African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 6559

Table of Content: 19 October; 6(23)

October 2011

Probiotics and lamb performance: A review

  Probiotics are naturally occurring microbes, which upon administration improve the health status of the animal by competing with the pathogenic microbes and nutrient utilization by having a positive influence on gut microflora. Addition of probiotics in the lamb’s diet has been reported to improve feed utilization and growth performance of the animals. The exact mechanism through which they affect the...

Author(s): Khalid, M. F., Shahzad, M. A., Sarwar, M., Rehman, A. U., Sharif, M. and Mukhtar, N.

October 2011

Genotypic and phenotypic variability, heritability and genetic diversity for yield components in bread wheat (Triticum aestivum L.) germplasm

  Forty one wheat genotypes were planted at the Nuclear Institute for Food and Agriculture (NIFA), Peshawar, Pakistan during the Rabi season: 2009 to 2010 and were evaluated for genetic diversity regarding different metric traits, that is, plant height, days to 50% flowering, time to reach physiological maturity (days), spikelets per spike and spike length (cm). Significant genotypic differences were observed...

Author(s): Kalim Ullah, Shah Jahan Khan, Muhammad Irfaq Tila Muhammad and Saeed Muhammad

October 2011

Sensitivity to gamma rays studies in two Iranian rice (Oryza sativa) genotypes

  Determination of effective irradiation dose is prerequisite for mutation breeding and development of genetic variations by induced mutation. In this study, two rice genotypes (cultivar Fajr and landrace Tarom mohalli) were used for effective dose determination and to compare their sensitivity to different doses of gamma rays in a completely random design. It was found that, irradiation reduced significantly...

Author(s): Hallajian Mohammad Taher, Muminjanov Hafiz, Jamali Sepideh Sadat, Vedadi Cirus, Naghavi Mohammad Reza and Majdabadi Abbas

October 2011

Consumer preference for genetically modified (GM) food: The case of less saturated fat palm oil in Malaysia

  Identification of consumer preference for genetically modified (GM) food is a complex process, as the consumer’s decision may differ based on information received. The aim of this study is to capture the determinants of consumer preference for GM palm oil that has less saturated fat using discriminant analysis and binary logistic regression. Data was collected via a face to face survey of 1017...

Author(s): Latifah Amin, Jamal Othman, Hong Lip, Goh, and Kamaruzaman Jusoff 

October 2011

Some biochemical properties of catalase from safflower (Carthamus tinctorius L. cv. M-CC-190)

  Safflower (Carthamus tinctorius L.cv) is a member of the family Compositae that is cultivated mainly for its seed, which is used as edible oil and bird seed. Catalase is a common enzyme found in nearly all living organisms that are exposed to oxygen, where it functions to catalyse the decomposition of hydrogen peroxide to water and oxygen. In this study catalase was extracted from leaves of safflower...

Author(s): H. Tayefi-Nasrabadi, G. Dehghan, B. Daeihassani, A. Movafegi and A. Samadi

October 2011

Yield effects of intercropping white guinea yam (Dioscoreae rotundata P.) minisetts and maize (Zea mays L.) in the southern Guinea savanna of Nigeria

  Field experiments were conducted from May to October during 2003 and 2004 cropping seasons at the Research Farm, University of Agriculture, Makurdi, Benue State, Nigeria, to evaluate the yield effects of intercropping white Guinea yam (minisetts) and maize and to assess the advantages of the intercropping system. Maize yield was not significantly affected by intercropping with yam-minisett. However, tuber...

Author(s): M. O. Ijoyah

October 2011

Comparative study on the phenology and yield components of two photoperiodic groups of cowpea (Vigna unguiculata (L.) Walp.) in two cropping seasons

  Field experiments were carried out in 2006 and 2007 cropping seasons at the Teaching and Research Farm of the Department of Crop Science, University of Nigeria, Nsukka, to assess the earliness to flowering and the yield of two photoperiodic groups of cowpea. The experimental materials comprised of 6 cowpea accessions obtained from Plateau State and 4 accessions from Enugu State, Nigeria. The experimental...

