African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 6401

AJAR Articles

Genotype×environment interaction and stability analysis of soybean genotypes for yield and yield components across two locations in Nigeria

November 2019

A multilocational evaluation of 20 soybean genotypes was conducted in two distinct locations (Nsukka in Derived Savanna agro-ecology and Jalingo in northern Guinea Savanna) of Nigeria in 2015 and 2016 cropping seasons. The main objective of this study was to assess the genotype-by-environment interaction (G x E) for specific traits such as number of pods, pod weight, seed yield and yield stability. The results revealed...

Author(s): Jandong, E. A., Uguru, M. I. and Okechukwu, E. C.  

Evaluation of yield and yield components of some groundnut genotypes under rainfed condition in Mali using biplot analysis

November 2019

Sixteen groundnut genotypes were evaluated under three different environmental conditions of Mali during 2015/2016 rainy season. The environments were Tioribougou, Djijan and Samanko affiliated at International Crops Research Institute for the Semi-Arid Tropics (ICRISAT). The experiments were conducted in a 2×8 alpha lattice with three replications. Within the environment, the main effect of a genotype was...

Author(s): Ousmane Sanogo, Pangirayi B. Tongoona, Kwadwo Ofori, Samuel K. Offei and Haile Desmae  

Biochemical characterization of four less exploited edible fruits in Congo-Brazzaville: Passiflora edulis f. flavicarpa, Aframomum alboviolaceum, Saba comorensis and Clitandra cymulosa

November 2019

The aim of this study was to determine the biochemical characteristics (moisture, crude protein, crude lipids, ash, pH, titrable acidity, minerals and free sugars) of four popular edible fruits (Passiflora edulis f. flavicarpa, Aframomum alboviolaceum, Saba comorensis and Clitandra cymulosa), but less exploited. The pulp and seeds of P. edulis f. flavicarpa and A. alboviolaceum was also investigated in order to identify...

Author(s): Josiane Enzonga, Jean Paul Latran Ossoko, Yves Okandza, Arielle Makimouha-Kali and Mvoula Tsieri  

Socioeconomic and ecological consequences of Parthenium weed (Parthenium hysterophorus L.) in Boset Woreda, Ethiopia

November 2019

Parthenium weed (Parthenium hysterophorus L.), an invasive alien species, has been spreading at alarming rate in Ethiopia, causing biodiversity degradation, yield losses in field and horticultural crops, health problems to human beings and livestock. A study on the socioeconomic and ecological impacts of P. hysterophorus was conducted in five Kebeles (lowest administrative division) of Boset Woreda (District), Ethiopia....

Author(s): Gadisa Duguma, Daniel Fitamo and Firew Kebede  

Genotype-by-environment interaction and stability analysis of soybean genotypes for yield and yield components across two locations in Nigeria

November 2019

A multilocational evaluation of 20 soybean genotypes was conducted in two distinct locations (Nsukka in Derived Savanna agro-ecology and Jalingo in Northern Guinea Savanna) of Nigeria in 2015 and 2016 cropping seasons. The experiments were laid out in an Alpha lattice design and replicated three times in each location. The main objective of the research was to determine the genotype-by-environment interaction (G x E)...

Author(s): Jandong, E. A., Uguru, M. I. and Okechukwu, E. C.  

Gastrointestinal nematodiasis in Ethiopian sheep under community-based breeding program

November 2019

Gastrointestinal nematodes (GIN) are amongst the main health and production problems in sheep throughout the world. Faecal egg count (FEC) and FAffa MAlan CHArt (FAMACHA) score can be used as indictors to select genetically resistant animals against the infections. This study was undertaken to (1) determine intensity of and the factors associated with GIN infections in Ethiopian sheep under communal breeding program,...

Author(s): Solomon Shiferaw Tufa, Gábor Mészáros, Aynalem Haile, Joram Mwacharo, Maria Wurzinger and Johann Sölkner

Effects of recommended improved crop technologies and socio-economic factors on coffee profitability among smallholder farmers in Embu County, Kenya

November 2019

This study was carried out to determine the combined effects of recommended production technologies and farmer characteristics on coffee profitability at the farm level in Embu County, Kenya, using the profit function approach. Data were collected using semi structured questionnaires from a sample of 376 farmers who were randomly selected from six cooperative societies, using multistage stratified and probability...

