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: 4 May 2011; 6(9)

May 2011

Analytical globalized state intervention model in rice production development

States are interfering in all economic sectors. States intervention is an accepted driven factor in many developing countries. On the other hand, rice is half of the world’s population food. In addition, rice self-sufficiency is the desire of many Asian countries where rice is a food security matter. This paper is about state intervention in major rice producing countries, and how to identify common areas of state...

Author(s): Iraj Malekmohammadi, Seyed Jamal Farajollah Hosseini, Saeed Yazdani and Shahin Shadfar

May 2011

Morphological, physiological and biochemical responses of plants to drought stress

Plants in nature are continuously exposed to several biotic and abiotic stresses. Among these stresses, drought stress is one of the most adverse factors of plant growth and productivity and considered a severe threat for sustainable crop production in the conditions on changing climate. Drought triggers a wide variety of plant responses, ranging from cellular metabolism to changes in growth rates and crop yields....

Author(s): Shakeel Ahmad Anjum, Xiao-yu Xie, Long-chang Wang, Muhammad Farrukh Saleem, Chen Man and Wang Lei

May 2011

Point prevalence study of gastro-intestinal parasites in village chickens of Centane district, South Africa

Village chickens improve rural farmers’ nutritional and income status. Nonetheless, chicken productivity is chiefly hampered by gastro-intestinal parasites and there is dearth of information on the prevalence of these parasites in village chickens in South Africa. Point prevalent study was, therefore, conducted in two villages of Centane district to determine the prevalence of gastro-intestinal parasites in...

Author(s): Marizvikuru Mwale and Patrick J. Masika

May 2011

Microcosm study of the long term effect of endosulfan on enzyme and microbial activities on two agricultural soils of Yaounde-Cameroon

Soil samples with different physical and chemical characteristics were taken from two sites, Minkoa-Meyos and Mendong, in Yaounde. These samples were treated with the insecticide endosulfan, using commercially recommended rates (1.5l ha-1), and incubated in the laboratory at 20°C in glass flask for 75 days in order to evaluate their toxic effects on enzyme activities, organic matter content and the availability of...

Author(s): Michel Amery Defo, Thomas Njine, Moise Nola and  Florence Sidonie Beboua

May 2011

Predication of soil water storage by spatial dependence in a deposited soil farmland

Spatial dependence was widely recognized in field observations and the existence was very helpful to the development of precision agriculture. On the Loess Plateau of China, the soil water contents (SWCs) at a deposited soil farmland (DF) were measured using the neutron tubes on two sampling lines during two years. The objectives of this research were to recognize their spatial dependence to predict soil water storage...

Author(s): Pei Zhao and Mingan Shao

May 2011

Effect of land use and soil management practices on soil fertility quality in North China cities' urban fringe

The objective of this study was to explore the spatial variation of soil fertility quality and the influence factors of human land use and soil management practices on soil fertility quality in North China cities' urban fringe of Beijing using data for 2007 and grey relational analysis (GRA) and geographic information systems (GIS). Soil total nitrogen, available phosphorus, available potassium, available copper,...

Author(s): Jing-wei Jin , Yue-fei Xu , Hui-chun Ye , Chong-yang Shen and Yuan-fang Huang

May 2011

Soil water soluble organic carbon under three alpine grassland types in Northern Tibet, China

Water soluble organic carbon (WSOC) is the most mobile and reactive soil carbon sourceavailable. It plays an important role in many biogeochemical processes. In this study, we assessed WSOC in the upper 0 to 15 cm soil layer, during the growing season of three representative alpine grassland types of Northern Tibet, with an average elevation of over 4500 m. We also evaluated the contributions of soil environmental...

Author(s): Xuyang Lu, Jihui Fan, Yan Yan and Xiaodan Wang,

May 2011

Assessing input-specific knowledge gaps in farmers’ demand for agricultural inputs – Seed and irrigation technologies in Nigeria

In Sub-Sahara African countries like Nigeria where the substitutability of agricultural inputs tend to be low, policies that directly improve access to deficient inputs (“input-specific” policies) may be more effective than other policies that improve access to all inputs but to a lesser extent (“general” policies). This study uniquely assesses how input-specific policies were distinguished from...

Author(s): Hiroyuki Takeshima

May 2011

Employing an adaptive neuro-fuzzy inference system for optimum distribution of liquid pesticides

An adaptive neuro-fuzzy inference system (ANFIS) was implemented to evaluate different combinations of nozzle flow rates and boom heights in terms of liquid pesticide distribution uniformity from a ground field sprayer. In addition, the ANFIS was utilized to determine the optimum combination of the two principal factors (boom height and nozzle flow rate) that would result in the best distribution uniformity. In ANFIS,...

Author(s): Khalid A. Al-Gaadi, Abdulwahed M. Aboukarima and Ahmed A. Sayedahmed

May 2011

Grasp planning analysis and strategy modeling for underactuated multi-fingered robot hand using in fruits grasping

To solve the unfixed grasping tasks during the fruits picking and rating, grasping modeling is researched as the most important part of the robot hand solutions. A survey for grasping synthesis method with dexterous robot hand is presented in this paper. The difference of grasping characters is introduced between dexterous hand and underactuated hand. Especially, the feature of self-adaptive enveloping grasp achieved by...

Author(s): Li Shanjun, Shuangji Yao, Zhang Yanlin, Meng liang and Lu Zhen

May 2011

Differentiation of olive Colletotrichum gloeosporioides populations on the basis of vegetative compatibility and pathogenicity

Twenty five isolates of Colletotrichum gloeosporioides obtained from fruits of olive, apple and citrus trees from different regions of Golestan province, northern Iran. Results from cross-inoculation experiments showed a great variability in pathogenicity among the isolates examined. They were investigated using complementation tests with nitrate-non-utilizing (Nit) mutants to know their vegetative...

Author(s): S. J. Sanei and S. E. Razavi

May 2011

cDNA, Genomic sequence cloning and over-expression of ribosomal protein L15 gene (RPL15) from the giant panda

RPL15 is a component of the 60S large ribosomal subunit encoded by RPL15 gene and belongs to the L15e family of ribosomal proteins, which is located in the cytoplasm. The cDNA and genomic sequence of RPL15 was cloned successfully from the giant panda using RT-PCR and Touchdown-PCR technology, respectively. These two sequences were analyzed preliminarily and the cDNA of the RPL15 gene was...

Author(s): Bing Sun, Yiling Hou, Wanru Hou, Xiulan Su, Jun Li, Guangfu Wu and Yan Song

May 2011

Interrelationships among the oil and fatty acids in maize

In this study, 28 F1 maize hybrids obtained by 8x8 half diallel crossing were used, in order for the interrelationships among the oil content and fatty acids to be determined by correlation analyses. The range values for oil content of hybrids varied between 3.34 to 4.95%. The results showed positive correlation meaningfully between most traits, and it showed that oleic acid has the most possitive correlation (r =...

Author(s): Gül Ebru Orhun and Kayihan Z. Korkut