African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 6358

AJAR Articles

Exploring the induction of doubled haploids in cassava through gynogenesis

June 2019

Production and use of double haploids is important for attainment of systematic genetic gains, and indeed several plant breeding programmes have benefited from it.  Gynogenesis, the in vitro culture of unfertilized ovules and/or embryos has specifically been exploited in several economically important crops but not cassava. In this study, we examined possibilities of generating doubled haploids (DH) in cassava...

Author(s): Julius Karubanga Baguma, Robert Kawuki, Ssetumba B. Mukasa, Mary Buttibwa, Polycarp Nalela, Maurine Eyokia, Brenda Oshaba, Zaida Lentini and Yona Baguma  

Gas exchange in upland cotton cultivars under water deficit strategies

June 2019

Aiming to evaluate the gas exchange of upland cotton cultivars cultivated in the Brazilian semiarid, subject to water deficit periods on the phenological stages, an experiment was carried out at the Campina Grande Federal University, Pombal county campus, Paraíba State, Brazil, between June and December 2015. Treatments were formed from a split-plot arrangement, in which the plots were 6 water deficit periods (P)...

Author(s): Whéllyson Pereira Araújo, José Rodrigues Pereira, João Henrique Zonta, Hugo Orlando Carvallo Guerra, Mailson Araújo Cordão and Marcos Eric Barbosa Brito  

Fiber quality in upland cotton cultivars under water deficit strategies

June 2019

An evaluation was made of upland cotton cultivar fiber quality, when subjected to water deficit periods, on the phenological stages. The experiment was carried out at the Campina Grande Federal University, Pombal county Campus, Paraíba State, Brazil, between June and December 2015. Treatments were formed using a split-plot arrangement, in which the plots were 6 water deficit periods (P) (P1 = No deficit; P2 =...

Author(s): Whéllyson Pereira Araújo, José Rodrigues Pereira, João Henrique Zonta, Hugo Orlando Carvallo Guerra, Mailson Araújo Cordão and Robson Felipe de Lima  

Thermal comfort estimation for dairy cows in the south of Goiás State, Brazil

June 2019

The objective of this research was to analyze the correlation between climatic and milk composition variables. Thus, meteorological data and data on milk quality and composition (fat, protein, lactose, total solids content and defatted dry extract (DDE)) were used, as well as somatic cell count (SCC). The analysis was performed using the Pearson correlation test. After the study, it was verified that the temperature...

Author(s): Larissa Mendes Cruvinel, Larissa Christina de Paula, Eliandra Maria Bianchini Oliveira, Tiago Neves Pereira Valente, Mateus Sobral de Araújo, Jeferson Corrêa Ribeiro, and  Wallacy Barbacena Rosa dos Santos,  

Market preferences for cowpea (Vigna unguiculata [L.] Walp) dry grain in Ghana

May 2019

Cowpea is an important crop in Ghana, serving as a major source of calories and high-quality protein for many people. An understanding of market preferences is necessary when targeting research and breeding efforts. This study makes use of data from 562 samples of cowpea dry grain collected from 91 markets across Ghana, analyzed using the hedonic model framework, to determine implicit prices of characteristics,...

Author(s): Ira A. Herniter, Zhenyu Jia and Francis Kusi  

Rhizosphere yeast Torulaspora globosa with plant growth promotion traits and improvement of the development of tomato seedlings under greenhouse conditions

May 2019

Yeasts are an interesting group of microorganisms, which occur naturally in soil and on plant surfaces. Few studies have analysed their potential as plant growth promoters. Thus, the aim of this study was to evaluate the indole acetic acid (IAA) production and phosphate solubilization by the yeasts Torulaspora globosa (CCA5S51 and CCA5S55), Meyerozyma guilliermondii (CCA3C98), and Rhodotorula mucilaginosa (CCA2F32), and...

