Evaluation of potato (Solanum tuberosum L.) varieties for yield and yield components
March 2019
Lack of well adapted potato (Solanum tuberosum L.) varieties is a production problem accounting for low yield. Farmers grow local landraces. A field experiment was conducted to investigate the performance of potato varieties for yield and yield components from 2013 to 2015 under rain fed condition using improved varieties and a local landrace. There were differences among varieties for all traits. Year had little effect...
Effect of blended chemical fertilizer (sulfur, nitrogen and phosphorus) on yield and yield components of potato (Solanum tuberosum L.) in the rainy season
March 2019
Potato is the fourth most important crop and consumed all around the world and is one of the main favorite vegetable in Ethiopia. However, the national productivity is very low as compared to the potential of the crop. One of the main reason for low productivity is low soil fertility. Hence, a field experiment was conducted from 2016-2018 with 9 combination of nitrogen, phosphorous and sulfur fertilizers arranged...
Comparative field survival and growth of selected Ethiopian native tree species and the effect of whole soil arbuscular mycorrhizal fungi inoculation
February 2019
Tree species selection and seedlings lack of infective arbuscular mycorrhizal fungi (AMF) could potentially contribute to low forest restoration success in Ethiopia. Hence, we evaluated the comparative field performance of Cordia Africana (C. africana), Juniperus procera (J. procera), and Podocarpus falcatus (P. falcatus) seedlings and the effect of whole soil AMF inoculation. Seedlings prepared using the existing...
Socio-economic importance of highland bamboo (Yushania alpina K. Schum) and challenges for its expansion in Bibugn District, East Gojjam, Ethiopia
February 2019
Highland bamboo (Yushania alpina) plays an important role in various socio-economic aspects in Ethiopia. However, these socio-economic roles and the associated challenges have not been studied in Bibugn District of East Gojjam, Ethiopia. Therefore, this study was conducted to assess the socio-economic importance of highland bamboo and the associated challenges for its expansion. For this study, four rural sub-districts...
Evaluation of morphological diversity of tamarind (Tamarindus indica) accessions from Eastern parts of Kenya
January 2019
Tamarind is native to tropical parts of Africa and Asia. It shows considerable phenotypic variation in morphological and horticultural traits that can be utilized in its genetic improvement. In Kenya, there exists a wide range of tamarind germplasm that has not been characterized. Initial characterization is based on morphological descriptors. The objective of this study is to evaluate morphological diversity of...
Ecological assessment of plant diversity and associated edaphic and topographic variables in the Gra-Kahsu forests of Ethiopia
January 2019
The study was conducted to assess the influences of edaphic and topographic variables on plant diversity on the slopes of Gra-kahsu forest area. Collection of vegetation data was made using systematic sampling methods, laying 19 transects and 62 quadrats, each with 20 m × 20 m for trees and 5 m × 5 m for shrubs. In each quadrat, heights (1.5 m), diameters (2.5cm) and numbers of woody species, level of...
Effect of manure and nitrogen rates on growth and yield of garlic (Allium sativum L.) at Haramaya, Eastern Ethiopia
October 2018
An experiment was conducted at Haramaya University, Horticulture Research Field, Haramaya during the period from 13 August, 2010 to 17 January, 2011 to investigate the effect of manure and different levels of nitrogen on yield and yield attributed traits. A local garlic cultivar was used for the study. The treatments consisted of four levels of nitrogen (0, 50,100 and 150 kg/ha) and three levels of goat manure (0, 10...
Farmer’s traditional practices and management methods of stored common bean (Phaseolus vulgaris L.) insect pests in the central region of Benin Republic
September 2018
Common bean (Phaseolus vulgaris L.) is a legume that contributes to food security and poverty reduction in Benin. However, there is very little information on its production constraints, varietal diversity, storage practices, storage insect management, and seed system. While these information are necessary for use in breeding programs and a better conservation of this legume. To fill these gaps, ethnobotanical surveys...
Impact of land-use on tree and fruit morphometric variation of the bitter kola (Garcinia kola Heckel) in Benin: Insight for domestication and production.
