African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 6714

AJAR Articles

Factors affecting the adoption of mobile applications by farmers: An empirical investigation

January 2021

In developing countries such as Nigeria, agriculture is the main source of livelihood with over 70% of the population engaged in farming. They are mostly smallholders and subsistence farmers with minimal use of technology and low productivity. The use of mobile applications in agriculture can potentially help smallholders access agricultural information and financial services, improve access to markets and enhance...

Author(s): Victor Okoroji, Nic J Lees and Xiaomeng Lucock  

Makafaci and Wachangu improved doubled haploid rice (Oryza sativa) varieties recommended for lowland cultivation in Malawi

January 2021

The study was conducted in 2017/2018 and 2018/2019 rainy seasons at Nanzolo, Domasi and Mkondezi in three replications using the RCBD following the Mother-Baby Trial Approach. The objective of the study was to evaluate grain yield of twelve high-yielding rice (Oryza sativa) varieties that were selected and shared from elite Doubled Haploid germplasms of a Collaborative Project of KAFACI (RDA) and AGRA at Suwon in Korea...

Author(s): Elias Jeke, Tennyson Mzengeza, Kyung-Ho Kang, Lazarus Chapo, Mwai Malipa, Brian Boyce, Memory Kachingwe and Innocent Machira  

Status of parthenium weed (Parthenium hysterophorus L.) and its control options in Ethiopia

January 2021

Parthenium (Parthenium hysterophorus L.) is an invasive herbaceous weed which belongs to the family Compositae. It is believed to have originated in tropical America and now occurs widely in Asia, Australia, Southern and east Africa. Parthenium has been observed to grow on road sides, gardens, waterways, in grasslands and crop fields both during the crop season and after harvest, as long as enough moisture is available....

Author(s): Zelalem Bekeko  

Use of unmanned aerial vehicles (UAV) as an innovation in agriculture

December 2020

Facing up with the effects of climate change, increasing human population, reduction of natural resources, and degradation of soils the agricultural sector has the challenge of meeting the world's demand for food. In this scenario, the interest of scientific communities for the use of Unmanned Aerial Vehicles (UAV) in the agricultural sector has increased in recent years. The aim of this article is to provide a...

Author(s): Eduardo Cornejo-Velazquez, Hugo Romero-Trejo, Otilio-Arturo Acevedo-Sandoval, Alfredo Toriz-Palacios, and Mireya Clavel-Maqueda  

Effects of two growth hormones and three manure formulas on a variety of papaya (Carica papaya L.) in the Sudano-Sahelian zone of Mali

December 2020

This study was conducted in the orchard of the Rural Polytechnic Institute for Training and Applied Research (IPR / IFRA) in Katibougou to assess the growth and production of solo papaya (Carica papaya L., 2n = 18) in Sudano-Sahelian zone of Mali as well as the effects of the hormone and manuring formulas. A split plot device, comprising 2 factors with 3 levels of variation each, was used. The main factor was  the...

Author(s): SIDIBE Abdoulaye, TRAORE Bakary Mamourou and YAHAYA Tassiou  

Estimation of magnitudes of heterosis for grain yield and yield contributing traits of conventional maize (Zea mays L.) single cross hybrids

December 2020

This study was initiated with the objective of estimating magnitude of heterosis of selected conventional maize inbred lines. Ten elite inbred lines were selected based on over per se performances. The crosses were done in a 10 x 10 half-diallel mating design to produce 45 F1 single crosses hybrids during 2016. The experiment was conducted at Bako National Maize Research Center in 2017 main cropping. The experimental...

Author(s): Zelalem Tafa, Gudeta Nepir and Girum Azmach  

Limestone application effects on common bean (Phaseolus vulgaris L.) yield and grain iron and zinc concentration on a Ferralsol soil in Uganda

December 2020

Soil acidification has major ramifications on crop production because low pH soils are less productive. The objective of this study was to determine the effect of limestone application on yield and grain iron (Fe) and zinc (Zn) concentration in newly released high iron and zinc, drought resilient varieties of common bean (NAROBEAN 1 and 3). Using a split-plot in time design, an experiment was set up using three common...