Author(s): Daniel M. Wambua, Samuel N. Ndirangu, Lucy K. Njeru and Bernard M. Gichimu  

Determinant of groundnut (Arachis hypogaea L.) yield improvement in the farmers’ cropping systems in Benin

November 2019

Groundnut is an important crop in the farmers’ cropping systems of Benin and one of the selected crops to be promoted by Benin Government. The aim of the present study is to analyze the traditional groundnut cropping systems in Benin. Farmers’ socio-economic characteristics, cropping practices, farmers’ perceptions of climate change manifestations on groundnut were information collected using an open...

Author(s): Faki O. Chabi, Gustave D. Dagbenonbakin, Brice T. Oussou and Saïdou A.  

Impact of storage on sugar loss in sorghum stalks

October 2019

Sweet sorghum sugars are feedstock for bio-products. Extending production beyond harvest will maximize profitability, but is limited by loss of fermentable sugars during storage. Cutting stalks into billets increases surface area for processing, but can increase sugar degradation. The effect of storing whole sorghum stalks was investigated. Whole stalks of cultivar M 81-E had the highest losses at 44.2% of fermentable...

Author(s): Wright Maureen  

Application of magnetically treated water to eggplant seedlings

October 2019

Application of magnetically treated water to seedlings production has shown beneficial results in several crops. The objective of study was to evaluate the effect of magnetically treated water on germination, growth and development of eggplant seedlings. Three experiments were conducted and the water was treated with 1000 G magnetic field during 24 h. In the first experiment, the treatments tested were applications of...

Author(s): Álvaro Henrique Cândido de Souza, Roberto Rezende, Cássio de Castro Seron, Jean Marcelo Rodrigues do Nascimento, Marcelo Zolin Lorenzoni, Antônio Carlos Andrade Gonçalves, Reni Saath and Paulo Sérgio Lourenço de Freitas  

Smallholders’ technical efficiency of teff production in Ethiopia

October 2019

The main objective of this study is to examine the level and determinants of technical efficiency of smallholder Teff producers in Ethiopia using Stochastic Frontier Analysis (SFA), with appropriate production function, trans-log by LR test. Secondary data from Ethiopian socio-economic survey were used for the analysis. The result of Maximum likelihood Estimate (MLE) shows that area, fertilizer and fragmentation of land...

Author(s): Mastewal Demil Kassa, Wondaferahu Mulugeta Demissie and Muhdin Muhammedhussen Batu  

Assessment of seed quality parameters in different seed sources of chickpea (Cicer arietinum (L.)

October 2019

In Ethiopia, chickpea is an important grain legume next to faba bean and common bean. Quality seed production and associated technologies could be mentioned among the major challenges that limit chickpea production and productivity in Ethiopia. This study was conducted to assess the quality of seeds at different generation classes as obtained from various sources that would contribute an estimate of more than half the...

Author(s): Nigussu Bekele, Bulti Tesso and Asnake Fikre  

The functional characterisation of soybean (Glycine max L.) rhizospheric bacteria indigenous to Ethiopian soils

October 2019

Ethiopia remains a net importer of soybean partly due to low average yields which may be improved by inoculation with rhizobia and/or plant growth promoting rhizobacteria (PGPR). The functional characterisation of 231 rhizobacteria isolated from the rhizosphere of soybean grown in 102 soils collected from different pedo-climatic regions of Ethiopia was carried out. Isolates were initially characterised by Gram staining...

Author(s): Diriba Temesgen, , Marta Maluk, Euan K. James, Pietro P. M. Iannetta and Fassil Assefa  

Genetic diversity studies for morphological traits of hot pepper (Capsicum annuum L.) genotypes in Central Zone of Tigray Region, Northern Ethiopia

October 2019

Hot pepper is the dominant vegetable crop grown in different parts of Ethiopia with long history of cultivation and considerable genetic diversity for most important morphological traits. However, shortage of varieties, the prevalence of fungal and bacterial as well as viral diseases, information is lacking on genetic diversity and genetic information to design genetic resource conservation to improve yield and yield...

Author(s): Fasikaw Belay, Berhanu Abate, and Yemane Tsehaye  

Effects of dry bioslurry and chemical fertilizers on tomato growth performance, fruit yield and soil properties under irrigated condition in Southern Ethiopian

October 2019

Poor soil fertility and low level of fertilizer application results in low productivity of irrigated tomatoes (Lycopersicon esculentum Mill.) in Arba Minch Zuria District, Southern Ethiopia. Therefore, this experiment was conducted to evaluate the role of integrated application of dry bioslurry and chemical fertilizers on growth performance and fruit yield of tomato, and on soil properties. A factorial combination of...

