverage fertilization of eucalyptus plantations

February 2018

In this study an economic analysis was conducted to evaluate problem associated with a geographical information system (GIS) using facility location models for the p-median in order to optimize the location of aerodromes for the aerial fertilization (coverage fertilization) of eucalyptus plantations. The location model was tested on a 9,095.65 ha farm located in the Três Lagoas municipality in the Mato Grosso do...

Author(s): Leonardo Pereira Fardin, Helio Garcia Leite, Daniel Henrique Breda Binoti, Carlos Antonio Alvares Soares Ribeiro, Vicente Paulo Soares, Antonio Santana Ferraz, Márcio Bernardi and Aguida Beatriz Travaglia Viana  

Studying the volatility effect of agricultural exports on agriculture share of GDP: The case of Egypt

February 2018

This article aims to examine the long and short run relationship between agricultural exports and agriculture share of GDP. Links between series considered are assessed by co-integration analysis using Johansen co-integration technique and ECM-GARCH. Results indicate a positive link in the short and long term between agricultural exports and agriculture share of GDP, as well as co-integration between the pairs of series...

Author(s): Osama Ahmed, and Walid Sallam  

Evaluation of the effect of genotype, environment and genotype X environment interaction on white common bean varieties using additive main effect and multiplicative interaction (AMMI) analysis in the mid-altitude of Bale zone, Southeastern Ethiopia

February 2018

Twelve white common bean genotypes were evaluated along two checks at three diverse locations in the mid-altitude of Bale zone, southeastern Ethiopia for two consecutive years 2014 and 2015 in order to determine their stability. The genotype by environment interaction (GEI) has an influence on the selection and recommendation of cultivars. The objective of this work was to see the effect of GEI and evaluate the...

Author(s): Tadele Tadesse, Amanuel Tekalign, Behailu Mulugeta and Gashaw Sefera  

Land use effects on soil erodibility and hydraulic conductivity in Akure, Nigeria

February 2018

This research was carried out to investigate the effects of three land use categories (grazed, cropped and forest land) on soil erodibility and hydraulic conductivity. Hydraulic conductivity was determined by a steady‐state flow using a mini‐disk infiltrometer while soil erodibility was determined following the Wischmeier and Smith equation. A suction rate of 2 cm s-1 was chosen for field infiltration measurement...

Author(s): Yusuf Habeeb Ajibola, Oguntunde Philip Gbenro, and Lawal Abosede Khadijah  

Sole and combined effect of three botanicals against cowpea seed bruchid, Callosobruchus maculatus Fabricius

February 2018

The bioactivity of three botanical powders in sole and combination against Callosobruchus maculatus (Fab.) was investigated at 29±3°C and relative humidity (R.H.) OF 65+5% in the laboratory. The appropriate mixing ratio of Cymbopogon citratus (C), Alstonia boonei (A) and Hyptis suaveolens  involved seven  combinations viz., C:A, C:H, A:H, C:A:H, H2:C:A, A:C2:H, H:C:A2 in simple ratios 1:1, 1:1, 1:1,...

Author(s): O. M. Azeez and O. O. R. Pitan  

Growth and physiological responses of coffee (Coffea arabica L.) seedlings irrigated with diluted deep sea water

February 2018

Concentrations of 5, 10, 20, and 40% deep sea water (DSW) were tested, with irrigation water serving as the 0% control (tap water) on coffee (Coffea arabica L.) seedlings. The results showed that the growth parameters were affected significantly (α < 0.05) by the irrigation of 20 and 40% deep sea water. There were significant differences (α < 0.05) among treatments in stomata density/mm2, stomata...

Author(s): Mesfin Haile and Won Hee Kang

Effect of Pseudomonas putida on chrysanthemum growth under greenhouse and field conditions

February 2018

Chrysanthemum production stands out in ornamental plants market and several techniques can improve the production of this plant. Among them, is the use of beneficial microorganisms such as plant growth promoting rhizobacteria (PGPR); however, the use of PGPR has not been explored enough so far in chrysanthemum production, especially in field conditions. With regards to rhizobacteria, the group, Pseudomonas, can be...

