African Journal of
Agricultural Research

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

AJAR Articles

August 2018

Physical characteristics of colza seeds treated and coated with different filling materials

The knowledge about the physical characteristics of seeds, whether coated or not, is essential for the design of machines and equipment. Therefore, the objective of this work was to determine the physical characteristics of colza (Brassica napus L.) seeds coated with bentonite, gypsum and kaolin, treated with fungicide (carboxin + thiram) and aqueous extract of black pepper (Piper nigrum L.). The untreated colza seeds...

Author(s): Bruno Adelino de Melo, Francisco de Assis Cardoso Almeida, Wilton Pereira da Silva, Josivanda Palmeira Gomes, Juliana Ferreira da Silva, Antonio Jackson Ribeiro Barroso, Jaime José da Silveira Barros Neto, Semirames do Nascimento Silva and Polyana Barbosa da Silva

August 2018

Yield and water use efficiency of cauliflower under irrigation different levels in tropical climate

The aim of the present study is to assess the effects of different irrigation blades on the growth and yield of cauliflower cv. Verona CMS. The plants were cultivated in Red-yellow Latosol during the dry period (winter-spring 2014 and 2015), in the Cerrado-Amazon transition region, Middle-Northern of Mato Grasso State, Brazil. The reference evapotranspiration (ETo) was recorded through the Class A pan method by using...

Author(s): Adilson Pacheco de Souza, Andréa Carvalho da Silva, Adriana Aki Tanaka, Manoel Euzébio de Souza, Mariana Pizzatto, Rafaella Teles Arantes Felipe, Charles Campoe Martim, Brena Geliane Ferneda and Suzana Grassi da Silva  

August 2018

Comparative analysis of antioxidant activities of different varieties of mangos with some selected fruits

Natural antioxidants and secondary metabolites found in vegetables and fruits play significant role in human health. The juices obtained from fruits and vegetables are more convenient to consume than fresh vegetables and fruits. In the current study, the total phenolic, vitamin C, total carotene and B-carotene content and antioxidant activity of fruits and vegetables juices were determined by 1,1-diphenyl-2picryl...

Author(s): Abdul Ghani Dars, Kai Hu,  Aqleem Abbas  Yashu Chen, Ashfaque Ahmed Khaskheli, Qiudou Liu, Xiaopeng Li, Mamoun A Homaida, Allah Bakhsh Javaid Lakho, Bijun Xie  and Zhida Sun  

August 2018

Evaluation and differential expression of genes conferring drought tolerance in selected maize genotypes in the Morogoro Region of Tanzania

Experiments were conducted at Sokoine University of Agriculture in Morogoro, Tanzania to assess the growth performance and grain yield of ten maize cultivars under well-watered and water stressed conditions. The ten cultivars (CML 444, CML395, CML539, WE 4107, WE 2112, WE 3102, WE 4112 and WE 4116) obtained from Water Efficiency Maize for Africa (WEMA) project and two local market cultivars (‘STAHA’ and...

Author(s): Gertrude G. Kanyairita, Desmond G. Mortley, George T. Muhamba, Marceline Egnin and Conrad K. Bonsi  

August 2018

A clue for generating a new leucine-rich repeat gene in maize

Plant leucine-rich repeat (LRR) proteins play an important role in cell adhesion and signaling, neuronal development, disease resistance response and pathogen recognition. Therefore, the origin and evolution of the LRR genes had been studied deeply. However, there were no evidence of generating new LRR genes. In this study, the genomic and amino acid sequences of the LRR genes or proteins were aligned based on Maize GDB...

Author(s): Zheng Yang and Kui Xiang  

August 2018

Evaluation of different methods to control invasive alien grass weeds in a degraded area

The objective of this study was to evaluate the efficiency of different methods of exotic grass control in a degraded area in the urban area of Diamantina, state of Minas Gerais, Brazil. The experiment was carried out in a randomized block design, with the following methods of control of invasive grasses: T1) manual; T2) mechanical; T3) chemical; and T4) chemical + mechanical. After one hundred days, regenerants of...