Author(s): Geremew Biramo, Girma Abera and Birhanu Biazin  

Inventory on banana (Musa spp.) as trading commodities in Maluku islands, Indonesia

October 2019

This study was conducted with the aim of providing the latest situation on banana genotypic diversity present in the market places, their cultivations, their market chain and trading facilities in Maluku Province, Indonesia. A survey method was used, in which different markets, farmers and government institutions were visited and interviewed. Seventeen genotypes of three different species and different genome and ploidy...

Author(s): Leunufna Semuel, Woltering Ernst, Hogeveen- van Echtelt Esther and Van der Waal Johannes  

Influence of plant population density on growth and yield of Rosemary (Rosmarinus officinalis L.) at Wondo Genet South Ethiopia

October 2019

A field experiment was conducted at Wondo Genet Agricultural Research Center in the production season of 2013/2014 and 2014/2015 with the objective of identifying the best combination of intra and inter-row spacing for optimum plant population density of rosemary. The treatments consisted of five intra-row spacing (50, 60, 70, 80, and 90 cm) and three inter-row spacing (60, 80 and 100 cm) with a total treatment...

Author(s): Nebret Tadesse  

Effect of flowering slips on the yield of sweet potato (Ipomoea batata (L.) Lam.) tubers

October 2019

Creating a nursery for sweet potato cultivation in tropical and subtropical areas including Okinawa is not necessary because planting is possible throughout the year. In general, sweet potato blooms under natural conditions in tropical and subtropical areas. Sweet potatoes are grown from non-flowering slips, which farmers generally select from a field of a previous cropping. Although the selection and collection of...

Author(s): Yoshihiro Okada, Masateru Madanbashi, Nittaya Nokham, Achara Pawasut and Pedcharada Yusuk  

Agromorphological evaluation within a collection of local tomato (Solanum lycopersicum L.) populations collected in Burkina Faso and Mali

October 2019

Tomato is a vegetable of great economic importance in Burkina Faso. This study evaluated agromorphological diversity within 40 tomato accessions from Burkina Faso and Mali. Trials were conducted during 2015 growing season and IPGRI descriptors were considered in collecting data on field as well as in laboratory. Results revealed the collection to be interestingly diversified. All studied characters presented several...

Author(s): TRAORE Cheick Omar#, TARPAGA W. Vianney#, BOURGOU Larbouga# and ROUAMBA Albert  

Effects of blended fertilizer types and rates on fruit yield and nutrient use efficiencies of hot pepper (Capsicum annuum L.) at Asossa, Western Ethiopia

October 2019

A field experiment was conducted to evaluate the effects of different blended fertilizer types (NPSB and NPSBZn) and their rates on fruit yield, nutrient concentration, nutrient uptake and nutrient use efficiency of hot pepper at Assosa, Western Ethiopia. The experiment was set with eight treatments (recommended NP, three different blended rates for each NPSB and NPSBZn and unfertilized plot) laid out in randomized...

Author(s): Nimona Fufa and Girma Abera  

Some maize agronomic practices in Ethiopia: A review of research experiences and lessons from agronomic panel survey in Oromia and Amhara regions

October 2019

There is a huge maize yield gap in Ethiopia. The use of improper maize agronomic practices could contribute to maize yield gaps. Agronomic panel survey (APS) and a baseline survey were carried out by EIAR and CSA, respectively in collaboration with CIMMYT for three years (2015-17) to assess the rates and types of inorganic fertilizers applied; maize varieties used and plant densities maintained by farmers in major maize...

Author(s): Tesfaye Balemi, Mesfin Kebede, Tolera Abera, Gebresilasie Hailu, Gebreyes Gurmu and Fite Getaneh  

Growth performance and carcass characteristics of cross-bred rabbits fed diets containing palm kernel oil residue

October 2019

This study was conducted to explore the potential of palm kernel oil residue (PKOR), as substitute for wheat bran (WB) on growth performance and carcass characteristics of cross-bred rabbits in Ghana. Forty-eight seven-week old rabbits (1113± 318.20 g) were randomly allotted to 4 dietary treatments in a completely randomized design. The rabbits were given diets in which WB was replaced with PKOR at 0, 25, 50 and...