Author(s): Matheus A. P. Cipriano and Sueli S. Freitas  

Role of climate change awareness in sustainable soil nutrient management by smallholder farms in Burkina Faso

February 2018

Climate change effects are threats to the livelihood of Sub-Saharan smallholder farms. Farmers’ response and readiness to take adaptive measures depend on how they perceive (perception) and moreover understand and recognize the causes (awareness) of climate change. Most studies used interchangeably perception and awareness to climate change. Taking the example of soil nutrient management, this study demonstrated...

Author(s): Boundia Alexandre Thiombiano, Dénis Ouédraogo, Quang Bao Le and Samuel Nii Odai  

Phytosociology of weed community in two vegetable growing systems

February 2018

The aim of this study was to perform a phytosociological survey of the weed community present in organic and conventional vegetable growing systems conducted in Alagoas state, in Brazil. The survey was carried out from February 2014 to January 2016, within which 30 samplings were made. The evaluated parameters were given by the calculation of frequency, density, abundance, relative frequency, relative density,...

Author(s): Rubens Pessoa De Barros, Ligia Sampaio Reis, Isabelle Cristina Santos Magalhães, Wanderson Ferreira Da Silva, João Gomes Da Costa and Aldenir Feitosa Dos Santos  

Characterization of livestock farming in Jacaré dos Homens, Alagoas, Brazil

February 2018

Dairy farming is one of the most significant activities for Brazilian agribusiness, especially for its diversity and breadth. This study aimed to analyze the characterization of dairy farming activity developed in the Baixas community, in the city of Jacaré dos Homens-AL, Brazil, raising information about the production system adopted and considering the relevance of this activity to the locality. The research...

Author(s): Cristian Cavalcante Félix da Silva, José Crisólogo de Sales Silva, André Maia Gomes Lages, Sandrine Cíntia Amorim de Barros White and Marília Ferro Marques Cavalcante  

Gas exchange and yield of Prata-type banana plants with fertilizer sources for organic management

February 2018

The aim of this paper is to evaluate gas exchanges and yield of Prata-type banana plants subjected to fertilizer sources for organic management in soil with improved fertility. Two cultivars (‘Dwarf-Prata’ and ‘BRS Platina’), 5 K2O rates (0, 200, 400, 600, and 800 kg ha-1 year-1) supplied by cattle manure and Naturalplus® rock powder, and 2 evaluation times (8:00 am and 2:00 pm) were arranged...

Author(s): Pedro Ricardo Rocha Marques, Sergio Luiz Rodrigues Donato, Abel Rebouças São José and Raul Castro Carriello Rosa

Screening of wheat germplasm for seed associated fungi in geographical areas of Pakistan

February 2018

One hundred wheat (Triticum aestivum L.) accessions were selected on the basis of different geographical areas of Pakistan. Isolation and identification of seed born fungi were conducted according to standard blotter test and a total of five major seed borne fungi including Alternaria alternata, Aspergillus niger, Fusarium species, Drechslera species and Phytophthora species were isolated from the wheat seeds. The...

Author(s): Attiq-ur-Rahman, Riffat Tahira, Aqleem Abbas, Shahid Iqbal, Israr Ahmad and Waseem Ahmad

Genetic diversity study of some banana genotypes collected from various parts of India through RAPD analysis

February 2018

Globally, banana is the fourth most important fruit crop and is grown in more than 130 countries across the world. Traditional procedure to characterize banana plants by morphological descriptors has many limitations, and different communities refer to the same local cultivars by different names due to lack of clear clone identity resulting in unnecessary duplication with regard to cultivation, conservation and...

Author(s): Prasenjit Kundu, Fatik Kumar Bauri and Sutanu Maji

Higher K+/Na+ and lower reactive oxygen species and lipid peroxidation are related to higher yield in maize under saline condition

February 2018

Thirty six single cross hybrids with six commercial checks were evaluated for yield performance along with earliness, plant height and ear height. The mean performance for days to tasseling and days to silking were significantly different among the hybrids. Considering the yield, Kaberi 50 and Pioneer 3396 were found as the best and the second best check, respectively. None of the hybrids produced higher yield compared...

Author(s): Rohman M. M., Islam M. R., , Mahmuda B. M., Begum S., Fakir O. A. and Amiruzzaman M.