Author(s): Leonardo Palhares da Silveira, Danielle Piuzana, Israel Marinho Pereira, Bruno Oliveira Lafetá and José Barbosa dos Santos  

August 2018

Analysis of energy input-output of irrigated rice production in Jere Bowl Borno State, Nigeria

The study analyzed energy input-output of irrigated rice production at the Jere Bowl Borno State, Nigeria. One hundred and thirty farms were sampled through multistage sampling procedure. The data collected were analyzed using descriptive statistics and energy equations. The result showed that total of 36,397.85 MJ/ha of energy was consumed in the irrigated rice production with the highest energy input taken up by...

Author(s): Muhammad Wakil, Abubakar Ibrahim, Abba Sidi Shehu Umar and Grema Bukar  

August 2018

Screening of local and improved bean varieties for resistance to halo blight disease

The study was conducted to screen local and improved bean varieties for resistance to halo blight disease caused by Pseudomonas syringae pv. phaseolicola. A total of eight improved (Sokoine University of Agriculture (SUA) 90, Rojo, Zawadi, Mshindi) and local (Mwasipenjele, Masusu, Kabhaya, Mabula) bean varieties were collected from breeders at SUA and farmers at Ileje district in Songwe region. Isolation of P. syringae...

Author(s): Andekelile Mwamahonje  

August 2018

Intercropping in Zimbabwe conservation agriculture systems using a farmer-participatory research approach

Smallholder farmers in sub-Saharan Africa (SSA) are under increasing pressure due in part to climate change and soil degradation, with many farming households unable to achieve even basic food self-sufficiency. Conservation Agriculture (CA) is a possible solution to these challenges, but the lack of sufficient biomass for mulch has limited wide-scale adoption, and many farmers who practice CA resort to adding...

Author(s): M. Salomons, A. Braul, L. Jazi and M. H. Entz  

August 2018

Response of maize (Zea maysL) inbred lines to different herbicide combinations

A field experiment was carried out at Agricultural Seed and Services Research Station in Zimbabwe to evaluate the response of maize inbred lines to different herbicide combinations. The trial was laid out in a 5×12 split plot design replicated three times. Herbicide combination was main plot factor with five levels; Hand-hoeing;metolachlor+ atrazine;metolachlor+ atrazine+ nicosulfuron; metolachlor+ atrazine+...

Author(s): Nyasha Sakadzo, Kasirayi Makaza, Ignatius Chagonda and Jimmy Shanangura, and Tafadzwa T Haripo  

August 2018

Sustainable land management and ecological service assessment in Northwest of China: Case study of Yanchi, People’s Republic of China

This research aims to assess the driving factors hindering the effectiveness of these protected areas implemented to counter land degradation and evaluate the services provided by these ecosystems in the North West of China. With Ningxia province, Yanchi County chosen as experimental research area, preferential sampling technique was used with 50 plots of (quadrat) laid for plant community characteristics survey...

Author(s): Kossi Fandjinou, Kebin Zhang, Fousseni Folega and Xiaohui Yang  

August 2018

Technology transfer and anthropotechnology: An analysis of the sugarcane harvesting in Australia and Brazil

The present paper conducts a comparative analysis of the operation of sugarcane harvesting machines in their original place of design (Australia) and in a recipient country of this technology (Brazil). The method comprised Ergonomic Work Analysis (EWA) and the assumptions of anthropotechnology proposed by Wisner. The results achieved depict the similarities and differences between the two countries regarding: (a) the...

Author(s): Lidiane Regina Narimoto and João Alberto Camarotto  

August 2018

Rainfall variability and its implications for agricultural production in Gedarif State, Eastern Sudan

Rainfed agriculture is practiced in the central clay plains of Sudan and is affected by the high rainfall variability in time and space within and between seasons. This study focused on analyzing rainfall variability and trend using a 30-year record (1985-2014) of seven meteorological stations at the major agricultural production areas in Gedarif state in eastern Sudan. Yearly rainfall has relatively low variability...