Author(s): Thais Borges de Oliveira, Rodolfo Bizarria Junior, Luana Godoi Silva and Márcia Maria Rosa-Magri  

Physiological response of colza (Brassica napus L.) seeds coated and treated with alternative materials

May 2019

The coated seeds have multiple advantages in relation to the common seeds. In addition to the increase in size and uniformity in their shape, treatment products can be incorporated in them helping the germination process. Against the foregoing, the objective of this work was to evaluate the physiological quality of the colza (Brassica napus L.) seeds coated with bentonite, gypsum and kaolin and treated with fungicide...

Author(s): Bruno Adelino de Melo, Francisco de Assis Cardoso Almeida, Josivanda Palmeira Gomes, Wilton Pereira da Silva, Inacia dos Santos Moreira, Yvana Maria Gomes dos Santos, Jemima Ferreira Lisboa, Polyana Barbosa da Silva, Semirames do Nascimento Silva and Dalmo Marcello de Brito Primo    

Interactive effects of phosphorus and water stress on plant development and yield resilience in common beans (Phaseolus vulgaris L.)

May 2019

An experiment was conducted to determine the effects of increasing soil phosphorus under water stress conditions on yield and plant development in bean (Phaseolus vulgaris L.) genotypes with contrasting drought susceptibility tolerances. A split-split plot design with genotypes (main plot), two water regimes (split plot) and three phosphorus rates (split-split plot) was used. Water regimes were imposed by irrigating at...

Author(s): Mebelo MATAA#, Kephas MPHANDE# and Kalaluka MUNYINDA    

Improving agricultural productivity on salt-affected soils in Ethiopia: Farmers’ perceptions and proposals

May 2019

This paper presents the results of a baseline study carried out to understand farmers’ perceptions about the existence of salinity in their farmlands and its impact on agricultural production and household food security. The strategies adopted by farmers to deal with the salinity and food insecurity problems are also discussed. The survey data were collected from a total of 300 farmers from five districts of...

Author(s): Asad S. Qureshi, Mulugeta Mohammed, Ashenafi W. Daba, Birhanu Hailu, Getinet Belay, Abeba Tesfaye and Tesfaye M. Ertebo  

Identification of 1-decyne as a new volatile allele-chemical in baobab (Adansonia digitata) from Sudan

May 2019

Leaf, fruit, wood, and gum of fifty-five plants collected in Sudan were evaluated by Dish pack method for their allelopathic activity through volatile chemicals using lettuce (Lactuca sativa) as a receptor plant. Several potential plants with high allelopathic activity, such as Terminalia brownie, Euphorbia hirta, Diospyros mespiliformis, Corchorus olitorius, Adansonia digitata, Hibiscus sabdariffa, were determined....

Author(s): Hala Sad Alla Maliek Elmadni, Maryia Mishyna, and Yoshiharu Fujii,    

Production performance of sunflower genotypes in Campo Novo do Parecis, Brazil´s main producing region of the oleaginous plant

May 2019

Sunflower crops have a wide adaptability to several edaphoclimatic conditions, with possible alternative for a second harvest. Crops are diversified and extra profit is collected by the producer. Current assay determines the agronomic characteristics of the sunflower genotype planted in second harvest in Campo Novo do Parecis MT Brazil, the main sunflower producing region in Brazil. The assay was conducted on the...

Author(s): Flávio Carlos Dalchiavon, Anderson Morais Kimecz, Marcelo Marchesini, Diego Hahn Machado, Wellington Junior Candido da Silva, Rosivaldo Hiolanda and Claudio Guilherme Portela de Carvalho  

Construction and evaluation of soybeans thresher

May 2019

In order to resuscitate soybean production and post-harvest processing, especially in terms of threshing, there is a need to develop an affordable threshing machine, which will reduce drudgery associated with manual soybean threshing. Soybean thresher was fabricated and evaluated at the Institute of Agricultural Research and Training (IAR&T), Apata, Ibadan. The machine component parts includes: hopper, threshing...

Author(s): Adeyeye O. A., Sadiku E. R., Osholana T. S., Reddy A. B., Olayinka A. O., Ndamase A. S., Makgatho G., Selvam P., Perumal A. B., Nambiar R. B., Fasiku V. O., Ibrahim I. D. and Areo K. A.  