Litter production in a natural stand of Brazil nut trees (Bertholletia excelsa Bonpl.)

February 2018

This research estimated litter production and analyzed its relation to environmental variables such as maximum temperature, insolation, and rainfall. The study was conducted on a 300 × 300 m experiment as part of the project titled mapping of native Brazil nut stands and socio-environmental and economic characterization of Brazil nut production systems (MapCast), in the Tapajós National Forest (FLONA...

Author(s): Quêzia Leandro de Moura Guerreiro, Raimundo Cosme de Oliveira Júnior, Maria de Lourdes Pinheiro Ruivo, Katia Emidio da Silva, Troy Patrick Beldini, Marcelino Carneiro Guedes, Amanda Fabricia Leão Mota, Brenda Lohana Teixeira de Moraes, Paulo Roberto Brasil Santos and Izabela Moura Duin

Sustainable and technological strategies for basic cereal crops in the face of climate change: A literature review

February 2018

At the international level, corn, wheat and rice are basic grains considered to be the most important food source for humans, as they are a fundamental part of the daily diet and represent more than 55% of the caloric intake. They make up the greater production and consumption in the world. Due to Climate Change, these highly vulnerable crops to extreme temperatures have suffered a reduction in quality and quantity of...

Author(s): Silvia Soledad Moreno Gutiérrez, Alfredo Toriz Palacios, Jorge A. Ruiz-Vanoye and Sócrates López Pérez

Genotype × environment interaction and yield stability of Arabica coffee (Coffea arabica L.) genotypes

January 2018

Lack of suitable varieties that exhibit stable yield performances across wide ranges of environments is the major factor among several production constraints contributing to low productivity of Arabica coffee in Ethiopia. Eleven advanced Limmu coffee genotypes were evaluated in eight environments (four locations over two years) to determine the existence of GEI and yield stability performances. The experiment was laid...

Author(s): Lemi Beksisa, Sentayew Alamerew, Ashenafi Ayano and Gerba Daba  

Maize leaf area estimation in different growth stages based on allometric descriptors

January 2018

The literature points out the need for leaf area (LA) calibration models that are suitable for specific varieties (variety-specific). These models should be capable of coping with different crop conditions, growth stages, and agronomic practices. The objective of the current study was to develop a model for estimating the LA of ​​maize (Zea mays L.), considering the entire growth cycle, based on non-destructive...

Author(s): Sosdito Estevão Mananze,, Isabel Pôças, and Mario Cunha,  

Effect of application of flowering inhibitor on sweet sorghum

January 2018

Studies on sweet sorghum have been conducted in countries like Brazil, USA, India and Argentina to complement ethanol production. In Brazil, it is cultivated in areas for sugarcane renovation, and can be used in sugarcane industries. However, the use of chemical flowering inhibitor can increase sucrose in stalks, resulting in higher production. Therefore, the goal of the present study is to evaluate the effect of Etefom...

Author(s): Eduardo do Valle Lozano, Letícia Murador Blanco, Giovanni Uema Alcantara, Lucas Conegundes Nogueira, Sandro Ciaramello and Gustavo Henrique Gravatim Costa

Demographic and socio-economic characteristics of cassava farmers influencing output levels in the Savannah Zone of Northern Ghana

January 2018

The research studied the effects of demographic and socio-economic characteristics of cassava farmers on output levels in the Savannah Zone of Northern Ghana. One hundred and fifty cassava farmers were sampled randomly. The data were collected through a structured questionnaire from respondents. The farmers were drawn from three regions that fall under the Savannah Zone. Six districts were purposively selected from the...

Author(s): Mohammed M. Abdul-kareem and Mehmet A. Åžahinli

Conilon plant growth response to sources of organic matter

January 2018

In the production of quality plant, it is important to consider the growing substrate since it provides plants with very important physical and chemical characteristics of the soil. Many organic materials of vegetal or animal origin have been used in mixtures of substrates for plant production. This study evaluated the development, quality and physiological components of Conilon coffee plants as a function of substrates...