Author(s): Lotfie A. Yousif, Abdelrahman A. Khatir, Faisal M. El-Hag, Ahmed M. Abdelkarim, Hussain S. Adam, Abdelhadi A. Wahab, Yasunori Kurosaki  and Imad-eldin A. Ali-Babiker,  

August 2018

Effect of cutting height on nutritional characteristics of three agroforestry tree legume species and their feed supplement value on Chloris gayana Kunth.

This study investigated the effect of cutting height (30 and 100 cm) on chemical composition and in vitro digestibility in field-grown Acacia angustissima (Mill.) Kuntze. (Prairie acacia), Leucaena pallida Britton & Rose (guaja) and Mimosa scabrella Bentham. (bracatinga) legumes and their value in supplementing a basal diet of Chloris gayana Kunth. (Rhodes grass). Cutting height did not affect major chemical...

Author(s): Marguerite Mukangango, , Ewa Wredle, Mupenzi Mutimura and A. Sigrun Dahlin  

August 2018

Population dynamics of white mango scale, Aulacaspis tubercularis Newstead (Hemiptera: Diaspididae) in Western Ethiopia

Mango (Mangifera indica L.) is the third most important fruit crop in the tropics following citrus and banana. It is consumed as a fresh fruit and different forms of preparations for its multifaceted nutritional values. Mango production in Ethiopia is constrained by infestation of white mango scale (WMS), Aulacaspis tubercularis Newstead. White mango scale was recorded from Ethiopia for the first time in 2010, in a...

Author(s): Ofgaa Djirata, Emana Getu and Kahuthia-Gathu Ruth    

August 2018

Influence of markets on fish farming adoption: The case of Chingale in Malawi

The challenges constraining the contribution of aquaculture to food security and household incomes have mostly been documented as low utilization of improved feed, lack of improved seed and unfriendly financing services. This study looked at the influence of markets including market information on adopting aquaculture technologies. Data were collected from 110 farmers in Zomba District, Malawi. Using a logit model,...

Author(s): Regson Chaweza and Joseph Nagoli  

July 2018

“Climate change perception and adaptation strategy associated with farming techniques in Tamou district wester Niger” farmers

The variability of climate parameters in most of agricultural areas in Niger represents a major risk for farmers. This work is aimed at analyzing farmer’s perception and adaptation to climate change parameters in Tamou district. The study was conducted on seventy three (73) millet farmers from seven villages in Tamou, namely Allambaré, Bani Guiti, Guieme, Tollondi , Moli Haoussa and Welgorou. The sample was...

Author(s): Mamane Baragé, Baragé Moussa and Jacques Comby  

July 2018

Cowpea response to nutrient application in Burkina Faso and Niger

Cowpea (Vigna unguiculata (L.) Walp) is important in semi-arid West Africa. Yields are low due to inadequate water and nutrient availability and other constraints. Grain and fodder yield responses to nutrient application were determined from 21 site-years of research conducted in the Sahel and Sudan Savanna. The incomplete factorial treatment arrangement varied by country but included: Four levels each of P and K in 7.5...

Author(s): Idriss Serme, Nouri Maman, Maman Garba, Abdoul Gonda, Korodjouma Ouattara, and Charles Wortmann  

July 2018

Cultivation of watermelons submitted to water deficit in the experimental area of Brazilian semiarid

The culture of watermelon is mostly responds to technological advancement. The fruit is analyzed in terms of its production and quality. Among the factors involved in its production, irrigation is very important; however it must be well managed. There are phases of the culture that requires greater or lesser amount of water for maximum productivity and high quality. In this context, the present research was conducted to...

