African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 6562

Table of Content: 4 February 2011; 6(3)

February 2011

Control of black Sigatoka disease: Challenges and prospects

  Plantains and bananas are staple food for about 70 million people throughout the humid and sub-humid tropic of Africa. They provide an important source of revenue for small holders who cultivate them. Production, however, has always been threatened by a variety of constraints; the most overriding constraint being black Sigatoka disease caused by a wind-borne fungus, Mycosphaerella fijiensis Morelet....

Author(s): Ebimieowei Etebu and Wabiye Young-Harry

February 2011

An analysis of the HACCP system implementation- The factor of improving competitiveness in Serbian companies

  The implementation of international standards on the market represents a necessary element in the process of improving a company’s competitiveness. Customer care, healthy and safe food, ecological standards represent only some of the conditions that modern business requires from producers of food products. The implementation of the HACCP (hazard analysis and critical control point) system, that is...

Author(s): Dejan Djordjevic, Dragan Cockalo and Srdjan Bogetic

February 2011

Response of improved cassava varieties in Uganda to cassava mosaic disease (CMD) and their inherent resistance mechanisms

  Field based trials were setup to evaluate response and inherent resistance mechanisms tocassava mosaic disease (CMD) of four improved varieties; Nase 9, Nase 11, 00036 and 00057 together with Nase 4 and Bao as resistant and susceptible standards, respectively. These were grown in a CMD epidemic hotspot at Namulonge in Central Uganda. There were differences in sensitivity to CMD and...

Author(s): J. Adriko, W. S. Sserubombwe, E. Adipala, A. Bua and J. M. Thresh and R. Edema

February 2011

Determination of spring rigidity and fruit detachment force with respect to harvesting technique in pistachio nut trees

  It is necessary to identify some of the tree and fruit features in order to design and select machines that harvest fruit with mechanical methods. This work aims to identify the dynamic tree features of vibration rigid and fruit holding force for harvesting with mechanical methods. The work investigated the vibration rigid for both limb and trunk of pistachio tree. Also, it determined the effect of the...

Author(s): Refik Polat, Izzet Acar, H. I. Cem Bilim, Ramazan Saglam and A. K. Bekir Erol

February 2011

Influence of organic and conventional production systems on the quality of tomatoes during storage

  Consumers generally believe that organically grown tomatoes taste better and have higher nutritional value than their conventionally grown counterparts. The study was conducted to compare quality properties of tomato cultivars grown using organic and conventional production systems during storage at 13°C for 35 days. Results indicated that fruits grown using organic production system retained their...

Author(s): Hüsnü Ünlü, Halime Özdamar Ünlü, YaÅŸar Karakurt and Hüseyin Padem,

February 2011

An evaluation of the nutritional quality evaluation of three cultivars of Syzygium samarangense under Malaysian conditions

  A study was carried out to selected physiological and biochemical characteristics ofSyzygium samarangense for their physiological and biochemical characteristics at Functional Food Laboratory, University of Malaya, Kuala Lumpur. Various physiological and biochemical parameters were monitored during two seasons of fruit growth between October, 2009 to August, 2010 with the ‘Giant green’,...

Author(s): K. M. Moneruzzaman, A. M. Al-Saif, A. I. Alebidi, A. B. M. S. Hossain, O. Normaniza and A. Nasrulhaq Boyce

February 2011

Assessing N-use efficiency, planting time and economics of fertilizer N in rose-scented geranium (Pelargonium graveolens L’ Herit) in Western Himalayan Region of India

  A field experiment was conducted to study the effect of N levels and planting times on growth, biomass and oil yield attributes, agronomic efficiency (AE) and partial factor productivity (PFP), and economics of N application through marginal analysis. Results indicated that reducing the duration (from planting to harvesting) from December (144 days) to April (74 days) significant result in reduction in...

Author(s): Rajesh Kumar Verma, Laiq-ur-Rahman, Ram Swaroop Verma, Alok Kalra, Arun Kumar Kukreja, Anand Singh Bisht, Amit Chauhan and Suman Preet Singh Khanuja

February 2011

Household livelihood strategies and livestock benefits dependence in Gaza province of Mozambique

  Livestock provide substantial contribution to the wellbeing of many rural dwellers. However, the level of livestock use and the degree of reliance on benefits derived from livestock differs across households. The factors that condition households reliance on a particular economic activity in general and on benefits of livestock in particular way, may vary depending on the resource endowment of the household,...

Author(s): Ng’ang’a S. K., Jeannette V., Notenbaert A., Moyo S and Herrero M.