September 2018
Garcinia kola is an IUCN globally vulnerable species native in Benin where it is extinct in the wild. It is also one of the top ten priority non-timber forest products in Benin because of its socio-economic and medicinal values. Still, G. kola is neglected and underutilized. The morphological variation of G. kola traits was investigated in two land-use types (home gardens versus farmlands) where it is found in Benin...
Effects of seed pre-treatments on the germination and early growth of Echinops giganteus C.D Adam
August 2018
This study aims to evaluate the effects of seed pre-treatments on the germination of Echinops giganteus. The pre-treatments used were partial manual removal of the pappus (T1), total removal of the pappus (T2), roasting for 2 min (T3), roasting for 4 min (T4), roasting for 6 min (T5), soaking in water for 6 h (T6), soaking for 12 h (T7), soaking for 24 h (T8) and the control (T0). The experiment was laid out in a...
Multiplication of a woody forest gallery species: Pterocarpus santalinoides L’Hér. ex DC.
June 2018
With climatic change, and despite their protection by the Malian forest code, species characterizing the natural forest galleries of rivers in southern Mali are threatened with extinction because of the development of agricultural parcels. A study of seeds germination and the growth of branch cuttings of Pterocarpus santalinoides L’Hér. ex DC. were carried out for multiplication of this typical gallery...
Effect of inorganic NP fertilizers and vermicompost on growth, seed yield and yield components of onion (Allium cepa L.) at Maitsebri, northern Ethiopia
June 2018
The NP fertilizer or organic resources alone may not provide sufficient amounts or may be unsuitable for alleviating specific constraints to crop production. Therefore, a field experiment was conducted at Maitsebri Research Station of Shire-Maitsebri Agricultural Research Center (SMARC) to study the effect of inorganic NP fertilizers and vermicompost on growth, seed yield and yield components of red onion (Allium cepa...
Effects of volumetric soil water content and fertilizer rate on growth and baicalin accumulation in two species of Scutellaria
June 2018
Scutellaria or skullcap is a genus containing approximately 350 species of flowering plants, many of which are sold and marketed for their medicinal value. Flavonoids found in Scutellaria spp. have demonstrated anti-inflammatory, antiviral, sedative, antithrombotic and antioxidant affects. Baicalin, a flavonoid produced by Scutellaria spp., is an important compound used to treat anxiety. Scutellaria spp. have potential...
Growth and yield of potato (Solanum tuberosum L.) cultivars as influenced by plant spacing at Haramaya and Hirna, Eastern Ethiopia
May 2018
A field experiment was conducted at Haramaya and Hirna during the main cropping season of 2013 to determine the appropriate plant spacing for potato cultivars in relation to growth and yield. The treatments consisted of five seed tuber spacing (75 cm × 30 cm, 60 cm × 30 cm, 60 cm × 25 cm, 50 cm × 25 cm and 45 cm × 20 cm) and four potato varieties (Bubu, Badhassa, Zemen and Chiro). A...
On-farm demonstration and evaluation of improved lowland sorghum technologies in Daro Lebu and Boke districts of West Hararghe Zone, Oromia National Regional State, Ethiopia
May 2018
This experiment was conducted in Daro Lebu and Boke districts of West Harerghe Zone with the objectives of evaluating lowland sorghum varieties on farmer’s field and creating linkage and networking among stakeholders. Three kebeles were selected purposively based on sorghum production potential, two kebeles from Daro Lebu and one kebele from Boke district. Five farmers and one Farmer Training Center participated...
Evaluation of selected botanical aqueous extracts against cabbage aphid (Brevicoryne brassicae L. (Hemiptera: Aphididae) on cabbage (Brassicae oleraceae L.) under field condition in Kobo District, North Wollo, Ethiopia
May 2018
Cabbage is one of the most important vegetable crops under cultivation throughout the world, especially in Africa including Ethiopia. Cabbage aphid is a sap sucking insect pest that damage cabbage. Growers use synthetic chemicals to control cabbage aphids. The aim of this study was to evaluate the efficacy of Azadirachta indicae, Otostegia integrifolia and Crinum ornatum aqueous extract against cabbage aphids. The field...