Author(s): N. N. Veras, V. L. A. Lima, M. Valnir, J. Suassuna and V. F. Silva  

July 2018

Humic acids and brassinosteroid application effects on pineapple plantlet growth and nutrition during the aclimatization phase

Humic acid and brassinosteroid applications may be an alternative to decrease the pineapple plantlet acclimatization in in vitro cultivation, since promising results have been observed when these substances were independently applied in other propagation methods. In this sense, the aim of the present study was to evaluate the effects of humic acids and brassinosteroid application on 'BRS Vitória'...

Author(s): Paulo Cesar dos Santos, Almy Junior Cordeiro de Carvalho, Mírian Peixoto Soares da Silva, Diego Alves Peçanha, Aurilena de Aviz Silva, Tiago Massi Ferraz and Marta Simone Mendonça Freitas  

July 2018

Thorn apple (Datura stramonium L.) allelopathy on cowpeas (Vigna unguiculata L.) and wheat (Triticum aestivum L.) in Zimbabwe

Datura stramonium extracts have allelopathic properties. The study was conducted to investigate the allelopathic effects of D. stramonium weed on seed germination, early seedling growth and dry biomass of crop plants (Triticum aestivum and Vigna unguiculata). Laboratory and greenhouse trials were arranged as completely randomised design and the field pot experiment was arranged as a randomised complete block design....

Author(s): Nyasha Sakadzo, Pahla Innocent, Muzemu Simbarashe, Mandumbu Ronald and Makaza Kasirayi  

July 2018

Analysis of coffee quality along the coffee value chain in Jimma zone, Ethiopia

This study assesses the effect of cooperative, certification, private trader, farmers, sorting and processing methods on Arabica coffee quality. Coffee samples were collected from certified cooperatives, non-certified cooperatives, private traders and farmers (members of certified cooperatives, non-certified cooperatives and non-members of cooperatives). The study showed that coffee beans sampled from cooperatives had...

Author(s): Kassaye Tolessa, Luc Duchateau and Pascal Boeckx  

July 2018

Sensor-based algorithms to improve barley nitrogen efficiency in Queensland

The low efficiency of nitrogen (N) fertilizers impels the innovation of current N management strategies in cereal production. Site specific N management is an emerging field providing novel alternatives to current nutrient management practices through canopy sensing. Barley N use efficiency can be enhanced with GreenSeeker proximal sensors, whose optimal utilization requires algorithms. The design of such algorithms...

Author(s): Paul Theophile Epee Misse, and Madan Gupta  

July 2018

Screening of cowpea (Vigna unguiculata (L.) Walp.) lines for resistance to three Aphids (Aphis craccivora Koch) strains in Burkina Faso

Cowpea (Vigna unguiculata L. Walp.) is an important cash, food and nutritional security grain legume crop in the semi-arid regions of sub-Saharan Africa. However, its productivity is hampered by several biotic stress factors including numerous insect pests that infest and damage the crop at all its development stages in the field as well as during storage. This study sought to identify new sources of resistance to...

Author(s): Adelaїde P. Ouédraogo, Benoit J. Batieno, Fousseni Traore, Jean-Baptiste Tignegre, Bao-Lam Huynh, Philip A. Roberts, Timothy Close and Jeremy T. Ouédraogo  

July 2018

Technical efficiency and yield gap of smallholder wheat producers in Ethiopia: A Stochastic Frontier Analysis

Improving technical efficiency of smallholder farmers is one of the options to increase wheat yield in developing countries. This paper assesses technical efficiency, factors for inefficiency and the yield gap due to technical inefficiency in major wheat producing regions of Ethiopia, where the support to agricultural research for development of strategic crops (SARD-SC) wheat project has been implemented using primary...