Effects of seeds ingestion by Lagune cattle and other pre-planting treatments on the germinability of Centrosema pubescens Benth seeds in Soudanian region of Benin (West Africa)

May 2019

In Benin under extensive management of grassland, there is little information about legumes regeneration and management in pastures. This trial evaluated the germination of Centrosema pubescens seeds after passage through the digestive tract of three young bulls and three heifers of Lagune breed cattle. Following seeds ingestion by cattle, total faeces were collected at 24-h intervals for 6 days after which time the...

Author(s): HOUNDJO Daniel Bignon Maxime, ADJOLOHOUN Sébastien, ADENILE Dourossimi Adam, GBENOU Basile, SAIDOU Aliou, AHOTON Léonard, HOUINATO Marcel, SEIBOU TOLEBA Soumanou and SINSIN Brice Augustin  

Verification of integrated management of chickpea Fusarium wilt (Fusarium oxysporum f.sp. ciceris) in major chickpea growing areas of East Shewa Zone, Ethiopia

May 2019

Fusarium wilt is caused by Fusarium oxysporum f.sp. ciceris, a major limiting chickpea productivity in Ethiopia. The present study was to validate the integrated management of chickpea Fusarium wilt. The verifications were conducted in Adea, Lume and Gimbichu districts. The experiment was laid out as a factorial combination a farmer’s field was used as replications. The management package consists of two varieties...

Author(s): Asrat Zewdie  

Foliar application of zinc sulphate to improve yield and grain zinc content in wheat (Triticum aestivum L.)

May 2019

Foliar application is a promising agronomic strategy as it involves direct adsorption and loading of nutrients from leaf surface to phloem in comparatively far less quantity than soil applications. Present investigation entails the evaluation of most suitable treatment of zinc sulphate to improve growth and yield components of wheat. Significant increase in leaf length, leaf area, plant height, number of tillers, spike...

Author(s): Shehla Noreen and Atif Kamran  

Short-term effect of reducing conventional tillage intensity on some physical and chemical properties of volcanic soils in Rwanda

May 2019

Volcanic soils which comprise a minor portion worldwide are generally characterized by their high natural fertility yet susceptible to soil erosion due to their fragility. Regardless of which, the success in soil management to maintain its quality depends on the understanding of how the soil properties respond to its disturbance through tillage practices over time. This study was conducted in the highland region of...

Author(s): Ernest Uwiringiyimana,, Didier Ngabonziza, Hamudu Rukangantambara and Zhang Dan  

Production components and water efficiency of upland cotton cultivars under water deficit strategies

May 2019

The objective of this work was to study water deficits effect on different phenological phases in the production components and water efficiency of upland cotton cultivars. For this, an experiment was carried out at the Federal University of Campina Grande - UFCG, Pombal county Campus, Paraíba State, Brazil. Treatments were formed from a split-plot arrangement in which plots were 6 water deficit periods (P): (P1...

Author(s): Whéllyson Pereira Araújo, José Rodrigues Pereira, João Henrique Zonta, Hugo Orlando Carvallo Guerra, Mailson Araújo Cordão and Robson Felipe de Lima  

Management of potato leaf miner in Uganda

May 2019

The yield of potato, an important food security and income crop in Uganda is substantially affected by pests. A survey was carried out in south western Uganda, a major potato growing area to assess the distribution and severity of potato pests in June and July 2015. In addition, leaf miner management options such as pesticide use, yellow sticky traps and mulching were evaluated for effectiveness. Trials in leaf miner...

Author(s): Mwesige Rose, Alex Barekye, Etiang Joseph, Kwikiriza Gerald, Uzatunga Innocent and Kyarisiima Sarah  

Determinants of the extent of adoption of maize production technologies in Northern Ghana

May 2019

In spite of substantial investments in developing and disseminating improved maize production technologies by successive governments and several development partners, technology adoption in Ghana remains low. The purpose of this study was to identify the factors that influence the extent of adoption of improved maize production technologies among farmers in northern Ghana. A Tobit regression model was used to analyse...

