African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 6862

Table of Content: February 2009; 4(2)

February 2009

Determining the chilling requirements of four Pistachio cultivars in Semnan province (Iran)

Most deciduous trees enter dormancy in respect to the shortening day length in fall; dormant buds re-quire a period of chilling to break this rest. The present research was carried out under laboratory conditions in order to determine the chilling requirements of 4 local cultivars of Damghan city. In this experiment some traits of flower bud breaking of mentioned cultivars in different chilling times (500, 600, 700,...

Author(s): Hossein Afshari, Ali Tajabadipour, Hossein Hokmabadi and Mehdi Mohamadi moghadam

February 2009

Effects of indol–3-butyric acid (IBA), plant growth promoting rhizobacteria (PGPR) and carbohydrates on rooting of hardwood cutting of MM106 Apple rootstock

This investigation was conducted to evaluate the effects of a range of indole-3-butyric acid (IBA) concentrations (1000, 2000 and 4000 ppm), two strains ofAgrobacterium rubi (A-18) and Bacillus subtilis (OSU-142) and four carbohydrates (Glucose, Sucrose, Sorbitol and Mannitol) alone, in combination with two and three treatments on the rooting capacity of the hardwood cuttings of MM106 apple rootstock in...

Author(s): Halil Karakurt, Rafet Aslantas, Gursel Ozkan and Muharrem Guleryuz

February 2009

Awareness and effectiveness of vegetable technology information packages by vegetable farmers in Adamawa State, Nigeria

Dry season vegetable production plays a key role in agricultural economics of Adamawa state, as a basic source of food, income and employment especially for resource poor farmers.  This study evaluates the awareness and effectiveness of agricultural technology information by dry season vegetable farmers in Mubi region. Findings revealed that the vegetable production is gender sensitive to the male sex. Most...

Author(s): Sabo Elizabeth and Dia Y. Zira

February 2009

Land marketing and hedonic price model in Turkish markets: Case study of Karacabey district of Bursa province

The aim of this study is to identify the variables affecting land value. Examined land was selected from farms in Karacabey district of Bursa province. Data was collected from 54 farmers by using survey methods and from second sources on farms. A hedonic price analysis was conducted to determine the marginal return to different land characteristics using an econometric model corrected for correlation. Parcel...

Author(s): Hasan Vural and Halil Fidan

February 2009

Effects of age and height of onion (Allium cepa L.) plants on infestation thrips, Thrips tabaci Linderman ((Thysanoptera: Thripidae) in Sokoto, Nigeria

Three sets of onion (Allium cepa L.) crops transplanted at 4 week intervals were exposed to thrips, Thrips tabaci Lindeman (Thysanoptera, Thripidae) infestation at different times from February to May in 2001 - 2002 and 2002 - 2003. Results indicated that at 4, 8 and 12 weeks after transplanting (WAT), the oldest (12 weeks) and tallest (60 cm) plants had the highest thrips population of 240...

Author(s):   Ibrahim N. D. and Adesiyun A. A.

February 2009

Key for identification of the Hymenopteran parasitoids of the African citrus psylla Trioza erytreae Del Guercio (Hemiptera: Triozidae) in Cameroon

We studied the parasitic complex of the African citrus psylla, Trioza erytreae for the first time in the tropical zone of Africa, in Cameroon. This psyllid is the major pest of citrus in all high and humid land regions in Cameroon and is parasitized by numerous hymenopterans. Under natural conditions, we discovered that 17 different species of Hymenoptera laid their eggs on nymphs of T. erytreae....

Author(s):     Joseph Lebel Tamesse  

February 2009

Organic based nutrient management strategies: Effect on soil nutrient availability and maize (Zea mays L.) performance in Njoro, Kenya

A field experiment based on the concept of organic nutrient management (ONM) was conducted in Njoro, Kenya to test the effect of improved legume fallows; crotalaria (CR), lablab (LB), garden pea (GP) and natural fallow (NF, as control) on available soil N and P, and maize performance. The experimental layout was a split plot in a randomized complete block design. The main plots were two cropping systems involving the...