Author(s): Tadele Mamo, Wudineh Getahun, Ali Chebil, Agajie Tesfaye, Tolessa Debele, Solomon Assefa and Tesfaye Solomon  

July 2018

Direct shoot regeneration from hypocotyl explants of Heracleum candicans Wall: A vulnerable high value medicinal herb of Kashmir Himalaya

Heracleum candicans belongs to the family Apiaceae, and is categorized as a vulnerable Himalayan medicinal herb. Due to its diverse chemical constituents it is having an increased demand in pharmaceutical industries, especially in international market. This herb is commercially useful as a major source of Xanthotoxin which is widely used to treat leucoderma and to prepare suntan lotions. During the present study direct...

Author(s): Mahroofa Jan, Seema Singh, Farhana Maqbool and Irshad Ahmad Nawchoo  

July 2018

Use of millimeter ruler as an alternative tool in the phenotyping of potential descriptors of soybean

The soybean stands out in the Brazilian agribusiness and part of this success stems from the development of improved cultivars. One of the requirements for the concession of protection to a given cultivar is that it should be distinct from others cultivars. Potential additional descriptors of soybean have been studied. Thus, the aim of this study was to evaluate the performance of the millimeter ruler in the measurement...

Author(s): Ronaldo Machado Junior, Guilherme Ferreira Alves, Victor Afonso Reis Gonçalves, Sylas Clemente Oliveira, Ronaldo Silva Gomes, Paulo Roberto Cecon, Silvana da Costa Ferreira and Eder Matsuo  

July 2018

Screening for resistance to Striga gesnerioides and estimation of yield loss among Cowpea (Vigna unguiculata (L.) Walp.) progenies in the Upper East Region of Ghana

Parasitic weed Striga gesnerioides (Willd.) is one of the major constraints of cowpea production. Host-plant resistance seems to be efficient and economical in controlling the pest. The objectives of this study were to evaluate recombinant inbred lines developed between IT97K 499-35 (Striga resistant parent,) and Sanzi (susceptible parent), by Single Seed Descent (SSD), for Striga resistance in Northern Ghana. The study...

Author(s): Leandre, S. P., Francis, K., Richard, A., Joseph, B., Jean Baptiste T, Jeremy T. Ouedraogo, Patrick A., Timothy J. Close and Philip A. Roberbs

July 2018

Cultivation of common bean with the application of biochar of ouricuri (Syagrus coronata (Mart) Becc.) endocarp

Biochar has attracted the attention of the scientific community due to its promising applicability and contribution to the elevation of soil chemical and biological aspects, directly influencing the microbiota, fertility levels and yield of agricultural crops. The objective of this study is to determine the chemical and biological attributes of an acrisol cultivated with beans and submitted to the application of...

Author(s): Felipe Alexandre Tenório, Abel Washington De Albuquerque, Tania Marta Carvalho Dos Santos, João Inácio Soletti, Ferdnando Mariano Brito Silva and Karoline De Melo Padilha  

July 2018

Greenhouse gas emissions from an alkaline saline soil amended with urea: A laboratory study

Soil of the former lake Texcoco is nitrogen (N) depleted, so any attempt to vegetate the area will require the application of an N fertilizer. Urea is commonly used as fertilizer, but its application to soil might affect emissions of greenhouse gases (GHG), such as carbon dioxide (CO2), nitrous oxide (N2O) and methane (CH4), and the high pH and electrolytic conductivity (EC) in the Texcoco soil might inhibit the...

Author(s): César Valenzuela-Encinas, Leslie Elizalde Contreras, Rocio J. Alcántara-Hernández, Marco Luna-Guido, Olivia Franco-Hernández, Víctor M. Ruíz-Valdiviezo, Luc Dendooven and Rodolfo Marsch  

July 2018

Climbing beans in Uganda: A perspective of smallholder farmers on their determinants, associated challenges and implications for research

In many parts of the world including Uganda climbing beans are mostly grown in highland areas where population density is high and land is limiting. The objective of this study was to contribute to understanding the current status of the factors affecting productivity of climbing beans among smallholder farmers in Uganda. Kisoro and Kabale districts in the South West were selected for the study. Primary data was...