Author(s): Nuamah E., Teye M., Odoi F. N. A. and Teye P. K.  

Trichoderma asperellum (UFT201) functions as a growth promoter for soybean plant

October 2019

This work is aimed at evaluating the efficiency of Trichoderma asperellum, UFT 201 as a growth promoter of soybean plant in the Cerrado biome in Tocantins, Brazil. Two field experiments were performed in two different cities using different concentrations (1, 2, 3 and 4 kg ha-1) (Porto Nacional and Formoso do Araguaia). For inoculation treatments with Trichoderma asperellum UFT 201 (comprising the granulated product),...

Author(s): Aloisio Freitas Chagas Junior, Lillian França Borges Chagas, Brigitte Sthepani Orozco Colonia, Luciane de Oliveira Miller and José Claudio de Oliveira  

Yield gaps, adoption and seed commercial behaviour: Implications for chickpea seed system in Ethiopia

October 2019

The paper presents the yield gaps, adoption of improved varieties and the commercial behaviour in seed of smallholder chickpea producers based on the primary data collected from 612 randomly selected farmers covering 36 kebeles from 18 chickpea-producing districts, in 2017. The results indicate that the estimated average yield gaps were lower by 37.97 and 49.17% for desi chickpea and by 29.62 and 40.97% for kabuli...

Author(s): Dawit Alemu and Zewdie Bishaw  

Effect of level and time of nitrogen fertilizer application on growth, yield and yield components of maize (Zea mays L.) at Arba Minch, Southern Ethiopia

October 2019

Maize is most important cereal crop used for human diet, livestock fed, and for many industrial applications in many parts of the world. However, the national average productivity is quite below the world average which might be attributed to nutrient deficiency among many problems. A field experiment was conducted during 2016/2017 croppping season to determine the effect of level and time of nitrogen fertilizer...

Author(s): Keyro Assefa and  Zenebe Mekonnen  

Influence of Nitrogen and Phosphorus fertilizer Rates on Seed Yield, Yield Components and Quality of Onion (Allium cepa L.) at Kulumsa in Arsi Zone, South East Ethiopia

October 2019

Onion is an important vegetable crop commercially grown both by large and small scale farmers in Ethiopia. Its production is highly dependent on availability of high and good quality seed, which is constrained by a number of problems including declining soil fertility and inappropriate fertilizer application. A study was conducted to investigate the effects of nitrogen (N) and phosphorus (P) fertilizer rates on onion...

Author(s): Demis Fikre Limeneh, Hussien Mohammed Beshir and Fekadu Gebretensay Mengistu  

Labour cost implication of malaria and perception of cocoa farmers on its preventive measures in Ondo State, Nigeria

October 2019

The study was executed to examine the cost implication of labour used by cocoa farmers during periods of incapacitation caused by malaria and to determine the perception of the farmers on malaria preventive methods. Descriptive statistics were used to classify farmers by days of incapacitation and the cost of labour for cocoa plantation management when farmers were absent from the cocoa plantation because of malaria. A...

Author(s): Eniafe David Olakunle and Oseni Joseph Olumide  

Effect of planting time and fungicide application frequency on severity of late blight (Phytophthora infestans), yield and yield components of potato (Solanum tuberosum L.) at Kulumsa, Southeast Ethiopia

October 2019

Phytophthora infestans is the major bottleneck in potato production in Ethiopia. Selection of appropriate planting time is highly location specific and the most important subject in rain-fed potato production. However, research recommendation on optimum planting time and fungicide application frequency for high lands area of Arsi (Kulumsa) is lacking. Thus, field experiment was carried out to evaluate the effect of...

Author(s): Getachew Kebede Tufa, Fekadu Gebretensay Mengistu  and Gezahegn Berecha Yadessa  

Evaluation of biocontrol agent and wheat straw mulch on yield and yield components of groundnut (Arachis hypogaea L.) genotypes in Central Tigray, Northern Ethiopia

September 2019

Groundnut (Arachis hypogaea L.) is the 13 and 4th most important food and oil seed crops in the world. Groundnut is a source of vitamin E. However, due to low soil fertility, drought stress, fungal diseases and lack of appropriate management, production has been constrained qualitatively and quantitatively in the study area. Trichoderma harzianum and wheat straw mulch could increase the growth performance of groundnut...