Author(s): Rosemary Bulyaba, Andrew W. Lenssen, Kenneth J. Moore and Onesmus Semalulu  

Managed bees as pollinators and vectors of bio control agent against grey mold disease in strawberry plantations

December 2020

Pollination by bees and other animals significantly increase both crop yields and quality. Bees also support the transfer of bio-control agents for suppression of crop pests and diseases through bio-vectoring technology that has not been applied in Africa. Two farms were set up to test the ability of managed bees to disseminate Trichoderma harzianum to control Botrytis cinerea, on strawberries. At on-station farm, three...

Author(s): Jane Muthoni Macharia, Mary Wanjiku Gikungu, Rebecca Karanja and Sheila Okoth  

Farmers’ preferences towards breeding objective for indigenous chickens in different agro-ecologies of Ethiopia

December 2020

A study was conducted in different agro-ecologies of Ethiopia with the objective of understanding the farmers’ preferences towards breeding objectives in indigenous chickens. For the interview, 245 households (60 from lowland, 100 from midland and 85 from highland) were randomly selected. Farmers in lowland had significantly (p<0.05) lower chicken populations while comparing with the remaining agro-ecologies....

Author(s): Berhanu Bekele, Aberra Melesse, Sandip Banerjee, Wondmeneh Esatu and Tadelle Dessie  

Effect of ploughing and weeding frequencies on growth, yield and yield components of Teff [Eragrostis tef (Zucc.) Trotter] in Mirab Abaya Area, Southern Ethiopia

December 2020

Inappropriate ploughing and weed control practices are among the major limiting factors for teff productivity in Ethiopia. Hence, this study was conducted to evaluate the effect of ploughing and weeding frequencies on growth and yield of teff varieties in Mirab Abaya district of southern Ethiopia during short cropping season of 2019. The treatments as combinations of three levels of ploughing (ploughing six times, four...

Author(s): Zewditu Dawit, Berhanu Lemma Robe and Amare Girma  

Effects of impurity on the efficiency of a legume threshing machine

December 2020

A motorized legume thresher was redesigned to utilize coefficient of friction to separate grains from impurities, the thresher performance was evaluated and best combination of parameters for highest separation efficiency determined. The study was carried out using a randomized design of three batch weights (BW): 100, 150 and 200 g, four surfaces (S) mild steel, plywood, rubber carpet and rug at an angle of inclination...

Author(s): Aluko O. B., Sanni L. A., Akingbade T. O. and Ogundahunsi Oluwafemi  

Foliar and time of application of silicon and the effect on rice yield components, productivity and seed quality

December 2020

The application of silicon (Si) has been beneficial to several cultures, mainly those considered Si accumulators, such as rice. Thus, in most cases Si is supplied via soil. However, it has been found that foliar application and small amounts of the element can be a viable alternative for its supply to plants. The objective of the present work was to evaluate the foliar application times of different silicon sources on...

Author(s): Jucilayne Fernandes Vieira, Michele Nadal, Lilian V. M. Tunes, Gabriel Duarte, Ewerton Gewehr, Otávio Oliveira Corrêa, Acácio Figueiredo Neto and Marylia de Sousa Costa  

Release of fenugreek (Trigonella foenum-graecum L.) Variety “Bishoftu”

December 2020

Even if there are released Fenugreek varieties in Ethiopia, there is no variety specifically for color quality purpose. This study was conducted based on the objective of evaluation of different colored Fenugreek germplasm for yield and market preference in Ethiopia. Evaluation and preliminary variety trial were conducted at Debrezeit, Chefe donsa and Akaki locations. While national variety trial was conducted at...

Author(s): Dejene Bekele, Tewodros Lulseged, Dese Yadeta, Habtewold Kifelew, Abukiya Getu, Demis F. and Asmamaw B.  

Phenological and grain yield response of hybrid maize varieties, released for differing agro-ecologies, to growing temperatures and planting dates in Ethiopia

December 2020

Growing temperatures and planting dates affect phenology and grain yields of maize varieties and farmers have to choose suitable varieties that fit into different planting dates and growing temperatures. A field experiment was conducted to investigate the response of different hybrid maize varieties to different growing temperatures through growing the varieties at different locations varying in altitudes (low land, mid...