Author(s): Kwarteng Amaning Theophilus, Aidoo Robert and Sarfo-Mensah Paul  

Market production and productivity: The effects of cash cropping on technical efficiency in staple crop production

May 2019

To meet increasing food demand, most developing countries cannot rely on expanding the crop area, but will need to stimulate yield growth arising from increased factor productivity. This can be achieved through more efficient utilization of inputs to produce maximum output given existing technologies. Low productivity arising from technical inefficiency negatively impacts on household income and food security by...

Author(s): Proscovia R. Ntakyo, Marrit van den Berg and Johnny Mugisha  

Allure of insect pest and diseases among three solanaceous crops viz. tomato, chilli and brinjal in Hamelmalo Agricultural College

May 2019

The experiment was conducted in the Hamelmalo Agricultural College, Eritrea, from January 2017 to May 2017. This was done to study the attraction of major insect pest and diseases in three solanaceous crops (tomato, chilli and brinjal) grown singly and with mix cropping pattern. In Eritrea, solanaceous crops are important vegetables grown in different areas of the country.  Insect pest and diseases are the major...

Author(s): Tufail Ahmad, Syed Danish Yasin Naqvi, Lula Woldu, Tsega Brhane, Yacob Tsegay and  Yemane Haile  

Water use efficiency in the sugarcane cropping in different planting dates in Brazil

May 2019

In global terms, irrigation is a human activity with greater demand for fresh water and strategies are needed to minimize this consumption. Therefore, the objective of this study was to establish the sugarcane planting date, which results in a greater water use efficiency, considering the summer planting of the Northeast region of Brazil. The sugarcane cultivar was RB92579, drip irrigated, and the stage of the plant was...

Author(s): Tatiane Barreto de Carvalho, Ronaldo Souza Resende, Raimundo Rodrigues Gomes Filho, Júlio Roberto Araújo de Amorim, Thais Nascimento Meneses and José V.T. Costa  

Cultivation of cactus pear forage propagated through the method of fractionation of cladode

May 2019

Between the varieties of Cactus Pear Forage resistant to Cochineal Carmine, the Orelha de Elefante Mexicana (OEM), Baiana (BA) and Miúda (MI) were found. The adoption of these varieties and dissemination in the areas damaged by this plague are directly related to provision of seeds cladodes. The method of propagation through fractionation of cladode is an alternative in cases where this availability is deficient....

Author(s): Jucilene Silva Araújo, Washington Benevenuto de Lima, Antunes Romeu Lima do Nascimento, João Batista Taveira De Freitas, Geiziane De Fátima Da Silva, Daniel Duarte Pereira, Múcio Freire Vieira and Geovergue Rodrigues de Medeiros  

Cattle milk production, processing and marketing situations of smallholder farmers in Telo district, Keffa zone, Ethiopia

May 2019

The study was conducted in Telo district of Keffa zone, SNNP Regional State with the aim of assessing milk production and milk use pattern. Cross-sectional study design was used to collect data from randomly sampled 156 households using survey questioner, farm visit and focus group discussion. Female headed farms were more frequent in urban. The average family size per household was 7 persons. 58.3% of HH were...

Author(s): Askale Gebrmichael  

Vegetation cover affects rhizobia-tree legume symbiosis in the semi-arid region of Brazil

April 2019

Biological nitrogen fixation (BNF) is the main form of introducing nitrogen into systems with low fertilizer input, which prevail in the semi-arid region of Brazil. BNF was evaluated in leucena and sabiá grown in samples of a soil collected under different vegetation cover: native vegetation; capoeira (area abandoned for the restoration); agricultural use; sabiá grove; and leucena grove. Nodulation was...