Author(s): Nahom Weldu and Mashilla Dejene  

Performance of CIP and Dutch potato varieties under Rwanda climate conditions

September 2019

In attempt to develop new potato varieties with the current market lead traits, nine Dutch potato varieties namely Fabula, Panamela, Sagitta, Challenger, Sifra, Rosi, Memphis, Taurus and Derby, and International Potato Center (CIP) varieties Kinigi and Kirundo were evaluated in three Rwandan sites for two growing seasons in a randomized complete block design (RCBD) with tree replications. The data collected consists of...

Author(s): Rukundo Placide, Ndacyayisenga Theophile, Ntizo Senkesha, Nshimiyima Jean Claude and Kirimi Sindi  

Inoculation with entomopathogenic fungi reduces seed contamination, improves seed germination and growth of chilli seedlings

September 2019

The use of entomopathogenic fungi is a common practice for integrated pest management. It has recently been observed that they also play a role as growth promoters and plant disease antagonism. In this study, the effect of inoculation with two strains of Beauveria bassiana [(Bals.-Criv.) Vuill. 1912] (strains BB42 and BB09) and two strains of Metarhizium anisopliae [(Metschn.) Sorokīn 1883] (strains MA25 and MA28) on...

Author(s): Emmanuel Ortiz Espinoza, Fabiola Villegas Rodríguez, Pablo Delgado Sánchez, Luisa Eugenia del Socorro Hernández Arteaga, José Marín Sánchez,  Hugo Magdaleno Ramírez Tobías and Federico Villarreal Guerrero  

Evaluation of the systemic action of neem (Azadirachta indica A. juss) seed products against the desert locust immature Schistocerca gregaria (Forskal) (Orthoptera: Acrididae)

September 2019

The current study was done to investigate the potential of the systemic growth regulatory effects of various neem seeds products against immature stages of desert locust infesting potted millet plants in Sudan. The tests also covered the stability of the systemic action of neem seed powder (NSP) under conditions of water stress. Some (33-80%) of the exposed nymphs developed to the third stage without further moulting....

Author(s): Azhari Omer Abdelbagi, Magzoub Nour El Huda El Amin, Abd Elaziz Sulieman Ahmed Ishag and Ahmed Mohammed Ali Hammad  

Use of temporary immersion bioreactors on in vitro culture of cactus pear

September 2019

This work was conducted with the objective of evaluating the performance of cactus pear cultivars on in vitro culture using bioreactors and the conventional method. The treatments were arranged in a 3 × 2 factorial scheme with a completely randomized design, and the three cactus pear cultivars (Orelha de elefante mexicana, Miúda and IPA-Sertânia) were combined with two micropropagation methods...

Author(s): Luciana Cardoso Nogueira Londe, Wander Silva Viana, Selma Silva Rocha, Pedro Gustavo M. de Araújo, Jéssica Guerra Calaes, Júlio César Gomes Pereira and Nívio  Poubel Gonçalves  

Wheat response to water stress condition at different growth stages in Amibara, Ethiopia

September 2019

To evaluate the effect of water stress at different crop growth stages on yield, yield components and water use efficiency, a field experiment was carried out in 2015/2016, 2016/2017 and 2017/2018 for bread wheat (Gambo variety) at Werer Agricultural Research Center. The experiment was laid out in Randomized Complete Block Design (RCBD) with three replications having 15 experimental treatments. Combination of water...

Author(s): Jemal M. Hassen, Wondimu T., Fikadu R. Borena, Kebede N., Niguse A. and Elias K. Hailu  

Soil chemical indicators and nutrient cycling variations across sequential years of rice cultivation: A case study of floodplain conditions of the Amazon, Brazil

September 2019

To meet the rising food demand for next generations, soils are needed to stand biological yield and promote animal, plant and human welfare. In this logic, the aim of the study was to determine the effects of different soil uses; (a) successive irrigated rice planting and (b) different soil management practices onto soil chemical properties and nutrient cycling. The study was carried out in areas with dissimilar years...

Author(s): Luis Sanchez, Valdinar Melo, Taline Nunes, Diego Portalanza, Angelica Durigon and Simón Farah  

Local knowledge of pumpkin production, performance and utilization systems for value addition avenues from selected agro-ecological zones of Uganda

September 2019

Pumpkin is one of the underutilized fruit vegetables in Uganda despite the fact that it has wide spectrum of both nutritional and medicinal values. A survey was carried out to document local knowledge of pumpkin production; performance and utilization systems to aid the selection of pumpkin varieties to be used for particular value addition avenues. It was observed that twelve varieties of pumpkin are commonly grown and...