February 2011

Calculation of peanut production cost and functional analysis in Osmaniye Province of Turkey

  The aim of this study is to determine the physical input quantity used in peanut production and unit cost, and to make the functional analysis of the aforementioned production in the farms of Osmaniye province. The data used in the study belongs to 2009 growing season and they are collected by finite population sampling method from 44 farms in the 27 villages of 6 counties in Osmaniye province. The inputs...

Author(s): HaÅŸim ÖzüdoÄŸru

February 2011

Effect of substrate on vegetative growth, quantitative and qualitative production of muskmelon (Cucumis melo) conducted in soilless culture

  Greenhouses heated and irrigated by geothermic water, constitute a promoter sector in the South of Tunisia. However, simultaneous salinity of sand and water of irrigation limits amply, the development of this sector. To control salinity, it seems efficient to adopt interesting agricultural techniques like soilless culture. The selection of suitable media is the key that ensures the success of this technique,...

Author(s): Afrâa Radhouani, Mokhtar El Bekkay and Ali Ferchichi

February 2011

Use of rainfall indices to analyze the effects of phosphate rocks on millet in the Sahel

  Two critical factors that explain low crop productivity in the Sahelian agro-ecozone are inadequate moisture and poor soils, particularly phosphorus (P) deficiency. The purpose of this long-term study was to explore the use of both local phosphate rock (PR) and inorganic P on yields and risk of millet returns under the uncertain rainfall regimes in the Sahel. Using the Standardized Precipitation Index (SPI)...

Author(s): Charles F. Yamoah, Andre Bationo, Barry Shapiro, and Saidou Koala,

February 2011

Silicon application and drought tolerance mechanism of sorghum

  Pot experiments were conducted at the PMAS, Arid Agriculture University, Rawalpindi, Pakistan during 2007 repeated during 2008 to study the effect of silicon and nanoirrigation (W40) on drought tolerance mechanism of sorghum. According to experimental design, the silicon fertilization was divided into two levels: control (no application of potassium silicate) Si0 and application of silicon...

Author(s): Mukhtar Ahmed, Fayyaz-ul-Hassen, Ummara Qadeer and M. Aqeel Aslam 

February 2011

Yield and quality of garden cress affected by different nitrogen sources and growing period

  The effects of different months of the year and nitrogen sources on garden cress (Lepidium sativum L.) yield, quality and nitrate accumulation were investigated during the years 2002 and 2003. In both years, seeds were sown on the first days of September, October, November, January, February and March. Three different nitrogen sources were used: Farmyard (cattle) manure (100 ton·ha-1),...

Author(s): Özlem Tuncay, Dursun EÅŸiyok, Bülent YaÄŸmur and Bülent Okur

February 2011

Sunflower (Helianthus annuus L.) hybrids seeds distribution modelling: Normal, lognormal and weibull models

  Sunflower (Helianthus annus L.) is one of the most cultivated oil crops in the world. Seed oil of cultivated sunflower has good quality that they are important source of unsaturated oil. Various types of cleaning, grading and separation equipment are designed on the basis of the physical properties of grains or seeds. However knowing the average of seed dimensions are important in designing some...

Author(s): Hussein Oraki, Iraj Alahdadi and Fataneh Parhizkar khajani

February 2011

Storage of apple pollen and in vitro germination

  Temperate fruits including pome fruits, especially apple are important fruit crops which mostly for fruit set needs the pollination of flowers and followed by pistil fertilization. Therefore, pollen viability and its germination capability are essential. For that reason, examination to optimize the pollen medium of apple and determination of the best medium was carried out with 16 types of culture medium...

Author(s): Ali. Imani, ,Kazem. Barzegar , Saeed Piripireivatlou and Seiyed Hassan Masomi

February 2011

Genetic analysis of resistance to common smut in maize (Zea mays L.) using triple test cross

  Understanding of gene action for resistance to maize common smut is essential for maize breeding programs, therefore, triple test cross analysis was employed to assess gene action controlling resistance to common smut in maize. Parental inbred lines and their progenies were evaluated using randomized complete block design with three replications in Karaj Field Station, Seed and Plant Improvement Institute, in...

Author(s): Anita Namayandeh, Rajab Choukan, Seyed Abolghasem Mohahhadi, Mohammad Mojtaba Kamelmanesh, Sasan Ghasemi, and Eslam Majidi Hervan

February 2011

Physiological behavior of wheat genotypes from Algerian semi-arid regions grown under salt stress

  The performances of the Algerian local genotypes Mohamed Ben Bachir and Oued Zenati tested under NaCl stress, show an ability to withstand moderate salt concentrations. It appears that salinity affected normal physiological functions of wheat genotypes. This was expressed by the imbalance in water relation, mineral balance and proline accumulation in the two genotypes. It was noted that these genotypes showed...