Author(s): Tesfaye Balemi, Mesfin Kebede, Begizew Golla, Tocha Tufa, Girma Chala and Tolera Abera  

Effect of methyl jasmonate on Acacia senegal (Hashab trees) production and characteristics of gum

December 2020

The study aimed to investigate the effect of the application of different concentrations of Methyl Jasmonate (JA-Me) on yield and quality of gum in Hashab (Acacia senegal) trees. Moreover, also studied the anatomy of the treated trees, and characteristics of gums produced. The study was carried out in two locations, Gedarif State (high rainfall area-clay soil) and North Kordofan State (low rainfall area- sand soil) in...

Author(s): Sayeda A. A. Khalil and Sayadat M. Eltigani  

Correlation between Arbuscular Mycorrhiza (AM) fungi and plant growth of two cassava (Manihot esculenta Crantz) clones under Bentex ‘T’(Benomyl+Thiram) soil treatments

December 2020

Growth response of two clones of Manihot esculenta Crantz (Cassava), TMS 30555 and TMS 30572 to Bentex T soil treatment was studied. Mycorrhizal root colonization in relation to growth parameters such as stomata size, plant water content, plant foliation, as well as height and stem circumference was examined. Bentex T, a fungicide which could be used to limit the growth of Arbuscular Mycorrhizal (AM) fungi was added to...

Author(s): Ifeanyi Mirian Oyem and Philippine Chigozie Okubor  

Effects of DEM resolution on the RUSLE-LS factor and its implications on soil and water management policies through the land cover seasonality

December 2020

This study aimed to demonstrate the effects of spatial resolution in modeling water erosion by the Revised Universal Soil Loss Equation (RUSLE). In this study, three specific objectives were defined: Evaluation of the effect of the geographic information source on water erosion, seasonal effects on the potential production of sediments, as well as public policies concerning the different scenarios. The topographic...

Author(s): Matheus Fonseca Durães, Angelo Evaristo Sirtoli and Jean Sartori dos Santos  

Genetic diversity of elite wheat mutant lines using morphological characters and molecular markers

December 2020

Genetic diversity is the material basis for crop improvement. The genetic diversity of 17 wheat genotypes was evaluated using 25 agro-morphological characters and 10 simple sequence repeat (SSR) markers. The objective of this study was to determine the genetic diversity of elite stem rust resistant mutant lines in comparison with their adaptable but susceptible parent varieties using morphological traits and molecular...

Author(s): Philip K. Chemwok, Mirriam G. Kinyua, Oliver K. Kiplagat and Amos K. Ego  

Effects of genotypes and sowing time on phenology and yield performance traits of tef [Eragrostis tef (Zucc.) Trotter] in low moisture stress environments

December 2020

Tef (Eragrostis tef (Zucc.) Trotter) is among the most important cereals in Ethiopia in terms of both acreage and production. However, its productivity is relatively low as compared to other cereals mainly due to drought and climate variability coupled with lack of drought tolerant varieties. A field experiment was conducted with the objectives of assessing the effects of genotypes and sowing dates on the growth and...

Author(s): Mengistu Demissie, Kebebew Assefa and Dechassa Hirpa  

Economic efficiency of rubber production and affecting factors: Case of smallholder rubber production in Quang Binh Province, Vietnam

November 2020

Rubber is a perennial crop, so to evaluate economic efficiency of smallholder rubber production, the author uses long-term analysis method with values such as actual present value (NPV), Benefit Cost Ratio (BCR), Internal rate of Return (IRR) and annual value. The factors affecting the productivity of smallholder rubber are assessed through the Cobb-Douglas functional production function analysis method with input...

Author(s): Tu Luc Tran  

Technical efficiency of pineapple production in Republic of Benin

November 2020

Assessing the technical efficiency of pineapple producers is essential to avoid waste of resources and above all to target advices for improving the productivity of the pineapple producers. For this, a survey was carried out among 365 randomly selected producers from five major pineapple-producing Communes. Using the meta-border stochastic production model, technical efficiency scores of pineapple producers are...

Author(s): Félix C. BIAOU  

Involvement of key stakeholders in controlling animal diseases in rural settings: Experiences with African swine fever in Uganda

November 2020

Key stakeholders’ involvement in the design and enforcement of effective African swine fever (ASF) biosecurity measures is very vital. Unfortunately, many times key stakeholders are less involved in the policy designing process. This study analyzed information from stakeholders in Mukono District, to assess the acceptability of enforcing ASF biosecurity measures among key stakeholders. Mukono District has a high...