Author(s): Luciana Remígio Santos Nascimento, Ana Dolores Santiago de Freitas, Vinicius Santos Gomes da Silva, Augusto Cesar de Arruda Santana, Aleksandro Ferreira da Silva, Carolina Etienne de Rosália e Silva Santos, Juscélia da Silva Ferreira, Leandro Reis Costa Santos and Jéssica Rafaella de Sousa Oliveira  

Stakeholders’ perception of weaver ant’s effects on mango fruits quality in Benin

April 2019

Weaver ant (Oecophylla longinonda) used in biological control of pest, is said to improve the organoleptic quality of protected fruits. This study aims at bringing out stakeholders’ perception of weaver ants effect on mango quality. A survey was performed in Parakou (Benin), with stakeholders to assess their perception of mango quality and their opinion about weaver ant’s effect on mango quality. Then, the...

Author(s): Hermance Yénoukounmey HOUNGBO, , Florence Mahouton ANATO AFORA, Déley Sylvain DABADÉ, , Antonio SINZOGAN and Paulin AZOKPOTA,  

Prediction of genetic gain using selection indices in maize lines

April 2019

Maize is an important cereal crop in scientific research area and the world economy, where Brazil is one of the leading producers. High production and productivity are partly due to plant breeding programs, where the selection of superior genotypes is based on indexes. This strategy has been very efficient o obtaining superior genotypes since there are simultaneous gains for various agronomic and economic characters....

Author(s): Silviane de Santiago, Claudio Lopes de Souza Junior , Leandro Borges Lemos and Gustavo Vitti Môro  

Physiological response of soybean [Glycine max (L) Merrill] to soil moisture stress

April 2019

This study was done to determine the effects of varying soil moisture regimes on CO2 assimilation of soybean [Glycine max (L.) Merrill] in pots under greenhouse conditions during 2017 and 2018 cropping seasons. The experiment was conducted as a Randomized Complete Block Design (RCBD) in a 4 x 6 factorial treatment arrangement and replicated 3 times. Soil moisture regimes (80, 60, 40 and 20% of field capacity) and...

Author(s): Louis Hortensius Mwamlima, Josephine Pamela Ouma and Erick Kimutai Cheruiyot  

Physiological quality of colza seeds (Brassica napus L.) after coating and seed treatment during storage

April 2019

Seed coating is a technique widely used by growers to increase, standardize and improve seed germination conditions. Despite this, there is lack of information about the physiological quality of coated seeds during storage. The objective of this study is to evaluate the physical and physiological quality of colza (Brassica napus L.) seeds coated with bentonite and treated with fungicide and black pepper plant extract...

Author(s): Bruno Adelino de Melo, Francisco de Assis Cardoso Almeida, Josivanda Palmeira Gomes, Alexandre José de Melo Queiroz, Antonio Jackson Ribeiro Barroso,  Yvana Maria Gomes dos Santos, Wilton Pereira da Silva, Joselito Sousa Moraes, Rosemere dos Santos Silva, and Dalmo Marcello de Brito Primo  

Weed flora survey in field crops of Northwestern Ethiopia

April 2019

A survey was conducted in different field crops of six districts (Chilga, Gondarzuria, Metema, Takussa, Dabat and Dembia) in Northwestern Ethiopia within 2016 and 2017 cropping seasons. The objective of the study was to identify the most important weed species and to determine their frequency, density and uniformity at different altitudes. A quantitative and qualitative method was employed for the enumeration and...

Author(s): Assefa Sintayehu  

Study of diversity in some Moroccan population of saffron (Crocus sativus L.)

April 2019

To study Moroccan saffron germplasm variability relating to different agro-morphological and phenological traits, 969 saffron corms (accessions) were collected from thirteen different sites located in traditional saffron area of Taliouine-Taznakht. The study confirmed a wide range of phenotypic variability within and between populations. The variance analysis revealed that the mother corm weight (MCW), taken as...

Author(s): Soukrat S., Metougui M. L., Gabone F., Nehvi F., Abousalim S. and Benlahabib O.  