Author(s): Chorfi Abdelmalek and Taïbi Khaled,

February 2011

The effects of supplementing an organic acid blend and/or microbial phytase to a corn-soybean based diet fed to broiler chickens

  This experiment was designed to investigate the effects of supplementation with phytase, either alone or in combination with an organic acid blend on growth performance, some internal organs measurements and tibia development, intestinal and cecal microbiology. One-day-old male Ross 308 strain broiler chickens (n=140) were allocated to 5 dietary treatments in a randomized complete block design. The treatments...

Author(s):   Hasan Akyurek, Mehmet Levent Ozduven, Aylin Agma Okur, Fisun Koc and Hasan Ersin Samli

February 2011

Agronomic suitability of effective micro-organisms for tomato production

  A field experiment was conducted during the 2004-2005 summer season to evaluate the agronomic suitability of effective microorganism (EM) for improvement of crop productivity and quality through enhanced soil microbial activities and pest and disease suppression. Tomato (Lycopersicon esculentum Mill) was used as a test crop. Treatments included: control, effective microorganism, mineral fertilizer,...

Author(s): Lindani Ncube, Pearson Nyari S. Mnkeni and Marc Olivier Brutsch

February 2011

The effects of different planting densities on seed yield and quantitative traits of rainfed chickpea (Cicer arietinum L.) varieties

  A field experiment was conducted to evaluate effect of planting density and variety on the grain yield and yield components of chickpea .The present research was conducted in the Agricultural Research Station, College of Agriculture, Islamic Azad University, Kermanshah Branch, Iran .The factorial experiment was based on complete randomized block design with four replication. In this experiment; the variety in...

Author(s): Keyvan Shamsi, Soheil Kobraee and Behrooz Rasekhi

February 2011

Effect of different pesticide application methods on spray deposits, residues and biological efficacy on strawberries

  In agricultural food production, positive results can be obtained by using appropriate pesticides through the application of appropriate methods. In this study, we aimed to determine the effects of different spraying methods on spray deposits and drift, pesticide residues and biological efficacy on strawberries. For this purpose, strawberries were sprayed with dicofol by broadcast and band spraying....

Author(s): Nigar Yarpuz-Bozdogan, Ekrem Atakan, Ali Musa Bozdogan, Huseyin Yilmaz, Nebile Daglioglu, Tunahan Erdem and Ebru Kafkas

February 2011

Determination of optimum dose and frequency of application of free-living diazotrophs (FLD) on lettuce

  Free-living diazotrophic isolates L1 (Bacillus cereus Frankland) and Br2 (Bacillus subtilisEhrenberg Cohn) were evaluated in greenhouse trials for their optimum dose and frequency of application on seedlings of a single lettuce variety (Great Lakes) in a composted pine bark medium. Bacterial isolates were grown in Burke’s broth and were applied as a drench at four different...

Author(s): M. H. Kifle and M. D. Laing

February 2011

Study of the natural and fishing mortality and exploitation rates of bigeye kilka (Clupeonella grimmi) in the southeast part of the Caspian Sea (Babolsar)

  The natural, fishing and total mortality survival and exploitation rates of bigeye kilka were studied. The survival rate and natural mortality were calculated using catch curve and Pauly methods, respectively. Natural and fishing mortality have been estimated up to 0.881 and 0.309 yr-1, respectively. According to the catch curve method, the annual survival rate of bigeye kilka has been estimated to be 0.304...

Author(s): Ghasem Karimzadeh

February 2011

A study on the effects of different biofertilizer combinations on yield, its components and growth indices of corn (Zea mays L.) under drought stress condition

  In order to study the combined effects of chemical phosphorus fertilizer, Phosphate-solubilising bacteria and mycorrhizal fungus they were determined on reducing drought stress damages of grain corn (SC704) under field conditions at College of Abouraihan, University of Tehran. The experiment was conducted as split plot RCBD with three replications. Experimental factors were drought stress as the main-plot...

Author(s): Mehdi Zarabi, Iraj Alahdadi, Gholam Abbas Akbari, and Gholam Ali Akbari

February 2011

Genetic analysis of some quantitative traits in bread wheat across environments

  Performance of eight bread wheat (Triticum aestivum L.) genotypes; namely, Wafaq-2001, Takbeer, Tatara, Iqbal-2000, Margalla-99, Ghaznavi-98, Khattakwal and Inqalab-91, were evaluated under three diverse environments (early, normal and late sown conditions) through an 8x8 diallel cross. Observations were recorded on days to heading, productive tillers plant-1, number of grains spike-1, 1000-grain...