Author(s): Peter Ogweng, Charles Masembe, Johnson Francis Mayega, Ibrahim Keeya, Charles Tumuhe, Rodney Okwasiimire and Vincent Muwanika  

Net income analyses of maize agribusiness in Wukari Taraba State, Nigeria

November 2020

The study was carried out to ascertain effects of agribusiness functions and experience on small scale maize agribusiness operators’ net income in Wukari, Taraba State, Nigeria. A purposive sampling was used to select four area-markets namely Rafin-Kada, Gindin-Doruwa, Bantaji and Kente markets, where maize agribusiness owners predominantly carry out production and marketing of maize grain. Fifteen small scale...

Author(s): Godwin Odo Onogwu, Kingsley I. Okeke-Agulu , Osayi Chinwe Prisca and Agelaga Kume Benedict  

Biochemical characterization and genetic variability among thirteen black pepper genotypes

November 2020

There is limited information on the biochemical variability of black pepper genotypes in Ethiopia.  Dried fruit samples from 13 introduced black pepper accessions were used for biochemical analysis. All the determinants were done in triplicates.  Biochemical data ranged for essential oil between 1.70-3.60%; oleoresin, 8.30-12.15%; ash, 5.72-7.05%; acid insoluble ash, 1.97-4.06%; crude fiber, 13.61-17.96%;...

Author(s): Dejene Bekele and Andargachew Gedebo  

Cultivation of edible mushrooms in Namibia: Prospects and challenges of small scale farmers

November 2020

The demand for mushroom cultivation rapidly increases over years in Namibia as more people discovered its health and medical benefits, as well as the mushroom economic value. However, high temperatures at some parts of the country had made the cultivation difficult though watering in the mushroom houses was recommended as a measure to decrease temperature and rise up the humidity in the mushroom houses. In order to...

Author(s): Fimanekeni Ndaitavela Shivute  

Pesticide use in vegetable production in rural Uganda - A case study of Kabale District, South western Uganda

November 2020

A study to investigate commonly grown vegetables, commonly used pesticides, and pesticide use practices was conducted in Kabale District, in South-western Uganda. This is because indiscriminate pesticide use and poor application practices can leave pesticide residues in food rendering it unsafe for consumption. The study revealed extensive pesticide application in Brassica oleracea; var. capitata (cabbage), Brassica...

Author(s): Hannington Ngabirano, and Grace Birungi  

Demographic factors and perception in rhizobium inoculant adoption among smallholder soybeans (Glycine max L. Merryl) farmers of South Kivu Province of Democratic Republic of Congo

November 2020

The use of rhizobium inoculants fertilizer in soybean production has been practiced for over a century all over the world, but in Africa, the technology is relatively new. Rhizobium inoculants have been disseminated in Eastern Democratic Republic of Congo (DRC) by Nitrogen 2 Africa (N2AFRICA) project of CIAT and later IITA since 2010. However, demographic factors and perception in rhizobium adoption remain unknown. We...

Author(s): Ndusha Bintu Nabintu, Onwonga Richard Ndemo, Nabahungu Leon Sharwasi, Mushagalusa Nachigera Gustave, Kazamwali Muzee and Keya Shellemia Okoth  

Effect of sugarcane bagasse ash and manure amendments on selected soil properties in Western Kenya

November 2020

This research determined the effects of incorporating sugarcane bagasse ash and cattle manure on soil pH, available P, and cation exchange capacity (CEC) during a 2 seasons’ field experiment in Kakamega County of Western Kenya. The experiment used a Randomized Complete Block Design, 3 replications, and a 3 × 3 factorial arrangement of treatments. Sugarcane bagasse ash and cattle manure application showed...

Author(s): Tabere D. Taddeo Bidai, Joyce J. Lelei and Josephine P. Ouma  

Moving beyond manual software-supported precision irrigation to human-supervised adaptive automation

November 2020

This paper “looks across the river” to explore computer engineering applied within agriculture, particularly precision irrigation. It begins with work by the United Nations Food and Agriculture Organization (FAO). They developed guidelines for estimating a crop’s water requirements. These guidelines describe a set of equations (Penman-Monteith form) drawn from the physics of evapotranspiration. The...