Author(s): Waylson Zancanella Quartezani, Ramon Amaro de Sales, Talita Aparecida Pletsch, Sávio da Silva Berilli, Adriel Lima Nascimento, Leonardo Raasch Hell, Euzileni Mantoanelli, Ana Paula Candido Gabriel Berilli, Ricardo Tobias Plotegher da Silva and Raniele Toso

Spatial econometric analysis of the main agricultural commodities produced in Central-West Region, Brazil

January 2018

The aim of this paper is to present novel variables in the Brazilian Central-West Region to evaluate the spatial dependence of the Gross Domestic Product of agriculture and livestock (GDPagri) and the Gross Value of Production (GVP) on the main agricultural and livestock commodities in order to identify clusters of high and low spatial correlations. Data on the municipalities of Mato Grosso do Sul State (MS) between...

Author(s): Alexander Bruno Pegorare, Paula Martin de Moraes, Reginaldo Brito da Costa, Urbano Gomes Pinto de Abreu, Dany Rafael Fonseca Mendes, Tito Belchior Silva Moreira, George Henrique de Moura Cunha and Michel Constantino

Rhizome development in Sorghum bicolor × Sorghum halepense families in the tropical ecosystem of Uganda

January 2018

Many landraces and improved cultivars of sorghum (Sorghum bicolor) grown in Uganda have late maturity and are susceptible to several biotic and abiotic stresses. Introgression of the rhizomatous trait from perennial sorghum (Sorghum halepense) could improve stress tolerance. However, phenotypic characterization of exotic perennial sorghum germplasm under Ugandan environmental conditions is essential to select desirable...

Author(s): Shakirah Nakasagga, Moses Biruma, Geoffrey Tusiime, Pheonah Nabukalu and Stan Cox

Soybean hull and/or white oat grain for steers finished in feedlot

January 2018

The aim of this study is to evaluate the performance of feedlot finished steers receiving grain oat and/or soybean hull in their diet. Thirty six Nellore crossbred with Charolais steers, that received diet with concentrate ratio of 50:50 in all diets independently of the treatment, with sorghum silage as forage and concentrate according to the proposed treatment: soybean hull, oat grain and a mixed concentrate with...

Author(s): Guilherme Joner, Dari Celestino Alves Filho, Andrei Retamoso Mayer, Ana Paula Machado Martini, Gilmar dos Santos Cardoso, Camille Carijo Domingues, Mauren Burin da Silva, Patrícia Machado Martini, Joziane Michelon Cocco and Ivan Luiz Brondani

Effect of planting date on tepary bean yield and yield components sown in Southern Botswana

January 2018

Tepary bean is a crop that is slowly gaining momentum into the cropping system of Botswana. A study was conducted to determine the effect of planting date on yield and yield components of tepary bean and identify the optimum sowing of the crop. A rain-fed experiment was conducted for two seasons (2012 to 2014), using a randomized complete block design replicated three times in a split plot with three sowing dates in...

Author(s): Odireleng O. Molosiwa and Sylvia B. Kgokong

Development of a crop growth subroutine for the Watershed Resources Management (WRM) model

January 2018

Vegetation has a marked effect on runoff and soil moisture and plays an important the hydrologic cycle. The Watershed Resources Management (WRM) model, a process-based, continuous, distributed parameter simulation model developed for hydrologic and soil erosion studies at the watershed scale lack a crop growth component. As such, this model assumes a constant parameter values for vegetation and hydraulic parameters...

Author(s): Ogbu K. N., Mbajiorgu C. C., Ugwuoke K. and Ndulue E. L.

Tree species’ growth in a silvipastoral system in Amazon

January 2018

This research aimed to evaluate the dendrometric development of four tree species (Carapa guianensis Aubl. (Meliaceae); Dipteryx odorata (Aubl.) Willd (Fabaceae), Swietenia macrophylla King (Meliaceae) and Handroanthus chrysotrichus (Mart ex A. DC.) Mattos (Bignoniaceae)) in a silvopastoral system in Santarém, Pará, Brazil. Productive activities in the forest sector create a demand for technical capacity...