Influence of climate on fruit production of the yellow plum, Ximenia americana, in Burkina Faso, West Africa
April 2018
Fruits of Ximenia americana have socio-economic value for the local people in West Africa. Understanding the possible influence of climate conditions on fruit production is a basis for better exploitation planning and sustainable management of the species. This study aims to assess the fruit production of X. americana according to tree size across a climatic gradient. The mean total number of fruits, the mean weight of...
Impact evaluation on survival of tree seedling using selected in situ rainwater harvesting methods in Gerduba Watershed, Borana Zone, Ethiopia
April 2018
Establishing forest plantation on degraded rangelands play a key role in forest rehabilitation processes through afforestation or/and reforestation. In-situ rainwater harvesting has positive impact on seedling survivals at degraded rangelands. A quadrant of 10 m × 10 m of five times replication at three slope classes under area enclosure was used. Both survived seedlings and soil physical parameters were collected...
Collection and characterization of garlic (Allium sativm L.) germplasm for growth and bulb yield at Debre Markos, Ethiopia
March 2018
Garlic (Allium sativm L.) is the most widely used crop among cultivated Allium species in Ethiopia and it has a wide range of climatic and soil adaptation. Production of the crop is confronted with a number of problems and the total production and productivity in the country is low. Among many contributing factors, lack of improved varieties and garlic rust are the major ones. In view of this, an experiment was carried...
Determinants of outlet choices by smallholder onion farmers in Fogera district Amhara Region, Northwestern Ethiopia
March 2018
Market outlet choice for small holder onion producers is mandatory, since onion crop is a perishable horticultural crop. This study was aimed at assessing determinant of market outlet choice by smallholder onion farmers in Fogera District of Ethiopia. A stratified random sampling technique was employed, to select 150 onion producers in the study area. Multivariate probit model was employed to identify the factor...
Determination of the economic threshold level of tomato leaf miner, Tuta absoluta Meyrick (Lepidoptera: Gelechiidae) on tomato plant under glasshouse conditions
February 2018
Tomato leaf miner, Tuta absoluta (Meyrick) (Lepidoptera:Gelechiidae) is an important pest of tomato crops native to South America. It is considered to be one of the major pests of tomato crop in Ethiopia since 2012. The aim of this study was to determine the economic threshold level of T. absoluta under glasshouse conditions. The damage potential and economic threshold level for T. absoluta larvae on tomato crop were...
Physico-chemical properties of soil under the canopies of Faidherbia albida (Delile) A. Chev and Acacia tortilis (Forssk.) Hayen in park land agroforestry system in Central Rift Valley, Ethiopia
January 2018
This study was conducted to evaluate the effect of Faidherbia albida and Acacia tortilis on soil physico-chemical properties at Langano and Tuka in farm fields of Bora District where both trees are traditionally retained on the farm. At each site, four F. albida and four A. tortilis trees were purposively selected and soil sample collected from four directions at three distances (1.35, 3.35 and 26.35 m) from tree trunk...
Assessment of beekeeping production system and constraints in Sude Woreda, Arsi Zone Oromia Ethiopia
December 2017
The study was conducted in Arsi Zone Sude Woreda, Oromia region, Ethiopia aims to assess beekeeping production systems and constraints. Totally, 90 households were selected for the study. Semi structured questionnaire was prepared to collect primary data. The collected data were analyzed using descriptive statistics and the results were organized by tables and graphs. Based on the survey result, about 97% of the...
Trees species diversity in perennial crops around Yapo protected forest, Côte d’Ivoire
November 2017
The potential of agricultural landscapes for tree species diversity conservation in perennial crop was examined in the Southeast of Côte d’Ivoire. Based on botanical survey of trees and shrubs species, the beta diversity has been assessed and diversity profile, species accumilation curves, and rank abundance have been compared from 70 plots of 500 m2 selected in the Yapo Protected Forest (YPF), a Voluntary...
Growth responses of branch cuttings of Cordia africana to physiological age
October 2017
The use of accurate cutting age in vegetative propagation is a key element in improving plant performance. To investigate the effect of physiological age on Cordia africana, branch cuttings from 1-3-, 8-10- and ≥15-year-old trees were grown under open-field conditions for two months. The cuttings were monitored for flushing and growth. The number of days to flushing was lowest for the 8-10-year-old and highest for...