Author(s): Peter George Raeth  

Effect of calorie protein ratio on the growth performance and haematology of two strains of pullet chicks

November 2020

In a 56 days experiment, 432-day old chicks were used to determine the influence of varying levels of calorie:protein ratio on the growth performance and haematology of two strains of commercial pullet chicks. Each of the strains, (i)Nera Black (NB) and (ii)Isa Brown (IB) were randomly allocated to three dietary levels of calorie:protein ratio designed to contain normal calorie:protein ratio (NC:P), high calorie:protein...

Author(s): F. A. S. Dairo, Y. O. Oyewole and S. O. Olawumi  

Evaluation of ten botanical insecticides against the sweet potato Weevil, Cylas formicarius (Fabricius, 1798) (Coleoptera: Brentidae)

November 2020

The sweet potato weevil, Cylas formicarius (Fabricius) (Coleoptera: Brentidae), is a destructive insect pest that damages sweet potatoes both in the field and during storage. To identify new environmentally friendly insecticides to control this insect pest, three assays (olfactory test, anti-feeding assay, and toxicity assay) were conducted to evaluate the efficacy and mode of action of 10 botanical insecticides against...

Author(s): Liyun REN, Ganghui ZHENG, Bimei CHEN, Longfei He, Yongmei LIAO and Baoshan CHEN,  

Drivers and restrictions of range pasture improvement by agro-pastoralists in Kiruhura District, Uganda

November 2020

Range pastures provide the basic ruminant feeds resource for livestock production in semi-arid areas despite ruminant nutrition remaining a challenge affecting productivity. Different livestock development interventions have been promoted to improve livestock nutrition with low farmer adoption rate. A cross sectional exploratory study was conducted between March and July 2018 to identify the drivers of range pastures...

Author(s): Twinamatsiko Robert, Nalule Agnes Sarah and Okello Samuel  

Growth, nodulation and yield response of green bean (Phaseolus vulgaris L.) to plant population and blended NPS fertilizer rates at Alage, Central Rift Valley of Ethiopia

November 2020

Recently Green bean production and demand is increasing in Ethiopia due to its fast maturity and nutritional value. However, various constraints are reported for its low productivity, including inappropriate uses of plant population and fertilizer rates. The objective of this study was to determine the optimum plant population and NPS rate for quality and economically feasible yield of Green bean. The experiment was...

Author(s): Adugna Sori Shanko, Andargachew Gedebo and Ashenafi Haile Gebeye  

Determinants of fish consumption in the state of Qatar: Post blockade

November 2020

This study used a count data model to analyse the factors that affect fish consumption in Qatar after the blockade; aiming for effective evaluation, formulation and implementation, of policies for the fishery sector. To achieve this, the community of Qatar is divided into three groups based on their fish consumption rate: high, moderate, and low consumer. The determinants of fish consumption were confirmed using the...

Author(s): Sana Abusin, Noor Al-Emadi and Engi Elmaghraby  

Effect of on-farm water management practices and irrigation water source on soil quality in Central Ethiopia

November 2020

Soil salinity is the major factor that limits agricultural productivity in arid and semi-arid regions. The use of improved farm management practices in such areas is becoming a highly concerning issue to sustain agricultural productivity. This study, therefore, was conducted to evaluate the effect of on-farm water management practices and irrigation water sources on soil quality. The experiment was conducted on 16...

Author(s): Demelash Wendemeneh, Mekonen Ayana, Partap Singh and Amare Haileslassie    

Genetic diversity analysis and construction of selection index of selected tomato genotypes

October 2020

To study the genetic variability and selection index of selected tomato genotypes, an experiment was conducted at the farmer’s field of Chirirbandar Upazilla of Dinajpur District, Bangladesh. Ten tomato genotypes were evaluated in a randomized completely block design with four replications. The study results displayed high heritability plus higher genetic advance for all the traits studied. Among the traits, plant...