Author(s): Rose Takusewanya, Annet Namayanja, Michael Adrogu Ugen, Stanley Nkalubo,Thomas Lapaka Odong and Godfrey Vianney Bwogi  

July 2018

Agriculture and food security under threat of change climate in Benin

Vulnerability of agriculture to climate change has been a key issue due to its negative effect on human survival. This study aims to determine the effect of climate change on the production of crops to draw the attention of plant breeders on the paramount necessity to breed new varieties that are tolerant to abiotic stress (drought, temperature, salinity and flooding) for the happiness of farmers. Data on the...

Author(s): Vincent Ezin, Ibouraïma Yabi, Emeric G. M. Kochoni and Adam Ahanchédé  

July 2018

Assessment of soil characteristics under four cropping and land management systems in south west Nigeria

Soil degradation and desertification pose a major threat to agricultural production in sub-Saharan Africa. The influence of cropping systems which had been established on selected physical and chemical properties of soil were investigated in Akinyode-Okinni community in Egbedore Local Government Area (LGA) of Osun State, Nigeria. The cropping systems included agri-silviculture (SCM), silvi-pasture (SPC),...

Author(s): Wasiu Agunbiade Lamidi, Onyegbula Chike Nwoke and Kabiru Alani Shittu  

June 2018

Benefits of grass-legume inter-cropping in livestock systems

Legumes (Fabaceae) are plants with the distinct ability to fix atmospheric nitrogen, the atmospheric nitrogen fixation by legumes is known as biological nitrogen fixation. Biological nitrogen fixation is the process whereby atmospheric nitrogen is reduced to ammonia in the presence of the enzyme nitrogenase. Nitrogen fixation in legumes starts with the formation of nodules. Inside the nodules, nitrogen fixation done by...

Author(s): Unathi Gulwa, Nobulungisa Mgujulwa and Solomon T. Beyene

June 2018

In support of a well-planned intercropping systems in south eastern soils of Nigeria: A review

Soil is the medium for all crop production activities and many of the tropical soils especially soils of South Eastern Nigeria show nutrient deficiency problems after only a short period of cultivation because of the fragile nature and prevailing environmental condition. Land available for further crop production purposes in this area is very limited. To offset some of these problems and boast crop production and yields...

Author(s): Nweke I. A.  

June 2018

Adaptability and genotype-environment interaction of finger millet (Eleusine coracana (L.) Gaertn) varieties in North Eastern Ethiopia

An experiment was conducted to study the adaptability and genotype × environment interaction of finger millet varieties in the north eastern part of Ethiopia. Eight finger millet varieties and a local check were tested at Sirinka, Kobo, and Jari in 2013 and 2014 cropping season. The experiment was laid out in a randomized complete block (RCB) design with three replicates. The result showed that the year 2013 was...

Author(s): Mulugeta Mamo, Fisseha Worede, Yemata Bezie, Solomon Assefa and Tsegaye Gebremariam  

June 2018

Characteristics of three morphotypes of Solenostemon rotundifolius [(Poir.) J. K. Morton] based on qualitative morphological traits

Solenostemon rotundifolius [(Poir.) J. K. Morton] (Lamiaceae) is commonly called Fabirama, Frafra potato or Innala. It is a tuber crop cultivated in many countries in Africa and Asia. Its tubers contain significant rate of carbohydrates, proteins, fibers, vitamins and antioxidants. Besides its nutritional attributes, S. rotundifolius has also strong agronomic and economic potentialities and could be financially...