Yield improvement in hot pepper through demonstration of improved variety (Melkashote) with improved production technologies under irrigation scheme, Abergelle, Tigray, Ethiopia
September 2017
The demonstration was conducted in 2014/15 production season at Tanqua-Abergelle district, particularly at Hadash-Tekhli (Zembaw) irrigation scheme at farmers’ land. The scheme has high irrigation potential for horticultural crops production. But, improved technologies have not yet demonstrated. Therefore, the objective of this research was to demonstrate improved variety of pepper with improved management...
Vegetative propagation of selected clones of cocoa (Theobroma cacao L.) by stem cuttings
September 2017
The government of Cameroon is responsible for distributing hybrid cocoa seeds to farmers in Cameroon. These high-yielding and pod rot-resistant hybrids are obtained from self-incompatible commercial clones used for seed production by manual pollination of freshly opened flowers. The experimental procedure for the propagation technique of these clones has never been reported. The objectives of this study are to assess...
Biology of Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae) under different temperature and relative humidity
August 2017
Tomato leaf miner, Tuta absoluta (Meyrick) is a pest of Solanaceae crops, particularly tomato (Lycopersicon esculentum (Miller)) and potato (Solanum tuberosum Linnaeus) in the world. There are different records on the biology of T. absoluta in the world mainly due to variations in temperature and relative humidity. In Ethiopia, night temperature is very low and day temperature is very high. Due to this reason, it is...
Management of root-knot nematode Meloidogyne incognita (Kofoid and White) Chitwood in Tomato (Lycopersicon esculentum Mill. through poultry manure and rapeseed cake
July 2017
Study was conducted in Diredawa Haramaya University Research Station in naturally root-knot nematode infested soil to determine the effect of poultry manure and rapeseed cake against root-knot nematode infestation and yield of tomato var. Mraglobe. Five levels of poultry manure (0, 5, 10, 15 and 20 ton/ha) and three levels of rapeseed cake (0, 100 and 200 kg/ha) were applied in experimental plot three weeks before...
Effect of seasonality, graft type and scion characteristics on propagation of Vitex payos in the drylands of Kenya
June 2017
This study focused on Vitex payos (Lour) Merr. which is a high valued indigenous fruit tree known for its social (nutritional and medicinal use) and economic potential in Kenya. However, domestication of this species is hampered by limited information on its vegetative propagation. The objective of the present study was to determine the effect of seasonality and grafting methods on graft take-off and survival. Scions...
Growth and survival rate of endemic trees of Ethiopia: Olea africana and Hagenia abysinicca in Lake Haramaya Watershed, Eastern Ethiopia
May 2017
The study was conducted to explore the growth and survival rate of the native tree species of Ethiopia, Olea africana and Hagenia abysinicca in Lake Haramaya Watershed, Eastern Ethiopia. Three sub watersheds of Lake Haramaya Watershed, namely, Bachake, Damota, and Tinike were selected purposefully on the basis of their extreme degradation and nearby vanished Lake Haramaya. In each sub watersheds, a total of about 12...
Farmyard manure and intra-row spacing on yield and yield components of Adama Red onion (Allium cepa L.) cultivar under irrigation in Gewane District, Afar Region, Ethiopia
May 2017
A field experiment was conducted at Gewane Agricultural Technical and Vocational Education and Training College in 2012/2013 to assess effect of farmyard manure and intra-row spacing on yield and yield components of Adama Red onion (Allium cepa L.) cultivar under irrigation. Factorial combination of four rates of farmyard manure (0, 10, 20 and 30 t ha-1) and four levels of intra-row spacing (7.5, 10, 12.5 and 15...
Survey on distribution and significance of White Mango scale (Aulacaspis tubercularis) in Bench-Maji Zone, Southwest Ethiopia
April 2017
This research was initiated following the outbreak of Aulacaspis tubercularis in bench Maji zone with the objective to assess information about occurrence and extent of pest infestation and distribution. Informal survey was conducted first to have a better insight and identify the major pest infested areas. Accordingly, three infested Kebeles namely, Otowa chole, Kuja and Berji in Guraferda woreda were purposefully...