Effect of fertilizers amendment on yield and yield components of wheat (Triticum aestivum L.) on acidic soil of Tsegede Highland, Northern Ethiopia

April 2019

A field experiment was carried out during 2012/2013 on acidic soil of Tsegede highlands, Northern Ethiopia to evaluate wheat crop response to different Fertilizers and Liming with four treatments: (1) (No fertilizer), (2) 64 kg/ha Nitrogen+ 150 kg/ha Minjingu organic hyper phosphate fertilizer, (3) 64 kg/ha Nitrogen and 20 kg/ha Phosphorus, and (4) 64 kg/ha Nitrogen and 20 kg/ha Phosphorus + 4.17 t/ha lime were arranged...

Author(s): Gebremedhin Berhe Zenebe  

Rice insect pest management in selected rice irrigation schemes in Morogoro Region, Tanzania

April 2019

This study was conducted in five randomly selected rice schemes in Morogoro region to obtain information on farmers’ knowledge, attitude and practice in respect to management strategies undertaken for controlling insect pests both in rice fields and stores as an aid to reduce crop loss. A total of 150 farmers were randomly selected from 5 villages (30 respondents per village) and interviewed using semi structured...

Author(s): Mdangi M., Muhamba D., Massawe A. W. and Mulungu S. L.  

Evaluation of dry matter yield, yield components and nutritive value of selected alfalfa (Medicago sativa L.) cultivars grown under Lowland Raya Valley, Northern Ethiopia

April 2019

The experiment was conducted at Raya Azebo district, which is located in Southern Tigray, North Ethiopia, with the objective to investigate the highest dry matter yield and herbage nutritive value among the selected alfalfa cultivars.  The experiment was conducted by randomized complete block design with four replications and five cultivars. The experimental cultivars were FG-10-09 (F), FG-9-09 (F), Magna-801-FG...

Author(s): Solomon Wayu and Tesfay Atsbha  

Vulnerability and adaptation strategies to drought and erratic rains as key extreme events: Insights from small scale farming households in mixed crop agro ecosystems of semi-arid eastern Kenya

April 2019

Climate variability and change are some of the most pressing environmental challenges in semi-arid Kenya and Sub Saharan Africa (SSA) and are associated with persistent droughts, dry spells and erratic rains. The present study aimed at determining exposure and adaptation mechanisms among selected small-scale farmers cultivating drought tolerant crops in Wote, Makueni County, Eastern Kenya in the period 2003 to 2013. The...

Author(s): Borona Mwenda, Dionysius Kiambi, James Kungu, Jeske Van De Gevel, Carlo Farda and Yasuyuki Morimoto  

Mechanisms of aerenchyma formation in maize roots

April 2019

Respiration is very sensitive to waterlogged conditions. Under these conditions, plant roots suffer from lack of available oxygen. In fact, waterlogging reduces the exchange of gases between the plant and the atmosphere. When plants cannot receive sufficient oxygen level for respiration, they form aerenchyma in their roots which function as reservoirs of oxygen in the submerged plant. Aerenchyma is formed in maize (Zea...

Author(s): Imene Rajhi and Haythem Mhadhbi  

Yield of the hydroponic lettuce under levels of salinity of the nutrient solution

April 2019

Hydroponic cultivation is a viable alternative, given the water scarcity scenario, since this technique uses water rationally and without waste. However, it is necessary to monitor the salinity of the nutrient solution, especially in leafy vegetables such as lettuce. The aim of this research is to examine the yield of hydroponic lettuce under different salinity levels of the nutrient solution, in greenhouse. The...

Author(s): P. F. Silva, R. M. Matos, S. M. Bonou, T. G. Sobrinho, V. E. Borges, J. Dantas Neto and A. P. Melo Júnior  

A review on golden species of Zingiberaceae family around the world: Genus Curcuma

March 2019

Genus Curcuma has a long history of traditional uses, ranging from folk medicine to its culinary uses. More than 70 species of Curcuma are distributed throughout the world but extensively cultivate in Asian, Australian and Western African counties. Many phytochemical, pharmacological and molecular studies have been conducted on several Curcuma species worldwide. The interest on its medicinal properties have increased...