Author(s): J. J. Lelei, R. N. Onwonga and B. Freyer

February 2009

Influence of flooding on bambara groundnut (Vigna subterranea L.) germination: Effect of temperature, duration and timing

To evaluate the response of bambara groundnut seeds to flooding stress a laboratory study (experiment 1) and a greenhouse study (experiment 2) were conducted. In the laboratory study seeds of a brown-coloured local bambara groundnut landrace were completely immersed in distilled water (pre-sowing soaking) for 2, 4, 6 and 8 d in an incubator at 20, 25, 30 and 35°C. In the greenhouse study flooding stress was imposed...

Author(s): A Sesay 

February 2009

Multiple nutrient imbalances in ear leaves of on-farm unfertilized maize in eastern and southern Africa

Maize is a major food crop in eastern and southern Africa and is often cultivated with insufficient supplies of nutrients. The current studies are aimed at diagnosing any potential nutrient limitation in maize under farmers’ conditions using the nutrient content in ear leaf tissue at tasseling stage. The majority of the maize crops were considered below the critical nitrogen (N) content in the ear leaves with mean...

Author(s): H. Høgh-Jensen, , D. Kamalongo, F. A. Myaka and J. J. Adu-Gyanfi

February 2009

Environmental stability of resistance to anthracnose and virus diseases of water yam (Dioscorea alata)

Yam anthracnose and virus diseases are the most important biotic constraints affecting yam production in the world. Six Dioscorea alata genotypes were evaluated for their reaction to these diseases in four distinct agro-ecological zones in Nigeria for two years. Data obtained were subjected to linear mixed modelling for ordinal data and site regression model. Environment (E), genotype (G) and G × E...

Author(s): C. N. Egesi, T. J. Onyeka and R. Asiedu

February 2009

Effectiveness of Moringa oleifera seed as coagulant for water purification

The high cost of treated water makes most people in the rural communities to resort to readily available sources which are normally of low quality exposing them to waterborne diseases. It is in this light that this research was carried out to confirm the effectiveness of powder extracted from mature-dried Moringa oleiferaseeds which is commonly available in most rural communities of Africa. This was done using...

Author(s): Francis Kweku Amagloh and Amos Benang

February 2009

Performance assessment for irrigation water management: A case study in the Karacabey irrigation scheme in Turkey

The objective of this study is to assess the performance of irrigation water management of the Bursa–Karacabey irrigation scheme (KIS) located in the western Turkey. The study was carried out in two stages. In the first stage, performance of irrigation water management was assessed using two physical and three financial performance indicators for six years during the period 2002–2007. According to the...

Author(s): Hayrettin Kuscu Filiz Eren Bölüktepe and Ali Osman Demir  

February 2009

Characteristics of new breeding lines of triticale

The objective of this study was to develop new cultivars of triticale possessing high yield and quality which would be adaptable to ecological conditions of Marmara Region. For this purpose, seven selected lines from breeding programs conducted previously and one standard cultivar were used as plant entries of the research. Yield and yield components were taken up to determine the best lines to be candidate for future...

Author(s): Ramazan Dogan, Oya Kacar, Nazan Coplu and Nedime Azkan

February 2009

Antimicrobial and preservative activities of Allium sativum and Eugenia aromatica on fresh tomato puree

This study attempts to develop a method for prolonging the shelf life of ground fresh tomato using fresh Allium sativum and Eugenia aromatica, as antimicrobial and preservative agent. Fresh tomatoes were purchased from Lagos market, washed and allowed to drain. They were milled using a blender. Known percentages of the spices were added to blended tomatoes placed in covered sterilized plastic bowls....

Author(s): Adekalu O. A., Olatunde I. G., Echendu B. M., Adepoju T. C. and Fajemisin O. O.

February 2009

In vitro binding ability of mycotoxin binder in commercial broiler feed

In the present work an in vitro model was tested in evaluating an adsorbent to ameliorate the toxic effects of mycotoxins by quantifying free mycotoxins using thin layer chromatography analysis method. In vitro binding ability of a commercial binder (0.2%) on aflatoxin B1 (AF) (500 ppb), ochratoxin A (OA) (1 ppm) and T-2 toxin (T-2) (2 ppm), when present alone or in combination, was evaluated at...

Author(s): M. Manafi, H. D. Narayanaswamy and N. Pirany