Author(s): Romaric, K. Nanema, Pauline Bationo-Kando, Mahamadi Hamed Ouedraogo, Nerbewendé Sawadogo, Daniel Nyadanu, Aminata Hamidou, Renan Ernest Traore, Zakaria Kiebre, Mahamadou Sawadogo and Jean-Didier Zongo  

June 2018

Appropriate planting dates and plastic mulch for increasing common tomato varieties yield in South Texas

In South Texas, most of tomato (Lycopersicon esculentum Mill.) crops are produced on plastic mulch due to the elevated temperatures and solar radiations. The study objectives were to; determine the suitable planting dates for increasing tomato varieties production under different planting dates in early spring and late winter, and evaluate the influence of using the plastic mulch (black and white. In the Spring season,...

Author(s): Elsayed-Farag S., Anciso J., Marconi C., Avila C., Rodriguez A., Badillo-Vargas I.E., and Enciso J.,

June 2018

The complex distribution of plantain cultivars (Musa sp., AAB subgroup) in the Bas-Uele province of the Democratic Republic of Congo

Plantain is one of the most important sources of food in the African lowlands stretching from the lowlands of Guinea and Liberia to the central basin of the Democratic Republic of Congo (DR Congo). Because plantain cultivars do not produce seeds, plantain cultivation is based on vegetatively transplanted lateral shoots/suckers. The way by which plantain reached the African continent is still under speculation. The aim...

Author(s): Joseph Komoy Losimba, Joseph Adheka Giria, Benoît Dhed’a Djailo, Deborah Karamura, Guy Blomme, Rony Swennen, , and Edmond De Langhe

June 2018

The effects of drought on rice cultivation in sub-Saharan Africa and its mitigation: A review

Drought is the primary cause of yield loss in agriculture throughout the world, and is currently the most common reason for global food shortages. Three-quarter of the most severe droughts in the last ten years have been in Africa, the continent which already has the lowest level of crop production and drought adaptive capacity. The increased incidences of drought and erratic rainfall have thrown small holder farmers in...

Author(s): Ndjiondjop Marie Noelle, Wambugu Peterson Weru, Sangare Jean Rodrigue and Gnikoua Karlin

June 2018

Integrating crop and livestock in smallholder production systems for food security and poverty reduction in sub-Saharan Africa

The resource base that ensures food supply and the socio-economic component which depends on this resource base are the two major components that make up the food system in sub-Saharan Africa. The sequence of the food system is organized in a spatial flow framework of biomass base. The components of rural production system consist of food production biomass at homestead and farm level, and often at the communal base...

Author(s): Asrat Guja Amejo, Yoseph Mekasha Gebere and Habtemariam Kassa

June 2018

Evaluation of new papaya hybrids

To augment a narrow genetic base in papaya, this study aimed to evaluate the performance of new hybrids produced by Caliman Agrícola® S.A. The experiment was carried out in a randomized complete block design, with 12 treatments four replications and ten plants per plot. The treatments were the variety THB and the hybrids were CR1 × São Mateus, CR1 × 72/12, CR2 × São Mateus, CR3...

Author(s): Adriel Lima Nascimento, Alan de Lima Nascimento, Omar Schmildt, Karina Tiemi Hassuda dos Santos, Renan Garcia Malikouski, Rodrigo Sobreira Alexandre, Laercio Francisco Cattaneo, José Augusto Teixeira do Amaral, Márcio Paulo Czepak, Geraldo Antônio Ferreguetti and Edilson Romais Schmildt  

June 2018

Patterns of pre-weaning piglet mortality and economic losses in field condition

The study was purposively taken up with the objective to find out the patterns of pre-weaning piglet mortality and economic losses in field condition. The study was purposively taken up in Gorkhaland Territorial Administration area where pig farming is a common practice. The study shows that overall pre-weaning piglet mortality was 15.62% where it was slightly higher in exotic than indigenous breed. Highest pre-weaning...

Author(s): Roy R., Mondal T. and Moktan M. W.

June 2018

Performance of maize hybrids from a partial diallel in association with Azospirillum

One of the most prominent strategies to increase maize grain yield with a higher benefit/cost ratio and a lower environmental impact is the inoculation of plant growth-promoting bacteria. Among other factors, the success of the interaction plant-microorganism depends on genetic traits, therefore, selection of plant genotypes compatible with this association is extremely important to the viability of this technology....