Author(s): Mahmudul Hassan, Basudeb Roy, Nurhasan, Kawsar Ahmed and Omar Kayess  

Cultural practices and pesticides contamination level of tomato in two gardening sites in the region of Boucle du Mouhoun, Burkina Faso

October 2020

The present study consisted of evaluation of cultural practices and pesticides contamination level of tomato in some gardening sites in the region of Boucle du Mouhoun (Burkina Faso). A survey of phytosanitary practices among 30 producers was carried out at the Di and Dedougou sites. The pesticide contamination level of tomatoes collected was determined by the QuEChERS method. The survey revealed a low level of literacy...

Author(s): Abdoudramane SANOU, Kiessoun KONATE, Hemayoro SAMA, Roger DAKUYO, Kabakdé KABORE, Mamounata DIAO, Crépin Ibingou DIBALA and Mamoudou Hama DICKO  

Evaluation of a motorized cassava peeler with four lining materials

October 2020

Cassava processing requires peeling, which is mainly done manually and not effective for large scale processing, hence, the need to mechanise the peeling process. A motorized cassava peeler with four drum and disc linings (concrete, metal, rubber and wood) was designed. The prototype was tested at three disc speeds; (250, 350 and 500 rpm) to determine peeling capacity, peel removal efficiency, and flesh loss. The...

Author(s): Ishmael Nartey Amanor and Emmanuel Yaovi Hunnuor Bobobee  

Comparing productivity of rice under system of rice intensification and conventional flooding: A switching regression approach

October 2020

This paper examined the factors influencing rice productivity in Mwea Irrigation Scheme using the System of rice intensification (SRI) and conventional flooding (CF). Stratified sampling was used to obtain 364 smallholder rice farmers for interviewing. Data collection was done with the aid of a semi-structured questionnaire and analyzed using the Endogenous Switching regression Model (ESRM).  The results of ESRM...

Author(s): Francis K. Kaloi, Hezron N. Isaboke, Charles N. Onyari and Lucy K. Njeru  

Agronomic and economic evaluation of phosphate fertilizer use in maize-bean cropping systems in Western Kenya

October 2020

Effects of phosphorus rate and crop arrangement on yields and economic benefits in maize-bean cropping systems were investigated for two seasons: Short rains (SR) of 2015 and long rains (LR) of 2016 in Western Kenya. A split plot design with five crop arrangements in the main plots; one row of maize and beans alternating (conventional), maize and beans planted in the same hole (SH), two rows of maize alternating with...

Author(s): Dorcus Ofuyo, Peter Opala and George Odhiambo

Leaf organic content variation of 2 durum wheat genotypes under water stress by applying phytohormone (IAA)

October 2020

Water stress is the most important problem in plant growth and development. Greenhouse trial is carried out on 2 durum wheat (Triticum durum Desf) genotypes (MBB and WAHA), to evaluate the effect of water stress on the biochemical content of leaves, and the possibility of reducing this effect by applying a growth regulator Indole-3-acetic acid (IAA) by seeds soaking and foliar spraying. Water stress causes a large...

Author(s): A. Bendjama and S. Ramdani  

Biofortified bean genotypes under integrated soil fertility management across sub-humid agro-ecological zones of The Democratic Republic of Congo

October 2020

This study was implemented to evaluate the performance of biofortified bean under different integrated soil fertility management (ISFM) options and agro-ecological conditions in Democratic Republic of Congo (DRC). A Split-plot design with eight genotypes as main factors and four ISFM options as secondary factors was carried out in eight production zones distributed across South-Kivu, North-Kivu, and Katanga provinces....

Author(s): Kanyenga L. Antoine, Kizungu V. Roger, Kasongo L. Emery, Kalonji M. Adrien and Rowland M. Chirwa  

Response of eight sorghum varieties to plant density and nitrogen fertilization in the Sudano-Sahelian zone in Mali

October 2020

This work was conducted to study the performance of eight sorghum varieties that contrasted with intensified practices in the Sudano-Sahelian zone of Mali. Two experiments were carried out in 2018 and 2019 rainy seasons at Sotuba Agricultural Research Station in Mali. The experimental design used was a Split-split-plot with three replications and three factors including two plant densities (D1: 26666 plants ha-1 and D2:...