Characterization of potato production, marketing, and utilization in North Western Amhara Region, Ethiopia
March 2017
Characterization of potato production, marketing and utilization were undertaken in four zones of North Westren Amhara Region namely West Gojjam, East Gojjam, South Gonder and Awi based on their potato production on 158 farmers in 2010 to 2011. The main objective of the study was to characterize and document as well as to assess the challenges of existing potato production, marketing and utilization systems based on...
Profitability of potato (Solanum tuberosum L.) as affected by NP nutrition and variety in Southern Ethiopia
February 2017
Profitability of different rates of nitrogen (N), phosphorus (P) and five potato varieties (Bellete, Gudene, Jalene, Marachere and local check) was investigated in southern Ethiopia to find out rates of the nutrients and varieties that would give acceptable returns and likely to be adopted by smallholder farmers in the locality. Factorial combination of N (0, 55.5 and 111 kg/ha) and P (0, 19.5 and 39 kg/ha) were applied...
Effect of nitrogen and potassium application rates on nitrogen use efficiency and tuber minerals content in central high lands of Ethiopia
January 2017
An experiment was conducted on a Nitisol of Holetta agricultural research and Jeldu Sub-center using three factors such as potato varieties (Belete, Jalenie and Gudanie), nitrogen rates (87, 110 and 133 kg/ha) and potassium oxide rates (0, 34.5, 69 and 103 kg/ha) that were arranged on randomized complete block design with three replications. The data were subjected to Proc GLM model of SAS software version 9.2....
Influence of root and shoot pruning on field establishment and growth of overgrown cashew (Anacardium occidentale L.) seedlings
October 2016
Delayed planting of cashew seedlings coupled with the erratic weather conditions in Ghana has often led to high transplant mortality of over grown cashew seedlings. This experiment was carried out in the Guinea savanna zone of Northern Ghana to study the effect of root and shoot pruning on the survival and field performance of overgrown (4 to 7 months old) cashew seedlings. The experiment was laid out in a randomized...
African spider plant (Cleome gynandra L.) as biofumigant against weeds during Turfgrass (Paspalum notatum) establishment
September 2016
Weeds are the most common pests, which interfere with turfgrass establishment and uniformity lowering functional and aesthetic quality of lawns. Killing weed seeds or suppressing their germination is necessary before establishing new lawn to prevent weeds from gaining a foothold hence, giving turfgrass a competitive advantage. A field study was conducted at Bukura Agricultural College, Kenya, to explore the...
In vitro regeneration of Mango (Mangifera indica L.) cv. Baramasi through nucellar embryogenesis
August 2016
Vegetative propagation via grafting is a common method to propagate mono-embryonic mango (Mangifera indica L.) varieties in Oman which is time consuming and expensive. Standardize in-vitro regeneration protocol in producing true-to-type, disease free and homogeneous high quality plants is prerequisite. Nucellar tissues from immature mango fruits of mono-embryonic cv. Baramasi were used as explants to induce somatic...
Effects of negarim and semi-circular structures on growth and yield of banana in moisture deficit area of Daro Labu District, West Hararghe Zone, Ethiopia
July 2016
The study was conducted for three consecutive years (2011/2012 to 2013/2014) to evaluate the growth and production of banana (Robusta variety) with different water harvesting structure in Daro Labu districts of Oda Leku peasant association. The water harvesting structures used as treatments were semi-circular bund with and without mulch, negarim micro catchment with and without mulch and normal pit with and without...
Genetic diversity among four genotypes from Hibiscus rosasinensis in relation to drought stress
June 2016
The effect of drought stress on growth and water relations of four Hibiscus genotypes was investigated. Drought stress significantly retarded vegetative growth as analyzed by plant height, stem diameter, leaf area, fresh and dry weight. The osmotic potential (ys) values decreased with increasing drought time, and the decrease was more pronounced in Fantasia followed by Jay´s orange. Osmotic adjustment (O.A.)...