Author(s): Alessandra Koltun, Alana Padia Cavalcante, Karla Bianca de Almeida Lopes, Matheus Dalsente Krause, Thiago Pablo Marino, André Luiz Martinez de Oliveira and Josué Maldonado Ferreira

June 2018

Microbial diversity as a soil quality indicator in agroecosystems in Brazilian Savannas

The importance of sustainable use of natural resources, especially of soil and water, has been a subject of increasing relevance. The increase of human activity in ecosystems has great impact on the dynamics of soil organisms. The comparison between cultivated systems and native areas without anthropic interference can be used as soil quality index. Microorganisms are ideal indicators because they are very sensitive to...

Author(s): Moura, Jadson Belem de, Ventura, Matheus Vinicius Abadia, Vieira Junior, Wagner Gonçalves, Souza, Rodrigo Fernandes, Lopes Filho, Luiz Cesar, Braga, Ana Paula Maciel, Matos, Diogo Jânio de Carvalho and Rocha, Elivan Cesar Vieira

June 2018

Is quantitative genetics still necessary in this age of genomics?

Quantitative genetics and genomics are two different disciplines that have separate evolutions. The quantitative genetics has enormous applications and has contributed a lot in four main distinct fields of plant breeding, animal breeding, evolutionary genetics and human genetics. This field is based on study of inheritance patterns and their underlying mechanisms using biometrical or statistical methods. The analysis of...

Author(s): Rukundo Placide, Karangwa Patrick and Uzayisenga Bellancille

June 2018

Efficiency of pre-inoculation of soybeans with Bradyrhizobium up to 60 days before sowing

The inoculation of nitrogen-fixing bacteria in soybean crops allows the achievement of high crop yield by reducing or eliminating the application of nitrogen fertilizers. Pre-inoculation of seeds can reduce costs and increase the efficacy of this agricultural practice. The objective of this study was to assess the efficacy of pre-inoculation of soybean seeds with a commercial inoculant of Bradyrhizobium (RIZOLIQ...

Author(s): Gabriela Silva Machineski, Andrea Silva Scaramal, Maria Aparecida de Matos, Oswaldo Machineski and Arnaldo Colozzi Filho

June 2018

Effect of seed rate on upland cotton (Gossypium hirsutum) seedling emergence

The most important factor to achieving profitable cotton yields is obtaining a uniform stand of healthy and vigorously growing seedlings. Cotton seedling emergence highly depends on the number of seeds that are planted on the same planting station. The cotton seedling stalk is weak and may fail to push up and crack the soil in order to emerge. Therefore several seedlings put together may use the power of numbers to push...

Author(s): Gwiranenzara C., Chapepa B., Mubvekeri W. and Kutywayo D.

June 2018

Soil organic carbon stock under different land use types in Kersa Sub Watershed, Eastern Ethiopia

Understanding and assessing soil organic carbon stock (SOCS) within the framework of greenhouse gas emissions and land degradation is so crucial in combating climate change and enhancing ecological restoration. The goal of this study was to quantify the current SOCS in major land use types in Kersa sub watershed, eastern Ethiopia. Replicated soil samples from 0 to 20, 20 to 40, and 40 to 60 cm depth were collected from...

Author(s): Yared Mulat, Kibebew Kibret, Bobe Bedadi and Muktar Mohammed

June 2018

What factors influence performance of farmer groups? A review of literature on parameters that measure group performance

Farmers form and participate in groups in order to benefit socially and economically through collective activities. However, membership in groups alone is not enough to facilitate improvement of livelihoods, owing to the fact that only successful groups would be able to fully exploit their potential and meet the interests of their members. Understanding group performance is therefore a pertinent issue among social...

Author(s): Sheilla Jeruto Tallam

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