Author(s): Immaculate Nakazibwe, Rapheal Wangalwa, Eunice Apio Olet and Grace Rugunda Kagoro  

Assessing fish production, demand and supply in the selected districts of North Shewa Zone, Ethiopia

September 2019

This study was aimed to assess fish production, supply and demand in selected districts of North Shewa Zone, Amhara Regional State, Ethiopia to generate base-line data that would help in the proper and sustainable utilization of fishery and water resources. Structured and semi structured questionnaires were employed as a means of data collection tools. Respondents from five districts that is, Merhabete, Menz Mama, Menz...

Author(s): Birhanu Kapital  

Botanical control of cultivated plants of Lippia chevalieri Moldenke (Verbenaceae)

September 2019

In Mali, the Malarial-5 which is an improved traditional medicine (ITM) made partly with the leaves of Lippia chevalieri is used to treat symptoms of uncomplicated malaria. One of the issues related to the production of this ITM is the quality of the raw material. The present work aimed to control the quality of the leaves from cultivated plants of L. chevalieri. This study was carried out from 2015 to 2016 in Mali. The...

Author(s): M. L. Diarra, S. M. Dembélé, A. Dénou, M. Haïdara, N. Ballo, B. L. Coulibaly, R. Sanogo, M. Traoré, D. Diallo, and K. Noba    

Farmers’ insecticide use practices and species composition and abundance of thrips species (Thysanoptera: Thripidae) on onion in the Rift Valley of Ethiopia

September 2019

A survey was conducted in 2016 in the major onion producing areas of the Ethiopian Central Rift Valley. A structured questionnaire was used to assess farmers’ management practices with a focus on the use of insecticides. Plant samples were collected to assess species composition of thrips and their abundance. Results showed that insecticides were the only control methods for onion growers to control thrips...

Author(s): Belete Negash, Ferdu Azerefegne and Gashawbeza Ayalew  

Grain quality and nitrogen use efficiency of bread wheat (Triticum aestivum L.) varieties in response to nitrogen fertilizer in Arsi highlands, southeastern Ethiopia

September 2019

Field experiments were conducted in 2017/18 cropping season at Kulumsa Research Center Farm (OnS) and on farmer’s (OnF) field to assess the effect of N fertilizer rates on grain quality and NUE of bread wheat (Lemu and Wane) varieties. Factorial combinations of Lemu and Wane varieties and five N rates (0, 46, 92,138 and 184 kg N ha-1) were laid out in a randomized complete block design with three replications. The...

Author(s): Dereje Dobocha, Girma Abera and Wegayehu Worku  

Aggressiveness of Phaeoisariopsis griseola isolates and reaction of common bean varieties to the isolates under greenhouse conditions

September 2019

Angular leaf spot caused by Phaeoisariopsis griseola is one of the most destructive diseases on common bean in Southern and Southwestern parts of Ethiopia. However, systematic and focus studies were lacking to this important disease. Therefore, greenhouse study was conducted to test aggressiveness of P. griseola isolates and evaluate resistance reactions of bean varieties to pathogenic isolates. 55 leaf samples were...

Author(s): Misganaw Aytenfsu, Habtamu Terefe and Getachew Ayana  

Cleome gynandra L. origin, taxonomy and morphology: A review

September 2019

Cleome gynandra L. is one of the traditional leafy vegetables in Africa and Asia providing essential minerals and vitamins to the diet and income of resource poor communities. Despite these benefits, the crop has not been studied extensively resulting in lack of scientific information to guide crop improvement research and associated agronomic practices. The taxonomy of the crop, its reproductive behaviour, genome size,...

Author(s): Oshingi Shilla, Fekadu Fufa Dinssa, Emmanuel Otunga Omondi, Traud Winkelmann and Mary Oyiela Abukutsa-Onyango  

Factors influencing the level of commercialization among smallholder cassava farmers in Taita-Taveta and Kilifi Counties, Kenya

September 2019

Commercialization of farm produce is a decision made at the household level. However, the decision is influenced by different socio-economic and institutional factors which in turn affect the level of commercialization. Therefore, cassava farmers in Taita-Taveta and Kilifi counties participate in the market at different commercialization levels due to their difference in market orientation. The Household...