Author(s): E. C. Silva, J. R. V. Gama, R. Rode and A. L. M. Coelho

Physiological quality of bean genotypes seeds peanut and xamego treated with fungicides and insecticides

January 2018

Bean is one of the most important crops because it is a staple food. In order to control diseases and pests, the use of fungicides and insecticides in the seed treatment are efficient methods. In this sense, the aim of this study was to evaluate the effect of fungicides and insecticides on physiological quality of bean seeds. The experiment was conducted in a laboratory and greenhouse, and seeds of two genotypes of...

Author(s): Khétrin Silva Maciel, Paula Aparecida Muniz de Lima, Fernando Zanotti Madalon, Simone de Paiva Caetano Bucker Moraes, Vinícius Agnolette Capelini, Caroline Merlo Meneghelli, José Guilherme Bergamim Mellere, Patrícia Alvarez Cabanez, Rodrigo Sobreira Alexandre and José Carlos Lopes

Use of alternative substrates in production of tomato seedlings

January 2018

Tomato is one of the most produced vegetables in the whole Brazilian territory, also presenting great income to the family producer. The use of organic or alternative substrates has grown, since its acquisition by the producer is easy. Aiming at these factors, the objective of this work was to evaluate the production of three cultivars, Santa Clara, Santa Cruz Kada Gigante and Santa Adélia tomatoes in seven types...

Author(s): Hiago Felipe Lopes de Farias, Fernando Ribeiro Teles de Camargo, Isneider Luiz Silva, Sueli Martins de Freitas Alves, Caroline Xavier dos Santos and Elaine de Fátima Miranda Freitas

Effects of extracts of Oxalis barrelieri L. and Cymbopogon citratus stapf, coupled with NaCl sorting on; seed health, germination and seedlings vigor of rice (Oryzae sativa L).

January 2018

The extracts of Oxalis barrelieri and Cymbopogon citratus were tested for their antifungal activity against Bipolaris oryzae and Fusarium moniliforme, and use as seed treatment coupled with NaCl treatment to improve the seed germination and the seedlings vigor of treated rice seeds. The significance of the inhibitory activity of the plant extracts against B. oryzae and F moniliforme was type of extract and concentration...

Author(s): Fouelefack François Romain, Nguefack Julienne, Dongmo Lekagne Joseph Blaise, Dongmo Nanfack Albert, Azah Udom Rene and Nkengfack Augustin Ephrem

Gene expression and antioxidant enzymatic activity in passion fruit exposed to aluminum

January 2018

The objective of this study was to investigate changes in enzymatic activity and gene expression related to antioxidant defense in two passion fruit cultivars (FB100 and FB200) exposed to aluminum. The specific activity of superoxide dismutase (SOD), catalase and ascorbate peroxidase were analyzed, in addition to their relative expression pattern. The characterization of gene expression was achieved by semi-quantitative...

Author(s): Irany Rodrigues Pretti, Anny Carolyne da Luz, Tatiane Lemos Perdigão, Raquel Alves Araújo and Maria do Carmo Pimentel Batitucci

Assessment of entomotoxic effects of powder and oil from leaves and seeds of Hura crepitans (L.) in the control of Callosobruchus maculatus (F.)

January 2018

Entomotoxic effects of powder and oil from the leaves and seed of Hura crepitans (L.) on Callosobruchus maculatus (F.) was investigated at the Pest Management Laboratory in the Department of Crop, Soil and Pest Management, the Federal University of Technology Akure, Ondo State, Nigeria under prevailing laboratory conditions of 28±3°C temperature and 65 ± 5% relative humidity. The powders from the...

Author(s): Adebayo R. A., Onibon-oje O. O. and Dauda Z.

Effects of water hyacinth (Eichhornia crassipes) on the physicochemical properties of fishpond water and growth of African catfish

January 2018

Water hyacinth (Eichhornia crassipes) is an aquatic plant that has the capacity to absorb nutrients, making it a potential alternative for the management of fishpond water. The effect of this plant on the physicochemical properties of fish pond water and on the growth of African catfish was investigated in this study. Four plastic ponds 2.0×2.0×1.2 m deep were used for the study. Fifteen percent of the...