Author(s): Ewon Kaliyadasa and Bhagya A. Samarasinghe  

Nutritional status of three sugarcane varieties grown in the northeast region of Brazil

March 2019

The diagnosis of plant nutritional status was a tool to improve crop fertilization and thus ensure better productivity. This study aimed to evaluate the nutritional status of three sugarcane varieties (RB92579, RB98710 and RB961552) in the plant-cane and first regrowth cycles in the sub-humid region of the state of Alagoas, located in the Northeast of Brazil. The experiment consisted of a randomized complete block...

Author(s): Daniele Costa de Oliveira, Mauro Wagner de Oliveira, Vinicius Santos Gomes da Silva, Terezinha Bezerra Albino Oliveira, Hugo Henrique Costa do Nascimento and Siglea Sanna de Freitas Chaves  

Mathematical modelling of greenhouse drying of red chilli pepper

March 2019

The purpose of this study was to examine twelve different mathematical models for red pepper plant (Capsicum annum L.) and to investigate the appropriate models of mass fraction (Mt / Mo) in relation to drying time.This study attempted to assess the efficiency and profitability of the drying of red pepper under the plastic tunnel greenhouse and a total of twelve models, including Newton, Page, Improved Page, Henderson...

Author(s): Bekir YELMEN, Çağrı ÜN,  Havva Hande ŞAHİN and  Mert YÜKSEKDAĞ  

A synthesis of Ethiopian agricultural technical efficiency: A meta-analysis

March 2019

In Ethiopia, technical efficiency studies started about three decades ago. These studies have reached different conclusions regarding agriculture efficiency based on technical efficiency scores. This study represents the first attempt to use meta-analysis to examine the mean technical efficiency estimates in agriculture in Ethiopia. The current study employed 45 frontier studies published from 1993 to 2014 for the...

Author(s): Tesfaye Solomon and Tadele Mamo  

Reputation effect of the moral hazard on contract farming market development: Game theory application on rice farmers in Benin

March 2019

A good reputation is the basis for rice farmers to survive and gain trust from buyers in a competitive business environment. However, due to the existence of information asymmetry between buyers and rice farmers, the moral hazard problem is the key obstacle that impedes the benefits of related shareholders and hinders the efficiency of contract farming negotiations. It is crucial to design a control mechanism to avoid...

Author(s): Odountan Ambaliou Olounlade, Li Gu-Cheng, Lacina Traoré, N’banan Ouattara, François Vihôdé Dossouhoui and Gauthier Biaou  

Sorption-desorption isotherms of diuron alone and in a mixture in soils with different physico-chemical properties

March 2019

Herbicide mixture is a widely used weed control practice in many agricultural areas. However, interactions between the herbicide mixture and soil may alter the soil dynamics. This research evaluated the effect of the physicochemical properties of the soils in the application of diuron alone and in a mixture with hexazinone, by means of sorption-desorption Freundlich isotherms. 14C-diuron sorption (isolated and mixed)...

Author(s): Vanessa Takeshita, Kassio Ferreira Mendes, Pedro Jacob Christoffoleti, Valdemar Luiz Tornisielo and Ana Carolina Dias Guimarães  

Phenotypic plasticity in soybean (Glycine max (Merrill)) genotypes with contrasting growth characteristics subjected to planting density stress at different developmental stages

March 2019

A study was conducted to determine phenotype plasticity responses in soybean genotypes subjected to plant density stress at different phenological stages. Plants planted at supra optimal population density (500,000 plants per hectare) were thinned to 400,000 population density at 4 developmental stages: V1 (Full expansion of first trifoliate leaves), V3 (Four nodes with 3 unfolded trifoliates), V6 (Seven nodes, with 6...