Author(s): Manggoel, W. and Uguru, M. I.

October 2011

Grass-legume mixtures for enhanced forage production: Analysis of dry matter yield and competition indices

  A six months field trial was conducted at the University Putra, Malaysia to evaluate dry matter yield and nature of competition between Panicum maximum (guinea grass) and each of the following legumes;Stylosanthes guianensis (stylo), Macroptillium bracteatum (burgundy bean), Arachis pintoi, andCentrosema pubescens (centro) in accordance with DeWit (1960) replacement...

Author(s): M. Baba⊃, R. A. Halim⊃, A. R. Alimon⊃ and I. Abubakar⊃

October 2011

Discrimination of almond self compatible genotypes by different methods in a breeding program in Iran

  Self-incompatibility is one of the most important difficulties in almond production, which reduces fruit set dramatically and makes orchard management difficult. Therefore, producing breeding self-compatible almond genotypes is of great importance. In this research work, the growth of pollen tube was studied in 38 genotypes obtained after crossing “Touno” (male parent) with “Shahrood...

Author(s): Momenpour A., Ebadi  A. and Imani A.

October 2011

Effects of pure and mixed plantations of Populus deltoides with Alnus glotinosa on growth and soil properties: A case study of Foman Region, Iran

  Plantation and application of fast-growing species, such as Populus deltoides increasingly, are common in the northern part of Iran. Concerns about decline in soil fertility and long-term productivity of fast-growing plantations have promoted interest in using nitrogen-fixing trees in mixed species plantations. P. deltoidesand Alnus glutinosa were planted in five proportions (100P,...

Author(s): Seyed Abdollah Mousavi Koupar, Seyed Mohsen Hosseini, Masoud Tabari, Alireza Modirrahmati, Ahmad Golchin and Farzam Hosseinzadeh Rad

October 2011

Comparison of post-fire planted and natural dry semi-deciduous forest communities in Ghana

  The planting of mixed indigenous tree species for reforestation has gained attention in conservation biology, because they allow the recruitment of other woody species to a site. This study compared the differences in tree species diversity, structure, and composition between secondary dry semi-deciduous forests on two previously burned sites; one site had been planted ten-years prior with...

Author(s): Jones Abrefa Danquah, Mark Appiah and Pappinen Ari

October 2011

Responses of potted Acacia natalitia and Scutia myrtina saplings to type of nitrogen fertilizer and rate of application

  Two experiments were conducted to study the responses of two savanna trees species Acacia natalitia(deciduous legume) and Scutia myrtina (evergreen non-legume) to nitrogen (N). Experiment 1 tested the responses of the species to three N- source fertilizers, namely; limestone ammonium nitrate (LAN), a composite fertilizer NPK3:1:5(26) containing slow release nitrate and an...

Author(s): GE Zharare and PF Scogings

October 2011

Effects of different drip irrigation levels on yield and some agronomic characteristics of raised bed planted corn

  This study was carried out to determine the effects of different irrigation levels on water use, yield and some agronomic parameters of drip-irrigated corn under the Eastern Mediterranean climatic conditions in Turkey. In the trials, irrigation water was applied as I20: 20%, I40: 40%, I60: 60%, I80: 80%, I100: 100% and I120: 120% of evaporation from a Class A Pan. The seasonal total irrigation water...

Author(s): Sefer Bozkurt, Attila Yazar and Gülsüm Sayılıkan MansuroÄŸlu

October 2011

Research on yam production, marketing and consumption of Nupe farmers of Niger State, central Nigeria

  Questionnaire survey was conducted to obtain information from lowland rice cultivation based Nupe farmers in Niger State, central Nigeria regarding the current practices of yam production, marketing and consumption. In order to intensify yam production in Africa, scientists have developed various technologies to control growth cycle of yams for dry season production on wetlands. With appropriate natural...

Author(s): Regina H. Y. FU, Hidehiko KIKUNO and Makoto MARUYAMA

October 2011

Isolation and use of bitter gourd polysaccharide in formulating dietetic soft drinks

  This study was conducted to determine the polysaccharide components of bitter gourd and dietetic soft drinks developed using crude bitter gourd polysaccharides. Both water insoluble materials (WIMs) and alcohol insoluble materials (AIMs) were prepared from bitter gourd flesh and AIMs were fractionated for pectin, hemicelluloses and cellulose. Major parts of bitter gourd flesh were found cellulose (27.5%),...