Author(s): Farhad Ahmad, Saleem Khan, Sahibzada Qayyum Ahmad, Hakim Khan, Ayub Khan and Fida Muhammad

February 2011

Gene action of some agronomic traits in corn (Zea mays L) using diallel cross analysis

  In 2007, seven inbred lines of corn were crossed in a complete diallel cross design (Griffing's method 1). The seven parents and their 42 hybrids were planted in field based on Random Complete Block Design (RCBD) with three replications in two different environments. The studied traits were days from emergence to silking, days from emergence to physiological maturity, plant height, ear height, area of ear...

Author(s): Mahdi Zare, Rajab Choukan, Eslam Majidi Heravan, Mohammad Reza Bihamta, and Kourosh Ordookhani

February 2011

Production and marketing structure of large scale forestry products industry enterprises in Turkey

  In Turkey, a country with 21.2 million ha of forest land, it is evident that the processed forest products have not been able to be developed to realize their potential with regards to the exports possibilities. It is obvious that the situation is to the disadvantage of Turkey in terms of the trading equilibrium when the exports and imports figures are examined. According to the results of the research...

Author(s): Baki Aksu, K. Hüseyin Koç and Ahmet KurtoÄŸlu

February 2011

Hydrogel substrate alleviates salt stress with increase antioxidant enzymes activity of bean (Phaseolus vulgaris L.) under salinity stress

  The effect of varying hydrogel (0, 0.05 and 0.1% w/w) supply on major antioxidant enzyme (super oxide dismutase, SOD; catalase, CAT and peroxidase, POD) activity, membrane permeability and salt tolerance index (STI) of bean plants in different salt source and doses stress were investigated. Plants were treated with eight salt sources (NaCl, Na2SO4, CaCl2, CaSO4, KCl, K2SO4, MgCl2, and MgSO4) and four...

Author(s): Adil AYDIN, Canan KANT and Metin TURAN

February 2011

Effect of straw mulch application on nutrient concentration in runoff and sediment in a humid region in Kenya

  Straw mulch use has been studied extensively especially for soil erosion and runoff control in arid and semi-arid regions but few studies have been done with regard to nutrient loss and accumulation in humid climate regions in Africa. The objective of the present study was to investigate the effects of straw mulch application using different methods on nutrient loss and accumulation in a humid region in...

Author(s): I. I. C. Wakindiki and B. O. Danga,

February 2011

Responses of Oryza glaberrima accessions to rice stresses and their morphological characteristics

  Oryza glaberrima accessions were characterized for their tolerance to drought, African rice gall midge, blast and some agronomic traits to source for donor resistant genes. The experiment was conducted at both Badeggi and Edozhigi. The blast and drought experiments were drilled in a single row of 70 cm each spaced 20 cm apart at Badeggi. While the African rice gall midge and morphological...

Author(s): Maji A. T., Gana A. S. and Ukwungwu M. N.

February 2011

The evaluation of existing and proposed active green spaces in Konya Selçuklu District, Turkey

  Urban green spaces have social, planning, economic and ecological functions. To benefit functions of green spaces, it is important to make sufficient provision of quality and quantity green space within urban areas. In this study, the adequacy of the active green spaces in Selçuklu district were investigated in terms of spatial quantity and access by walking in urban development plans and existing...

Author(s): Serpil Onder, Ahmet T. Polat, and Sebahat Korucu

February 2011

A canker and dieback disease is threatening the cultivation of Grevillea robusta on small-scale farms in Kenya

  A canker and dieback disease was recently reported on Grevillea robusta in east Africa but little was known about its magnitude, distribution and associated pathogens. In our survey of the disease approximately 36% of 17,994 G. robusta trees assessed showed canker and dieback symptoms. Disease index increased from the humid zone (18%) and to the semi-arid zones (67%). Tree...

Author(s): Jane W. Njuguna, Pia Barklund, Katarina Ihrmark and Jan Stenlid

February 2011

Assessing the innovative nature of the agricultural based small businesses in Rwanda -The case study of the coffee industry

  Innovation is one of the characteristics that distinguish an entrepreneurial venture from one that is non-entrepreneurial. In a situation where undifferentiated mass production is the defining feature of the global coffee industry, some Rwandan coffee producers have undertaken innovative actions in branding and niche marketing by developing speciality coffees. Though Rwandan farmers could in the past survive...

Author(s): A. J. Antonites and J. J. Haguma

February 2011

Cultivation of Calocybe indica (P and C) during different months and influence of temperature and relative humidity on the yield of summer mushroom

  The present study was conducted with the aim of finding out the most favourable month for the cultivation of Calocybe indica and records the influence of temperature and relative humidity on mushroom yield. Significant variation in the yield and other parameters existed when C. indica was grown during different months of 2004 to 2005. In summer months (March to July), a general increase in...

Author(s): D. Senthilnambi, A. Eswaran and P. Balabaskar