Author(s): Mebelo MATAA and Isaac SICHILIMA

Soil hydro-physical attributes under management practices for pineapple genotypes cultivation

March 2019

Pineapple is a rustic species but may respond positively to conservation practices of soil management. This work aimed to evaluate the physical properties of the soil under conservation management practices for the cultivation of pineapple genotypes. The treatments consisted of four varieties of pineapple, two levels of gypsum (0 to 4 t ha-1), two levels of management (with and without cover crop - millet), and two soil...

Author(s): Wanderson Mendes Martins, Leonarda Grillo Neves, Kelly Lana Araújo, Adriel Fernandes Correa, Walmes Marques Zeviani, Bruno Montoani Silva, Leonarda Grillo Neves, Thiago Alexandre Santana Gilio and Milson Evaldo Serafim  

Aries Guineagrass (Megathyrsus maximus Jacq cv. Aries) pasture establishment without chemical control in an environmentally protected area

March 2019

This study aimed to evaluate the Aries Guineagrass (Megathyrsus maximus sin. Panicum maximum Jacq. cv. Aries) and the weed community dynamics under different soil tillage and sowing methods in Southern Brazil, to create alternatives for sustainable farming in areas where weed chemical control is restricted. The experiment was carried out in split-plot design with randomized blocks and four replications; the main plots...

Author(s): Carlos H. G. Coimbra, Sebastião B. C. Lustosa, Leonardo Deiss, Anibal de Moraes, Edilson B. de Oliveira and Alda L. G. Monteiro  

Foodborne diseases, fish and the case of Aeromonas spp.

March 2019

Food intake is an imperative need of living beings in order to obtain the nutrients and energy necessary for their growth and development. All human beings worldwide have the right to access to nutritious and safe food. Food safety is a term that has become increasingly important in food production; is defined as the set of conditions and actions necessary along all phases of the food chain (from its primary production...

Author(s): Alejandro De Jesús Cortés-Sánchez, Luis Daniel Espinosa-Chaurand, Rodolfo Garza-Torres, Mayra Diaz-Ramirez, Ma. De La Paz Salgado-Cruz, Lilia Sánchez-Minutii  and Raquel García-Barrientos  

Application of nitrogen in different phenological states of the corn crop

March 2019

Corn is a crop of high productive potential, but to achieve this, it is essential to apply production technologies, especially fertilizers with a high level of nitrogen. The objective of this work was to evaluate the influence of nitrogen fertilizer in different phenological stages on corn production. The experiment was installed in the experimental plot of the Facultad de Ciencias Agrarias, Universidad Nacional de...

Author(s): Eulalio Morel López, Florencio David Valdez Ocampo, Amílcar Isidro Servín Niz, Modesto Osmar Da Silva Oviedo, Oscar Caballero Casuriaga, Wilfrido Lugo Pereira, Derlys Fernando López Ávalos, Carlos Alberto Mongelos Barrios, Edith Ruiz Díaz and Ruth Ester Pistilli  

Effects of biogas slurry and conventional fertilizer on the abundance, diversity, and function of the soil microbe community in continuously cropped Chinese chives

March 2019

The effects of biogass slurry and conventional chemical fertilizer as topdressings on relative abundance and community diversity of soil microbes in fields under continuous cropping of Chinese chives were investigated. It was found that topdressing treatment altered soil bacteria community and diversity, where relative abundance and taxonomic diversity were greater in the biogas slurry treatment. Although average well...

Author(s): Fengling Guo, Jinping Wu, Zhenbiao Jiao, Jie Zhou, Jiaping Fu, Qinglin Li and Zhengming Qiu  

Development and technical validation of spray kit for coffee harvester

March 2019

Spraying a coffee plantation simultaneously with harvesting ensures that the coffee plants are protected from pests and diseases, which are intensified during this period. In addition to economical operation, the pulverizer adapted to all harvester models promotes greater uniformity in pulverized syrup dispensing since the spray tips are arranged evenly around the plant. Two experiments were carried out in the...

Author(s): Felipe Santinato, Carlos Diego da Silva, Rouverson Pereira da Silva, Antônio Tassio Silva Ormond, Victor Afonso Reis Gonçalves and Roberto Santinato  

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