Assessment of tree species distribution and diversity in the major urban green spaces of Nairobi city, Kenya
May 2016
Plant composition of urban green spaces is an important component of urban ecosystem as it influences the provision of many environmental and social services that contribute to the quality life. In Nairobi, a few remnants of continuous highland forest exist but they are under increasing pressure from the rapidly changing surrounding landscape. The plant composition is being altered by human encroachment and other...
Influence of mulching and varieties on growth and yield of tomato under polyhouse
January 2016
The experiment was conducted to study the effect of mulch on growth and yield of tomato varieties under polyhouse condition at Bahir Dar, Ethiopia in 2012 and 2013. The treatments were 4 × 2 factorial combinations of mulching material (Black plastic mulch (BPM), White plastic mulch (WPM), Grass mulch (GM) and no mulch with two varieties (Cochoro and Miya). White plastic mulch recorded significantly tallest plant...
Exploring people’s preferences on specific attributes of urban forests in Washington DC: A conjoint approach
November 2015
The study uses conjoint analysis to determine the preferences of different groups of people on specific urban forest attributes such as plant variety, planting pattern, color variety and growth form. A year-long face-to-face survey was employed to collect data and conjoint analysis was conducted to estimate the relative importance of the attributes as well as the part-worth values of the specific levels under each...
Changes in flavonoids concentration of Hawthorn (Crataegus pinnatifida) in response to exogenous amino acids
October 2015
Hawthorn (Crataegus pinnatifida Bge.) flavonoids constituents have recently received greater attention for their health and medical properties. In order to relgulate the flavonoids constituents, one-year-old hawthorn plants were subjected to foliar application of L-glutamic acid (GLA, 800 mg L–1 ), glycine (GLY, 20 mg L–1), L-phenylalanine (PHE, 20 mg L–1), L-arginine (ARG, 20 mg L–1). The...
Effect of climatic conditions on flowering and fruiting of Tamarindus indica (Fabaceae)
August 2015
This study examined effects of climatic conditions on patterns of flowering and fruiting of tamarind (Tamarindus indica L.). Data were recorded over a period of 26 months in two contrasting climatic zones. The monitoring revealed that irrespective of climatic zones, flowering starts by the end of the dry season when hygrometry begins to rise and lasts two to three months. Fruiting begins around the peak of the rainy...
Nutrient status of potato (Solanum tuberosum L.) tubers and lettuce (Lactuca sativa L.) leaves produced along the bank of River Beressa
August 2015
The discharge of untreated solid and liquid wastes containing toxic heavy metals (Cr, Pd, Ni, Hg and As) from municipal and industrial activities has deteriorate the potential of Beressa River water mainly for irrigation purpose and affect the chemical property of soils and vegetables grown along the bank. Thus, this work was conducted to assess the concentrations of both essential nutrients (Ca, Mg, K, P, N, Mn, Fe, Cu...
Vegetation composition and dynamics along degradation gradient of Kiang'ombe hill forest in the drylands of Kenya
July 2015
Kiang'ombe hilltop forest is overexploited for fuel wood, charcoal, timber and non-wood forest products, thus threatening its biodiversity conservation role. The extent of forest degradation is not yet quantified and this impedes rehabilitation interventions. This study was conducted to evaluate the status of Kiang'ombe forest resources to initiate rehabilitation interventions and to support sustainable forest...
Uses and preferences of woody species in two protected forests of Dan Kada Dodo and Dan Gado in Niger
June 2015
An ethnobotanical survey was carried out on 31 woody species recorded in the protected forests of Dan Kada Dodo and Dan Gado in south-central Niger. Semi-structured interviews with local population were conducted between June and September 2012 in seven bordering villages in which five are predominantly from the Hausa ethnic group and two are from the Fulani ethnic group. A total of 256 people were randomly selected and...
Phenotypic traits of Carapa procera fruits from riparian forests of Burkina Faso, West Africa
June 2015
Investigating phenotypic variation in fruit traits constitute an important base for biodiversity assessment and domestication. The present study was carried out in order to assess the diversity of phenotypic traits of Carapa procera fruits. A total of 430 fruits were collected on 43 trees, and their surface aspect, length, width, weight, number of carpels and number and weight of seeds were recorded. Hierarchical...
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