Author(s): M. G. Aziz, J. Roy, M. S. H. Sarker, and Y. A. Yusof

October 2011

Effects of tillage intensity and anionic polyacrylamide on sediment and nitrogen losses in irrigated wheat field

  Degradation of agricultural soils and nutrient losses affected by intensive agriculture and tillage is of  environmental and agricultural concerns. These concerns lead to emergence and development of conservative technologies such as conservation tillage systems [reduced tillage (RT) and no-till (NT)] and anionic polyacrylamide (PAM). A study was done in order to investigate the interactive effects of...

Author(s): Majid Roozbeh, M. J. Sheikhdavoodi, Morteza Almassi and Hooshang Bahrami

October 2011

Grain sorghum water use with skip-row configuration in the Central Great Plains of the USA

  Grain sorghum (Sorghum bicolor (L.) Moench) is commonly produced under conditions where soil water deficits frequently occur. Research was conducted at ten (10) site-years from 2005 to 2007 across Nebraska where annual mean precipitation ranges from 350 to 900 mm year-1 to determine the effect of row configuration and plant population on soil water distribution, water extraction patterns, crop water...

Author(s): Akwasi A. Abunyewa, Richard B. Ferguson, Charles S. Wortmann, Drew J. Lyon, Stephen C. Mason, Suat Irmak, and Robert N. Klein

October 2011

Paddy soil properties and yield characteristics based on apparent electrical conductivity zone delineation for a humid tropical rice farm

  The traditional grid soil sampling is laborious and time-consuming. It leads to delay in applying the precision-farming cycle. An apparent electrical conductivity (ECa) sensor (VerisEC 3100) was introduced to delineate zones of contrasting areas of paddy soils for site-specific fertilizer management. This study was conducted to zone the area by ECa data as a summary indicator for zoning paddy soils to...

Author(s): Aimrun W.,  Amin M. S. M., Ezrin M. H. and Mastura M.

October 2011

Effect of phenolic compounds on characteristics of strained yoghurts produced from sheep milk

  This study aims to investigate the effect of phenolic compounds extracted grape seed and pomegranate seed on characteristics of strained yoghurts produced from sheep milk. Firstly, phenolic compounds were extracted grape and pomegranate seed and their amounts for strained yoghurts were determined by estimating their phenolic activities. Also antimicrobial activity of seed extracts was determined. On 1st, 7th,...

Author(s): Erman Ersöz, Özer Kınık, Oktay Yerlikaya and Merve Açu

October 2011

Effective discharge for suspended sediment transportation in Ghohruod watershed

  Soil erosion and sediment transport is a phenomenon that happens due to rainfall and water flow on the ground surface in different regions and scales. Different flow values have different effects on this process, so that any change in flow results in suspended sediment content change. Therefore, different flow performance and dominant flow determination (effective discharge) data are necessary for designation...

Author(s): Pari Saeidi, Javad Tabatabaei and Talat Saedi

October 2011

Quality criteria of urban parks: The case of Alaaddın Hill (Konya-Turkey)

  This study aimed to determine the quality criteria that are effective in assessing urban parks as qualified/successful places, which are arranged in order to meet the needs of people living cities for access to natural environment and opportunities for social communication. As a result of a comprehensive literature research, quality criteria for urban parks are defined as accessibility, activities/variety,...

Author(s): Ümmügülsüm Ter

October 2011

The general characteristics and main problems of national parks in Turkey

  Protected areas are central to all nature conservation efforts with their key environmental, social, cultural and economic functions throughout the world. The protected forest areas system in Turkey consists of national parks, nature parks, nature monuments, and nature protection areas. Among these, the national parks are the most extensive in terms of the total area. Since the first national park...

Author(s): Seçil Yurdakul Erol, Yalçın Kuvan and Hasan Tezcan Yıldırım