Author(s): Joseph Sékou B. DEMBELE, Boubacar GANO, Michel VAKSMANN, Mamoutou KOURESSY, Léonce Lamine DEMBELE, Mohamed DOUMBIA, Niaba TEME, Diaga DIOUF and Alain AUDEBERT,  

Challenges in greenhouse crop production by smallholder farmers in Kisii County, Kenya

October 2020

Despite the success in greenhouse farming by large scale horticultural farmers in Kenya, smallholder greenhouse farming is beset by many challenges leading to over 30% failure rates. Reasons for the high failure rate are not clearly understood. The objective of this study was to assess the challenges in greenhouse crop production by small-scale farmers in Kisii County, Kenya and provide recommendations for sustained...

Author(s): Francis Obuoro Wayua, Vincent Ochieng, Violet Kirigua and Lusike Wasilwa  

Gene action analysis studies for agronomic traits in cassava (Manihot esculenta Crantz) genotypes developed using line by tester mating design

October 2020

Despite the significance of cassava as food, feed and industrial root crop, little is known regarding the gene action determining root dry matter content (RDMC), fresh root yield, and tolerance to cassava mosaic disease (CMD), cassava green mite (CGM), and cassava mealy bug (CMB). Thus, a study was conducted to determine the general and specific combining abilities for disease, pest, RDMC, root yield and related traits...

Author(s): Kumba Yannah Karim, Prince Emmanuel Norman, Daniel Dzidzienyo, Beatrice Ifie, Peter Kulakow, Ismail Rabbi, Lucky Omoigui and Elizabeth Parkes

Determination of solar energy requirements for indirect cooling combined with evaporative cooling for storage of fresh produce

October 2020

A solar photovoltaic (SPV) system generating power to run a 53-m3 storage for indirect air-cooling combined with evaporating cooling (IAC+EC) for providing a cool environment for storage of tomatoes under small-scale farming was evaluated. The experiment consisted of nine 330 W solar modules, twelve 230 AH Gel batteries, 145 VDC solar charge controller, 5 kW inverter, 290 W ventilation fan, 260 W water pump,...

Author(s): Sipho Sibanda and Tilahun Seyoum Workneh  

Effect of nitrogen rate and intra-row spacing on yield and yield components of maize at Bako, Western Ethiopia

October 2020

Maize is highly responsive to nitrogen fertilizer rates and plant spacing. Continuous efforts have been carried out to improve the yield potential of maize by modifying their architecture through breeding methods with aim of increasing maize yield through increasing number of plants ha-1. Hybrid BH-546 is the recently released variety for this purpose but its optimum nitrogen rate and spacing has not been determined...

Author(s): Begizew Golla, Adugnaw Mintesnot and Merkeb Getachew

Cassava leaves and azolla as crude protein supplement feed to east african short horned Zebu Heifers

October 2020

The study was undertaken to explore the nutritive potential of cassava leaves and Azolla as supplementary source of crude protein to cattle fed on either mixed range grass hay or Bracharia Mulato II. Two experiments were carried out, the first was the determination of the biomass yield of Azolla, its relative growth rate and doubling time while the second was a feeding trial to determine the performance of small East...

Author(s): Bernard K.  Korir, Margaret M. M. Wanyoike, Joseph K. N. Kuria., David. M. Mwangi and Edward K. Muge  

The use of microchondrometer to assess test weight in small samples of triticales and oats

October 2020

The test weight or hectoliter weight is an important parameter used to classify the quality of the grain. Globally, it is evaluated by using 250, 500 or 1000 ml devices. Despite its importance, there is no standard equipment to assess it in small samples from the research plots. This study aims to test a newly developed microchondrometer (15.30 ml) in the triticale and oats. A second microchondrometer (31.26 ml) was...

Author(s): Lauro Akio Okuyama, Carlos Roberto Riede and Man Mohan Kohli  

Field evaluation of lentil germplasms for their resistance to Ascochyta blight (Ascochyta lentis) under field conditions

October 2020

Ascochyta blight caused by Ascochyta lentis is a fungal disease with a major importance in Ethiopia. It has the potential to cause appreciable reduction in yield. The present study was conducted to identify the sources of resistance in lentil to ascochyta blight in 2018 main cropping season in hot spot area in AlemTena research station. The total of 148 accessions were received from Ethiopian Biodiversity Institute were...

Author(s): Asrat Zewdie and Bekele Gemachu

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