Author(s): Amos Nyangira Tirra, Willis Oluoch-Kosura, Hillary Nyanganga and Agnes W. Mwang’ombe  

Assessing yield stability and adaptability of Andean common bean genotypes in the semi-arid environment of Botswana

September 2019

Common bean (Phaseolus vulgaris L.) is a vital source of nutrients worldwide. It is one of the most consumed grain legume in Botswana. Fourteen Andean common bean genotypes were evaluated in four environments (two seasons and two diverse agro-ecologies) to determine the effect of genotype and environment interaction and yield stability. The genotypes were grown in a randomized complete block design with three...

Author(s): Odireleng O. Molosiwa, Joseph Pharudi, Seipati Seketeme, Patrick Mashiqa and Rowland Chirwa  

Heritability of reversion from Sweet potato feathery mottle virus infection in sweetpotato

September 2019

Sweet potato feathery mottle virus (SPFMV) causes 50% yield losses in sweetpotato (Ipomoea batatas). However, some cultivars have been observed to become SPFMV free following initial infection, a phenomenon termed reversion. The heritability of reversion from virus infections in sweetpotato remains unclear. This study is aimed at determining heritability of reversion from SPFMV in progeny of crossed reverting and...

Author(s): Alexander Ssamula, Geofrey Ogwal, Anthony Okiror, Brasio Settumba Mukasa and Peter Wasswa  

Yield prediction under associated millet and cowpea crops in the Sahelian zone

September 2019

Dekads in the prediction of yields under associated millet and cowpea crops were studied in three localities located in the Sahelian zone. Multiple linear regressions was applied to create predictive models based on variables extracted from the decadal Normalized Difference Vegetation Index (NDVI) image series from the SPOT VEGETATION satellite, the GeoWRSI tool, and the recorded ground rainfall. The earliest forecast...

Author(s): Yahaya Mounkaila,  Issa Garba and Baragé Moussa  

Vegetative and enzymatic analysis of the initial stages of Coffea arabica L. grown from seeds treated with humic substances

September 2019

Arabica coffee is a perennial crop usually propagated by seeds, which must be healthy and able to form normal plants. The objective of this study was to analyze the vegetative and enzymatic reactions in the initial stages of Arabica coffee seedlings treated with different humic substances and at different concentrations. A germination test was conducted with Arabica coffee seeds of the Topazio MG 1190 cultivar using...

Author(s): Hariana Paula Alves de Azevedo, Alex Mendonça de Carvalho, Mariana Thereza Rodrigues Viana, Carlos Alberto Silva, Heloisa Oliveira dos Santos and Joyce Doria Rodrigues  

Determination of the genus Meloidogyne species and study of their impact on the market gardening in the area of Bamako, Mali

August 2019

The development of market gardening is faced with many problems among which there are the nematodes of the genus Meloidogyne. The aim of this study is twofold: (a) determining the Meloidogyne species that are crowned by the perineal plates of female and (b) studying the impact of the multiplication of these nematodes on the tomato cv Roma (Lycopersicon esculentum L). Root samples were collected at five sites around...

Author(s): Boubacar K. Touré, Mohamed S. Maïga, Doulaye Dembélé and Hammache Miloud  

Genetic diversity of cassava (Manihot esculenta Crantz) varieties grown in Daloa district in Central-Western Côte d'Ivoire

August 2019

Cassava is an important staple food in Côte d'Ivoire produced in several areas including the Daloa district in Central-Western Region. However, this plant experiences biotic and abiotic constraints that strongly limit its productivity. Proper knowledge of genetic diversity is important to mitigate these constraints and select resistant and well adapted genotypes to increase the productivity. This study...

Author(s): Flora Yao, Mathurin Koffi, Innocent Abe, Bernardin Ahouty, Siriki Simaro, Ibrahim Konaté, Barkissa Traore, Edwige Sokouri, Martial N’Djetchi, Thomas Konan  and Tidou A. Sanogo  

Parent-offspring regression, correlation and genetic advance of drought and yield traits at early generation in groundnut (Arachis hypogaea L.)

August 2019

A study was carried out to estimate the parent-offspring regression and correlation and, to determine genetic advance of yield and drought related traits of groundnut at early segregating populations. All the experiments were conducted in the dry season 2015/2016 at the International Crops Research Institute for the Semi-Arid Tropics ICRISAT Samanko, Mali under full irrigation and drought stress conditions. The data...

Author(s): Ousmane Sanogo, Pangirayi B. Tongoona, Kwadwo Ofori, Samuel K. Offei and Haile Desmae  

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