Author(s): Emmanuel A. Echiegu, Lillian I. Ezeugwu and Samson N. Ugwu

Response of garlic (Allium sativum L.) to vermicompost and mineral N fertilizer application at Haramaya, Eastern Ethiopia

January 2018

Garlic (Allium sativum L.) is an important vegetable crop in Ethiopia. The yield of the crop is often constrained by low and unbalanced nutrient supply in the soil. This study was undertaken to assess response of garlic variety Chelenko I to vermicompost and mineral N fertilizer application on growth and bulb yield of the crop during the 2016/2017 main rainy season. The treatment consists of a factorial combination of...

Author(s): Fikru Tamiru Kenea and Fikreyohannes Gedamu

Performance of maize hybrids under different tillage methods and nitrogen levels

January 2018

A field experiment was conducted at the National Maize Research Program (NMRP), Chitwan, Nepal during summer of 2014 to evaluate the response of tillage methods (conventional and zero tillage) and nitrogen levels (0, 60, 120 and 180 kg ha-1) on grain yield of two maize (Zea mays L.) hybrids (Rampur hybrid-2 and RML32/RML17). The experiment was laid out in strip-split plot design consisting of sixteen treatments with...

Author(s): Roshani Sharma, Komal Bahadur Basnet, Santosh Marahattha and Tika Bahadur Karki

Effects of growth media on rooting of stem cuttings of hybrid coffee varieties

January 2018

The objective of this study was to evaluate the effect of different growth media on rooting of stem cuttings of hybrid coffee varieties. The experiment was conducted on-station under a shade house at Tanzania Coffee Research Institute (TaCRI) from October 2013 to February 2014 using a split plot experiment in a Randomized Complete Block Design (RCBD) with four replications. The main factor consisted of five hybrid...

Author(s): Jeremiah M. Magesa, Theodosy J. Msogoya and Cornel L. Rweyemamu

Animal feeds legislation: Chicken value chain actors practices and predicaments in Uganda

January 2018

This study was conducted to assess the effects of absence of a legal framework regulating the animal feeds industry on poultry value chain actor performance and sustainability. The objectives of the study were to identify the key constraints faced by individual farmers, livestock feed manufacturers, and field veterinary personnel; and assess challenges cutting across the industry actors. Data used in the study were...

Author(s): Nanyeenya W. N., Kabirizi J., Taabu L., Kasadha M. and Omaria R.

No-tillage effect on carbon and microbiological attributes in corn grown in Manaus-AM, Brazil

January 2018

The soil is the most important carbon reservoir, but agricultural practices involved in tillage systems decrease the soil carbon stock. This study aims to evaluate the effect of no-tillage (NT) on carbon and microbiological attributes of the soil in corn plantations in Manaus-AM, Brazil. Soil was sampled in a secondary forest (SF) and in corn grown under different tillage systems, including conventional tillage (CT),...

Author(s): Aleksander Westphal Muniz, Ronielly Hadna da Silva Nunes, Telma Andréa Carvalho Silva, Enilson Luiz Saccol de Sá, Cláudia Majolo, Ana Beatriz Fiuza and José Renato Pereira Cavallazzi

Yield and quality performance of some peach varieties grown under Sanliurfa ecological conditions

January 2018

Peach has a wide range of adaptation to tropical, subtropical and temperate climatic zones around the world, hence is spreading as a fruit species. This study was done in a semiarid climate in Sanliurfa. The phenological, pomological and yield characteristics of 11 peach cultivars (Maycrest, Springcrest, Earlyred, Cardinal, Redhaven, Glohaven, Dixired, Cresthaven, Maria Marta, Elegant Lady and Monroe), were determined....

Author(s): Ali Ä°kinci and Ä°brahim Bolat

Sowing seasons × maturity groups on quantitative traits in soybean

January 2018

The world economic importance of soybean (Glycine max (L).) crop is consolidated, and tests to verify the best sowing season for yield gain of cultivars are demanded. The aim of this study is to analyze the effect of sowing season on soybean cultivars of different maturity groups, since the determination of the optimum time for planting soybeans and the cultivar most suited to the region under study can increase yield...

Author(s): Carla Michelle da Silva, Fábio Mielezrski, Daniela Vieira Chaves, Edivania de Araújo Lima, José Hamilton da Costa Filho and Antônio Veimar da Silva

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